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Vishay General Semiconductor - Diodes Division SMB10J26AHE3/5B
- Part No.:
- SMB10J26AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J26AHE3/5B.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB10J26AHE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 42.1 V maximum clamping voltage (VC) at 23.8 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive ECUs, industrial sensor interfaces, and power supply input stages.
For engineers reviewing the SMB10J26AHE3/5B datasheet, SMB10J26AHE3/5B pinout, SMB10J26AHE3/5B application, or SMB10J26AHE3/5B equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), junction temperature range (–55 to +150 °C), and automotive-grade packaging details - all critical for ESD/surge protection design validation and BOM selection.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<1 µA leakage at 26 V), then rapidly avalanches below 42.1 V to divert surge energy away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance, enabling consistent clamping performance across repetitive transients.
Designed for surface-mount automated assembly, SMB10J26AHE3/5B meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 100 A non-repetitive forward surge (IFSM), and is qualified to AEC-Q101 - confirming suitability for under-hood automotive environments where thermal cycling and vibration reliability are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin for 24 V systems. |
| VBR (min/max) | 28.9 V / 31.9 V at IT = 1 mA - tight breakdown tolerance ensures predictable turn-on during transients without premature leakage. |
| VC @ IPPM | 42.1 V at 23.8 A (10/1000 µs) - clamping voltage directly limits stress on protected ICs; lower VC improves system-level surge immunity. |
| PPPM | 1000 W - peak pulse power handling capacity determines survivability against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| TJ max. | +150 °C - enables operation in high-temperature automotive engine compartments and industrial enclosures without derating. |
| RθJA | 72 °C/W - thermal resistance from junction to ambient; used with PCB copper pad layout (0.2" × 0.2") to calculate worst-case junction temperature rise. |
| AEC-Q101 | Qualified - validated for automotive applications including temperature cycling, humidity testing, and mechanical shock per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band (cathode terminal).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; completes shunt path during avalanche conduction. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 24 V supply rail); voltage clamping occurs between cathode and anode. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional configuration | Enables DC-biased protection without reverse conduction; ideal for positive-rail applications like 12/24 V automotive supplies. |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage drift over temperature and lifetime - critical for mission-critical automotive systems. |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-induced damage; eliminates pre-bake requirements in SMT lines. |
| AEC-Q101 qualification | Validates reliability for automotive use cases including engine control, body electronics, and ADAS sensor modules. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients (e.g., load dump), improving clamping fidelity and downstream IC safety margin. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between power rail and ground, activated within nanoseconds of overvoltage onset. Use Value: Limits clamped voltage to ≤42.1 V during 1000 W surges, preventing damage to MCU power pins and CAN transceivers. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital I/O of PLC analog input modules from field wiring transients. IC Role / Device Role / Timing Role: Bidirectional-capable protection device (configured unidirectionally here) guarding signal integrity at sensor interface nodes. Use Value: Withstands >23 A peak surge while maintaining <1 µA leakage at 26 V, preserving measurement accuracy and system uptime. |
| DC-DC Converter Input Stage | Telecom Power Supply Surge Clamping |
|
Use Scenario: Input protection for isolated 24 V-to-5 V buck converters in industrial gateways exposed to conducted EFT and surge noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of input filter and converter IC, absorbing energy before filtering stage saturation. Use Value: 1000 W PPPM rating handles repeated 10/1000 µs surges without degradation; RθJA = 72 °C/W allows thermal design with minimal copper area. |
Use Scenario: Secondary-side 26 V rail protection in telecom power shelves subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Fast-response TVS placed at point-of-load to suppress residual transients passing through primary-stage isolation. Use Value: 42.1 V clamping voltage ensures protected ASICs remain below absolute maximum ratings even during worst-case 2 kV surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26AHE3/5B | Same VWM (26 V), identical SMB package, but rated for 600 W PPPM (vs. 1000 W); lower IPPM (15.5 A vs. 23.8 A). | Not suitable for high-energy surges like automotive load dump; limited to lower-tier IEC 61000-4-5 test levels. | Select SMB10J26AHE3/5B when 1000 W surge immunity is required; choose SMBJ26AHE3/5B only for cost-sensitive, low-energy applications. |
| 1.5SMC26AH | Same VWM and clamping (42.1 V), but in larger SMC (DO-214AB) package; higher thermal mass yields RθJA ≈ 35 °C/W. | Better thermal performance but requires larger PCB footprint; not drop-in compatible due to different pad layout and dimensions. | Prefer SMB10J26AHE3/5B for space-constrained automotive modules; use 1.5SMC26AH only when board area permits and lower thermal resistance is critical. |
Compared with SMBJ26AHE3/5B and 1.5SMC26AH, SMB10J26AHE3/5B uniquely balances high 1000 W surge capability, AEC-Q101 qualification, and compact SMB footprint - making it optimal for next-generation automotive and industrial edge devices where power density and reliability are co-prioritized.
