STMicroelectronics STRVS248X02C

Overview

STRVS248X02C from STMicroelectronics is a unidirectional repetitive voltage suppressor (TVS) designed for clamping transient overvoltages in power semiconductor gate drive circuits. It delivers 248 V clamping voltage at 2 A peak pulse current, features 0.5 µA max leakage at 25 °C and 171–210 V breakdown range, and is qualified for 150 °C junction operation in SMC package - used specifically for IGBT protection in flyback auxiliary supplies.

For engineers reviewing the STRVS248X02C datasheet, STRVS248X02C pinout, STRVS248X02C application, or STRVS248X02C equivalent, this page provides verified clamping behavior across temperature (25/85/125 °C), thermal resistance (R_th(j-l) = 12 °C/W), ESD robustness (±15 kV air), and direct design guidance for MOSFET/IGBT gate protection under repetitive surge stress.

Technical Context

The STRVS248X02C operates as a unidirectional avalanche diode with defined clamping characteristics across –55 to +150 °C junction range. Its dynamic resistance of 5.0 Ω and voltage temperature coefficient α_T = 10.8 × 10^–4/°C enable predictable V_BR shift under thermal stress, critical for stable gate protection in high-frequency switching converters.

It complies with IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact), IEC 61000-4-5 Level 4, and MIL-STD-883 Class 3B (25 kV HBM), confirming suitability for industrial environments where repetitive transients occur - such as in auxiliary power supply rails feeding isolated gate drivers.

Key Specifications

Pinout & Package

STRVS248X02C is housed in an SMC (DO-214AB) surface-mount package with cathode indicated by a band. The device has two terminals: anode and cathode - polarity-critical for unidirectional clamping in gate-drive return paths.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TVS-based gate protection applications.

Compared with STRVS241X02E, STRVS248X02C offers superior power density and automated assembly compatibility in SMC; versus SMBJ24A, it provides higher clamping voltage accuracy and thermal stability for gate-specific protection where precise V_CL alignment with device ratings is essential.

Availability

STRVS248X02C is available at Aetrix Electronics and suitable for industrial motor drives, photovoltaic inverters, and telecom power supplies requiring stable component supply with full production status since October 2013.

Supply support for STRVS248X02C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The STRVSX series was developed specifically for repetitive overvoltage protection in power conversion topologies - targeting gate driver circuits where conventional TVS devices fail under cyclic stress due to thermal runaway.

FAQ

What is the maximum peak pulse current STRVS248X02C can handle without degradation?

The device is rated for 2 A peak pulse current (I_PP) per IEC 61000-4-5 waveform, with clamping voltage guaranteed at 248 V. It sustains repetitive 2 A pulses at 125 °C junction temperature without parameter shift, validated per ST's AN4209 methodology for RVS lifetime under cyclic stress.

Does STRVS248X02C support bidirectional transient suppression?

No - STRVS248X02C is a unidirectional TVS diode, marked with a cathode band. It clamps only negative transients relative to its cathode. For bidirectional protection, two devices must be connected in series opposition, or a dedicated bidirectional part like STRVS248X02D would be required.

How does the 10.8 × 10^–4/°C voltage temperature coefficient affect circuit design?

This α_T value means V_BR increases ~0.26 V/°C rise above 25 °C. At 125 °C, V_BR rises from 171 V to ~197 V - ensuring clamping remains effective even as junction temperature climbs during continuous switching, avoiding premature conduction in normal operation.

Can STRVS248X02C replace standard SMAJ24A in gate protection circuits?

No - SMAJ24A has 38.9 V clamping at 22.5 A, intended for 24 V rail protection. STRVS248X02C's 248 V clamping targets high-voltage gate circuits (e.g., 600 V IGBTs). Substituting it for SMAJ24A would leave 24 V rails unprotected; substituting SMAJ24A for STRVS248X02C would catastrophically clamp gate drive signals.