廣東南方宏明(香港)電子科技股份有限公司

 	 Varistor is a sort of sensitive component which resistance value can vary with the applied voltage, it is widely used in the instantaneous overvoltage protection and surge absorption of Electronic-electrical equipment.      Features:     	 Great range of varistor voltage:  18V to 1.8KV  	 Fast response to transient voltage (ns) 	 High great withstanding surge current 	 Excellent non-linearity voltage 	 Symmetric V-I characteristics 	 No following-on current 	 Long life      Range of application:     	 Used in surge protection for IC, transistor, diode semiconductor switch circuit. 	 Used in communication, telemetering, electrical control and various electronic equipment. 	 Suppress the instantaneous overvoltage caused by electromagnetic valve and relay. 	 Supprss the instantaneous overvoltage caused by power supply. 	 Suppress the instantaneous overvoltage caused by electronic circuits 	 Lightning protection for various kind of electronic appliances.      Technical conditions:&nbsp;     	 Carry our standard of GB/T10193, GB/T10194, GB/T10195-1997 and SJ/T10348-10349. 	 Measurement conditions For varistors of 05D, 07D, 10D, 14D, 20D Series, voltage across the varistor measured under 1 m A DC. 	 Varistor voltage: The voltage between two terminals with the specified measuring current applied is expressed by letter V. 	 Maximum continuous operating voltage: The maximum sinusoidal RMS voltage or maximum DC voltage that can be applied continuously in the specified environmental temperature range. 	 Working ambient temperature: -40C ~ +85C&nbsp; 	 Storage temperature range: -40C ~ +125C  

茂林(香港)線路板有限公司

The pictured rigid printed circuit board has a green solder mask with immersion gold finish. It is made of FR-4 or CEM-3 material and has a double layered structure. This printed circuit board offers reliable performance and is great for scanner and printer use. 	 Rigid printed circuit board (PCB). 	 Material: FR-4 / CEM-3. 	 Layer: 2 layers. 	 Board thickness: 0.2mm / 0.4mm. 	 High TG: TG150 / TG170. 	 Finishing: immersion gold. 	 Solder mask: green color. 	 Thermal printer PCB. 	 Light scanner PCB. 	 Light printer PCB. 	 Rectangular shape. 	 Simple installation. 	 Reliable performance.  

Rigid Printed Circuit Board

Metallized Polypropylene Film capacitor High-pressure tolerance, high insulation resistance and low-profile, is suitable for the direct current, impulse and low-power circuits with high temperature.Specification Reference standard : IEC 60384-16, GB 10190Climate category : 40/105/21Rated temperature : 85CelsiusOperation temperature range: -40 ~ 105CelsiusRated voltage : 100Vdc ~ 2000VdcCapacitance range : 0.00047uF ~ 6.8uFCapacitance tolerance : +-5%(J), +-10%(K), +-20%(M) (20Celsius, 1kHz)Voltage proof between terminations : U=1.6UR, 5s (20celsius)Insultation resistance : 100Vdc &lt;=UR&lt;500VdcCR&lt;=0.33uF, IR&gt;=60000MΩ, CR&gt;0.33uF,t&gt;=20000MΩ.uF(20celsius, 100Vdc, 1min)UR&gt;=500VdcCR&lt;=0.33uF , IR&gt;=60000MΩ, CR&gt;0.33uF , t&gt;=20000MΩ.uF(20celsius, 500Vdc, 1min)Dissipation factor:1kHz : &lt;=0.001010kHz : &lt;=0.0020(CR&lt;=1uF) (20celsius) 

Metallized Polypropylene Capacitor

These are film capacitors which are made of polyester or polypropylene. Some versions are metallized and/or has a miniature size.
   Polyester film capacitors: for DC and pulsing circuits of radio, TV and so on   Metallised polyester film capacitors: for filter, noise suppression and so on   Miniature-sized metallised polyester film capacitors: with epoxy resin powder coating  

Film Capacitors

   With milling process, side contact and side push.  

Double Layer PCB

Highlighted here is a rigid printed circuit board with impedance control. It has a multi-layer design with hot air leveling finish. This printed circuit board is made of FR-4 material to ensure reliable performance and is suitable for security control systems and security control systems. 	 Rigid printed circuit board (PCB). 	 Material: FR-4. 	 Layer: multi-layer---2 layers / 4 layers / 6 layers. 	 Board thickness: 1.6mm / 2.0mm / 2.4mm. 	 High TG: TG150 / TG170. 	 Finishing: HAL. 	 Solder mask: blue color. 	 Security control system PCB. 	 Security control system PCB. 	 Impedance control. 	 Rectangular shape. 	 Reliable performance. 	 Long service life.  

