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Vishay General Semiconductor - Diodes Division SMBJ22AHE3_A/H
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- Part No.:
- SMBJ22AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22AHE3_A/H.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,363
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Product details
Overview
SMBJ22AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. 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.
For engineers reviewing the SMBJ22AHE3_A/H datasheet, SMBJ22AHE3_A/H pinout, SMBJ22AHE3_A/H application, or SMBJ22AHE3_A/H equivalent, this device is selected for robust overvoltage protection on DC power rails, I/O lines, and sensor interfaces in automotive, industrial, and telecom systems where AEC-Q101 qualification, low clamping ratio, and fast response (<1 ns) are critical.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 22 V), but triggers into low-impedance conduction when reverse voltage exceeds VBR, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive transient stress.
The SMBJ22AHE3_A/H is rated for 150 °C maximum junction temperature, exhibits 0.096 %/°C temperature coefficient of VBR, and meets J-STD-020 MSL Level 1 (peak reflow 260 °C). It is RoHS-compliant and AEC-Q101 qualified - confirmed by HE3 suffix and Vishay's official documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC rail margin. |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Confirmed breakdown range ensuring reliable triggering without premature conduction. |
| VC @ IPPM | 35.5 V at 16.9 A - Clamping voltage during 10/1000 µs surge; limits protected IC voltage stress to safe levels. |
| PPPM | 600 W - Peak pulse power handling capability; supports high-energy transients per IEC 61000-4-5 Level 4. |
| IPPM | 16.9 A - Maximum non-repetitive surge current; determines minimum trace width and PCB copper area needed. |
| TJ max. | 150 °C - Enables operation in under-hood automotive or high-ambient industrial environments without derating. |
| Package | SMB (DO-214AA) - Standardized 2-pin SMD footprint (5.21 mm × 4.06 mm); compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-banded unidirectional configuration. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Polarity marked by black band indicating cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point; completes clamping path during transient events. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 24 V supply rail or sensor output); carries surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensors requiring zero-failure reliability. |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without degradation or parametric shift. |
| Clamping ratio VC/VBR ≈ 1.37 | Low ratio minimizes voltage overshoot during clamping - critical for protecting 24 V-rated microcontrollers and CAN transceivers. |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without moisture-related popcorn failure or delamination. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) across temperature and lifetime. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in body control modules (BCM) and lighting drivers from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point, clamping surges within nanoseconds. Use Value: Limits voltage seen by downstream LDOs and MCUs to ≤35.5 V, preventing latch-up or permanent damage during ISO 16750-2 tests. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loops) and digital I/O (RS-485, CAN) in factory automation sensors. IC Role / Device Role / Timing Role: Bidirectional-capable protection element (via adjacent bidirectional variant) or unidirectional clamp on signal return paths. Use Value: Maintains signal integrity by suppressing ±1 kV EFT bursts while adding <1 pF capacitance - no data rate degradation. |
| Telecom DC Power Input Protection | Consumer Device USB/DC Jack Protection |
|
Use Scenario: Securing -48 V or +24 V DC inputs in telecom base station power supplies against lightning-induced surges on outdoor lines. IC Role / Device Role / Timing Role: Primary front-end TVS in multi-stage protection architecture, absorbing bulk energy before MOV or GDT stages. Use Value: Handles 600 W peak pulses without thermal runaway, enabling compact design versus higher-power alternatives requiring heatsinking. |
Use Scenario: Adding surge immunity to 5–24 V DC input jacks in smart home hubs, PoE-powered cameras, and portable test equipment. IC Role / Device Role / Timing Role: Low-profile, cost-effective unidirectional clamp integrated near connector to prevent ESD damage during plugging/unplugging. Use Value: Delivers >30 kV HBM ESD protection (per IEC 61000-4-2) with minimal board space - footprint only 5.21 mm × 4.06 mm. |
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_A/H | Halogen-free, RoHS-compliant, AEC-Q101 qualified - identical electrical specs and package; differs only in material composition. | No functional difference; selected when halogen-free compliance is mandated by OEM environmental policy. | Direct material-substitution option; same layout, same thermal performance, same qualification status. |
| SMBJ22A-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VC/PPPM, identical SMB package - lacks automotive qualification and higher-temp reliability testing. | Suitable for non-automotive industrial or consumer applications where AEC-Q101 is not required. | Lower-cost alternative for cost-sensitive designs without automotive or extended-temperature requirements. |
Compared with SMBJ22AHE3_A/H, the HM3 variant offers identical protection performance with halogen-free construction, while the E3/52 version provides full electrical equivalence at lower qualification level - enabling tiered sourcing based on end-equipment requirements.
Availability
SMBJ22AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer DC-input devices requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBJ22AHE3_A/H 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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness, small footprint, and qualification compliance are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ22AHE3_A/H at its rated peak pulse current?
The SMBJ22AHE3_A/H has a maximum clamping voltage (VC) of 35.5 V at its rated peak pulse current (IPPM) of 16.9 A, measured using the standard 10/1000 µs waveform. This value is specified in Vishay's official datasheet (Document Number: 88392, Revision: 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ22AHE3_A/H maintains this clamping performance across its qualified temperature range.
Is SMBJ22AHE3_A/H qualified for automotive applications?
Yes, SMBJ22AHE3_A/H is AEC-Q101 qualified, as explicitly confirmed by the "HE3" suffix in its part number and documented in Vishay's ordering information table (page 3, Document Number: 88392). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, making SMBJ22AHE3_A/H suitable for under-hood and chassis-mounted automotive electronics such as body controllers and ADAS sensor modules.
What is the standoff voltage (VWM) and why is it important for SMBJ22AHE3_A/H?
The standoff voltage (VWM) of SMBJ22AHE3_A/H is 22 V - the maximum DC or continuous reverse voltage the device can withstand without exceeding 1 µA leakage current. This parameter ensures the SMBJ22AHE3_A/H remains non-conductive during normal operation, avoiding power loss or false triggering. It must be selected ≥10–15% above the system's nominal voltage (e.g., 24 V rail) to accommodate tolerances and ripple, while staying below VBR to guarantee reliable surge response.
Does SMBJ22AHE3_A/H have polarity marking, and how is it identified?
Yes, SMBJ22AHE3_A/H is a unidirectional TVS diode with explicit polarity marking: a black cathode band is printed on the package body adjacent to the cathode terminal. Per Vishay's mechanical drawing and datasheet notes, the banded end connects to the protected line (e.g., 24 V rail), while the unbanded end connects to ground. This orientation is critical - reverse installation renders the SMBJ22AHE3_A/H ineffective for overvoltage protection.
What package type does SMBJ22AHE3_A/H use, and what are its key mechanical dimensions?
SMBJ22AHE3_A/H uses the SMB (DO-214AA) surface-mount package, measuring 5.21 mm × 4.06 mm × 2.30 mm (length × width × height) with 2.20 mm lead spacing. Its standardized footprint enables compatibility with automated assembly and IPC-7351B land patterns. The package features matte tin-plated leads, meets UL 94 V-0 flammability rating, and is rated MSL Level 1 for lead-free reflow - all verified in Vishay's datasheet (pages 5–6, Document Number: 88392).
SMBJ22AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for SMBJ22AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22AHE3_A/H 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_A/H reliable?
The price and inventory of SMBJ22AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ22AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ22AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22AHE3_A/H?
SMBJ22AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22AHE3_A/H 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_A/H?
For technical support, including SMBJ22AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ22AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ22AHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ22AHE3_A/H?
All SMBJ22AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22AHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for SMBJ22AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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