Vishay General Semiconductor - Diodes Division 1N6272A-E3/54

Overview

1N6272A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 10.5–11.6 V breakdown voltage (V_BR), 9.40 V maximum standoff voltage (V_WM), 1500 W peak pulse power (10/1000 µs), 96.2 A peak pulse current (I_PPM), and clamps to ≤15.6 V at rated surge. It is deployed in automotive ECUs, industrial I/O modules, and telecom interface protection where fast-response, high-energy transient suppression is required.

For engineers reviewing the 1N6272A-E3/54 datasheet, 1N6272A-E3/54 pinout, 1N6272A-E3/54 application, or 1N6272A-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, thermal derating behavior, clamping performance under standardized surge waveforms, and direct alternatives with documented parameter differences - all specific to the 1N6272A-E3/54 variant.

Technical Context

This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its 10.5–11.6 V breakdown range (tested at 1.0 mA), it avalanches rapidly (<1 ns response) to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable V_BR tolerance and low leakage (<5.0 µA at 9.40 V).

Thermally, it uses a molded epoxy case (UL 94 V-0) with R_θJA = 75 °C/W and R_θJL = 15.4 °C/W, enabling reliable operation up to T_J = 175 °C. Power dissipation is rated at 6.5 W on infinite heatsink at T_L = 75 °C, and it withstands 200 A non-repetitive forward surge (8.3 ms half-sine).

Key Specifications

Pinout & Package

1N6272A-E3/54 is housed in the industry-standard axial-leaded Case Style 1.5KE package (JEDEC DO-201AD), with cathode identified by a color band. Leads are matte tin-plated and solderable per J-STD-002/JESD 22-B102; RoHS-compliant (E3 suffix) and qualified per JESD 201 Class 1A whisker test.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ11A, 1N6272A-E3/54 delivers 2.5× higher surge power handling and axial-leaded robustness for high-reliability through-hole designs; compared with 1.5KE11A, it is a manufacturer-confirmed identical-spec alternative with no design impact - enabling sourcing flexibility without requalification.

Availability

1N6272A-E3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telecom power interface designs requiring stable component supply, long-lifecycle support, and traceable RoHS-compliant sourcing.

Supply support for 1N6272A-E3/54 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

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and AEC-Q qualification.

The 1N6272A-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure due to voltage surges is unacceptable.

FAQ

What is the breakdown voltage tolerance for the 1N6272A-E3/54?

The 1N6272A-E3/54 has a specified breakdown voltage range of 10.5 V to 11.6 V at 1.0 mA test current, corresponding to a ±5 % tolerance about the nominal 11 V rating. This tight V_BR window ensures predictable clamping onset and compatibility with 9 V–12 V system rails. The value is measured per ANSI/IEEE C62.35 and confirmed in Vishay Document 88301, Table 1.

Is the 1N6272A-E3/54 RoHS compliant and lead-free?

Yes, the 1N6272A-E3/54 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 6(c)-IV. Its matte tin-plated leads meet J-STD-002 solderability requirements, and it passes JESD 201 Class 1A whisker testing. The molding compound is UL 94 V-0 rated, and material declarations are available via Vishay's compliance portal.

Can the 1N6272A-E3/54 be used in bidirectional configurations?

No - the 1N6272A-E3/54 is strictly a unidirectional TVS diode, as indicated by its "A" suffix and absence of "CA" designation. Bidirectional variants (e.g., 1N6272CA) exist in the same family but have different internal construction and symmetric clamping. Using 1N6272A-E3/54 in AC or floating applications will result in forward conduction during negative half-cycles and potential failure.

What is the maximum clamping voltage of the 1N6272A-E3/54 under full-rated surge?

The 1N6272A-E3/54 clamps to a maximum of 15.6 V when subjected to its rated 96.2 A peak pulse current (I_PPM) under the standard 10/1000 µs waveform. This V_C value is guaranteed across temperature and lot variations and is critical for ensuring protected ICs remain below their absolute maximum ratings during surge events.

Does the 1N6272A-E3/54 require a heatsink for continuous operation?

No heatsink is required for transient suppression duty, as the device handles energy in short pulses (≤1 ms). For continuous DC power dissipation, its 6.5 W rating applies only with infinite heatsinking at T_L = 75 °C. In typical applications, thermal management relies on PCB copper area; the 1N6272A-E3/54's R_θJA = 75 °C/W means ambient operation up to +70 °C is viable with ≥1 sq-in. of 2-oz copper pour.