Rigid PCB

Displayed here is a rigid printed circuit board for power supply systems and battery charging use. It is made of FR-4 grade material to ensure high durability and excellent connectivity. This rigid printed circuit board comes in a multi-layer structure and is finished with immersion gold and thick gold. 	 Rigid printed circuit board (PCB). 	 Material: FR-4. 	 Layer: multi-layer---4 layers / 6 layers. 	 Board thickness: 2.0mm / 2.4mm. 	 High TG: TG150 / TG170. 	 Finishing: immersion gold with thick gold. 	 Solder mask: green color. 	 Power generator blind via / buried via. 	 HDI PCB UPS PCB. 	 Battery charge PCB. 	 Rectangular shape. 	 High durability. 	 Excellent connectivity.  

 	 2.00mm板厚 	 電金工序 	 白色阻釬油 	 厚銅線路板  

Heavy Copper PCB 厚銅線路板

This PCB is made of the FR-4 material for a robust and durable construction. Built with 4 copper layers, this board promises excellent conductivity and reliable long-term performance with its surface well protected with solder mask and immersion gold finish.

&bull; Material: FR-4.
&bull; Multilayer PCB with 4 copper layers.
&bull; Board thickness: 1.2mm/ 1.3mm/ 1.4mm.
&bull; Finishing: Immersion gold.
&bull; Promise excellent conductivity and reliable long-term performance.
&bull; Robust and durable construction.
&bull; Green solder mask.
&bull; HDI PCB.
&bull; Console PCB with impedance control.
&bull; Auto mobile PCB.

The featured rigid printed circuit board comes in a multi-layered design and is halogen free. It is made of FR-4 grade material and has a thickness of 0.6mm.This printed circuit board flaunts a long working life and is suitable for motor use. 	 Rigid printed circuit board (PCB). 	 Material: FR-4. 	 Layer: 4 layers / 6 layers. 	 Board thickness: 0.6mm. 	 Finishing: OSP ENTEK. 	 Solder mask: green color. 	 Motor PCB. 	 Push back tooling step motor PCB. 	 Halogen free PCB. 	 Robust construction. 	 Long working life. 	 Offer reliable connectivity.  

The showcased multilayer PCB features 4 conductive layers to achieve a satisfactory performance. It is finely finished with green solder mask and immersion gold. Ultra-flat in construction yet optimal enough on the conductive performance, this PCB is suitable for a board range of applications.

&bull; Material: FR-4
&bull; 4-layer PCB.
&bull; Board thickness: 0.4mm/ 0.6mm/ 0.8mm.
&bull; Finishing: immersion gold.
&bull; Green solder mask.
&bull; Easy to assemble.
&bull; Ultra-flat construction.
&bull; Boast optimal performance.
&bull; Application: HDI PCB, COB PCB, wire bonding PCB, smart watch PCB, 3D PCB, step PCB, and more.

This 4-layer PCB features a flat panel construction with the thickness available ranging from 1.2mm to 1.4mm, allowing the devices to be more compact and lighter. The exposed copper circuitry is well protected from oxidation and wear with immersion gold finishing, which promises high frequency with lasting durability.

&bull; Material: FR-4.
&bull; 4-layer flat panel construction.
&bull; Board thickness: 1.2mm/ 1.3mm/ 1.4mm.
&bull; Finishing: immersion gold.
&bull; Green solder mask.
&bull; Promise high frequency with lasting durability.
&bull; Make the devices more compact and lighter.
&bull; Application: HDI PCB, console PCB, impedance control, and automobile PCB.

This rigid printed circuit board has a 2 layered design and is finished with hot air leveling. It has a green solder mask and is well crafted to ensure excellent connectivity. The printed circuit board is easy to install and is suitable for control panels and LED indicators. 	 Rigid printed circuit board (PCB). 	 Material: FR-4 / CEM-3. 	 Layer: 2 layers. 	 Board thickness: &nbsp;1.6mm. 	 High TG: TG150 / TG170. 	 Finishing: hot air leveling (HAL). 	 Solder mask: green color. 	 Power supply PCB. 	 Control panel PCB. 	 Panel display PCB. 	 LED indication PCB. 	 High quality. 	 Easy to install. 	 Excellent connectivity.&nbsp;  

Power NTC Thermistor has an excellent non-linearity characteristic for the resistance and temperature, its appliance is an easy and effective method to protect electronic device through surge current restrainning.

