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{"title":"ENIG 1U LED Display 6 Layer PCB Black Solder Mask UL Certification 2.0 MM","imgUrl":"https:\/\/img.chinax.com\/nimg\/2f\/ad\/585289d6902085624398e8e417c4-200x200-1\/enig_1u_led_display_6_layer_pcb_black_solder_mask_ul_certification_2_0_mm.jpg","attrs":{"Brand Name":"WITGAIN PCB","Model Number":"PCB0037","Certification":"UL","Place of Origin":"China"}}
{"title":"2.0 MM Thickness 6 Layer PCB LED Display Screen Black Solder Mask","imgUrl":"https:\/\/img.chinax.com\/nimg\/9d\/26\/62a0eeea28e9ac833a4710418172-200x200-1\/2_0_mm_thickness_6_layer_pcb_led_display_screen_black_solder_mask.jpg","attrs":{"Brand Name":"WITGAIN PCB","Model Number":"PCB0037","Certification":"UL","Place of Origin":"China"}}
{"title":"TG170 FR4 Industrial Main Board High Reliability 6 Layer Epoxy Ink PCB Screen","imgUrl":"https:\/\/img.chinax.com\/nimg\/a2\/81\/7350be7932bd05f8deab238009a2-200x200-1\/tg170_fr4_industrial_main_board_high_reliability_6_layer_epoxy_ink_pcb_screen_printing.jpg","attrs":{"Brand Name":"WITGAIN PCB","Model Number":"PCB0030","Certification":"UL","Place of Origin":"China"}}
{"title":"Immersion Gold 6 Layer PCB Board Thickness 1.0 MM ENIG 1U Surface","imgUrl":"https:\/\/img.chinax.com\/nimg\/b3\/25\/455dbb136a0d12112ca238f8af94-200x200-1\/immersion_gold_6_layer_pcb_board_thickness_1_0_mm_enig_1u_surface.jpg","attrs":{"Brand Name":"WITGAIN PCB","Model Number":"PCB0036","Certification":"UL","Place of Origin":"China"}}
{"title":"ENIG 1U LED Display 6 Layer PCB Black Solder Mask UL Certification 2.0 MM","imgUrl":"https:\/\/img.chinax.com\/nimg\/2f\/ad\/585289d6902085624398e8e417c4-200x200-1\/enig_1u_led_display_6_layer_pcb_black_solder_mask_ul_certification_2_0_mm_thickness.jpg","attrs":{"Brand Name":"WITGAIN PCB","Model Number":"PCB0037","Certification":"UL","Place of Origin":"China"}}
{"title":"White Silkscreen 6 Layer PCB Black Solder Mask For Video Conference Device","imgUrl":"https:\/\/img.chinax.com\/nimg\/62\/dc\/0cf94d884de418baaee3d14967bf-200x200-1\/white_silkscreen_6_layer_pcb_black_solder_mask_for_video_conference_device.jpg","attrs":{"Brand Name":"WITGAIN PCB","Model Number":"PCB000389","Certification":"UL","Place of Origin":"China"}}
1 6 Layer printed circuit board used in display screen.
2 FR4 substrate material, tg 150 degree and board thickness is 2.0mm.
3 Black solder mask and white silkscreen.
4 OSP Treatment
5 PCB size is 748mm*90.4mm/1pcs.
6 35 um copper thcikness on each layer.
7 PCB file or gerber file should be offered by customer.
8 Customized printed circuit board.
Our history:
A grid testing machine has three building blocks - a fixture, a bed of nails and software, to control the overall functionality of the machine. It usually has two cameras which are placed on the top and bottom of the machine in order to scan the whole board.
Advantages of PCB Grid Testing:
Very Reliable method of PCB testing as all the points on the PCB board can be tested simultaneously.
Offers very good accuracy since it uses two cameras
Can easily detect manufacturing defects
An in-circuit tester is easy to program
Interpretation of test results is quite easy
It checks for Open, shorts, mission components, Wrong polarity, defective components, and current leakages in the circuit
Most of the parameters can be checked without applying power to the PCB under test
Limitations of PCB Grid Testing:
Fixtures used in bed of nails testing are expensive since they are mechanical and require a different wiring assembly for a different PCB board
Fixtures are mechanical so any change in the number of pins or their position require extra cost
This test doesn’t test continuity through connectors so there are the chances that the connectors’ faults may remain unnoticed.
Faults related to solder joints, excess solder, solder quality, and solder void also remain unidentified
This type of testing is called In-Circuit Testing. Another test process used for In-Circuit testing is Flying Probe Testing.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2007
Total Annual:
25,000,000-30,000,000
Employee Number:
200~300
Ecer Certification:
Active Member
Witgain Technology Limited was established in 2007. Factories locate in HuiZhou City and marketing locates in ShenZhen City. The total area of two factories is around 10000 square meters. We can offer 2-layer and multi-layer pcb services to our customers, highest to 24 layers and rigid-flex pcb, cer... Witgain Technology Limited was established in 2007. Factories locate in HuiZhou City and marketing locates in ShenZhen City. The total area of two factories is around 10000 square meters. We can offer 2-layer and multi-layer pcb services to our customers, highest to 24 layers and rigid-flex pcb, cer...