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

Vishay General Semiconductor - Diodes Division SMBG22A-E3/52

Name: SMBG22A-E3/52
Brand: Vishay General Semiconductor - Diodes Division
SKU: SMBG22A-E3/52
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SMBG22A-E3/52

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-215AA, SMB Gull Wing

Datasheet:: SMBG22A-E3/52.pdf

Description:: TVS DIODE 22VWM 35.5VC DO215AA

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Product details

Overview

SMBG22A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 22 V stand-off voltage (V_WM), 24.4–26.9 V breakdown voltage (V_BR) at 1 mA, 35.5 V maximum clamping voltage (V_C) at 16.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform. It is used to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in automotive and industrial control systems.

For engineers reviewing the SMBG22A-E3/52 datasheet, SMBG22A-E3/52 pinout, SMBG22A-E3/52 application, or SMBG22A-E3/52 equivalent, key selection criteria include unidirectional polarity, DO-215AA (SMBG) package compatibility, 150 °C max junction temperature, AEC-Q101 qualification, and 1.0 µA max reverse leakage at V_WM.

Technical Context

This TVS diode operates as a clamping device that remains high-impedance below 22 V and rapidly transitions to low-impedance conduction above its 24.4–26.9 V breakdown threshold. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive surge conditions.

It delivers 35.5 V clamping at 16.9 A (10/1000 µs), exhibits 100 °C/W junction-to-ambient thermal resistance, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. The cathode-band-marked SMBG (DO-215AA) package supports automated placement and provides 100 A I_FSM surge withstand for 8.3 ms half-sine wave.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	22 V - Maximum continuous reverse operating voltage before clamping initiates
V_BR (min/max)	24.4 V / 26.9 V at 1 mA - Confirmed avalanche onset range defining turn-on consistency
V_C @ I_PPM	35.5 V at 16.9 A - Clamped voltage limiting stress on downstream components during surge
P_PPM	600 W - Peak transient energy absorption capability with 10/1000 µs waveform
I_FSM	100 A - Single half-sine surge current rating (8.3 ms), critical for inductive load protection
T_J max	+150 °C - Maximum junction temperature enabling operation in under-hood automotive environments
Leakage @ V_WM	1.0 µA - Minimal standby power loss and signal integrity impact in high-impedance circuits

Pinout & Package

Package: SMBG (DO-215AA), surface-mount, gull-wing leadform, matte tin-plated terminals, RoHS-compliant (E3 suffix), MSL Level 1, 260 °C reflow peak. Cathode identified by band marking.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry terminal during forward conduction	Connected to protected line's lower-potential side (e.g., ground-referenced signal return)
Cathode	Current exit terminal during forward conduction; marked with band	Connected to protected line's higher-potential side (e.g., 22 V supply rail or signal line)

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance
600 W peak pulse power	Robust suppression of ISO 7637-2 Pulse 1/2a/5a transients without degradation
Low incremental surge resistance	Minimizes V_C overshoot during fast-rising transients (<1 ns response time)
Glass passivated junction	Ensures stable V_BR tolerance and long-term parametric stability across life cycle
MSL Level 1 rating	Enables single-pass reflow assembly without moisture sensitivity concerns

Applications

Automotive Power Rail Protection	Industrial Sensor Interface Protection
Use Scenario: Protecting 24 V battery-supplied ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground. Use Value: Limits rail voltage to ≤35.5 V during 100 A surges, preventing damage to 36 V-rated regulators and microcontrollers.	Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) from ESD and field-wiring induced spikes. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) TVS connected across signal and return path near connector. Use Value: Maintains signal fidelity with <0.1% error contribution while clamping ±35.5 V transients within nanoseconds.
Motor Drive Gate Protection	Telecom Line Surge Suppression
Use Scenario: Safeguarding high-side N-channel MOSFET gates driven by isolated gate drivers in BLDC inverters. IC Role / Device Role / Timing Role: Fast-response TVS tied between gate and source to clamp Miller-induced voltage spikes. Use Value: Prevents gate oxide rupture by limiting V_GS to 35.5 V during 16.9 A dV/dt events, preserving FET reliability.	Use Scenario: Front-end protection for PoE-powered Ethernet PHYs exposed to lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Unidirectional TVS deployed per line pair, referenced to local ground plane. Use Value: Absorbs 600 W common-mode surges without latch-up, meeting IEC 61000-4-5 Level 4 requirements.

Automotive Power Rail Protection

Industrial Sensor Interface Protection

Use Scenario: Protecting 24 V battery-supplied ECUs from load-dump and alternator ripple transients.

IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground.

Use Value: Limits rail voltage to ≤35.5 V during 100 A surges, preventing damage to 36 V-rated regulators and microcontrollers.

Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) from ESD and field-wiring induced spikes.

IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) TVS connected across signal and return path near connector.

Use Value: Maintains signal fidelity with <0.1% error contribution while clamping ±35.5 V transients within nanoseconds.

Motor Drive Gate Protection

Telecom Line Surge Suppression

Use Scenario: Safeguarding high-side N-channel MOSFET gates driven by isolated gate drivers in BLDC inverters.

IC Role / Device Role / Timing Role: Fast-response TVS tied between gate and source to clamp Miller-induced voltage spikes.

Use Value: Prevents gate oxide rupture by limiting V_GS to 35.5 V during 16.9 A dV/dt events, preserving FET reliability.

Use Scenario: Front-end protection for PoE-powered Ethernet PHYs exposed to lightning-induced surges on twisted-pair lines.