 Feature of Power Thermistor  	 Power NTC thermistors are in small size but with a high power that to restrain the
	Surge current. 	 Power NTC thermistors&nbsp; possess the electronic character of fast reflection, high reliability and long-life for use. 	 The material has a high constant as &ldquo;B value&rdquo; with small remained resistance. 	 Power NTC thermistors have a large application range integrate products&nbsp; series.   Rage of Application  	 Switch mode power supply,&nbsp; Adapter. 	 Transformer,&nbsp; LED driver circuit. 	 Electronic rectifier,&nbsp; electronic heater. 	 Electric&nbsp; motor. 	 It has a protected function for RT , display, lighting device and circuit of different electronic equipment.   Certificates  	 Safety Approval Certificate: UL / CUL 	 Quality management system Certificates: &nbsp;ISO9001:2008&nbsp; 	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ISO14001:2004   Electrical Characteristics  	 Rated Zero-Power ResistanceRN (&Omega;) : 5&plusmn;20% Ambient temp. Range:25℃&plusmn;2℃(TA).
	Testing voltage: 1.5VDC
	After placing for 1~2 hours under TA, the resistance value shall be measured. 	 Thermal Dissipation Constant &delta;(mW/℃) : &ge;15 , The thermal dissipation constant(&delta;) could be calculated by the ratio of a change in power dissipation(&Delta;P) of the thermistor to a change in temperature(&Delta;T) of the thermistor at a specified ambient temperature 	 Thermal Time Constant &tau;(s) : &le;68, The time(&tau; shall be measured within which the temperature change of NTC thermistor is reached at 63.2% of the ambient temperature change under zero power condition 	 Material Constant B : 2700&plusmn;10% B=T1T2/( T2- T1) &times;Ln (R1/R2), R1 , R2 is zero-power resistance at T1 , T2
	T1 = 298.15 K(25℃)&nbsp; T2 = 323.15 K(50℃) 	 Max.Steady State Current (A) : visible mechanical damage.
	&Delta;RN&nbsp;/ RN&nbsp;&le;20% (&Delta;R =∣RN-RN&#39;∣), 25℃&plusmn;2℃Ambient temp. Range, 5.0A&nbsp; Testing Current  

Thermistors 

This rigid PCB comes constructed with a high-strength FR-4 base, multiple copper layers, green solder mask, as well as reliable immersion gold finishing. We offer various choices of the number of conductive layers, copper thickness, and board thickness to fit a board variety of application needs.&nbsp;&nbsp;

&bull; High-strength FR-4 base.
&bull; Multi-layer construction: 4 layers/ 6 layers/ 8 layers/ 10 layers.
&bull; Board thickness: 1.2mm/ 1.3mm/ 1.4mm/ 1.6mm/ 2.0mm/ 3.0mm.
&bull; Copper thickness: 2oz/ 3oz/ 4oz.
&bull; Finishing: immersion gold.
&bull; Solder mask in green.
&bull; Application: planner transformer heavy copper PCB, coil PCB, inductor PCB, and power Supply PCB.

Rigid Printed Circuit Board PCB 	 Material : FR-4 	 Layer : Multi Layer---4 Layer / 6 Layer 	 Board Thickness: 1.6mm / 2.0mm / 2.4mm 	 High Tg: Tg150 / Tg170 	 Finishing: Immersion Gold with Thick Gold 	 Solder Mask: Green Color 	 Power Generator ATM Machine Power Supply Ethernet switch control PCB 	 Battery Charge PCB  

Varistor is a sort of sensitive component which resistance value can vary with the applied voltage, it is widely used in the instantaneous overvoltage protection and surge absorption of Electronic-electrical equipment.

    Features:    
- Great range of varistor voltage:  18V to 1.8KV 
- Fast response to transient voltage (ns)
- High great withstanding surge current
- Excellent non-linearity voltage
- Symmetric V-I characteristics
- No following-on current
- Long life

    Range of application:    
- Used in surge protection for IC, transistor, diode semiconductor switch circuit.
- Used in communication, telemetering, electrical control and various electronic equipment.
- Suppress the instantaneous overvoltage caused by electromagnetic valve and relay.
-&nbsp;Supprss the instantaneous overvoltage caused by power supply.
- Suppress the instantaneous overvoltage caused by electronic circuits
- Lightning protection for various kind of electronic appliances.

