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Vishay General Semiconductor - Diodes Division SMB10J26AHM3/H
- Part No.:
- SMB10J26AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J26AHM3/H.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,945
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Product details
Overview
SMB10J26AHM3/H 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 (VC) at 23.8 A peak pulse current (IPPM), and 1000 W peak pulse power (10/1000 µs waveform), making it suitable for automotive power line and industrial sensor interface protection.
For engineers reviewing the SMB10J26AHM3/H datasheet, SMB10J26AHM3/H pinout, SMB10J26AHM3/H application, or SMB10J26AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction (HM3 suffix), low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1 ps) and stable breakdown behavior under repetitive transients. Its unidirectional polarity enables asymmetric clamping-blocking reverse conduction while clamping positive surges above VBR = 28.9–31.9 V (tested at 1 mA).
The device operates across -55 °C to +150 °C junction temperature range and exhibits 72 °C/W typical junction-to-ambient thermal resistance. Its MSL Level 1 rating (JEDEC J-STD-020) and matte tin-plated leads ensure robust reflow solderability without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC bias margin. |
| VBR min/max | 28.9 V / 31.9 V - Breakdown occurs within this range at 1 mA test current; ensures predictable clamping onset. |
| VC @ IPPM | 42.1 V - Clamped voltage during 10/1000 µs 23.8 A surge; determines protected circuit's maximum overvoltage exposure. |
| PPPM | 1000 W - Peak pulse power handling capability; supports high-energy transients like ISO 7637-2 Pulse 5a. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); validates robustness against load dump events. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per stress requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Mounting requires 5.0 mm × 5.0 mm copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to protected circuit ground or low-side reference; carries full surge current during clamping. |
| Cathode | Reverse-biased terminal / clamping node | Connected to protected line (e.g., 24 V rail); conducts when transient exceeds VWM, shunting energy to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements-enables use in engine control, body modules, and ADAS sensors. |
| Halogen-free & RoHS-compliant (HM3) | Meets automotive environmental standards and eliminates corrosive halogen emissions during board assembly or end-of-life recycling. |
| Low profile SMB package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment without height interference. |
| Glass passivated junction | Provides stable, repeatable breakdown characteristics and long-term reliability under thermal cycling and humidity exposure. |
| MSL Level 1 (260 °C peak) | Eliminates pre-bake requirement prior to reflow soldering-reduces manufacturing cost and process complexity. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) against load dump and inductive switching transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local regulator input to clamp surges before they reach downstream LDOs or microcontrollers. Use Value: Limits transient voltage to ≤42.1 V during 1000 W pulses, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure or temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected between signal line and ground to absorb ESD (IEC 61000-4-2) and burst noise (IEC 61000-4-4) without affecting DC accuracy. Use Value: Maintains <1 µA leakage at 26 V, preserving sensor offset error and enabling sub-µA standby current compliance. |
| Telecom DC Feeder Protection | Consumer Power Adapter Input |
|
Use Scenario: Safeguarding PoE-powered devices (e.g., IP cameras) against lightning-induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converter, sized to handle 10/1000 µs surges up to 23.8 A. Use Value: Achieves 42.1 V clamping at rated surge current-well below 60 V absolute maximum ratings of common 48 V buck controllers. |
Use Scenario: Input-stage surge suppression in wall-mounted AC/DC adapters for smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Unidirectional TVS on secondary-side 12 V output to prevent transient coupling into USB or Ethernet PHYs. Use Value: Halogen-free HM3 construction satisfies regional eco-regulations (e.g., China RoHS II), while 1000 W rating covers EN 61000-4-5 Level 3. |
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 | Same VWM/VC/PPPM, but RoHS-compliant commercial grade (E3), not AEC-Q101 qualified or halogen-free. | Lacks automotive qualification and halogen-free certification-suitable only for non-automotive industrial or consumer use. | Select when AEC-Q101 and halogen-free requirements are not mandated; lower cost alternative for non-automotive BOMs. |
| SMCJ26A-Q | Higher PPPM = 1500 W, larger SMC (DO-214AB) package, same VWM/VC specs, AEC-Q101 qualified. | Requires larger PCB footprint (7.11 mm × 6.22 mm) and higher thermal mass; better for >1000 W surge margins. | Choose when system-level surge testing exceeds 1000 W or when enhanced thermal derating headroom is required. |
Compared with SMBJ26AHE3/A, SMB10J26AHM3/H adds AEC-Q101 qualification and halogen-free compliance without sacrificing clamping performance; versus SMCJ26A-Q, it trades 500 W peak power for 30% smaller PCB area and identical automotive suitability.
