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Vishay General Semiconductor - Diodes Division SMB10J22AHM3_A/I
- Part No.:
- SMB10J22AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J22AHM3_A/I.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,254
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Product details
Overview
SMB10J22AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 1000 W peak pulse power (10/1000 µs), 28.2 A peak pulse current (IPPM), and clamps to ≤35.5 V under surge conditions. It is AEC-Q101 qualified and halogen-free, targeting automotive electronics protection.
For engineers reviewing the SMB10J22AHM3_A/I datasheet, SMB10J22AHM3_A/I pinout, SMB10J22AHM3_A/I application, or SMB10J22AHM3_A/I equivalent, this device is evaluated for robust ESD/surge immunity in 12 V/24 V automotive subsystems, including body control modules, sensor interfaces, and infotainment power inputs - where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical selection criteria.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low leakage (≤1.0 µA at 22 V), while the SMB package enables automated SMT placement with thermal resistance RθJA = 72 °C/W and RθJL = 20 °C/W.
Rated for -55 °C to +150 °C junction temperature, SMB10J22AHM3_A/I supports automotive-grade reliability per AEC-Q101, with 100 A non-repetitive forward surge capability (8.3 ms half-sine) and compliance to ANSI/IEEE C62.35 surge standards. The HM3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before conduction begins; sets safe margin above nominal 12 V/24 V rail. |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 1 mA - tight breakdown window ensures predictable turn-on without premature leakage or delayed clamping. |
| VC @ IPPM | ≤35.5 V at 28.2 A - low clamping voltage protects 3.3 V/5 V logic and MOSFET gate drivers during ISO 7637-2 Pulse 1/2a/5a events. |
| PPPM | 1000 W (10/1000 µs) - sustains high-energy transients common in automotive load-dump and inductive switching scenarios. |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves battery life in always-on automotive modules. |
| TJ max. | +150 °C - enables operation in under-hood environments without derating in most PCB layouts. |
| AEC-Q101 | Qualified - validated for automotive use including temperature cycling, humidity bias, and mechanical shock per stress test plan. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode indicated by color band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended pad layout: 5.0 mm × 5.0 mm copper per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lower-potential rail; defines reference for clamping action during overvoltage. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 12 V supply or CAN_H); conducts avalanche current to anode during surge. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | HM3 suffix confirms full compliance with automotive environmental requirements and JESD201 Class 2 whisker resistance. |
| AEC-Q101 qualification | Validated for automotive applications including temperature cycling, HAST, and mechanical shock - no additional qualification needed for Tier 1 designs. |
| Low incremental surge resistance | Enables tighter VC/VBR ratio (35.5 V / 24.4 V ≈ 1.46), minimizing let-through energy to sensitive loads. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without moisture sensitivity concerns - eliminates bake requirement pre-assembly. |
| Glass-passivated junction | Ensures stable VBR over time and temperature, with minimal parameter drift across 15-year automotive service life. |
Applications
| Automotive Body Control Module (BCM) | Automotive Sensor Interface (e.g., ABS Wheel Speed) |
|---|---|
Use Scenario: Protects 12 V power input of BCM against load dump (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at power entry point before DC/DC converter input. Use Value: Clamps 1000 W surges to ≤35.5 V, preventing damage to upstream LDOs and MCU power domains while maintaining <1 µA leakage at 22 V. |
Use Scenario: Shields differential analog output of wheel speed sensor from ESD (IEC 61000-4-2 ±8 kV contact) and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS on sensor VCC line, referenced to chassis ground to avoid signal distortion on AC-coupled outputs. Use Value: Fast <1 ns response and low 22 V VWM preserve signal integrity while meeting AEC-Q100 Grade 0 EMC requirements. |
| Infotainment Power Supply Input | Automotive LIN Bus Transceiver Protection |
Use Scenario: Guards 5 V/3.3 V DC/DC outputs feeding head unit processors and display drivers from coupled transients on shared vehicle harnesses. IC Role / Device Role / Timing Role: Secondary-stage TVS after primary bulk protection, placed adjacent to point-of-load regulator. Use Value: Tight VBR tolerance (±5.1%) and 35.5 V VC ensure downstream 3.3 V logic remains within absolute maximum ratings during combined ESD + surge events. |
Use Scenario: Protects LIN transceiver VCC pin from battery disconnect transients (ISO 7637-2 Pulse 4) and jump-start overvoltage. IC Role / Device Role / Timing Role: Unidirectional clamp between LIN transceiver supply and chassis ground, sized for 28.2 A peak current. Use Value: 1000 W rating and 20 °C/W junction-to-lead thermal resistance allow sustained surge handling without thermal runaway in compact module layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22AHE3_A/I | Same VWM (22 V), VBR (24.4–26.9 V), and PPPM (1000 W), but E3 suffix indicates standard RoHS (not halogen-free). | Lacks halogen-free certification; acceptable for commercial/industrial use but not for automotive programs requiring HM3 compliance. | Select SMBJ22AHE3_A/I only if halogen-free material is not mandated by OEM specification. |
| SMAJ22A-HM3 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W), same VWM/VBR range. | Insufficient for automotive load dump; suitable only for low-energy ESD protection on signal lines or secondary rails. | Choose SMAJ22A-HM3 only for space-constrained, low-power applications where 1000 W surge immunity is not required. |
Compared with SMB10J22AHM3_A/I, SMBJ22AHE3_A/I offers identical electrical performance but lacks halogen-free assurance, while SMAJ22A-HM3 trades surge capacity and thermal performance for footprint reduction - making SMB10J22AHM3_A/I the sole choice for AEC-Q101-compliant, high-energy automotive power rail protection.
