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Vishay General Semiconductor - Diodes Division SMB10J26AHM3_B/I
- Part No.:
- SMB10J26AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J26AHM3_B/I.pdf
- Description:
- 1KW,26V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,200
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Product details
Overview
SMB10J26AHM3_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 in automotive and industrial power rails. It features a 26 V stand-off voltage (VWM), 42.1 V clamping voltage (VC) at 23.8 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform. Used to protect MOSFETs, microcontrollers, and sensor interfaces against inductive switching transients.
For engineers reviewing the SMB10J26AHM3_B/I datasheet, SMB10J26AHM3_B/I pinout, SMB10J26AHM3_B/I application, or SMB10J26AHM3_B/I equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance data, clamping behavior under surge, and automotive-grade packaging details - all critical for ESD/surge hardening in 12 V/24 V systems.
Technical Context
This TVS diode operates as a unidirectional clamping device with a breakdown voltage range of 28.9 V to 31.9 V at 1 mA test current, enabling precise overvoltage thresholding on DC power lines. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of fast-rising transients such as load dump and ISO 7637-2 pulses.
Thermally, it exhibits RθJA = 72 °C/W and RθJL = 20 °C/W, supporting reliable operation up to TJ = 150 °C. The device is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirming suitability for under-hood automotive environments where thermal cycling and long-term reliability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before conduction begins; sets safe margin above nominal 24 V rail. |
| VBR min/max | 28.9 V / 31.9 V - breakdown occurs within this band at 1 mA; defines turn-on threshold tolerance for surge detection. |
| VC @ IPPM | 42.1 V - clamped voltage during 23.8 A 10/1000 µs surge; determines maximum stress imposed on protected downstream ICs. |
| PPPM | 1000 W - peak pulse power handling capability; supports robust protection against ISO 16750-2 and ISO 7637-2 Pulse 5a/b events. |
| TJ max | +150 °C - maximum junction temperature; enables use in engine control units and power distribution modules with high ambient heat. |
| RθJA | 72 °C/W - thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs PCB thermal design requirements. |
| AEC-Q101 | Qualified - certified for automotive applications per stress test standard; validates reliability for safety-critical ECUs and ADAS sensors. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode reference for unidirectional clamping | Connected to protected line; conducts when line voltage exceeds VBR relative to ground. |
| Anode | Ground reference terminal | Connected to system ground or low-impedance return path; completes clamping loop during surge event. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with environmental regulations and automotive material restrictions (e.g., ELV, REACH). |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift in humid environments. |
| MSL Level 1 (260 °C peak) | Enables compatibility with standard lead-free reflow profiles without preconditioning or baking. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive 3.3 V/5 V logic interfaces. |
| 100 A IFSM rating | Supports survival under repetitive 8.3 ms half-sine surges - critical for alternator load-dump immunity in 12 V systems. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protection of 24 V supply rail in body control modules against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤42.1 V during 1000 W surges, preventing damage to buck controller ICs rated for 45 V absolute maximum. | Use Scenario: Guarding gate driver inputs in 3-phase inverter stacks exposed to back-EMF spikes from brushless motors. IC Role / Device Role / Timing Role: Fast-response clamping element on isolated gate drive power rails (e.g., +15 V bias supply). Use Value: Sub-1 ns response ensures clamping initiates before gate oxide breakdown, preserving IGBT/MOSFET reliability across 100,000+ switching cycles. |
| Automotive Sensor Interface | Telecom Power Supply Input |
Use Scenario: Shielding LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) in chassis modules. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA at 26 V) TVS placed upstream of ESD protection diodes and LDO regulators. Use Value: Maintains signal integrity with <1 µA reverse leakage while clamping ISO 10605 ESD strikes to <42.1 V, avoiding false resets or ADC offset shifts. | Use Scenario: Primary surge suppression on -48 V telecom rectifier outputs feeding distributed power architecture boards. IC Role / Device Role / Timing Role: High-power unidirectional clamp on negative rail, referenced to system ground with cathode tied to -48 V line. Use Value: Handles 1000 W pulses without degradation, meeting GR-1089-CORE Level 3 lightning surge requirements for central office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26AHE3_A/H | Same VWM (26 V), same SMB package, but E3 suffix indicates commercial-grade (non-AEC-Q101) and RoHS-compliant only (not halogen-free). | Lacks AEC-Q101 qualification and halogen-free certification; unsuitable for automotive OEM production. | Select only for cost-sensitive industrial prototypes where automotive qualification is not required. |
| SMCJ26A-Q | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VWM and clamping voltage. | Requires larger PCB footprint and higher thermal mass; better suited for high-energy 48 V systems or hybrid power architectures. | Choose when surge energy exceeds 1000 W or when board layout allows SMC footprint and enhanced thermal dissipation. |
Compared with SMBJ26AHE3_A/H and SMCJ26A-Q, SMB10J26AHM3_B/I uniquely combines AEC-Q101 qualification, halogen-free construction, and optimized 1000 W capability in the compact SMB footprint - making it the preferred choice for space-constrained, thermally demanding automotive ECUs requiring full compliance traceability.
