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Vishay General Semiconductor - Diodes Division SMB10J20AHM3/I
- Part No.:
- SMB10J20AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J20AHM3/I.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,673
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Product details
Overview
SMB10J20AHM3/I 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), 20 V stand-off voltage (VWM), and 32.4 V clamping voltage (VC) at 30.9 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, MOSFET gate drivers, and microcontroller I/O pins against inductive switching transients.
For engineers reviewing the SMB10J20AHM3/I datasheet, SMB10J20AHM3/I pinout, SMB10J20AHM3/I application, or SMB10J20AHM3/I equivalent, key selection criteria include clamping performance under 10/1000 µs surge, AEC-Q101 qualification status, unidirectional polarity, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode that enters breakdown when reverse voltage exceeds its 22.2–24.5 V breakdown range (VBR at 1 mA), limiting transient energy by clamping to ≤32.4 V while diverting up to 30.9 A. Its glass-passivated junction ensures stable leakage (<1.0 µA at 20 V) and fast response time (<1 ns).
Designed for surface-mount use in automotive-grade systems, SMB10J20AHM3/I meets MSL Level 1 per J-STD-020, supports peak reflow temperatures up to 260 °C, and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 22.2 V / 24.5 V - breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 32.4 V - clamped voltage during 30.9 A 10/1000 µs surge, directly limiting protected circuit stress |
| PPPM | 1000 W - peak pulse power handling capability under standard 10/1000 µs waveform |
| RθJA | 72 °C/W - junction-to-ambient thermal resistance on recommended 5.0 mm × 5.0 mm copper pads |
| TJ max | +150 °C - maximum allowable junction temperature, enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for lead-free soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential node in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line; color band identifies this end for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA) across temperature and lifetime |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor interfaces |
| MSL Level 1 rating | Enables direct placement without baking; compatible with standard 260 °C peak reflow profiles |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping fidelity |
| Halogen-free & RoHS-compliant (HM3 suffix) | Fulfills environmental compliance requirements for global automotive OEM supply chains |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp negative-going transients and prevent latch-up in interface ICs. Use Value: Clamps to 32.4 V at 30.9 A, keeping downstream PHY voltage within safe operating area of 3.3 V or 5 V transceivers. | Use Scenario: Safeguarding PLC digital input modules and encoder feedback lines exposed to relay coil flyback and contact arcing in factory automation. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 100–500 V spikes induced by inductive switching in 24 V DC control circuits. Use Value: Withstands 1000 W surges and maintains <1.0 µA leakage at 20 V, ensuring no false triggering during normal 24 V operation. |
| Automotive Power Supply Rail | Microcontroller GPIO Protection |
Use Scenario: Secondary overvoltage protection on 12 V battery-fed subsystem rails (e.g., infotainment power inputs) after primary DC/DC converter filtering. IC Role / Device Role / Timing Role: Fast-clamping TVS shunting transients exceeding 20 V before they reach LDOs or PMICs. Use Value: 72 °C/W RθJA allows effective heat dissipation on standard PCB copper, supporting sustained surge duty in engine bay environments. | Use Scenario: Input/output line protection for automotive-grade MCUs (e.g., RH850, S32K) in body control modules and lighting controllers. IC Role / Device Role / Timing Role: Low-capacitance unidirectional suppressor guarding GPIO pins against ESD (IEC 61000-4-2) and cable discharge events. Use Value: Sub-nanosecond response and 32.4 V clamping prevent MCU core damage while maintaining signal integrity on 5 V-tolerant I/O. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20AHE3/A | Same VWM (20 V), identical SMB package, but rated for 600 W PPPM (vs. 1000 W) | Lower surge capacity limits use to non-automotive or lower-risk industrial settings | Select when cost sensitivity outweighs need for full AEC-Q101 + 1000 W capability |
| SMCJ20A-Q | Higher power (1500 W), larger SMC (DO-214AB) package, same VWM and clamping | Requires PCB layout change; suited for higher-energy transients where space permits | Choose when system-level surge testing exceeds 1000 W requirements and board area allows SMC footprint |
Compared with SMBJ20AHE3/A and SMCJ20A-Q, SMB10J20AHM3/I uniquely delivers 1000 W surge rating in an AEC-Q101-qualified SMB package-enabling automotive-grade protection without footprint or thermal derating penalties.
