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Vishay General Semiconductor - Diodes Division SMB10J12AHM3_A/I
- Part No.:
- SMB10J12AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J12AHM3_A/I.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,712
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Product details
Overview
SMB10J12AHM3_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 power and signal lines. It features a 12 V stand-off voltage (VWM), 19.9 V maximum clamping voltage (VC) at 50.3 A peak pulse current (IPPM), 1000 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMB10J12AHM3_A/I datasheet, SMB10J12AHM3_A/I pinout, SMB10J12AHM3_A/I application, or SMB10J12AHM3_A/I equivalent, this device is selected for robust ESD and load-dump protection in automotive ECUs, industrial sensor interfaces, and DC power rail conditioning where low clamping voltage and fast response (<1 ns) are critical.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents <1 µA leakage at 12 V, then rapidly avalanches when transients exceed its 13.3–14.7 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable avalanche behavior across -55 °C to +150 °C operating temperature.
The SMB10J12AHM3_A/I uses a single-junction unidirectional structure with cathode-band polarity marking, optimized for placement on PCBs with 5.0 mm × 5.0 mm copper pads per terminal. Its MSL Level 1 rating and matte tin-plated leads support lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 13.3 V / 14.7 V - Breakdown occurs within this range at 1 mA test current; ensures reliable triggering above system overvoltage thresholds. |
| VC @ IPPM | 19.9 V - Clamps transients to ≤19.9 V at 50.3 A peak pulse current (10/1000 µs), limiting downstream IC stress. |
| PPPM | 1000 W - Sustains 1000 W surge power for standard 10/1000 µs waveform, suitable for ISO 7637-2 Pulse 1/2a/5a automotive transients. |
| IFSM | 100 A - Withstands 8.3 ms half-sine surge without failure, enabling protection against battery reverse-connection or jump-start events. |
| Junction Temp | -55 °C to +150 °C - Rated for under-hood automotive environments and industrial enclosures without derating below 25 °C ambient. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress-test requirements including HTOL, TCT, and ESD-HBM/MM. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile (max height 2.20 mm), with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference node | Connected to system ground or low-side return path; carries full surge current during clamping. |
| Cathode | Protected line input | Connected to line being protected (e.g., 12 V supply rail); avalanche conduction occurs from cathode to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMB package | Enables automated pick-and-place assembly and fits tight board spaces typical in automotive modules and sensor housings. |
| Glass-passivated junction | Ensures repeatable, stable avalanche characteristics over lifetime and temperature, minimizing parameter drift in harsh environments. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units, body controllers, and ADAS sensors. |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow without moisture sensitivity concerns or baking requirements. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and enables compliance with automotive OEM material declarations (IMDS, ELV). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of engine control units (ECUs) against ISO 7637-2 load dump and jump-start surges. IC Role / Device Role / Timing Role: Shunt clamping TVS placed between battery rail and LDO/regulator input. Use Value: Limits transient voltage to ≤19.9 V, preventing damage to downstream 3.3 V/5 V logic and analog front-ends. |
Use Scenario: Safeguarding RS-485 or CAN transceiver I/O lines in factory automation PLCs exposed to motor switching noise. IC Role / Device Role / Timing Role: Bidirectional-capable protection (via paired devices) or unidirectional rail clamp on VCC pins. Use Value: Sub-1 ns response time suppresses fast-edge transients before they couple into communication ICs. |
| DC-DC Converter Input Protection | Consumer Power Adapter Output Protection |
Use Scenario: Input-stage surge suppression for 12 V–48 V isolated DC-DC converters in telecom power supplies. IC Role / Device Role / Timing Role: Primary-line TVS upstream of input filter and primary-side controller. Use Value: 1000 W rating handles repetitive surges from AC line transients coupled through transformer parasitics. |
Use Scenario: Output overvoltage clamping in USB-C PD adapters to prevent damage to connected devices during regulation fault. IC Role / Device Role / Timing Role: Secondary-side unidirectional clamp on regulated 5 V/9 V/15 V output rails. Use Value: Tight 12 V VWM and 19.9 V VC ensure compatibility with USB PD voltage tolerance windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12AHE3_A/H | Same VWM/VC/PPPM, but commercial-grade (non-AEC-Q101); RoHS-compliant E3 suffix. | Lacks automotive qualification; suitable for industrial/commercial designs not requiring AEC validation. | Select when automotive qualification is unnecessary and cost optimization is prioritized. |
| SMB10J12AHM3_B/I | Identical electrical specs and AEC-Q101 qualification; differs only in revision code (B vs. A) and reel quantity (3200 vs. unspecified in A/I). | No functional or application difference; revision B may include minor process enhancements per Vishay internal change notice. | Use interchangeably where revision-specific validation is not mandated by OEM design release. |
Compared with SMB10J12AHM3_A/I, the SMBJ12AHE3_A/H offers identical protection performance without automotive qualification-ideal for non-automotive volume production-while SMB10J12AHM3_B/I provides a functionally identical revision with updated traceability and packaging, supporting long-term supply continuity.
