Vishay General Semiconductor - Diodes Division 1.5SMC62AHE3_A/I

Overview

1.5SMC62AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 53.0 V stand-off voltage (V_WM), 58.9–65.1 V breakdown voltage (V_BR) at 1 mA, 17.6 A peak pulse current (I_PPM), and clamps transients to ≤85.0 V under 10/1000 µs waveform - ideal for safeguarding automotive sensor signal lines against ESD and lightning-induced surges.

For engineers reviewing the 1.5SMC62AHE3_A/I datasheet, 1.5SMC62AHE3_A/I pinout, 1.5SMC62AHE3_A/I application, or 1.5SMC62AHE3_A/I equivalent, this AEC-Q101 qualified device offers verified 1500 W peak pulse power capability, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for automotive-grade reliability validation and board-level transient immunity design.

Technical Context

This unidirectional TVS diode operates by avalanche breakdown above its V_BR threshold, providing fast-clamping response (<1 ns typical) to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable leakage performance and long-term reliability under repetitive surge stress.

The 1.5SMC62AHE3_A/I is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Fig. 2 of the datasheet. With R_θJA = 75 °C/W and R_θJL = 15 °C/W, thermal management relies on recommended 8.0 mm × 8.0 mm copper pads per terminal for full 1500 W pulse handling.

Key Specifications

Pinout & Package

Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by band marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ64A-E3/57T and 1.5KE62A, the 1.5SMC62AHE3_A/I delivers higher surge robustness (1500 W vs. 400 W), lower clamping voltage (85.0 V vs. 103 V), and certified automotive qualification - making it the preferred choice for new SMT-based automotive and industrial designs requiring long-term reliability under harsh electrical stress.

Availability

1.5SMC62AHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interface boards, and consumer power adapter designs requiring stable component supply with AEC-Q101 assurance and full traceability.

Supply support for 1.5SMC62AHE3_A/I 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, efficiency, and application-specific optimization.

The 1.5SMC Series was developed for high-power, surface-mount transient suppression in automotive, industrial, and telecom systems - prioritizing AEC-Q101 qualification, low clamping ratio, and robust thermal performance in compact SMC packaging.

FAQ

What is the clamping voltage of the 1.5SMC62AHE3_A/I under a 10/1000 µs surge?

The 1.5SMC62AHE3_A/I has a maximum clamping voltage (V_C) of 85.0 V at 17.6 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of the Vishay datasheet 88303 and reflects the worst-case voltage imposed on protected circuitry during full-rated surge conditions. Engineers must verify that downstream components tolerate this clamped level with margin.

Is the 1.5SMC62AHE3_A/I AEC-Q101 qualified?

Yes, the 1.5SMC62AHE3_A/I is explicitly AEC-Q101 qualified, as confirmed by the "HE3" suffix and footnote (1) on page 3 of the Vishay datasheet 88303. This qualification covers temperature cycling, mechanical shock, humidity bias, and high-temperature operating life tests - validating its suitability for automotive powertrain, chassis, and body electronics applications where reliability is mission-critical.

What is the standoff voltage (V_WM) of the 1.5SMC62AHE3_A/I?

The standoff voltage (V_WM) of the 1.5SMC62AHE3_A/I is 53.0 V, defined as the maximum DC or RMS voltage the device can withstand continuously without exceeding 1 μA leakage current. This value ensures compatibility with 48 V automotive systems and industrial 24–48 V buses, providing sufficient margin below the 58.9–65.1 V breakdown range to prevent false triggering during normal operation.

Does the 1.5SMC62AHE3_A/I have a bidirectional variant?

No, the 1.5SMC62AHE3_A/I is strictly unidirectional. Bidirectional variants use the "CA" suffix (e.g., 1.5SMC62CA), which are functionally distinct devices with symmetrical breakdown in both polarities. The "A" suffix in 1.5SMC62AHE3_A/I denotes unidirectional construction, and the cathode band marking confirms polarity - using it in bidirectional configurations will result in forward conduction and failure.

What package does the 1.5SMC62AHE3_A/I use, and what are its key mechanical features?

The 1.5SMC62AHE3_A/I uses the SMC (DO-214AB) package: a surface-mount, low-profile case measuring 7.75 mm × 6.22 mm × 2.62 mm with matte tin-plated leads. Key mechanical features include UL 94 V-0 flammability rating, J-STD-002 solderability compliance, JESD 201 Class 2 whisker resistance, and MSL Level 1 rating - enabling direct placement in automated SMT lines without dry-pack handling.