Availability
SMB10J20AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor control I/O, and microcontroller GPIO protection requiring stable component supply and long-term lifecycle support.
Supply support for SMB10J20AHM3/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, and protection devices with emphasis on reliability, power density, and automotive qualification.
SMB10J20AHM3/I belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for robust transient suppression in harsh automotive and industrial environments where AEC-Q101 compliance and 1000 W surge capability are mandatory.
FAQ
What is the clamping voltage of SMB10J20AHM3/I at its rated peak pulse current?
The SMB10J20AHM3/I has a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current (IPPM) of 30.9 A under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C on 5.0 mm × 5.0 mm copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J20AHM3/I maintains this clamping performance across its qualified operating temperature range.
Is SMB10J20AHM3/I suitable for automotive applications?
Yes, SMB10J20AHM3/I is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It meets MSL Level 1, supports 260 °C peak reflow, and is validated for temperature cycling, high-temperature reverse bias, and ESD robustness-making it appropriate for engine control units, body electronics, and ADAS sensor interfaces. The SMB10J20AHM3/I data sheet confirms qualification per AEC-Q101 Rev D.
What does the "HM3" suffix indicate in SMB10J20AHM3/I?
The "HM3" suffix in SMB10J20AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade (E3/M3) or non-automotive qualified versions. The "I" denotes 13-inch tape-and-reel packaging (3200 units per reel), while "HM3" confirms compliance with automotive environmental and reliability standards. This makes SMB10J20AHM3/I suitable for Tier 1 automotive supply chains requiring full material and qualification traceability.
How does SMB10J20AHM3/I differ from SMBJ20A?
SMB10J20AHM3/I delivers 1000 W peak pulse power (PPPM) versus 600 W for standard SMBJ20A, due to optimized chip construction and thermal design. It also carries AEC-Q101 qualification and HM3 environmental compliance-features absent in base SMBJ20A. Both share the same SMB package and 20 V stand-off, but SMB10J20AHM3/I is engineered for higher-energy automotive transients. The SMB10J20AHM3/I datasheet specifies tighter VBR tolerance and lower RθJA (72 °C/W vs. ~80 °C/W typical for SMBJ).
What is the maximum operating temperature for SMB10J20AHM3/I?
The SMB10J20AHM3/I has a maximum junction temperature (TJ max) of +150 °C, as specified in its Vishay datasheet (Document Number: 88422). This rating enables reliable operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. Derating curves in Figure 2 confirm usable power capability down to ~75 % of rated PPPM at TJ = 125 °C, and the device remains functional up to its absolute maximum TJ limit. SMB10J20AHM3/I thermal performance is validated on standard 5.0 mm × 5.0 mm copper pads.
SMB10J20AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 30.9A
- 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)
SMB10J20AHM3/I FAQ
1.How can I place an order for SMB10J20AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J20AHM3/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 SMB10J20AHM3/I reliable?
The price and inventory of SMB10J20AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J20AHM3/I is usually 5 days.
3.What payment methods are accepted for SMB10J20AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J20AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J20AHM3/I?
SMB10J20AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J20AHM3/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 SMB10J20AHM3/I?
For technical support, including SMB10J20AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J20AHM3/I requirements.
6.How does Aetrix verify that SMB10J20AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMB10J20AHM3/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 SMB10J20AHM3/I meets industry standards.
7.What is the process for return or replacement of SMB10J20AHM3/I?
All SMB10J20AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J20AHM3/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 SMB10J20AHM3/I part is unused and in its original packaging.
Return procedure for SMB10J20AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J20AHM3/I Tags
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