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Vishay General Semiconductor - Diodes Division SMB10J22AHM3_B/H
- Part No.:
- SMB10J22AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J22AHM3_B/H.pdf
- Description:
- 1KW,22V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,381
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Product details
Overview
SMB10J22AHM3_B/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 1000 W peak pulse power (10/1000 µs), 22 V stand-off voltage (VWM), and 35.5 V clamping voltage at 28.2 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines and MOSFET gate drivers against inductive switching transients.
For engineers reviewing the SMB10J22AHM3_B/H datasheet, SMB10J22AHM3_B/H pinout, SMB10J22AHM3_B/H application, or SMB10J22AHM3_B/H equivalent, this part delivers verified automotive-grade transient suppression with halogen-free, RoHS-compliant construction, MSL Level 1 moisture sensitivity, and validated clamping performance under 10/1000 µs surge conditions.
Technical Context
This TVS diode operates as a unidirectional clamping device with a breakdown voltage range of 24.4 V to 26.9 V at 1 mA test current, enabling precise overvoltage thresholding in 24 V automotive systems. Its low incremental surge resistance and fast response time ensure effective suppression of ESD and load-dump transients before downstream ICs are damaged.
The device features glass-passivated junction construction and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Thermal resistance is 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation up to 150 °C junction temperature in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 22 V - Maximum continuous reverse operating voltage before clamping begins; matches 24 V nominal system rails with margin. |
| VBR (Breakdown Voltage) | 24.4 V min / 26.9 V max at 1 mA - Ensures consistent turn-on across production lots and temperature range. |
| VC (Clamping Voltage) | 35.5 V at IPPM = 28.2 A - Limits transient voltage seen by protected ICs to safe levels during 10/1000 µs surges. |
| PPPM (Peak Pulse Power) | 1000 W (10/1000 µs) - Supports high-energy transients common in automotive power distribution and motor control. |
| IFSM (Surge Current) | 100 A (8.3 ms half-sine) - Withstands repetitive load-dump events without degradation. |
| TJ max | 150 °C - Enables use in under-hood automotive environments with minimal derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to ground or low-side reference; conducts during reverse transient to clamp voltage. |
| Cathode | Protected line connection | Connected to signal/power line being protected; color band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | HM3 suffix confirms compliance with automotive environmental standards and soldering process compatibility. |
| AEC-Q101 qualification | Validated reliability for automotive applications including temperature cycling, humidity bias, and high-temperature operating life. |
| Glass-passivated junction | Enhances long-term stability and reduces parameter drift under thermal and electrical stress. |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow without pre-baking; supports high-volume automated assembly. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage exposure to protected circuitry while maintaining robust surge handling. |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp ESD and inductive kickback. Use Value: Prevents latch-up or damage to 3.3 V/5 V interface ICs during ISO 10605 ESD events and ISO 7637-2 pulse 1/2a transients. |
Use Scenario: Safeguarding digital I/O and feedback lines in variable-frequency drives and PLC output modules. IC Role / Device Role / Timing Role: Clamping transient voltages induced by relay coil de-energization or contact arcing. Use Value: Maintains signal integrity and prevents false triggering in 24 V DC control circuits subjected to >100 V spikes. |
| Automotive Power Distribution | DC-DC Converter Input Stage |
Use Scenario: Front-end protection of fuse boxes and junction boxes exposed to battery load-dump events. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from ISO 7637-2 pulse 5a (load dump) up to 40 V/350 ms. Use Value: Limits voltage excursion to ≤35.5 V during 1000 W surges, protecting downstream PMICs and microcontrollers. |
Use Scenario: Input rail protection for buck converters powering ADAS domain controllers. IC Role / Device Role / Timing Role: Suppressing voltage overshoot caused by hot-plug events or input capacitor inrush. Use Value: Ensures converter ICs (e.g., TPS543x) remain within absolute maximum ratings during 10/1000 µs transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB10J22AHE3_B/H | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs HM3). | Approved for commercial automotive use but lacks halogen-free certification required by some OEMs. | Select when halogen-free material is not mandated and cost optimization is prioritized. |
| SMAJ22A-H | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (90 °C/W). | Suitable for lower-energy transients; not rated for AEC-Q101 or load-dump duty cycles. | Choose only for space-constrained non-automotive designs where 1000 W surge immunity is unnecessary. |
Compared with SMB10J22AHM3_B/H, the HE3 variant trades halogen-free compliance for broader commercial availability, while the SMAJ22A-H sacrifices surge capability and automotive qualification for footprint reduction-making SMB10J22AHM3_B/H the sole choice for AEC-Q101–mandated 1000 W protection in SMB form factor.
