Vishay General Semiconductor - Diodes Division 1.5KE62C-E3/54

Overview

1.5KE62C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 62 V breakdown voltage (V_BR = 58.9–65.1 V at I_T = 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 85.0 V at 17.6 A, and operates across –55 °C to +175 °C. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching spikes in industrial and automotive systems.

For engineers reviewing the 1.5KE62C-E3/54 datasheet, 1.5KE62C-E3/54 pinout, 1.5KE62C-E3/54 application, or 1.5KE62C-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC-standardized package data, bidirectional clamping behavior, thermal derating curves, and direct alternative part comparisons - all grounded in Vishay's official 88301 specification document.

Technical Context

This device implements a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating circuits without polarity concerns, and it meets JEDEC JESD22-A114 reliability standards for ESD immunity.

The 1.5KE62C-E3/54 operates with a stand-off voltage (V_WM) of 53.0 V, reverse leakage <1.0 µA at V_WM, and exhibits a temperature coefficient of V_BR at +0.104 %/°C - enabling stable overvoltage protection across wide ambient ranges without external biasing.

Key Specifications

Pinout & Package

1.5KE62C-E3/54 uses the DO-201AD axial package (Case Style 1.5KE), with no polarity marking - consistent with its bidirectional function. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and rated for solder dip at 275 °C for 10 s.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1.5KE62C-E3/54, SMBJ64CA trades axial ruggedness and 1500 W headroom for SMT compatibility, while 1.5KE62A-E3/54 retains identical surge performance but mandates polarity-aware layout - making the C-suffix version optimal for floating, AC-coupled, or polarity-agnostic protection points.

Availability

1.5KE62C-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply, RoHS-compliant sourcing, and long-lifecycle support.

Supply support for 1.5KE62C-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, and protection devices with emphasis on reliability, power handling, and automotive qualification.

The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting applications where failure modes include lightning strikes, inductive switching, and electrostatic discharge across consumer, industrial, and transportation markets.

FAQ

What is the breakdown voltage range of the 1.5KE62C-E3/54?

The 1.5KE62C-E3/54 has a guaranteed breakdown voltage (V_BR) range of 58.9 V to 65.1 V at a test current of 1.0 mA, as specified in Vishay's Document Number 88301. This 10% tolerance ensures predictable clamping onset across manufacturing lots and temperature extremes, and directly determines the minimum overvoltage level at which the 1.5KE62C-E3/54 begins conducting to protect downstream circuitry.

Is the 1.5KE62C-E3/54 suitable for automotive applications?

The 1.5KE62C-E3/54 is a commercial-grade part and is not AEC-Q101 qualified. However, Vishay offers the 1.5KE62CAHE3_B variant - identical in electrical specs but certified to AEC-Q101 - for automotive use. Engineers must select the HE3 suffix version for under-hood or safety-critical vehicle systems; the 1.5KE62C-E3/54 remains appropriate for non-automotive industrial or telecom designs where qualification is not mandated.

What does the "C" suffix mean in 1.5KE62C-E3/54?

The "C" in 1.5KE62C-E3/54 denotes bidirectional configuration - meaning the device clamps symmetrically for both positive and negative transients without polarity dependence. Unlike unidirectional types (e.g., 1.5KE62A), the 1.5KE62C-E3/54 has no cathode band marking and can be installed in either orientation, simplifying layout for AC-coupled lines, differential buses, or floating grounds where voltage polarity reverses.

How does the clamping voltage of 1.5KE62C-E3/54 compare to its breakdown voltage?

The 1.5KE62C-E3/54 clamps at 85.0 V when subjected to its full-rated peak pulse current of 17.6 A (10/1000 µs waveform), which is approximately 30% above its nominal 62 V rating and 29% above its V_BR maximum of 65.1 V. This incremental clamping voltage (ΔV_C = 19.9 V) reflects the device's low dynamic impedance and ensures protected circuits experience bounded overvoltage even under worst-case surge conditions.

What is the thermal resistance profile of the 1.5KE62C-E3/54?

The 1.5KE62C-E3/54 has a typical junction-to-lead thermal resistance (R_θJL) of 15.4 °C/W and a junction-to-ambient value (R_θJA) of 75 °C/W. This indicates efficient heat transfer through the leads into PCB copper, allowing sustained operation at 6.5 W power dissipation when leads are soldered to ≥1 sq-in copper areas - critical for reliability in high-temperature industrial enclosures where forced cooling is unavailable.