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Vishay General Semiconductor - Diodes Division SMB10J22AHM3_B/I
- Part No.:
- SMB10J22AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J22AHM3_B/I.pdf
- Description:
- 1KW,22V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,351
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Product details
Overview
SMB10J22AHM3_B/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 power 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 transients to ≤35.5 V. It is AEC-Q101 qualified and used in automotive sensor interface protection.
For engineers reviewing the SMB10J22AHM3_B/I datasheet, SMB10J22AHM3_B/I pinout, SMB10J22AHM3_B/I application, or SMB10J22AHM3_B/I equivalent, key selection criteria include clamping voltage vs. protected IC's absolute maximum rating, VWM margin relative to operating rail, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a shunt-type overvoltage protector: under normal conditions it presents high impedance (>1 µA leakage 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 and low incremental surge resistance.
It complies with ANSI/IEEE C62.35 for transient suppression and meets J-STD-020 MSL Level 1 (260 °C peak reflow). The halogen-free, RoHS-compliant HM3 suffix confirms compliance with automotive-grade material requirements per AEC-Q101 stress tests including HTRB, HTGB, and temperature cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before significant leakage; must exceed system rail by ≥10 % to avoid false triggering. |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Confirmed breakdown range ensures reliable turn-on during transients while avoiding premature conduction. |
| VC @ IPPM | ≤35.5 V at 28.2 A - Clamping voltage defines worst-case stress on protected IC; must stay below its absolute maximum rating. |
| PPPM | 1000 W (10/1000 µs) - Peak surge energy handling capacity suitable for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3/4 threats. |
| RθJA | 72 °C/W - Thermal resistance determines junction temperature rise under sustained surge duty; requires minimum 5.0 mm × 5.0 mm copper pad per terminal. |
| AEC-Q101 | Qualified - Validated for automotive underhood and cabin applications including engine control, ADAS sensors, and infotainment interfaces. |
| Package | SMB (DO-214AA) - Surface-mount outline with cathode band marking; compatible with standard 8 mm tape-and-reel feeders (I-code = 3200 pcs/reel). |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point in protected path; establishes reference for clamping action. |
| Cathode | High-side surge input | Connected to line being protected (e.g., 24 V supply or CAN_H); conducts surge current to anode during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | HM3 suffix confirms full compliance with automotive material restrictions (JESD201 Class 2 whisker resistance, no brominated flame retardants). |
| AEC-Q101 qualification | Validated for automotive use across -55 °C to +150 °C junction temperature, including HTRB, HTGB, and mechanical shock testing. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes voltage overshoot during surge events, reducing risk of latch-up or gate oxide damage in protected MOSFETs or microcontrollers. |
| Fast response time (<1 ps) | Enables effective suppression of nanosecond-scale ESD and fast-rising inductive switching transients before downstream devices are stressed. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard 260 °C peak reflow without baking-reducing manufacturing overhead and yield loss. |
Applications
| Automotive Sensor Interface | Industrial 24 V PLC Input |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt clamping device placed between signal line and chassis ground, triggered only during >24.4 V transients. Use Value: Limits voltage seen by 3.3 V or 5 V sensor signal conditioning ICs to ≤35.5 V, preventing permanent damage during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to 24 V DC field wiring with inductive solenoid loads. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each discrete input channel, mounted directly at connector entry point. Use Value: Absorbs 1000 W surges from relay coil de-energization without degradation, maintaining signal integrity and eliminating need for external RC snubbers. |
| Automotive Body Control Module | Telecom Power Supply Rail |
|
Use Scenario: Guarding microcontroller GPIOs and LED driver inputs in door module ECUs against ESD and cable discharge events. IC Role / Device Role / Timing Role: Localized TVS at PCB-level I/O connectors, providing sub-nanosecond response to ±8 kV contact ESD (IEC 61000-4-2). Use Value: Prevents latch-up and resets in 32-bit ARM-based MCUs by clamping transients within 100 ps, verified per AEC-Q101 ESD test protocol. |
Use Scenario: Secondary surge protection on +48 V telecom power distribution boards upstream of DC/DC converters and PoE injectors. IC Role / Device Role / Timing Role: Coordinated clamping stage working with upstream MOVs to limit let-through energy to <10 J per event. Use Value: Enables robust 1000 W peak handling at 48 V rail with ≤35.5 V clamping, ensuring downstream silicon remains within safe SOA during IEC 61000-4-5 combination wave surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22AHE3_A/H | Same VWM (22 V), VBR (24.4–26.9 V), PPPM (1000 W), but E3 suffix (RoHS-compliant, non-halogen-free, commercial grade). | Lacks AEC-Q101 qualification and JESD201 Class 2 whisker resistance; not approved for automotive underhood use. | Select when cost-sensitive industrial or consumer designs require identical electrical specs without automotive certification. |
| SMAJ22A-M3/5B | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (~100 °C/W), same VWM/VBR range. | Insufficient for ISO 7637-2 Pulse 5a; limited to lower-energy threats like IEC 61000-4-2 ESD or basic board-level transients. | Choose for space-constrained PCBs where 400 W surge capability suffices and automotive qualification is not required. |
Compared with SMB10J22AHM3_B/I, SMBJ22AHE3_A/H offers identical clamping performance but lacks halogen-free and AEC-Q101 validation, while SMAJ22A-M3/5B reduces footprint at the cost of 60 % lower surge rating and higher thermal resistance-making SMB10J22AHM3_B/I the only option meeting full automotive-grade 1000 W/28.2 A requirements in SMB form factor.
