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Vishay General Semiconductor - Diodes Division SMB10J26AHM3_A/H
- Part No.:
- SMB10J26AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J26AHM3_A/H.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,786
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Product details
Overview
SMB10J26AHM3_A/H 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), 26 V stand-off voltage (VWM), and 42.1 V clamping voltage (VC) at 23.8 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, MOSFET gates, and IC power rails against inductive switching transients.
For engineers reviewing the SMB10J26AHM3_A/H datasheet, SMB10J26AHM3_A/H pinout, SMB10J26AHM3_A/H application, or SMB10J26AHM3_A/H equivalent, key selection criteria include clamping performance under 10/1000 µs surges, 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 TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its breakdown threshold (28.9–31.9 V), it avalanches to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response (<1 ns), while the SMB package supports MSL Level 1 handling and 260 °C reflow peak temperature.
The device is rated for -55 °C to +150 °C operating junction temperature, with 100 A non-repetitive forward surge capability (8.3 ms half-sine) and low incremental surge resistance-critical for maintaining low clamping voltage during high-current transients in automotive power electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse working voltage before conduction begins |
| VBR min/max | 28.9 V / 31.9 V - breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 42.1 V - clamps to this voltage at 23.8 A peak pulse current, limiting stress on protected ICs |
| PPPM | 1000 W - peak pulse power handling for 10/1000 µs waveform, enabling robust ESD/Lightning-level immunity |
| IPPM | 23.8 A - maximum surge current it can safely shunt without degradation |
| RθJA | 72 °C/W - thermal resistance from junction to ambient on standard 0.2" × 0.2" pads, guiding heatsinking needs |
| TJ max | +150 °C - maximum allowable junction temperature, supporting under-hood automotive use |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended pad layout: 5.59 mm × 2.18 mm minimum per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return plane; must handle 100 A surge for 8.3 ms |
| Cathode | Protected line connection / surge input | Connected to signal or power rail being protected; marked by color band; reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA) over temperature and lifetime |
| MSL Level 1 rating | Enables direct placement into high-volume SMT lines without baking or special handling |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on protected devices during 10/1000 µs transients |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental compliance requirements and JESD201 Class 2 whisker resistance |
Applications
| Automotive Sensor Protection | Power Rail Clamping |
|---|---|
Use Scenario: Protecting LIN/CAN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and ground, activated only during overvoltage events. Use Value: Limits transient voltage to ≤42.1 V, preventing latch-up or damage to 5 V or 3.3 V interface ICs in harsh vehicle environments. | Use Scenario: Safeguarding 24 V supply inputs of body control modules and lighting drivers against battery reversal and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional clamp connected anode-to-ground, cathode-to-rail, absorbing positive-going spikes. Use Value: Withstands 1000 W surges and 100 A forward surge, enabling reliable operation without derating in 12/24 V automotive systems. |
| MOSFET Gate Protection | Industrial I/O Interface |
Use Scenario: Shielding high-side N-channel MOSFET gates in motor drivers from Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Fast-acting voltage clamp placed between gate and source, suppressing dv/dt-induced false turn-on. Use Value: Sub-ns response and low VC prevent unintended conduction and gate oxide overstress in 40 V-rated power stages. | Use Scenario: Protecting RS-485/RS-232 transceiver pins and PLC digital inputs from EFT, ESD, and surge in factory automation equipment. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on field-side signal lines, upstream of isolation barriers. Use Value: 1000 W rating and 72 °C/W RθJA allow sustained protection in enclosed enclosures without active cooling. |
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), identical SMB package, but lower PPPM (600 W) and higher VC (42.8 V) | Not AEC-Q101 qualified; suitable for commercial-grade industrial use only | Select when automotive qualification is unnecessary and cost sensitivity outweighs surge margin |
| SMCJ26A-HM3 | Same VWM and VC, but larger SMC (DO-214AB) package with 1500 W PPPM and higher IFSM (200 A) | Higher thermal mass enables longer surge duration handling; requires larger PCB area | Select when system-level surge tests exceed 1000 W or require extended 8.3 ms surge endurance |
Compared with SMBJ26AHE3_A/H and SMCJ26A-HM3, SMB10J26AHM3_A/H uniquely balances AEC-Q101 compliance, 1000 W surge capacity, and compact SMB footprint-making it optimal for space-constrained automotive ECUs where qualification and reliability are non-negotiable.
Availability
SMB10J26AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and MOSFET gate safeguarding requiring stable component supply across production lifecycles.
Supply support for SMB10J26AHM3_A/H 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, TVS, and optoelectronics with emphasis on reliability, automotive qualification, and high-power density packaging.
The SMB10J series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for demanding automotive and industrial surge environments where consistent clamping, AEC-Q101 validation, and SMT manufacturability are essential.
FAQ
What is the breakdown voltage range of SMB10J26AHM3_A/H?
The SMB10J26AHM3_A/H has a specified breakdown voltage (VBR) range of 28.9 V to 31.9 V at 1 mA test current, per Vishay Document 88422. This range ensures consistent avalanche initiation across production lots and temperature extremes, directly supporting its role as a precision clamping device in automotive power domains. The SMB10J26AHM3_A/H maintains this specification under AEC-Q101 stress conditions.
Is SMB10J26AHM3_A/H suitable for bidirectional transient protection?
No, SMB10J26AHM3_A/H is a unidirectional TVS diode, indicated by the "J" (not "JCA") suffix and absence of bidirectional electrical characteristics in its datasheet table. For bidirectional protection at 26 V, Vishay offers SMB8J26CA variants. The SMB10J26AHM3_A/H must be installed with cathode toward the protected line and anode to ground to function correctly.
Does SMB10J26AHM3_A/H meet automotive qualification standards?
Yes, SMB10J26AHM3_A/H is explicitly AEC-Q101 qualified, as confirmed in the "MECHANICAL DATA" section of Vishay Document 88422 and denoted by the "HM3" suffix (halogen-free, RoHS-compliant, AEC-Q101 qualified). This qualification covers stress tests including HTGB, AC/DC life test, temperature cycling, and mechanical shock-validating its suitability for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage of SMB10J26AHM3_A/H at rated surge current?
The SMB10J26AHM3_A/H clamps to a maximum of 42.1 V at its rated peak pulse current (IPPM) of 23.8 A, measured under the standard 10/1000 µs waveform. This value is critical for ensuring downstream 3.3 V or 5 V logic components remain within absolute maximum ratings during surge events. The SMB10J26AHM3_A/H achieves this with a clamping ratio (VC/VBR) of approximately 1.4.
Can SMB10J26AHM3_A/H be used in automated SMT assembly processes?
Yes, SMB10J26AHM3_A/H is optimized for automated placement: it 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 JESD22-B102. Its SMB (DO-214AA) package geometry and cathode band marking enable high-yield vision-based pick-and-place, making SMB10J26AHM3_A/H ideal for high-volume automotive electronics manufacturing.
SMB10J26AHM3_A/H 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):
- 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_A/H FAQ
1.How can I place an order for SMB10J26AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J26AHM3_A/H 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_A/H reliable?
The price and inventory of SMB10J26AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J26AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMB10J26AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J26AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J26AHM3_A/H?
SMB10J26AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J26AHM3_A/H 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_A/H?
For technical support, including SMB10J26AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J26AHM3_A/H requirements.
6.How does Aetrix verify that SMB10J26AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J26AHM3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of SMB10J26AHM3_A/H?
All SMB10J26AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J26AHM3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for SMB10J26AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J26AHM3_A/H Tags
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