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Diotec Semiconductor 1.5SMCJ26CA — Circuit Protection

Diotec 1.5SMCJ26CA, 1500W TVS Zener, DO-214AB

MPN1.5SMCJ26CA
Active

Diotec Semiconductor 1.5SMCJ26CA unidirectional TVS Zener, 26V reverse standoff, 28.9V min breakdown, 42.1V clamp @ 35.6A peak pulse, 1500W, bidirectional, DO-214AB SMC, -50°C to 150°C junction, surface mount, Tape & Reel.

$0.3200Ref. price · indicative, final on quote
Diotec Semiconductor 1.5SMCJ26CA datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1.5SMCJ26CA specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown28.9V
Voltage - clamping (Max) @ ipp42.1V
Voltage - reverse standoff26V
Current - peak pulse (10/1000μs)35.6A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-50°C ~ 150°C (TJ)
PackageTape & Reel (TR) Cut Tape (CT)
ApplicationsGeneral Purpose
CaseDO-214AB, SMC
Bidirectional channels1

Product details

Voltage protection ceiling — 42.1V clamping at 35.6A

The 1.5SMCJ26CA: At 35.6A peak pulse current the maximum clamping voltage sits at 42.1V, giving the downstream load a hard ceiling during a surge event. The 26V reverse standoff gives roughly 4.3× margin over a nominal 24V rail, so the TVS stays inactive during normal operation and activates only on the transient.

DO-214AB SMC footprint and what it demands of the board

The DO-214AB (SMC) is the standard high-power TVS package at this rating class.

One-directional clamping — know your polarity

The 1.5SMCJ26CA is a unidirectional TVS Zener — it clamps positive transients on a single polarity. A bidirectional TVS in the same series carries a CA suffix; the bare CA suffix here confirms one-direction protection only. For AC rails or polarity-reversing circuits a bidirectional variant is required.

Frequently asked questions

Is 1.5SMCJ26CA in production and how do I request a quote?

Lead time and lot traceability are confirmed at RFQ.

What does the 26V reverse standoff voltage mean for my 24V rail?

The 26V standoff rating sits above the nominal rail, giving the TVS roughly 4.3× margin so it stays in its high-impedance state during normal operation and activates only when a transient exceeds the breakdown threshold of 28.9V minimum.

What package does the 1.5SMCJ26CA use and is it standard on this power class?

The DO-214AB SMC is the industry-standard package for 1500W TVS devices — the same footprint used across multiple manufacturers at this rating, which simplifies second-source qualification if the BOM requires a backup source.