
38999 Series III-Type EMI Filter Connectors, Marine Grade
C or π filter per contact · up to 55 dB · marine grade

Surge, lightning and ESD protection in the connector
TVS connectors put transient-voltage-suppression devices inside the connector, between each protected contact and the shell. They protect electronics against load switching, indirect lightning, electrostatic discharge and electromagnetic pulses without extra circuit boards, and keep the size and weight of a standard connector.
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| Parameter | Value | Condition |
|---|---|---|
| Insulation resistance | ≥ 1000 MΩ | 100 VDC, unprotected contacts |
| Withstanding voltage | 500 VDC, 5 s | Unprotected contacts |
| Clamping voltage and energy | Tested to your requirements |
| Parameter | Value | Condition |
|---|---|---|
| Durability | 500 mating cycles | |
| Operating temperature | −55 to +125 °C | |
| Vibration | 10–2000 Hz, 20 g | |
| Shock | 100 g | |
| Acid salt spray | 240 h (5 × 48 h), pH 3.5 ± 0.5 | GJB 150.11A |
| Acid atmosphere | 4 cycles, pH 3.5 ± 0.5 | GJB 150.28 |
| Mold | 84 days, grade 1 or better | GJB 150.10A |
Parameters not listed above — for example vibration level, leak rate or other environmental tests — can be tested to your requirements, including third-party testing.
Base connector, protected pins, working voltage per pin, surge standard or waveform and required clamping voltage.
Part number, drawing, pin-out or a short description of your application.
Our engineers match the configuration and reply with a drawing and quotation.
Samples are built to order. The minimum order quantity is 10 pieces, and samples and production orders each take 4–8 weeks. Third-party testing to your specification is available on request.
You test the samples in your own equipment and approve them.
Production follows the approved sample configuration, with machining, molding, plating and assembly in our own Shenyang factory.
Send your part number, pin-out or drawing. Every inquiry is acknowledged by email within 1 business day, and an engineer follows up with a matched configuration, drawing or quotation.