IC Role / Device Role / Timing Role: Unidirectional TVS deployed per line pair, referenced to local ground plane.

Use Value: Absorbs 600 W common-mode surges without latch-up, meeting IEC 61000-4-5 Level 4 requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ22A-E3/52	Same V_WM (22 V), but lower P_PPM = 600 W (same), higher V_C = 37.5 V at 16.0 A; SMB (DO-214AA) package, 1.6 mm wider body	Suitable where board space allows larger footprint and slightly higher clamping is acceptable	Select SMBJ22A-E3/52 only if existing layout accommodates DO-214AA; not pin-compatible due to different pad geometry
SMCJ22A-E3/52	Same V_WM/V_BR, but P_PPM = 1500 W, V_C = 36.5 V at 41.3 A; SMC (DO-214AB) package, 3× larger thermal mass	Used when higher surge immunity (e.g., ISO 16750-2) or extended thermal dissipation is required	Choose SMCJ22A-E3/52 for enhanced ruggedness in engine bay modules; requires PCB redesign for larger pad layout

Compared with SMBG22A-E3/52, SMBJ22A-E3/52 offers identical power rating but less compact mounting and higher clamping, while SMCJ22A-E3/52 provides triple the surge capacity in a physically incompatible package-making SMBG22A-E3/52 optimal for space-constrained AEC-Q101 automotive modules needing precise 22 V standoff and minimal V_C.

Availability

SMBG22A-E3/52 is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, motor drive gate circuits, and telecom line interface designs requiring stable component supply and AEC-Q101 compliance.

Supply support for SMBG22A-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive qualification.

The SMBG Transient Voltage Suppressor family is engineered for high-reliability surface-mount surge protection in harsh environments, targeting automotive power distribution, industrial automation, and communications infrastructure where compact size and AEC-Q101 validation are mandatory.

FAQ

What is the maximum clamping voltage of SMBG22A-E3/52 under standard test conditions?

The SMBG22A-E3/52 has a maximum clamping voltage (V_C) of 35.5 V when subjected to its rated peak pulse current of 16.9 A using the 10/1000 µs waveform. This value is measured per JEDEC standards and ensures downstream circuitry remains within safe voltage limits during transient events. The SMBG22A-E3/52 achieves this performance while maintaining tight V_BR tolerance (24.4–26.9 V) and low leakage (1.0 µA).

Is SMBG22A-E3/52 suitable for automotive applications?

Yes, SMBG22A-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments up to +150 °C junction temperature. Its DO-215AA package meets MSL Level 1 for lead-free reflow, and its 600 W surge rating aligns with ISO 7637-2 Pulse 5a requirements. The SMBG22A-E3/52 is commonly deployed in body control modules, lighting drivers, and power distribution units where unidirectional 22 V rail protection is needed.

What does the "E3/52" suffix indicate in SMBG22A-E3/52?

The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads, while "/52" specifies packaging in 7" diameter plastic tape and reel with a base quantity of 750 units. This configuration ensures compatibility with high-speed pick-and-place equipment and supports automated manufacturing. The SMBG22A-E3/52 is not AEC-Q101 qualified in the E3 variant; for automotive use, the HE3 variant (e.g., SMBG22AHE3/52) must be selected.

How does SMBG22A-E3/52 differ from bidirectional TVS diodes like SMBG22CA?

The SMBG22A-E3/52 is unidirectional and functions as a polarity-sensitive clamp-conducting only when cathode voltage exceeds anode by >24.4 V-making it ideal for DC rail protection. In contrast, SMBG22CA is bidirectional, clamping symmetrically above and below ground, suited for AC or differential signal lines. The SMBG22A-E3/52 exhibits 1.0 µA leakage at 22 V, whereas SMBG22CA shows higher leakage in both directions and uses no polarity marking.

What thermal considerations apply to SMBG22A-E3/52 in PCB layout?

SMBG22A-E3/52 has a typical junction-to-ambient thermal resistance (R_θJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain T_J ≤ 150 °C during repetitive surges, ensure adequate copper area and avoid thermal bottlenecks. The SMBG22A-E3/52's DO-215AA gull-wing leads facilitate efficient heat transfer to the PCB, but thermal relief patterns should be minimized to preserve thermal conductivity.

SMBG22A-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):: 22V

Voltage - Breakdown (Min):: 24.4V

Voltage - Clamping (Max) @ Ipp:: 35.5V

Current - Peak Pulse (10/1000µs):: 16.9A

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)

SMBG22A-E3/52 FAQ

1.How can I place an order for SMBG22A-E3/52 through Aetrix?

Please submit a Request for Quotation (RFQ) for SMBG22A-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 SMBG22A-E3/52 reliable?

The price and inventory of SMBG22A-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 SMBG22A-E3/52 is usually 5 days.

3.What payment methods are accepted for SMBG22A-E3/52?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG22A-E3/52 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SMBG22A-E3/52?

SMBG22A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SMBG22A-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 SMBG22A-E3/52?

For technical support, including SMBG22A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG22A-E3/52 requirements.

6.How does Aetrix verify that SMBG22A-E3/52 is sourced from the original manufacturer or authorized distributors?

All SMBG22A-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 SMBG22A-E3/52 meets industry standards.

7.What is the process for return or replacement of SMBG22A-E3/52?

All SMBG22A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG22A-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 SMBG22A-E3/52 part is unused and in its original packaging.

Return procedure for SMBG22A-E3/52:

1.Submit a request within 90 days.

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

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