Availability
SMB10J22AHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial 24 V PLC inputs, body control module ESD hardening, and telecom 48 V rail surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMB10J22AHM3_B/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, power density, and automotive qualification.
The SMB10JxxA series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for AEC-Q101-compliant automotive and harsh-environment industrial surge protection where 1000 W clamping and low thermal resistance are critical.
FAQ
What is the clamping voltage of SMB10J22AHM3_B/I at its rated peak pulse current?
The SMB10J22AHM3_B/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 the standard 10/1000 µs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J22AHM3_B/I maintains this clamping performance across its qualified operating temperature range of -55 °C to +150 °C.
Is SMB10J22AHM3_B/I suitable for automotive applications?
Yes, SMB10J22AHM3_B/I is AEC-Q101 qualified and specifically designed for automotive use. Its HM3 suffix denotes halogen-free, RoHS-compliant construction validated for automotive underhood and cabin environments-including engine control units, ADAS sensor interfaces, and body control modules. The SMB10J22AHM3_B/I passes all required stress tests such as high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling.
What is the meaning of the "HM3_B/I" suffix in SMB10J22AHM3_B/I?
The "HM3" portion indicates halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance; "B" denotes revision level; and "I" specifies packaging in 13-inch diameter tape-and-reel format containing 3200 units. This full suffix confirms the SMB10J22AHM3_B/I meets automotive material and logistics requirements-distinct from commercial-grade E3 or HE3 variants.
How does SMB10J22AHM3_B/I compare to SMBJ22AHE3_A/H in terms of reliability for automotive use?
SMB10J22AHM3_B/I is AEC-Q101 qualified and halogen-free (HM3), whereas SMBJ22AHE3_A/H carries only RoHS compliance (E3) and lacks automotive qualification. The SMB10J22AHM3_B/I undergoes additional stress screening including HTRB and temperature cycling per AEC-Q101, making it the only suitable choice for production automotive systems. Both share identical electrical specs, but only SMB10J22AHM3_B/I is approved for underhood deployment.
What PCB layout guidance applies to SMB10J22AHM3_B/I for optimal thermal and electrical performance?
For optimal performance, mount SMB10J22AHM3_B/I on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Use short, direct traces to minimize inductance; place the device as close as possible to the protected connector or IC pin. Avoid thermal relief on pads to maximize heat dissipation-the SMB10J22AHM3_B/I's RθJA of 72 °C/W assumes this layout. Ensure cathode band orientation matches silkscreen polarity marking.
SMB10J22AHM3_B/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:
- 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/I FAQ
1.How can I place an order for SMB10J22AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J22AHM3_B/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_B/I reliable?
The price and inventory of SMB10J22AHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for SMB10J22AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J22AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J22AHM3_B/I?
SMB10J22AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J22AHM3_B/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_B/I?
For technical support, including SMB10J22AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J22AHM3_B/I requirements.
6.How does Aetrix verify that SMB10J22AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMB10J22AHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of SMB10J22AHM3_B/I?
All SMB10J22AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J22AHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for SMB10J22AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J22AHM3_B/I Tags
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