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Vishay General Semiconductor - Diodes Division SMBG22A-E3/5B
- Part No.:
- SMBG22A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG22A-E3/5B.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,524
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Product details
Overview
SMBG22A-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), 16.9 A peak pulse current (IPPM), and clamps to ≤35.5 V at rated surge, making it suitable for automotive power line and industrial sensor interface protection.
For engineers reviewing the SMBG22A-E3/5B datasheet, SMBG22A-E3/5B pinout, SMBG22A-E3/5B application, or SMBG22A-E3/5B 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 standard PCB pads.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, responding within picoseconds to transients exceeding its VWM. Its glass-passivated junction ensures stable leakage (<1.0 µA at 22 V) and repeatable breakdown behavior under repetitive surges.
The SMBG22A-E3/5B is rated for 600 W peak pulse power with 0.01% duty cycle, derated linearly above 25 °C ambient per Fig. 2, and exhibits 100 °C/W typical junction-to-ambient thermal resistance when mounted on 5.0 mm × 5.0 mm copper pads - critical for sustained surge handling in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Ensures reliable turn-on margin above VWM with tight tolerance |
| IPPM | 16.9 A (10/1000 µs) - Peak surge current capability determines protection level against ISO 7637-2 Pulse 1/2a/5a |
| VC | ≤35.5 V at IPPM - Clamping voltage defines maximum stress imposed on downstream ICs during surge |
| PPPM | 600 W - Sustains high-energy transients without failure under specified waveform and duty cycle |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads; cathode indicated by band; meets UL 94 V-0, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-impedance return path in unidirectional configuration |
| Cathode | Current exit point during reverse clamping | Connected to protected line (e.g., 24 V rail); band-marked end defines polarity orientation |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy load dump and inductive switching transients common in 24 V automotive systems |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Glass passivated junction | Ensures long-term stability of VBR and leakage performance across temperature and humidity stress |
| Low profile SMBG package | Enables high-density PCB layouts while maintaining thermal performance via 5.0 mm × 5.0 mm pad design |
| RoHS-compliant, halogen-free option available | Meets global environmental compliance requirements without compromising surge robustness |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control modules from ISO 7637-2 load dump pulses and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients before they reach MCU or power management ICs. Use Value: Limits voltage excursion to ≤35.5 V during 16.9 A surges, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies downstream. | Use Scenario: Shielding analog input lines of industrial PLC analog I/O modules from ESD and field-wiring induced transients. IC Role / Device Role / Timing Role: Parallel-connected TVS on signal lines (e.g., 4–20 mA loop inputs) referenced to local ground plane. Use Value: Sub-nanosecond response and <1.0 µA leakage at 22 V preserve signal integrity and measurement accuracy in precision sensing circuits. |
| Telecom DC Power Input | Consumer Appliance Motor Drive |
Use Scenario: Safeguarding PoE-powered equipment front-end DC-DC converters against lightning-induced surges on 48 V input lines. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side 48 V bus, coordinated with upstream GDT or MOV for staged protection. Use Value: 600 W rating and 100 °C/W RθJA allow reliable operation without thermal runaway during repeated 10/1000 µs events. | Use Scenario: Protecting microcontroller GPIOs and gate drivers in smart home appliance motor controllers from back-EMF spikes. IC Role / Device Role / Timing Role: Localized TVS on MOSFET gate drive traces and MCU I/O pins exposed to relay coil or brush motor switching noise. Use Value: Tight VBR tolerance (24.4–26.9 V) ensures predictable clamping onset without false triggering during normal 24 V logic transitions. |
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-E3/5B | Same SMB package but lower 400 W PPPM; VBR = 24.4–26.9 V; IPPM = 11.3 A | Lower surge capacity limits use to less severe transients (e.g., IEC 61000-4-2 ESD only) | Select SMBG22A-E3/5B when 600 W capability is required for ISO 7637-2 or lightning surge immunity. |
| SMCJ22A-E3/5B | Larger SMC (DO-214AB) package; same VBR range; higher 1500 W PPPM; IPPM = 42.7 A | Requires larger PCB footprint and higher thermal mass; suited for primary-line protection where space permits | Choose SMBG22A-E3/5B for space-constrained designs needing 600 W in minimal area; choose SMCJ22A-E3/5B for higher surge margin where layout allows. |
Compared with SMBJ22A-E3/5B and SMCJ22A-E3/5B, the SMBG22A-E3/5B uniquely balances 600 W surge capability with SMBG's compact footprint and AEC-Q101 qualification - making it optimal for automotive and industrial SMT designs where board area and reliability are jointly constrained.
Availability
SMBG22A-E3/5B is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, telecom DC input surge suppression, and consumer appliance motor drive EMI mitigation requiring stable component supply and full traceability.
Supply support for SMBG22A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMBG series was engineered for high-reliability surface-mount transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-profile packaging, and precise clamping characteristics for system-level EMC robustness.
FAQ
What is the clamping voltage of SMBG22A-E3/5B at its rated peak pulse current?
The SMBG22A-E3/5B has a maximum clamping voltage (VC) of 35.5 V when subjected to its rated 16.9 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is measured with the device mounted on 5.0 mm × 5.0 mm copper pads per JEDEC standards. The SMBG22A-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBG22A-E3/5B suitable for automotive applications?
Yes, SMBG22A-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its 150 °C maximum junction temperature, glass-passivated junction, and validated performance under temperature cycling, high-temperature reverse bias (HTRB), and ESD stress meet automotive reliability requirements. The SMBG22A-E3/5B is designed to withstand ISO 7637-2 load dump and pulse 5a transients in 24 V systems.
What does the "E3/5B" suffix indicate in SMBG22A-E3/5B?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads; "5B" specifies packaging in 13-inch diameter plastic tape and reel with a base quantity of 3200 units. This format supports high-volume automated assembly and ensures consistent moisture sensitivity level (MSL Level 1) compliance with peak reflow temperature up to 260 °C. The SMBG22A-E3/5B is not halogen-free - that variant uses the "M3" suffix.
How does SMBG22A-E3/5B differ from bidirectional TVS diodes like SMBG22CA?
The SMBG22A-E3/5B is unidirectional and functions as a polarity-sensitive clamp - conducting only during reverse-biased overvoltage events, with cathode marked by a band. In contrast, SMBG22CA is bidirectional and symmetrically clamps both positive and negative transients, with no polarity marking. The SMBG22A-E3/5B offers lower leakage (<1.0 µA at 22 V) and is preferred for DC power rail protection, whereas SMBG22CA suits AC-coupled or floating signal lines where polarity reversal may occur.
What is the thermal resistance of SMBG22A-E3/5B, and how does it affect layout design?
The SMBG22A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly impacts sustained surge handling: inadequate copper area increases junction temperature rise during repetitive transients, potentially degrading clamping performance or causing thermal failure. To maintain reliability, PCB layout must follow Vishay's recommended pad dimensions and avoid excessive trace length or narrow connections to the SMBG22A-E3/5B terminals.
SMBG22A-E3/5B 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-E3/5B FAQ
1.How can I place an order for SMBG22A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG22A-E3/5B 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-E3/5B reliable?
The price and inventory of SMBG22A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG22A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG22A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG22A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG22A-E3/5B?
SMBG22A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG22A-E3/5B 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-E3/5B?
For technical support, including SMBG22A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG22A-E3/5B requirements.
6.How does Aetrix verify that SMBG22A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG22A-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG22A-E3/5B?
All SMBG22A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG22A-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for SMBG22A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG22A-E3/5B Tags
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