Availability
SMB10J26AHM3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drives, and telecom power supply designs requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMB10J26AHM3_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 high-reliability, automotive-qualified components.
The SMB10JxxA series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in harsh automotive and industrial environments where AEC-Q101 validation and thermal robustness are mandatory.
FAQ
What is the clamping voltage of SMB10J26AHM3_B/I at its rated peak pulse current?
The SMB10J26AHM3_B/I has a maximum clamping voltage (VC) of 42.1 V when subjected to its rated peak pulse current (IPPM) of 23.8 A under a 10/1000 µs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings. The SMB10J26AHM3_B/I maintains this clamping performance across its qualified operating temperature range.
Is SMB10J26AHM3_B/I qualified for automotive applications?
Yes, SMB10J26AHM3_B/I is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HM3_B/I", where "H" denotes AEC-Q101 qualification and "M3" indicates halogen-free, RoHS-compliant construction. This certification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its use in engine control units, body electronics, and ADAS modules. The SMB10J26AHM3_B/I meets automotive reliability and traceability requirements out-of-the-box.
What does the "HM3_B/I" suffix mean in SMB10J26AHM3_B/I?
The "HM3_B/I" suffix in SMB10J26AHM3_B/I decodes as follows: "H" = AEC-Q101 qualified; "M3" = halogen-free and RoHS-compliant; "B" = revision code; "I" = packaging format - 13-inch tape-and-reel with 3200 units per reel. This distinguishes it from commercial variants (e.g., E3 or M3 alone) and confirms full automotive-grade compliance. The SMB10J26AHM3_B/I is supplied in moisture-sensitive level 1 packaging compatible with standard lead-free reflow.
How does SMB10J26AHM3_B/I compare to SMBJ26A in terms of surge capability?
SMB10J26AHM3_B/I delivers 1000 W peak pulse power (PPPM) with a 10/1000 µs waveform, matching SMBJ26A's rating, but differs in qualification and construction: SMB10J26AHM3_B/I is AEC-Q101 qualified and halogen-free (HM3), whereas standard SMBJ26A is typically commercial-grade (E3/M3) without automotive validation. Both share identical VWM (26 V) and VC (42.1 V), but only SMB10J26AHM3_B/I guarantees performance across automotive temperature and lifetime requirements.
What is the maximum operating junction temperature for SMB10J26AHM3_B/I?
The maximum operating junction temperature (TJ max) for SMB10J26AHM3_B/I is +150 °C, as specified in Vishay's datasheet Document Number 88422. This rating enables reliable operation in under-hood automotive locations and industrial enclosures with elevated ambient temperatures. Derating curves in the datasheet show usable power capability down to ~60% of PPPM at TJ = 125 °C, ensuring functional margin in real-world thermal environments. The SMB10J26AHM3_B/I sustains this rating with its glass-passivated junction and DO-214AA thermal design.
SMB10J26AHM3_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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 23.8A
- 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)
SMB10J26AHM3_B/I FAQ
1.How can I place an order for SMB10J26AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J26AHM3_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 SMB10J26AHM3_B/I reliable?
The price and inventory of SMB10J26AHM3_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 SMB10J26AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMB10J26AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J26AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J26AHM3_B/I?
SMB10J26AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J26AHM3_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 SMB10J26AHM3_B/I?
For technical support, including SMB10J26AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J26AHM3_B/I requirements.
6.How does Aetrix verify that SMB10J26AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMB10J26AHM3_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 SMB10J26AHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMB10J26AHM3_B/I?
All SMB10J26AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J26AHM3_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 SMB10J26AHM3_B/I part is unused and in its original packaging.
Return procedure for SMB10J26AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J26AHM3_B/I Tags
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