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Taiwan Semiconductor Corporation 1.5SMC51CA R7G — Circuit Protection

1.5SMC51CA R7G TVS Diode, 1500W, 43.6V Standoff, DO-214AB

MPN1.5SMC51CA R7G
Active

Taiwan Semiconductor 1.5SMC series bidirectional TVS diode, 1.5SMC51CA R7G, 1500W peak pulse power, 43.6V reverse standoff, 70.1V clamping, DO-214AB (SMC) surface mount, tape and reel.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMC51CA R7G specifications
ParameterValue
TypeZener
Series1.5SMC
MountingSurface Mount
Voltage - breakdown48.5V
Voltage - clamping (Max) @ ipp70.1V
Voltage - reverse standoff43.6V
Current - peak pulse (10/1000μs)22A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-214AB, SMC
Bidirectional channels1

Product details

Surge protection for a 43.6V rail — what the ratings mean

The 1.5SMC51CA R7G: When a transient exceeds the 48.5V minimum breakdown voltage, the diode avalanches and clamps the surge to 70.1V maximum, protecting downstream components rated for that transient ceiling. Bidirectional construction (one channel) means the clamping characteristic is symmetrical — the same breakdown and clamp voltages apply for positive and negative transients. This makes it suitable for AC signal lines or bipolar DC rails where the polarity of the surge is unknown.

The 150°C TJ(max) also gives margin for self-heating during repetitive surge events. Supplied on tape and reel, the 1.5SMC51CA R7G is ready for high-volume pick-and-place assembly.

For current BOMs, this part is a low-risk, production-available line item. No stock-holding claim is made; the part is quoted to order.

Frequently asked questions

What is the 1.5SMC51CA R7G's clamping voltage and peak pulse current?

This means a transient on a 43.6V rail will be clamped to 70.1V or below, and the diode can absorb a single 22A surge of that duration without damage.