Vishay General Semiconductor - Diodes Division P6SMB62CA-E3/5B

Overview

P6SMB62CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 62 V breakdown voltage (V_BR min/max = 58.9–65.1 V), 85 V maximum clamping voltage (V_C) at 7.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.

For engineers reviewing the P6SMB62CA-E3/5B datasheet, P6SMB62CA-E3/5B pinout, P6SMB62CA-E3/5B application, or P6SMB62CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, SMB (DO-214AA) package compatibility, 150 °C max junction temperature, and AEC-Q101 qualification availability - critical for automotive-grade transient protection design validation.

Technical Context

This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at 53.0 V stand-off), while the low incremental surge resistance enables fast response to ESD and lightning-induced surges.

The device is rated for 600 W peak pulse power under 10/1000 µs waveform with 0.01% duty cycle, and derates linearly above 25 °C ambient per Fig. 2. Thermal resistance is 100 °C/W junction-to-ambient (R_θJA) on standard 0.2" × 0.2" copper pads, supporting reliable operation in compact PCB layouts without forced cooling.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), molded plastic case with UL 94 V-0 flammability rating; dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band not marked (bidirectional type).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional TVS diode applications.

Compared with P6SMB62CA-E3/5B, SMAJ64CA offers smaller size but only 1/6 the surge power handling, while SMCJ64CA delivers 2.5× more power at the cost of 2.5× larger footprint and higher thermal inertia - making P6SMB62CA-E3/5B the optimal balance for mid-power industrial and automotive signal-line protection.

Availability

P6SMB62CA-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power supplies, and consumer appliance control boards requiring stable component supply and consistent RoHS-compliant manufacturing.

Supply support for P6SMB62CA-E3/5B 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 transient protection devices with emphasis on reliability and application-specific performance.

The P6SMB Series was engineered for robust, surface-mount transient suppression in high-volume industrial and automotive systems - prioritizing repeatable clamping, automated assembly compatibility, and MSL Level 1 reflow readiness.

FAQ

What does the "CA" suffix mean in P6SMB62CA-E3/5B?

The "CA" suffix in P6SMB62CA-E3/5B indicates a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression for both positive and negative polarity surges. Unlike unidirectional variants (e.g., P6SMB62A), it has no cathode marking and functions identically in either orientation - essential for protecting AC-coupled lines, differential buses, or floating references where polarity is undefined.

Is P6SMB62CA-E3/5B suitable for automotive applications?

P6SMB62CA-E3/5B itself is commercial-grade (E3 suffix), but Vishay offers AEC-Q101 qualified versions under HE3/HM3 ordering codes (e.g., P6SMB62CAHE3_B). For automotive use, specify the HE3 variant to ensure compliance with stress testing for temperature cycling, humidity, and mechanical shock - while retaining identical electrical specs and SMB package dimensions as P6SMB62CA-E3/5B.

What is the maximum clamping voltage of P6SMB62CA-E3/5B and how is it measured?

The maximum clamping voltage of P6SMB62CA-E3/5B is 85.0 V, measured at 7.1 A peak pulse current using a 10/1000 µs double-exponential waveform per IEC 61000-4-5. This value represents the highest voltage imposed on the protected circuit during a standardized surge event - critical for ensuring downstream components like 75 V-rated MOSFETs or 80 V-input regulators remain within safe operating limits.

How does the SMB (DO-214AA) package of P6SMB62CA-E3/5B compare to SMA or SMC packages?

The SMB package of P6SMB62CA-E3/5B measures 4.57 mm × 3.94 mm × 2.20 mm - larger than SMA (DO-214AC) but smaller than SMC (DO-214AB). It delivers 600 W peak power with better thermal dissipation than SMA (100 W) and more compact layout than SMC (1500 W), making P6SMB62CA-E3/5B ideal for mid-power applications where board space and surge rating must be balanced without compromising reflow compatibility or automated placement yield.

Can P6SMB62CA-E3/5B replace P6SMB62A in an existing design?

No - P6SMB62CA-E3/5B is bidirectional, while P6SMB62A is unidirectional with a defined cathode band. Substituting them requires verifying circuit topology: P6SMB62CA-E3/5B works only where symmetrical clamping is needed (e.g., differential pairs, AC signals), whereas P6SMB62A is required for DC-biased lines like power rails. Using P6SMB62CA-E3/5B in place of P6SMB62A may result in unintended conduction during normal forward bias conditions.