    Technical conditions:&nbsp;    
- Carry our standard of GB/T10193, GB/T10194, GB/T10195-1997 and SJ/T10348-10349.
- Measurement conditions For varistors of 05D, 07D, 10D, 14D, 20D Series, voltage across the varistor measured under 1 m A DC.
- Varistor voltage: The voltage between two terminals with the specified measuring current applied is expressed by letter V.
- Maximum continuous operating voltage: The maximum sinusoidal RMS voltage or maximum Dc voltage that can be applied continuously in the specified environmental temperature range.
- Working ambient temperature: -40C ~ +85C&nbsp;
- Storage temperature range: -40C ~ +125C

Varistor

This rigid printed circuit board is made of FR-4 grade material and has flash gold plating. It features a tow layers design and has a green solder mask. The printed circuit board offers impedance control and is suitable for watches and wire bonding use. 	 Rigid printed circuit board (PCB). 	 Material: FR-4. 	 Layer: 2 layers. 	 Board thickness: 0.6mm. 	 Finishing: flash gold plating. 	 Solder mask: green color. 	 Impedance control COB PCB. 	 Smart watch PCB. 	 Wire bonding PCB. 	 Wearable watch PCB. 	 Side push PCB. 	 Compact size. 	 Long working life. 	 Easy installation.  

邁高達科技有限公司

◆ High-performance: ARM cortex-A17 Quad-core CPU+Mali-T76x GPU and 2GB DDRAM. Capable of playing 4K*2K UHD videos and handling complex interactive operations.
◆High Robustness: Can achieve 7*24 hours unattended.
◆High level of integration: Integrated with gigabit Ethernet, Wi-Fi, Bluetooth, 6W audio amplifier, TF card
reader, IR remote control, HDMI output, LVDS, eDP, microphone,etc. It is greatly simplify the design of
the whole machine.
◆High scalability: 5x USB ,3xSerial ports,2x I2Cports,6xGPIO

Microtech SMT PCBA Solution RK3288W CPU, 4x DDR3, 8G, 16G/32G/64G/128G Optional PCBA Board With LCD 

 STANDARD ATMOSPHERIC CONDITIONS FOR MAKING MEASUREMENTS  	 AMBIENT TEMPERATURE : 15oC to 35oC(If there is any doubt on the results, the measurements shall be made at +20 +/- 5oC.) 	 RELATIVE HUMIDITY (R.H.) : 45% to 75% (If there is any doubt on the results, the measurements shall be made at 60% to 70%.) 	 AIR PRESSURE : &nbsp;86 kpa to 106 kpa. 	 OPERATING TEMPERATURE RANGE : -40oC to +105oC for which the capacitor can be operated continuously at rated voltage.    ELECTRICAL CHARACTERISTICS   	 Withstand Voltage (TV) :&nbsp;&nbsp;Between Terminals, Apply 150% of rated voltage for 60 sec., or 175% of rated voltage for 1~5 sec. at +20 +/- 5oC.The charging current must be &lt;= 1 Amp.&nbsp;Between Terminals &amp; Enclosure, Apply 200% of rated voltage for 2 to 5 sec. 	 Insulation Resistance (I.R.) : &gt;= 7,500 MOhm (C &lt;= 0.33 uF), &nbsp;&gt;= 2,500 MOhm*uF/C (C &gt; 0.33 uF) Apply Vt +/- 15% for 60 +/- 5 sec. at +20 +/- 5oC. Vt = 50 VDC if rated voltage &lt;= 100 VDC; Vt = 100 VDC if 100 VDC &lt; rated voltage &lt;= 500 VDC; Vt = 500 VDC if rated voltage &gt; 500 VDC. 	 Capacitance (CAP) : Within the tolerance specified. (at +20 +/- 5oC).&nbsp; 	 Measuring Frequency : 1 KHz +/- 10%.Measuring Voltage : &lt;= 1 Vrms.max. 	 Dissipation Factor (DF) : &lt;= 0.010 (1.0%) at 1 KHz. Measuring Frequency : 1KHz+/- 10% Measuring Voltage : &lt;= 1 Vrms.max. 	 Connection of Element : Shall be no open nor short-circuiting. The connection shall be stable. DF shall be &lt;= 0.010 (1.0%) at 1 KHz. Apply 200% of rated voltage for 10 times. 	 Solderability : More than 90% of circumferential surface of lead wire shall be covered with new solder. 	 Testing method per IEC 68-2-20 Ta. Soldering temperature : +260 +/- 5oC. 	 Immersion duration : 2 +/- 0.5 secs    

Metal Film Capacitor

Power NTC  

NTC  

Power NTC Thermistor has an excellent non-linearity characteristic for the resistance and temperature, its appliance is an easy and effective method to protect electronic device through surge current restrainning.

