Taiwan Semiconductor Corporation 1V5KE7V5A

Overview

1V5KE7V5A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 7.13V minimum breakdown voltage (V_BR), 7.88V maximum V_BR, 6.40V reverse stand-off voltage (V_RWM), 11.3V clamping voltage at 133A peak pulse current, and <1μA leakage above 10V. It protects power rails and I/O lines in industrial power supplies and automotive control modules against ESD and lightning-induced surges.

For engineers reviewing the 1V5KE7V5A datasheet, 1V5KE7V5A pinout, 1V5KE7V5A application, or 1V5KE7V5A equivalent, key selection criteria include its 1500W 1ms pulse rating, low 11.3V clamping at 133A, DO-201 mechanical compatibility, unidirectional polarity marking, and RoHS/halogen-free compliance for high-reliability board-level surge protection.

Technical Context

The 1V5KE7V5A operates as a silicon avalanche diode, triggered when transient voltage exceeds its 7.13–7.88V breakdown range. Its glass-passivated junction ensures stable V_BR tolerance and low incremental surge resistance, enabling consistent clamping performance across repeated transients.

Designed for single-polarity DC line protection, it features fast response time (<1 ns), 133A peak pulse current (I_PPM) at 10/1000μs waveform, and thermal stability up to 175°C junction temperature - making it suitable for inductive load switching and EFT immunity in harsh ambient environments.

Key Specifications

Pinout & Package

DO-201 package: axial-leaded, cylindrical glass-passivated body with cathode band marking for unidirectional polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Compared with SMBJ7.0A and 1N6268A, the 1V5KE7V5A delivers higher 1500W surge margin in the same DO-201 footprint, supports longer service life under repetitive transients due to lower incremental resistance, and meets modern halogen-free requirements - making it optimal for new designs requiring robust, compliant, and field-proven TVS protection.

Availability

1V5KE7V5A is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and LED driver systems requiring stable component supply and long-term lifecycle support.

Supply support for 1V5KE7V5A 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 qualified product lines.

The 1V5KE7V5A belongs to TSC's 1V5KE series of high-power unidirectional TVS diodes, engineered specifically for industrial and automotive DC rail protection where reliability under repetitive surge stress and compliance with environmental standards are mandatory.

FAQ

What is the breakdown voltage range of the 1V5KE7V5A?

The 1V5KE7V5A has a guaranteed breakdown voltage (V_BR) range of 7.13V to 7.88V at 10mA test current, measured per JEDEC standards. This tight tolerance ensures predictable turn-on behavior during overvoltage events and allows accurate system-level margining. The 1V5KE7V5A maintains this specification across its full operating temperature range of –55°C to +175°C.

Is the 1V5KE7V5A unidirectional or bidirectional?

1V5KE7V5A is a unidirectional TVS diode, indicated by the absence of "C" suffix in its full ordering code. It conducts only in reverse bias during avalanche, with cathode marked by a band. For bidirectional operation, the equivalent part is 1V5KE7V5CA, which provides symmetrical clamping in both polarities - a distinct device with different electrical characteristics and marking.

What is the clamping voltage of the 1V5KE7V5A at its rated peak pulse current?

The 1V5KE7V5A clamps to a maximum of 11.3V at its rated peak pulse current of 133A (10/1000μs waveform). This value is measured under standardized conditions and represents the upper limit of voltage seen by downstream circuitry during a full 1500W transient event. Engineers use this figure to verify that protected ICs remain within their absolute maximum ratings.

Does the 1V5KE7V5A meet RoHS and halogen-free requirements?

Yes, the 1V5KE7V5A is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound is UL 94V-0 rated, leads are pure tin-plated, and it passes JESD 201 Class 2 whisker testing. These qualifications make the 1V5KE7V5A suitable for export to EU, China, and other regulated markets requiring strict material declarations and environmental compliance.

What package type does the 1V5KE7V5A use, and what are its mechanical highlights?

The 1V5KE7V5A uses the DO-201 axial package - a standardized, through-hole compatible outline with 0.090g typical weight. Key mechanical features include glass passivation for junction protection, pure tin-plated leads compliant with J-STD-002 solderability, and polarity marking via cathode band. Its UL 94V-0 flammability rating supports safety-critical industrial and transportation applications.