Availability
SMB10J26AHE3/5B is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor interface protection, and telecom power supply surge clamping requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMB10J26AHE3/5B 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 SMB10JxxA series belongs to Vishay's high-power-density TRANSZORB® TVS family, engineered specifically for automotive and industrial applications demanding AEC-Q101 compliance, high surge robustness, and compact surface-mount form factors.
FAQ
What is the maximum clamping voltage of SMB10J26AHE3/5B at its rated peak pulse current?
The SMB10J26AHE3/5B has a maximum clamping voltage (VC) of 42.1 V at its specified peak pulse current (IPPM) of 23.8 A, measured using the standard 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is confirmed in Vishay's Document Number 88422, page 2. The SMB10J26AHE3/5B maintains this clamping performance across its operational temperature range.
Is SMB10J26AHE3/5B qualified for automotive applications?
Yes, SMB10J26AHE3/5B is explicitly AEC-Q101 qualified, as stated in the Vishay datasheet (Document Number 88422, page 1). The "HE3" suffix denotes RoHS-compliant and AEC-Q101-qualified construction, validating its reliability for automotive use cases including engine control, body electronics, and ADAS sensor modules. This qualification covers temperature cycling, humidity resistance, and mechanical shock testing per the AEC standard.
What is the thermal resistance junction-to-ambient (RθJA) for SMB10J26AHE3/5B?
The typical thermal resistance junction-to-ambient (RθJA) for SMB10J26AHE3/5B is 72 °C/W, measured under standard conditions with 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal (Vishay Document Number 88422, page 4). This value is essential for calculating junction temperature rise during sustained surge events or elevated ambient conditions, especially in enclosed automotive or industrial enclosures.
Does SMB10J26AHE3/5B have polarity marking, and how is it identified?
Yes, SMB10J26AHE3/5B is a unidirectional TVS diode with polarity clearly marked: a cathode band is printed on the device body adjacent to the cathode terminal. As shown in the package outline diagram (page 5 of Vishay Document Number 88422), the banded end corresponds to the cathode, which connects to the line being protected, while the unbanded end is the anode, tied to ground. No marking is present on bidirectional variants - but SMB10J26AHE3/5B is unidirectional.
What is the peak pulse power rating (PPPM) of SMB10J26AHE3/5B and under what test condition?
The SMB10J26AHE3/5B has a peak pulse power rating (PPPM) of 1000 W, tested using the standardized 10/1000 µs double-exponential current waveform per ANSI/IEEE C62.35 (Vishay Document Number 88422, page 2). This rating applies at TA = 25 °C and assumes proper PCB mounting on 0.2" × 0.2" copper pads. Derating is required above 25 °C, per Figure 2 in the same datasheet.
SMB10J26AHE3/5B 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J26AHE3/5B FAQ
1.How can I place an order for SMB10J26AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J26AHE3/5B 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 SMB10J26AHE3/5B reliable?
The price and inventory of SMB10J26AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J26AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J26AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J26AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J26AHE3/5B?
SMB10J26AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J26AHE3/5B 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 SMB10J26AHE3/5B?
For technical support, including SMB10J26AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J26AHE3/5B requirements.
6.How does Aetrix verify that SMB10J26AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J26AHE3/5B 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 SMB10J26AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J26AHE3/5B?
All SMB10J26AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J26AHE3/5B, 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 SMB10J26AHE3/5B part is unused and in its original packaging.
Return procedure for SMB10J26AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J26AHE3/5B Tags
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