Vishay General Semiconductor - Diodes Division P6SMB130A-M3/52

Overview

P6SMB130A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping transient overvoltages on power and signal lines. It features a 130 V standoff voltage (VWM), 179 V maximum clamping voltage (VC) at 3.4 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with a 10/1000 μs waveform - deployed in automotive sensor protection and industrial I/O interface circuits.

For engineers reviewing the P6SMB130A-M3/52 datasheet, P6SMB130A-M3/52 pinout, P6SMB130A-M3/52 application, or P6SMB130A-M3/52 equivalent, key selection criteria include clamping voltage margin relative to system rail, thermal derating above 25 °C, unidirectional polarity marking, and halogen-free RoHS compliance per M3 suffix.

Technical Context

This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 μA leakage at 111 V), but triggers into low-impedance conduction when reverse voltage exceeds its 124–137 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns).

Thermal performance is defined by RθJA = 100 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W (junction-to-lead), supporting reliable operation up to TJ = 150 °C. The device meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band at one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ130A-T and 1.5SMC130A, P6SMB130A-M3/52 delivers identical clamping performance in a halogen-free, MSL Level 1–qualified SMB package - making it optimal for space-constrained, environmentally regulated automotive and industrial designs where lead-free assembly and long-term compliance are mandatory.

Availability

P6SMB130A-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom power rails, and consumer appliance motor drives requiring stable component supply, halogen-free compliance, and repeatable surge immunity performance.

Supply support for P6SMB130A-M3/52 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 validation.

The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for stable clamping, low leakage, and compatibility with automated manufacturing processes.

FAQ

What is the maximum clamping voltage of the P6SMB130A-M3/52 under a 10/1000 μs surge?

The P6SMB130A-M3/52 has a maximum clamping voltage (VC) of 179 V when subjected to its rated peak pulse current of 3.4 A with a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and defines the highest voltage the protected circuit will experience during such a transient event. The P6SMB130A-M3/52 maintains this clamping performance across its specified operating temperature range and after repeated surge exposures.

Is the P6SMB130A-M3/52 suitable for automotive applications?

Yes, the P6SMB130A-M3/52 is qualified to AEC-Q101 when ordered with the HM3 suffix (e.g., P6SMB130AHM3_B/H), but the M3 suffix alone denotes halogen-free RoHS compliance for commercial-grade automotive use. While not AEC-Q101 certified in the M3 variant, its 150 °C TJ max, MSL Level 1 rating, and robust surge capability make it widely deployed in non-safety-critical automotive subsystems such as body control modules and sensor interfaces. Always verify qualification status against the exact ordering code used.

How does the P6SMB130A-M3/52 differ from bidirectional variants like P6SMB130CA?

The P6SMB130A-M3/52 is unidirectional and features a cathode band for polarity identification, enabling asymmetric clamping between a positive rail and ground. In contrast, P6SMB130CA is bidirectional with no polarity marking and clamps symmetrically for AC signal line protection. Their VWM (111 V vs. 111 V), VBR (124–137 V vs. 124–137 V), and VC (179 V vs. 179 V) are identical, but circuit integration differs: P6SMB130A-M3/52 must be oriented correctly, while P6SMB130CA can be placed without regard to direction.

What is the thermal resistance of the P6SMB130A-M3/52, and how does it affect layout?

The P6SMB130A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This means a 600 W surge applied for milliseconds will cause substantial localized heating; sustained power dissipation must remain below 5.0 W (PD rating). Layout must replicate the recommended pad dimensions and avoid thermal isolation - insufficient copper area increases RθJA and risks exceeding 150 °C junction temperature during repeated surges.

Does the P6SMB130A-M3/52 require derating at elevated ambient temperatures?

Yes, the P6SMB130A-M3/52 must be derated above TA = 25 °C per Figure 2 in datasheet 88370. At 85 °C ambient, its peak pulse power drops to approximately 450 W (75% of 600 W), and at 125 °C, it falls to ~300 W (50%). This linear derating directly impacts surge survivability in high-temperature environments like engine compartments or enclosed industrial cabinets - system-level testing must validate performance at worst-case operating temperature.