Availability
SMB10J26AHM3/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power feeders, and consumer power adapter designs requiring stable component supply with guaranteed lifecycle continuity.
Supply support for SMB10J26AHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB10J26AHM3/H at its rated peak pulse current?
The SMB10J26AHM3/H has a maximum clamping voltage (VC) of 42.1 V when subjected to its rated 10/1000 µs peak pulse current of 23.8 A. This value is measured under standardized test conditions and defines the upper voltage limit imposed on the protected circuit during surge events. The SMB10J26AHM3/H maintains this clamping performance across its full operating temperature range and after repeated surge exposures, as validated in Vishay's AEC-Q101 qualification testing.
Is SMB10J26AHM3/H suitable for automotive applications?
Yes, SMB10J26AHM3/H is explicitly AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials (HM3 suffix), meeting automotive reliability and environmental requirements. It is rated for operation from -55 °C to +150 °C and validated for load dump, ESD, and surge immunity per ISO 7637-2 and IEC 61000-4-x standards. The SMB10J26AHM3/H is commonly deployed in engine control modules, body control units, and ADAS sensor interfaces where robust transient protection is mission-critical.
How does the HM3 suffix differ from E3 or M3 in the SMB10J26A family?
The HM3 suffix on SMB10J26AHM3/H indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification-distinguishing it from E3 (RoHS-compliant commercial grade) and M3 (halogen-free RoHS-compliant commercial grade). Only HM3 and HE3 variants carry automotive qualification. The SMB10J26AHM3/H therefore delivers the full combination of environmental compliance, reliability validation, and automotive-grade traceability required for Tier 1 supplier BOMs, whereas E3/M3 parts lack the stress-test documentation needed for automotive PPAP submission.
What is the recommended PCB pad layout for SMB10J26AHM3/H?
Vishay specifies a minimum 5.0 mm × 5.0 mm copper pad area for each terminal of SMB10J26AHM3/H to achieve rated 1000 W peak pulse power dissipation. The SMB (DO-214AA) package requires symmetric thermal relief and adherence to the outlined mounting dimensions: 0.220" (5.59 mm) overall length with 0.086" (2.18 mm) minimum cathode-band-end pad width. Deviating from this layout reduces surge current handling and may cause premature failure under repeated transients. The SMB10J26AHM3/H datasheet provides exact mechanical drawings and thermal derating curves based on this pad configuration.
Does SMB10J26AHM3/H have polarity marking, and how is it identified?
Yes, SMB10J26AHM3/H is a unidirectional TVS diode and features a visible cathode band (dark stripe) on the SMB package body, located at the cathode terminal end. This marking aligns with JEDEC DO-214AA standard orientation and must be matched to PCB silkscreen polarity indicators during layout. Incorrect orientation-placing the cathode toward ground instead of the protected line-will render the SMB10J26AHM3/H ineffective for positive-going transients and may cause catastrophic failure under reverse bias. Always verify placement using optical inspection or AOI before reflow.
SMB10J26AHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for SMB10J26AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J26AHM3/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/H reliable?
The price and inventory of SMB10J26AHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMB10J26AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J26AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J26AHM3/H?
SMB10J26AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J26AHM3/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/H?
For technical support, including SMB10J26AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J26AHM3/H requirements.
6.How does Aetrix verify that SMB10J26AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMB10J26AHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMB10J26AHM3/H?
All SMB10J26AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J26AHM3/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/H part is unused and in its original packaging.
Return procedure for SMB10J26AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J26AHM3/H Tags
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