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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Vishay General Semiconductor - Diodes Division SMBG75A-E3/52

Name: SMBG75A-E3/52
Brand: Vishay General Semiconductor - Diodes Division
SKU: SMBG75A-E3/52
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SMBG75A-E3/52

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-215AA, SMB Gull Wing

Datasheet:: SMBG75A-E3/52.pdf

Description:: TVS DIODE 75VWM 121VC DO215AA

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Product details

Overview

SMBG75A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 75 V stand-off voltage, 83.3–92.1 V breakdown at 1 mA, 121 V clamping voltage at 5.0 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform-designed to protect automotive power rails and industrial sensor interfaces against inductive switching transients.

For engineers reviewing the SMBG75A-E3/52 datasheet, SMBG75A-E3/52 pinout, SMBG75A-E3/52 application, or SMBG75A-E3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.

Technical Context

This TVS diode operates as a clamping device in parallel with sensitive circuitry, conducting above its breakdown voltage to limit transient overvoltage. Its glass-passivated junction ensures stable leakage performance, while the SMBG package provides MSL Level 1 moisture sensitivity and 260 °C lead-free reflow compatibility.

The device delivers 600 W peak pulse power handling under standardized 10/1000 μs waveform conditions at 0.01 % duty cycle, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling robust surge energy dissipation in compact PCB layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	75 V - Maximum continuous reverse operating voltage before clamping begins
V_BR (min/max)	83.3 V / 92.1 V at I_T = 1 mA - Confirmed breakdown range ensuring reliable turn-on margin
V_C @ I_PPM	121 V at 5.0 A - Clamped voltage during 10/1000 μs surge, limiting downstream stress
P_PPM	600 W - Peak pulse power rating defining transient energy absorption capability
I_FSM	100 A - Surge current rating for 8.3 ms half-sine wave, supporting high-energy inductive spikes
T_J max	+150 °C - Maximum junction temperature enabling operation in under-hood automotive environments
Leakage @ V_WM	1.0 μA - Low reverse leakage preserves signal integrity and minimizes standby power loss

Pinout & Package

Package: SMBG (DO-215AA), surface-mount gull-wing leaded case with cathode band marking; meets UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry terminal in forward bias	Connected to system ground or low-side reference in unidirectional protection configuration
Cathode	Current exit terminal in forward bias; marked with band	Connected to protected line (e.g., 12 V rail or CAN-H) to clamp positive transients to ground

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan
Glass passivated junction	Ensures stable V_BR tolerance and low leakage across temperature and lifetime
MSL Level 1	Allows unlimited floor life and compatibility with standard 260 °C Pb-free reflow without baking
600 W 10/1000 μs rating	Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) in properly designed circuits
Low profile SMBG package	0.235" × 0.130" footprint enables dense layout in space-constrained ECUs and motor controllers

Applications

Automotive Power Rail Protection	Industrial Sensor Interface Protection
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between V_IN and GND to shunt >83 V transients. Use Value: Limits voltage excursion to ≤121 V during 5 A surge, preventing damage to 16 V-rated LDOs and MCU IO cells.	Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA transmitter) from field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected TVS on signal path to ground, activated within <1 ns of overvoltage event. Use Value: Clamps fast transients while maintaining sub-1.0 μA leakage at 75 V, preserving loop accuracy and calibration stability.
Telecom DC Power Input Protection	Motor Drive Gate Driver Supply Protection
Use Scenario: Securing -48 V telecom rectifier outputs against lightning-induced surges on distribution backplanes. IC Role / Device Role / Timing Role: Reverse-biased SMBG75A-E3/52 used with series resistor to absorb 600 W pulses on negative rail. Use Value: Withstands repetitive 10/1000 μs surges up to 0.01 % duty cycle without parameter shift or thermal runaway.	Use Scenario: Shielding isolated gate driver IC supplies (e.g., 15 V bias) from Miller-induced voltage spikes during IGBT switching. IC Role / Device Role / Timing Role: Local clamping element adjacent to driver IC input capacitor to suppress dV/dt overshoot. Use Value: 20 °C/W junction-to-lead thermal resistance enables rapid heat transfer to PCB copper, sustaining repeated surge events.

Automotive Power Rail Protection

Industrial Sensor Interface Protection

Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump and alternator ripple.

IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between V_IN and GND to shunt >83 V transients.

Use Value: Limits voltage excursion to ≤121 V during 5 A surge, preventing damage to 16 V-rated LDOs and MCU IO cells.

Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA transmitter) from field wiring ESD and inductive kickback.

IC Role / Device Role / Timing Role: Parallel-connected TVS on signal path to ground, activated within <1 ns of overvoltage event.

Use Value: Clamps fast transients while maintaining sub-1.0 μA leakage at 75 V, preserving loop accuracy and calibration stability.

Telecom DC Power Input Protection

Motor Drive Gate Driver Supply Protection

Use Scenario: Securing -48 V telecom rectifier outputs against lightning-induced surges on distribution backplanes.

IC Role / Device Role / Timing Role: Reverse-biased SMBG75A-E3/52 used with series resistor to absorb 600 W pulses on negative rail.

Use Value: Withstands repetitive 10/1000 μs surges up to 0.01 % duty cycle without parameter shift or thermal runaway.

Use Scenario: Shielding isolated gate driver IC supplies (e.g., 15 V bias) from Miller-induced voltage spikes during IGBT switching.