Availability
SMB10J22AHM3_B/H is available at Aetrix Electronics and suitable for automotive electronics, industrial motor control, and DC-DC converter design requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMB10J22AHM3_B/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, rectifiers, and protection devices with emphasis on reliability and automotive qualification.
The SMB10J series targets high-power transient suppression in harsh environments, specifically engineered for AEC-Q101 compliance and 1000 W surge handling in compact surface-mount packages.
FAQ
What is the clamping voltage of SMB10J22AHM3_B/H at its rated peak pulse current?
The SMB10J22AHM3_B/H has a maximum clamping voltage (VC) of 35.5 V when subjected to its peak pulse current (IPPM) of 28.2 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for protected circuitry. The SMB10J22AHM3_B/H maintains this clamping performance across its qualified temperature range and lifetime.
Is SMB10J22AHM3_B/H suitable for automotive applications requiring AEC-Q101 qualification?
Yes, SMB10J22AHM3_B/H is explicitly AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HM3_X" (where "X" denotes revision). It undergoes stress testing including high-temperature reverse bias, temperature cycling, and ESD per AEC-Q101 requirements. The SMB10J22AHM3_B/H is approved for use in engine control units, body electronics, and ADAS subsystems.
How does the HM3 suffix differ from E3 or HE3 in SMB10J22AHM3_B/H?
The HM3 suffix in SMB10J22AHM3_B/H indicates halogen-free, RoHS-compliant construction meeting automotive material restrictions, whereas E3 is RoHS-compliant but not halogen-free, and HE3 adds AEC-Q101 qualification without halogen-free assurance. All three share identical electrical specs, but only HM3 satisfies OEM requirements for both automotive qualification and halogen-free content-critical for modern vehicle platforms.
What is the thermal resistance of SMB10J22AHM3_B/H, and how does it affect layout design?
SMB10J22AHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W. These values assume mounting on 0.2" × 0.2" copper pads per terminal. To maintain TJ ≤ 150 °C under 1000 W pulses, designers must follow Vishay's recommended pad layout and avoid excessive trace length or isolation-ensuring the SMB10J22AHM3_B/H remains within safe thermal limits during surge events.
Can SMB10J22AHM3_B/H be used in bidirectional configurations?
No, SMB10J22AHM3_B/H is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and presence of cathode band marking. Bidirectional variants such as SMB8J22CA exist in the same family but have different breakdown symmetry and lower PPPM (800 W). Using SMB10J22AHM3_B/H in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or circuit-always verify polarity alignment before placement of SMB10J22AHM3_B/H.
SMB10J22AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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):
- 28.2A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J22AHM3_B/H FAQ
1.How can I place an order for SMB10J22AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J22AHM3_B/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 SMB10J22AHM3_B/H reliable?
The price and inventory of SMB10J22AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J22AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMB10J22AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J22AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J22AHM3_B/H?
SMB10J22AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J22AHM3_B/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 SMB10J22AHM3_B/H?
For technical support, including SMB10J22AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J22AHM3_B/H requirements.
6.How does Aetrix verify that SMB10J22AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMB10J22AHM3_B/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 SMB10J22AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMB10J22AHM3_B/H?
All SMB10J22AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J22AHM3_B/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 SMB10J22AHM3_B/H part is unused and in its original packaging.
Return procedure for SMB10J22AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J22AHM3_B/H Tags
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