 Feature of Power Thermistor  	 Power NTC thermistors are in small size but with a high power that to restrain the
	Surge current. 	 Power NTC thermistors&nbsp; possess the electronic character of fast reflection, high reliability and long-life for use. 	 The material has a high constant as &ldquo;B value&rdquo; with small remained resistance. 	 Power NTC thermistors have a large application range integrate products&nbsp; series.   Rage of Application  	 Switch mode power supply,&nbsp; Adapter. 	 Transformer,&nbsp; LED driver circuit. 	 Electronic rectifier,&nbsp; electronic heater. 	 Electric&nbsp; motor. 	 It has a protected function for RT , display, lighting device and circuit of different electronic equipment.   Certificates  	 Safety Approval Certificate: UL / CUL 	 Quality management system Certificates: &nbsp;ISO9001:2008&nbsp; 	 ISO14001:2004   Electrical Characteristics  	 Rated Zero-Power ResistanceRN (&Omega;) : 5&plusmn;20% Ambient temp. Range:25℃&plusmn;2℃(TA).
	Testing voltage: 1.5VDC
	After placing for 1~2 hours under TA, the resistance value shall be measured. 	 Thermal Dissipation Constant &delta;(mW/℃) : &ge;15 , The thermal dissipation constant(&delta;) could be calculated by the ratio of a change in power dissipation(&Delta;P) of the thermistor to a change in temperature(&Delta;T) of the thermistor at a specified ambient temperature 	 Thermal Time Constant &tau;(s) : &le;68, The time(&tau; shall be measured within which the temperature change of NTC thermistor is reached at 63.2% of the ambient temperature change under zero power condition 	 Material Constant B : 2700&plusmn;10% B=T1T2/( T2- T1) &times;Ln (R1/R2), R1 , R2 is zero-power resistance at T1 , T2
	T1 = 298.15 K(25℃)&nbsp; T2 = 323.15 K(50℃) 	 Max.Steady State Current (A) : visible mechanical damage.
	&Delta;RN&nbsp;/ RN&nbsp;&le;20% (&Delta;R =∣RN-RN&#39;∣), 25℃&plusmn;2℃Ambient temp. Range, 5.0A&nbsp; Testing Current  

NTC Thermistors 

 	 Varistor is a sort of sensitive component which resistance value can vary with the applied voltage, it is widely used in the instantaneous overvoltage protection and surge absorption of Electronic-electrical equipment.      Recognized Certificate     	 VDE, UL, CQC      Features:     	 Great range of varistor voltage:  18V to 1.8KV  	 Fast response to transient voltage (ns) 	 High great withstanding surge current 	 Excellent non-linearity voltage 	 Symmetric V-I characteristics 	 No following-on current 	 Long life      Range of application:     	 Used in surge protection for IC, transistor, diode semiconductor switch circuit. 	 Used in communication, telemetering, electrical control and various electronic equipment. 	 Suppress the instantaneous overvoltage caused by electromagnetic valve and relay. 	 Suppress the instantaneous overvoltage caused by power supply. 	 Suppress the instantaneous overvoltage caused by electronic circuits 	 Lightning protection for various kind of electronic appliances.      Technical conditions:&nbsp;     	 Carry our standard of GB/T10193, GB/T10194, GB/T10195-1997 and SJ/T10348-10349. 	 Measurement conditions For varistors of 05D, 07D, 10D, 14D, 20D Series, voltage across the varistor measured under 1 m A DC. 	 Varistor voltage: The voltage between two terminals with the specified measuring current applied is expressed by letter V. 	 Maximum continuous operating voltage: The maximum sinusoidal RMS voltage or maximum Dc voltage that can be applied continuously in the specified environmental temperature range. 	 Working ambient temperature: -40C ~ +85C&nbsp; 	 Storage temperature range: -40C ~ +125C  

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