IC Role / Device Role / Timing Role: Local clamping element adjacent to driver IC input capacitor to suppress dV/dt overshoot.

Use Value: 20 °C/W junction-to-lead thermal resistance enables rapid heat transfer to PCB copper, sustaining repeated surge events.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ75A-E3/52	Same V_WM/V_BR/V_C, but lower P_PPM = 600 W (same rating), different package (SMB vs SMBG); identical pinout and mounting pad layout	Identical functional role; SMBG offers slightly improved thermal performance due to larger copper pad interface	Select SMBG75A-E3/52 when board layout allows DO-215AA footprint and enhanced thermal dissipation is required
SMCJ75A-E3/52	Same electrical specs but larger SMC (DO-214AB) package; higher I_PPM (12.3 A) and same 600 W rating due to improved thermal mass	Better suited for high-repetition surge environments where junction temperature rise must be minimized	Choose SMCJ75A-E3/52 only if PCB space permits larger 7.11 mm × 6.22 mm footprint and higher surge repetition is expected

Compared with SMBJ75A-E3/52 and SMCJ75A-E3/52, the SMBG75A-E3/52 delivers identical clamping performance in a thermally optimized DO-215AA package-offering superior junction-to-lead resistance (20 °C/W) versus SMB (25 °C/W) and smaller footprint than SMC, making it ideal for automotive modules with strict space and thermal constraints.

Availability

SMBG75A-E3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor transmitters, and telecom power supply designs requiring stable component supply, AEC-Q101 compliance, and repeatable surge immunity performance.

Supply support for SMBG75A-E3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.

The SMBG Transient Voltage Suppressor family is engineered for high-reliability transient suppression in harsh environments-including automotive, industrial, and telecom-where AEC-Q101 qualification, precise clamping, and long-term parametric stability are mandatory.

FAQ

What is the maximum clamping voltage of SMBG75A-E3/52 under standard 10/1000 μs surge conditions?

The SMBG75A-E3/52 has a maximum clamping voltage (V_C) of 121 V at 5.0 A peak pulse current (I_PPM) under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88456 and defines the upper voltage limit imposed on protected circuitry during transient events, ensuring downstream components remain within safe operating limits.

Is SMBG75A-E3/52 suitable for automotive applications requiring AEC-Q101 qualification?

Yes, SMBG75A-E3/52 is explicitly AEC-Q101 qualified per Vishay documentation (note 1 on page 3 and ordering code HE3/HM3 variants). The device undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per the AEC-Q101 standard, making it suitable for under-hood and body-control module applications where automotive-grade reliability is mandatory.

What is the reverse leakage current of SMBG75A-E3/52 at its rated stand-off voltage?

The SMBG75A-E3/52 exhibits a maximum reverse leakage current (I_D) of 1.0 μA at its rated stand-off voltage (V_WM) of 75 V, measured at T_A = 25 °C. This low leakage ensures minimal power loss and signal interference in always-on systems such as automotive body electronics and industrial sensor nodes.

Does SMBG75A-E3/52 have a bidirectional variant, and how does it differ?

No-SMBG75A-E3/52 is unidirectional only. Its bidirectional counterpart is SMBG75CA-E3/52, which features symmetrical breakdown in both directions (V_BR = 83.3–92.1 V) and no polarity marking. The CA suffix denotes bidirectional functionality, essential for AC-coupled or differential signal lines like RS-485 or CAN, whereas SMBG75A-E3/52 is intended for DC rail protection with defined anode/cathode orientation.

What PCB pad layout is recommended for optimal thermal performance of SMBG75A-E3/52?

Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal of SMBG75A-E3/52 to achieve rated 600 W pulse power and thermal resistance values. Using this pad size ensures the specified R_θJA = 100 °C/W and supports reliable operation under repetitive surge conditions without exceeding the 150 °C maximum junction temperature.

SMBG75A-E3/52 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: DO-215AA, SMB Gull Wing

Series:: TransZorb®

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 75V

Voltage - Breakdown (Min):: 83.3V

Voltage - Clamping (Max) @ Ipp:: 121V

Current - Peak Pulse (10/1000µs):: 5A

Power - Peak Pulse:: 600W

Power Line Protection:: No

Applications:: General Purpose

Capacitance @ Frequency:: -

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMBG)

SMBG75A-E3/52 FAQ

1.How can I place an order for SMBG75A-E3/52 through Aetrix?

Please submit a Request for Quotation (RFQ) for SMBG75A-E3/52 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SMBG75A-E3/52 reliable?

The price and inventory of SMBG75A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG75A-E3/52 is usually 5 days.

3.What payment methods are accepted for SMBG75A-E3/52?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG75A-E3/52 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SMBG75A-E3/52?

SMBG75A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SMBG75A-E3/52 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SMBG75A-E3/52?

For technical support, including SMBG75A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG75A-E3/52 requirements.

6.How does Aetrix verify that SMBG75A-E3/52 is sourced from the original manufacturer or authorized distributors?

All SMBG75A-E3/52 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBG75A-E3/52 meets industry standards.

7.What is the process for return or replacement of SMBG75A-E3/52?

All SMBG75A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG75A-E3/52, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SMBG75A-E3/52 part is unused and in its original packaging.

Return procedure for SMBG75A-E3/52:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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