Availability
SMB10J12AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and DC-DC converter prototyping requiring stable component supply with guaranteed AEC-Q101 compliance and halogen-free materials.
Supply support for SMB10J12AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SMB10J series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density transient suppression in space-constrained automotive and industrial systems where clamping precision and surge endurance are critical.
FAQ
What is the clamping voltage of SMB10J12AHM3_A/I at its rated peak pulse current?
The SMB10J12AHM3_A/I has a maximum clamping voltage (VC) of 19.9 V when subjected to its specified peak pulse current of 50.3 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 19.9 V during standardized surge events, making SMB10J12AHM3_A/I suitable for protecting 12 V systems with tight voltage margins.
Is SMB10J12AHM3_A/I qualified for automotive applications?
Yes, SMB10J12AHM3_A/I is AEC-Q101 qualified, as confirmed in Vishay document 88422 (Revision 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating SMB10J12AHM3_A/I for use in engine compartments, body control modules, and other automotive subsystems requiring extended reliability.
What does the "HM3" suffix indicate in SMB10J12AHM3_A/I?
The "HM3" suffix in SMB10J12AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" stands for AEC-Q101, "M3" indicates halogen-free and RoHS-compliant materials, and the "_A/I" specifies the revision code (A) and tape-and-reel delivery format (I = 13-inch reel, 3200 units). This distinguishes it from commercial-grade variants like E3 or M3-only versions.
How does SMB10J12AHM3_A/I differ from SMBJ12AHE3_A/H?
SMB10J12AHM3_A/I and SMBJ12AHE3_A/H share identical electrical parameters (VWM = 12 V, VC = 19.9 V, PPPM = 1000 W), but SMB10J12AHM3_A/I carries AEC-Q101 qualification and halogen-free construction (HM3), whereas SMBJ12AHE3_A/H is commercial-grade (HE3) without automotive qualification. SMB10J12AHM3_A/I is required for automotive designs; SMBJ12AHE3_A/H suffices for industrial or consumer use.
What is the thermal resistance of SMB10J12AHM3_A/I, and how does it affect layout?
SMB10J12AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain safe operation under repeated surges, PCB layout must use minimum 5.0 mm × 5.0 mm copper pads per terminal as specified in Vishay's recommended mounting pad layout-reducing thermal impedance and preventing localized overheating during high-energy transients.
SMB10J12AHM3_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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 50.3A
- 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)
SMB10J12AHM3_A/I FAQ
1.How can I place an order for SMB10J12AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J12AHM3_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 SMB10J12AHM3_A/I reliable?
The price and inventory of SMB10J12AHM3_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 SMB10J12AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMB10J12AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J12AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J12AHM3_A/I?
SMB10J12AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J12AHM3_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 SMB10J12AHM3_A/I?
For technical support, including SMB10J12AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J12AHM3_A/I requirements.
6.How does Aetrix verify that SMB10J12AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB10J12AHM3_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 SMB10J12AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMB10J12AHM3_A/I?
All SMB10J12AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J12AHM3_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 SMB10J12AHM3_A/I part is unused and in its original packaging.
Return procedure for SMB10J12AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J12AHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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