Availability
SMB10J22AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMB10J22AHM3_A/I 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, efficiency, and automotive qualification.
The SMB10JxxA series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for demanding automotive and industrial surge immunity where high PPPM, low clamping, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMB10J22AHM3_A/I at its rated peak pulse current?
The SMB10J22AHM3_A/I has a maximum clamping voltage (VC) of 35.5 V when subjected to its rated peak pulse current (IPPM) of 28.2 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 35.5 V during standardized surge events - critical for protecting 3.3 V and 5 V logic components in automotive applications. The SMB10J22AHM3_A/I achieves this with low incremental resistance and stable avalanche behavior.
Is SMB10J22AHM3_A/I suitable for bidirectional signal line protection?
No, SMB10J22AHM3_A/I is a unidirectional TVS diode, intended for DC power rail or single-polarity signal protection where the cathode connects to the protected line and the anode to ground. For bidirectional protection (e.g., data lines like CAN or USB), a bidirectional variant such as SMB8J22CAHM3_A/I must be used - it provides symmetrical clamping in both polarities and is explicitly characterized for ±35.5 V clamping. Using SMB10J22AHM3_A/I on AC-coupled or floating lines risks forward conduction and failure.
Does SMB10J22AHM3_A/I meet AEC-Q101 requirements for automotive use?
Yes, SMB10J22AHM3_A/I is fully AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number 88422, Revision 09-Jan-2024). It has passed stress tests including temperature cycling, high-temperature operating life, humidity bias HAST, and mechanical shock - all required for automotive under-hood and cabin applications. The HM3 suffix further certifies halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance, satisfying Tier 1 OEM material declarations.
What is the thermal resistance profile of SMB10J22AHM3_A/I, and how does it affect layout design?
SMB10J22AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. This means effective heat dissipation requires adherence to Vishay's recommended pad layout - undersized pads increase RθJA and risk thermal runaway during repetitive surges. For high-duty-cycle applications, designers should verify junction temperature rise using RθJL and actual power dissipation, not RθJA alone, since SMB10J22AHM3_A/I conducts heat primarily through its leads.
How does the HM3 suffix in SMB10J22AHM3_A/I differ from the M3 or HE3 suffixes?
The HM3 suffix in SMB10J22AHM3_A/I denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction - combining environmental compliance with automotive qualification. In contrast, M3 indicates halogen-free and RoHS-compliant but *not* AEC-Q101 qualified, while HE3 indicates RoHS-compliant and AEC-Q101 qualified but *not* halogen-free. Only HM3 satisfies all three requirements simultaneously, making SMB10J22AHM3_A/I appropriate for global automotive programs with strict material and reliability mandates.
SMB10J22AHM3_A/I 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):
- 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_A/I FAQ
1.How can I place an order for SMB10J22AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J22AHM3_A/I 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_A/I reliable?
The price and inventory of SMB10J22AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J22AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMB10J22AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J22AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J22AHM3_A/I?
SMB10J22AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J22AHM3_A/I 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_A/I?
For technical support, including SMB10J22AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J22AHM3_A/I requirements.
6.How does Aetrix verify that SMB10J22AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB10J22AHM3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of SMB10J22AHM3_A/I?
All SMB10J22AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J22AHM3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for SMB10J22AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J22AHM3_A/I Tags
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