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Vishay General Semiconductor - Diodes Division SMBG22AHE3/5B
- Part No.:
- SMBG22AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG22AHE3/5B.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,921
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Product details
Overview
SMBG22AHE3/5B 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 a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 35.5 V maximum clamping voltage (VC) at 16.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power line and sensor interface protection.
For engineers reviewing the SMBG22AHE3/5B datasheet, SMBG22AHE3/5B pinout, SMBG22AHE3/5B application, or SMBG22AHE3/5B equivalent, key selection criteria include clamping performance under 16.9 A surge, AEC-Q101 qualification for automotive reliability, unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector that clamps transient overvoltages above its breakdown threshold while maintaining low leakage (<1.0 µA at 22 V). Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive surge stress.
Designed for unidirectional operation, SMBG22AHE3/5B exhibits a forward voltage drop of 3.5 V at 50 A and thermal resistance of 100 °C/W (junction-to-ambient) when mounted per recommended pad layout - enabling effective dissipation of 600 W pulses without exceeding 150 °C maximum junction temperature.
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 consistent avalanche initiation across production lots |
| VC @ IPPM | 35.5 V at 16.9 A - Limits downstream circuit voltage during worst-case 10/1000 µs transients |
| PPPM | 600 W - Sustains high-energy surges common in automotive load-dump and inductive switching events |
| IFSM | 100 A - Withstands 8.3 ms half-sine surge, critical for fuse coordination and system-level fault handling |
| TJ max | +150 °C - Supports operation in under-hood automotive environments with minimal derating |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing leadframe with matte tin-plated terminals solderable per J-STD-002. Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground | Provides low-impedance return path during clamping; requires solid thermal pad connection |
| Cathode | Current exit point in forward bias; marked with band; connects to protected line | Defines polarity for unidirectional suppression; must be routed to signal/power line requiring protection |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables protection against ISO 7637-2 Pulse 5a (load dump) up to 120 V with margin |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules without additional qualification |
| Glass passivated junction | Ensures stable VBR tolerance and low parameter drift over 15+ year service life |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow profiles without moisture sensitivity concerns |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD, relay bounce) |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients up to 120 V and inductive switching spikes. IC Role / Device Role / Timing Role: Shunt TVS diode placed between power rail and chassis ground, clamping within nanoseconds. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤35.5 V, preventing latch-up or gate oxide damage. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Unidirectional clamp on signal line referenced to local ground, absorbing ±1 kV EFT bursts. Use Value: Maintains signal integrity below 22 V stand-off while suppressing >1 kV transients with <1 ns response time. |
| Automotive Lighting Driver | Telecom Power Supply Input |
Use Scenario: Shielding LED driver ICs in headlamp modules from alternator ripple and relay-induced spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input rail, coordinated with upstream fuse and downstream LC filter. Use Value: Survives 100 A surge (8.3 ms) without degradation, ensuring long-term reliability in cyclic thermal environments. | Use Scenario: Front-end protection of AC/DC power supplies in base station equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-stage TVS after MOV, providing precise clamping and low capacitance (<100 pF). Use Value: Delivers 600 W pulse handling with 35.5 V clamping - reducing stress on primary rectifier and bulk capacitor. |
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 VWM/VC, but lower PPPM (600 W vs. SMBJ's 600 W - identical rating); different package (SMB vs. SMBG), slightly larger footprint | SMBJ22A-E3/5B uses SMB (DO-214AA) package with longer leads; less optimized for high-density automotive PCBs | Select SMBG22AHE3/5B for space-constrained AEC-Q101 designs requiring DO-215AA mechanical profile and gull-wing solder joint reliability |
| 1.5SMC22A | Same electrical specs, but SMC (DO-214AB) package; higher RθJA (125 °C/W vs. 100 °C/W), lower surge current capability (16.5 A vs. 16.9 A) | 1.5SMC22A is industrial-grade only; lacks AEC-Q101 qualification and MSL Level 1 rating | Choose SMBG22AHE3/5B where automotive qualification, thermal performance, and reflow compatibility are mandatory |
Compared with SMBJ22A-E3/5B and 1.5SMC22A, SMBG22AHE3/5B offers superior thermal resistance, AEC-Q101 validation, and tighter mechanical tolerances for automated placement - making it the preferred choice for next-generation automotive and industrial control systems demanding zero-defect reliability.
Availability
SMBG22AHE3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply inputs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG22AHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBG series was developed specifically for high-reliability transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-profile packaging, and repeatable clamping behavior under repetitive surge stress.
FAQ
What is the clamping voltage of SMBG22AHE3/5B at its rated peak pulse current?
The SMBG22AHE3/5B has a maximum clamping voltage (VC) of 35.5 V at 16.9 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuits during surge events - a critical parameter for ensuring downstream ICs remain within safe operating area. The SMBG22AHE3/5B maintains this clamping performance across its qualified temperature range.
Is SMBG22AHE3/5B qualified for automotive applications?
Yes, SMBG22AHE3/5B is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its use in automotive powertrain, body electronics, and ADAS systems. The SMBG22AHE3/5B also meets MSL Level 1 for lead-free reflow, supporting modern automotive manufacturing processes.
What does the "5B" suffix mean in SMBG22AHE3/5B?
"5B" denotes the packaging configuration: 13-inch diameter plastic tape and reel, containing 3200 units per reel. This format supports high-volume automated SMT assembly lines and is distinct from the "52" variant (7-inch reel, 750 units). The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification. No electrical or thermal differences exist between 5B and 52 variants - only logistics and handling parameters differ.
How does SMBG22AHE3/5B compare to bidirectional TVS diodes like SMBG22CA?
SMBG22AHE3/5B is unidirectional and intended for DC line protection with defined polarity (cathode band), whereas SMBG22CA is bidirectional and used in AC or floating signal paths. The SMBG22AHE3/5B provides lower forward voltage (3.5 V at 50 A) and supports IFSM (100 A), which SMBG22CA does not specify. For 12 V automotive rails, SMBG22AHE3/5B delivers more predictable clamping and better surge coordination with fuses.
What is the thermal resistance of SMBG22AHE3/5B, and how does it affect layout design?
SMBG22AHE3/5B 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 assumes minimum recommended pad layout per Vishay's datasheet. To maintain TJ ≤ 150 °C during 600 W pulses, designers must ensure adequate copper area and avoid thermal bottlenecks - underscoring why SMBG22AHE3/5B is specified for use with defined pad geometry rather than generic footprints.
SMBG22AHE3/5B 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG22AHE3/5B FAQ
1.How can I place an order for SMBG22AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG22AHE3/5B 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 SMBG22AHE3/5B reliable?
The price and inventory of SMBG22AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG22AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG22AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG22AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG22AHE3/5B?
SMBG22AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG22AHE3/5B 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 SMBG22AHE3/5B?
For technical support, including SMBG22AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG22AHE3/5B requirements.
6.How does Aetrix verify that SMBG22AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG22AHE3/5B 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 SMBG22AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG22AHE3/5B?
All SMBG22AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG22AHE3/5B, 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 SMBG22AHE3/5B part is unused and in its original packaging.
Return procedure for SMBG22AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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