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Vishay General Semiconductor - Diodes Division SMBJ22AHE3/5B
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- Part No.:
- SMBJ22AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22AHE3/5B.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,619
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Product details
Overview
SMBJ22AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. 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 (IPPM), and 600 W peak pulse power (10/1000 µs waveform), used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the SMBJ22AHE3/5B datasheet, SMBJ22AHE3/5B pinout, SMBJ22AHE3/5B application, or SMBJ22AHE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and packaging details for reliable circuit protection design and BOM validation.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping device triggered by transient overvoltage events-such as inductive load switching or ESD-on DC power rails or low-speed signal paths. Its glass-passivated junction ensures stable breakdown behavior, while the low incremental surge resistance enables rapid energy diversion before downstream components are damaged.
The SMBJ22AHE3/5B is rated for 600 W peak pulse power under standardized 10/1000 µs waveform conditions, with a maximum clamping voltage of 35.5 V at 16.9 A IPPM. Its 1.0 µA max reverse leakage at 22 V stand-off supports low-power system integrity, and its MSL Level 1 rating confirms suitability for standard reflow assembly without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 22 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin. |
| VBR (Breakdown Voltage) | 24.4–26.9 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 35.5 V at IPPM = 16.9 A - Peak voltage seen by protected circuit during worst-case 600 W surge; critical for IC survival. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - Standardized surge handling capacity; validates robustness against lightning and switching spikes. |
| TJ Max / TSTG | –55 to +150 °C - Full industrial and automotive ambient operating range; supports under-hood and factory-floor deployment. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on recommended 5.0 mm × 5.0 mm copper pads; informs heatsinking needs. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic systems per stress test requirements; enables use in ADAS, body control, and infotainment. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity marked by cathode band; anode and cathode terminals defined per unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR. |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return; completes clamping loop during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validated surge handling for IEC 61000-4-5 Level 3/4 compliance in industrial power inputs. |
| AEC-Q101 qualified (HE3 suffix) | Meets automotive reliability standards including HTOL, TC, and HTRB-enables drop-in use in vehicle ECUs. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream silicon; improves margin for 24 V rail protection. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly without baking or special handling. |
| Glass-passivated junction | Ensures stable VBR over time and temperature; reduces parameter drift in long-life embedded systems. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and level-shifters from relay coil flyback and battery dump events in BCMs. IC Role / Device Role: Unidirectional clamping diode placed between 24 V supply rail and MCU input pins. Use Value: Limits transient voltage to ≤35.5 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. |
Use Scenario: Safeguarding 24 V digital input channels against field-wiring surges and inductive coupling in factory automation. IC Role / Device Role: Primary overvoltage clamp on isolated input front-end before optocoupler or Schmitt trigger. Use Value: Maintains <1 µA leakage at 22 V, ensuring clean signal detection while surviving 600 W surge pulses. |
| Telecom Power Supply Rail | Automotive Sensor Interface |
Use Scenario: Guarding secondary-side 24 V DC-DC outputs in telecom rectifier modules against AC line transients. IC Role / Device Role: Secondary-side TVS on regulated output bus, parallel to bulk capacitance. Use Value: Clamps 10/1000 µs surges to 35.5 V within 1 ns response time, preserving downstream PMIC and FPGA power integrity. |
Use Scenario: Shielding analog sensor signal lines (e.g., pressure, temperature) from ESD and load-dump coupling in engine bays. IC Role / Device Role: Low-capacitance (<100 pF) unidirectional suppressor on differential or single-ended sensor traces. Use Value: Provides AEC-Q101-validated protection without distorting millivolt-level sensor signals due to minimal leakage and stable VBR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22AHM3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU automotive Tier 1). | Direct substitution if halogen-free requirement applies; same footprint, thermal, and clamping performance. |
| SMAJ22AHE3/A | Lower 400 W PPPM rating, SMA (DO-214AC) package, higher RθJA (~140 °C/W), same VWM/VBR/VC. | Reduced surge robustness and inferior thermal dissipation; suitable only for lower-energy transients or space-constrained layouts. | Use only when board area is critical and surge threat level is below 400 W; not recommended for automotive or industrial mains-coupled inputs. |
Compared with SMBJ22AHE3/5B, the HM3 variant offers identical protection performance with halogen-free construction, while the SMAJ22AHE3/A trades 33 % peak power capability and thermal margin for smaller footprint-making SMBJ22AHE3/5B the preferred choice for high-reliability 24 V system protection.
Availability
SMBJ22AHE3/5B is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC digital inputs, and telecom power supply rails requiring stable component supply, AEC-Q101 qualification, and consistent 600 W surge immunity.
Supply support for SMBJ22AHE3/5B 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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The SMBJ series is engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ22AHE3/5B at its rated peak pulse current?
The SMBJ22AHE3/5B has a maximum clamping voltage (VC) of 35.5 V at its rated peak pulse current (IPPM) of 16.9 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMBJ22AHE3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ22AHE3/5B qualified for automotive applications?
Yes, SMBJ22AHE3/5B is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and documented in Vishay's official datasheet revision 09-Jan-2024. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing-making SMBJ22AHE3/5B suitable for under-hood and chassis-mounted automotive electronics.
What does the "5B" in SMBJ22AHE3/5B indicate?
The "5B" suffix denotes the packaging configuration: 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This format supports high-volume automated SMT placement and is compatible with standard pick-and-place equipment. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification, while "SMBJ22A" specifies the 22 V stand-off voltage and unidirectional polarity.
How does SMBJ22AHE3/5B compare to bidirectional TVS diodes like SMBJ22CA?
SMBJ22AHE3/5B is unidirectional and intended for DC line protection where polarity is fixed, offering lower leakage (<1.0 µA at 22 V) and tighter VBR tolerance than bidirectional variants. In contrast, SMBJ22CA provides symmetrical clamping for AC or polarity-agnostic signals but exhibits higher leakage and slightly reduced clamping efficiency. SMBJ22AHE3/5B is not interchangeable with SMBJ22CA without circuit redesign.
What is the thermal resistance and recommended pad layout for SMBJ22AHE3/5B?
The SMBJ22AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This layout is specified in the Vishay datasheet and essential to achieve rated power dissipation and avoid thermal derating. Deviations reduce surge endurance and long-term reliability.
SMBJ22AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 (SMBJ)
SMBJ22AHE3/5B FAQ
1.How can I place an order for SMBJ22AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22AHE3/5B 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 SMBJ22AHE3/5B reliable?
The price and inventory of SMBJ22AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ22AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ22AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22AHE3/5B?
SMBJ22AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22AHE3/5B 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 SMBJ22AHE3/5B?
For technical support, including SMBJ22AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22AHE3/5B requirements.
6.How does Aetrix verify that SMBJ22AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ22AHE3/5B 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 SMBJ22AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ22AHE3/5B?
All SMBJ22AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22AHE3/5B, 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 SMBJ22AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ22AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ22AHE3/5B Tags
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