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Vishay General Semiconductor - Diodes Division SMB10J26AHM3_A/I
- Part No.:
- SMB10J26AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J26AHM3_A/I.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB10J26AHM3_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 DC power rails and signal lines. It features a 26 V stand-off voltage (VWM), 42.1 V maximum clamping voltage at 23.8 A peak pulse current (10/1000 µs), and 1000 W peak pulse power rating. Used in automotive sensor interfaces and industrial control I/O protection where AEC-Q101 qualification and low incremental surge resistance are critical.
For engineers reviewing the SMB10J26AHM3_A/I datasheet, SMB10J26AHM3_A/I pinout, SMB10J26AHM3_A/I application, or SMB10J26AHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), junction temperature limit (150 °C), and exact package dimensions per DO-214AA - all essential for ESD/surge margin analysis and layout validation.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 26 V (VWM) and rapidly transitions to low-impedance conduction above its 28.9–31.9 V breakdown range (VBR at 1 mA), limiting transient voltages to ≤42.1 V during 10/1000 µs surges up to 1000 W. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and repeatable clamping performance across temperature.
The SMB10J26AHM3_A/I is halogen-free and RoHS-compliant (HM3 suffix), qualified to AEC-Q101 for automotive use, and rated for operation from –55 °C to +150 °C. Its MSL Level 1 rating (260 °C peak reflow) supports standard SMT assembly without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR min/max | 28.9 V / 31.9 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on under transients. |
| VC @ IPPM | 42.1 V at 23.8 A - Clamped voltage during full-rated 10/1000 µs surge; determines protected circuit's worst-case overvoltage. |
| PPPM | 1000 W - Peak pulse power handling with 10/1000 µs waveform; defines energy absorption capacity. |
| TJ max | +150 °C - Maximum junction temperature; sets thermal derating boundary for sustained surge duty cycles. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance on 0.2" × 0.2" copper pads; enables PCB thermal design verification. |
| Polarity | Unidirectional - Cathode marked by band; blocks reverse current until breakdown, enabling DC rail protection. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. 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 | Forward current entry (for unidirectional conduction) | Connected to lower-potential side of protected line; carries surge current into device during overvoltage events. |
| Cathode | Clamping output node (marked with band) | Connected to higher-potential side (e.g., VCC rail); sinks surge current to ground or return path when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces requiring reliability under thermal cycling and vibration. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for global automotive and industrial OEMs without compromising surge robustness. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 13.2 V) versus competing TVS devices, reducing stress on downstream ICs like microcontrollers and CAN transceivers. |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without baking or special handling, simplifying manufacturing for high-volume automotive PCB assembly. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines feeding Hall-effect or temperature sensors in engine bay environments subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor VDD and chassis ground to shunt transients before they reach the sensor IC's internal LDO or ESD structures. Use Value: Limits voltage to ≤42.1 V during 1000 W surges, preventing latch-up or permanent damage to sensor front-end circuitry while maintaining <1 µA leakage at 26 V nominal. | Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring inductive spikes. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals to clamp fast-rising transients (e.g., 100 ns rise time) before they propagate into optocoupler or Schmitt-trigger input stages. Use Value: Delivers 23.8 A peak surge current handling with 42.1 V clamping, ensuring reliable input state retention and eliminating false triggering caused by >100 V transients. |
| Automotive Body Control Module (BCM) Power Rail | Telecom Equipment DC Power Entry |
Use Scenario: Secondary overvoltage protection on fused 12 V/24 V power distribution networks inside BCMs, supplementing primary fusing and upstream TVS arrays. IC Role / Device Role / Timing Role: Fast-response unidirectional TVS placed directly at power entry points to absorb localized surges from nearby solenoid actuation or alternator ripple. Use Value: With 1000 W PPPM and 72 °C/W RθJA, it sustains repeated 10/1000 µs surges without thermal runaway, extending system lifetime in harsh automotive ambient conditions. | Use Scenario: Protecting 48 V DC power inputs on telecom base station remote radio units (RRUs) against lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping element in multi-stage protection scheme, positioned before DC-DC converters to prevent overvoltage damage to switching MOSFETs and gate drivers. Use Value: Provides precise 26 V standoff and 42.1 V clamping with <1 µA leakage, minimizing standby power loss while ensuring EN 61000-4-5 Level 4 (4 kV) immunity compliance. |
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/I | Same VWM (26 V), VBR (28.9–31.9 V), and PPPM (1000 W), but E3 suffix indicates standard RoHS (not halogen-free). | Approved for commercial/industrial use; lacks halogen-free certification required by some Tier 1 automotive OEMs. | Select when halogen-free compliance is not mandated and cost optimization is prioritized. |
| SMCJ26A-HM3 | Same electrical specs but in larger SMC (DO-214AB) package; higher RθJA (50 °C/W) and 1500 W PPPM rating. | Better thermal performance and higher surge margin; requires larger PCB footprint and may not fit space-constrained automotive modules. | Select when higher single-pulse energy handling (>1000 W) and improved thermal dissipation are needed despite larger size. |
Compared with SMBJ26AHE3_A/I, SMB10J26AHM3_A/I adds halogen-free compliance for stricter automotive material requirements; compared with SMCJ26A-HM3, it trades 500 W extra surge capacity and lower thermal resistance for compact SMB footprint-critical in dense ECUs where board area is constrained.
