47.1 V standoff, 500 W — rail protection in an axial body
The 1N6125A is a bidirectional Zener TVS diode from Microchip Technology, designed to clamp transients on a nominal 47.1 V rail. Its 500 W peak pulse power rating gives you a defined energy budget for surge protection on DC buses, relay coils, or industrial sensor supplies. The reverse standoff voltage of 47.1 V is the maximum continuous voltage the protected line can carry without the diode conducting — set your operating rail below this with margin. Clamping starts at 58.9 V minimum breakdown and limits the surge to 85.3 V at 5.9 A peak pulse current.
Junction rating from -55 to 175°C
The junction temperature range spans -55°C to 175°C — full military-grade thermal capability. That matters for outdoor telecom cabinets, engine-bay electronics, or any environment where the ambient cycles beyond commercial limits. The axial through-hole package handles the heat dissipation better than a small SMD package would at this power level. No power line protection feature — this is a basic TVS without internal filtering or coordinated crowbar; the clamping action is the only protection mechanism. Bidirectional single-channel suits AC-coupled lines or bipolar supplies.
Active production — sourcing through distribution
The base product number is 1N6125; the 'A' suffix indicates a tighter breakdown tolerance variant. Through-hole axial package in bulk — no reel or tape option, so plan for manual or tube-fed insertion. Quoted to order against your BOM quantity. For volume or blanket orders, we can source across our distribution network.