Availability
SMB10J26AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input conditioning, and telecom DC power entry applications requiring stable component supply, AEC-Q101 qualification, and halogen-free compliance.
Supply support for SMB10J26AHM3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive-grade qualification.
The SMB10JxxA-HM3 series is engineered for high-reliability transient suppression in space-constrained automotive and industrial systems, delivering AEC-Q101-qualified surge robustness in the industry-standard SMB footprint.
FAQ
What is the clamping voltage of SMB10J26AHM3_A/I at its rated peak pulse current?
The SMB10J26AHM3_A/I has a maximum clamping voltage (VC) of 42.1 V at its rated peak pulse current (IPPM) of 23.8 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's Document Number 88422, ensuring predictable overvoltage limiting for protected circuits. The SMB10J26AHM3_A/I maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C).
Is SMB10J26AHM3_A/I qualified for automotive applications?
Yes, SMB10J26AHM3_A/I is AEC-Q101 qualified, as explicitly stated in Vishay's datasheet (Document Number 88422, Revision 09-Jan-2024). The HM3 suffix denotes halogen-free, RoHS-compliant construction meeting automotive material requirements. It is rated for junction temperatures up to +150 °C and passes MSL Level 1 reflow (260 °C peak), making SMB10J26AHM3_A/I suitable for under-hood and body-control module deployments.
What does the "HM3" suffix mean in SMB10J26AHM3_A/I?
The "HM3" suffix in SMB10J26AHM3_A/I indicates halogen-free, RoHS-compliant construction per Vishay's material categorization (www.vishay.com/doc?99912). It distinguishes this variant from E3 (RoHS only) and HE3 (AEC-Q101 + RoHS) versions. The "_A/I" denotes packaging: "A" is the device marking code (1CE), and "I" specifies 13-inch tape-and-reel delivery (3200 units/reel). SMB10J26AHM3_A/I thus combines automotive qualification with environmentally compliant materials and high-volume SMT packaging.
How does SMB10J26AHM3_A/I differ from bidirectional TVS diodes like SMB8J26CA?
SMB10J26AHM3_A/I is unidirectional, providing clamping only for positive transients relative to its cathode, with forward voltage drop (~3.5 V at 50 A) and 100 A IFSM rating. In contrast, SMB8J26CA is bidirectional, symmetrically clamping both polarities but with lower PPPM (800 W vs. 1000 W) and no forward surge rating. SMB10J26AHM3_A/I is preferred for DC power rail protection where polarity is fixed; SMB8J26CA suits AC-coupled or floating signal lines. Both share identical VWM (26 V) and VC (42.1 V), but SMB10J26AHM3_A/I offers higher single-polarity energy handling.
What is the thermal resistance of SMB10J26AHM3_A/I, and how does it affect layout?
SMB10J26AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay's datasheet. This value assumes standard PCB copper thickness (1 oz) and no internal planes. To maintain safe junction temperature during repeated surges, designers must allocate adequate copper area and avoid excessive trace length between SMB10J26AHM3_A/I terminals and ground/power planes. Reduced pad size increases RθJA, risking thermal overload during high-duty-cycle transients.
SMB10J26AHM3_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):
- 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/I FAQ
1.How can I place an order for SMB10J26AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J26AHM3_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 SMB10J26AHM3_A/I reliable?
The price and inventory of SMB10J26AHM3_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 SMB10J26AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMB10J26AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J26AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J26AHM3_A/I?
SMB10J26AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J26AHM3_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 SMB10J26AHM3_A/I?
For technical support, including SMB10J26AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J26AHM3_A/I requirements.
6.How does Aetrix verify that SMB10J26AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB10J26AHM3_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 SMB10J26AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMB10J26AHM3_A/I?
All SMB10J26AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J26AHM3_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 SMB10J26AHM3_A/I part is unused and in its original packaging.
Return procedure for SMB10J26AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J26AHM3_A/I Tags
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Diodes Incorporated
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