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Vishay General Semiconductor - Diodes Division SMB10J26AHE3_A/I
- Part No.:
- SMB10J26AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J26AHE3_A/I.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB10J26AHE3_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), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 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 - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMB10J26AHE3_A/I datasheet, SMB10J26AHE3_A/I pinout, SMB10J26AHE3_A/I application, or SMB10J26AHE3_A/I equivalent, this device is selected for AEC-Q101-qualified 24 V system protection where low clamping ratio, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical design requirements.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping protector: under normal conditions it presents <1 µA leakage at 26 V; during transients exceeding VBR, it avalanches to clamp voltage ≤42.1 V while absorbing up to 1000 W for 10/1000 µs pulses. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for surface-mount automated assembly, SMB10J26AHE3_A/I meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 150 °C max junction temperature, and delivers 72 °C/W junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm copper pads - enabling robust thermal performance in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC rail margin for 24 V systems. |
| VBR min/max | 28.9 V / 31.9 V at 1 mA - tight breakdown tolerance ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 42.1 V at 23.8 A - clamping voltage limits downstream IC stress during ISO 7637-2 Pulse 1/2a/5a surges. |
| PPPM | 1000 W (10/1000 µs) - sustains high-energy transients without failure; enables single-device protection for CAN/LIN bus power domains. |
| IFSM | 100 A (8.3 ms half-sine) - withstands repetitive load-dump events common in automotive alternator circuits. |
| TJ max | +150 °C - supports operation in under-hood environments and industrial enclosures without derating. |
| Package | SMB (DO-214AA) - 3.94 mm × 2.20 mm footprint; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
Two-terminal unidirectional TVS diode in SMB (DO-214AA) package. Cathode marked by black band; anode and cathode terminals are symmetrical for board-level mounting. Package dimensions: 3.94 mm × 2.20 mm × 2.30 mm (L × W × H); lead finish: matte tin, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry during forward conduction; connected to protected line ground or low-side return path | Provides low-impedance path to ground when clamping; must be routed with minimal inductance to maintain sub-ns response. |
| Cathode (banded end) | Current exit during avalanche clamping; connected to protected line (e.g., 24 V rail or signal trace) | Defines polarity-sensitive placement; reversal causes permanent short-circuit under normal bias - verified via optical marking. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics - eliminates qualification overhead for Tier 1 suppliers. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure - critical for 15-year vehicle service life. |
| MSL Level 1 rating | Supports single-pass 260 °C reflow without popcorn effect or parameter shift - reduces manufacturing yield loss in high-volume SMT lines. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on downstream MOSFETs and microcontrollers - improves system-level ESD and surge immunity margin. |
| 1000 W peak pulse power | Enables single-device protection against ISO 16750-2 Load Dump (up to 35 V, 100 ms) and IEC 61000-4-5 Combination Wave (4 kV, 2 Ω source). |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply input of an automotive ADAS camera module against load dump and jump-start surges. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed upstream of DC/DC converter input to limit transient voltage to ≤42.1 V. Use Value: Prevents damage to buck controller ICs rated for 45 V absolute maximum, extending field reliability beyond ISO 16750-2 Class D requirements. |
Use Scenario: Safeguarding analog output (4–20 mA) line of a pressure sensor in factory automation PLC I/O module. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (cathode tied to signal, anode to shield) clamps EFT bursts on field wiring. Use Value: Maintains signal integrity below 100 mV error band during 4 kV/5 kHz EFT testing per IEC 61000-4-4, avoiding false trip events. |
| Telecom DC Power Feeding | Consumer USB-C Power Delivery Rail |
Use Scenario: Surge suppression on -48 V DC feeding line for remote radio head in 5G base station equipment. IC Role / Device Role / Timing Role: Unidirectional TVS referenced to chassis ground, clamping negative-going transients induced by lightning-induced coupling. Use Value: Withstands 1000 W pulses without degradation, meeting Telcordia GR-1089-CORE Zone 3 immunity requirements. |
Use Scenario: Overvoltage protection on VBUS line of USB-C port in portable medical monitor with external AC adapter input. IC Role / Device Role / Timing Role: Fast-response TVS placed between VBUS and GND to clamp adapter OVP events and hot-plug spikes. Use Value: Clamps to 42.1 V within <1 ns, preventing latch-up in USB PD controller ICs rated for 36 V max input. |
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), identical SMB package, but lower PPPM (600 W) and higher VC (42.4 V at 17.3 A) | Rated for lighter-duty consumer applications; not validated to AEC-Q101 | Select when cost sensitivity outweighs automotive qualification and 1000 W surge margin. |
| 1.5SMC27AHE3_A/I | Higher VWM (27 V), same 1000 W PPPM, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm) | Requires PCB area increase (~3× footprint); better thermal dissipation for sustained surge duty cycles | Choose when thermal management dominates layout constraints and 26 V vs. 27 V VWM tolerance is acceptable. |
Compared with SMBJ26AHE3_A/I, SMB10J26AHE3_A/I delivers +67 % peak power handling and automotive qualification; versus 1.5SMC27AHE3_A/I, it saves >70 % board space while maintaining full 1000 W capability - making it optimal for space-constrained AEC-Q101 designs.
Availability
SMB10J26AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power feeds, and USB-C PD systems requiring stable component supply with guaranteed AEC-Q101 compliance and full traceability.
Supply support for SMB10J26AHE3_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, and protection devices with emphasis on reliability, automotive qualification, and high-power density packaging.
The SMB10J series is engineered for high-energy transient suppression in harsh environments - targeting automotive power distribution, industrial control I/O, and infrastructure power systems where AEC-Q101 validation and 1000 W surge capacity are mandatory.
FAQ
What is the maximum clamping voltage of SMB10J26AHE3_A/I at its rated peak pulse current?
The SMB10J26AHE3_A/I has a maximum clamping voltage (VC) of 42.1 V at its rated peak pulse current (IPPM) of 23.8 A, measured under the standardized 10/1000 µs double-exponential waveform. This value is specified in the Vishay datasheet Document Number 88422, page 2, and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMB10J26AHE3_A/I maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMB10J26AHE3_A/I suitable for automotive applications?
Yes, SMB10J26AHE3_A/I is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 09-Jan-2024, section "FEATURES" and "ORDERING INFORMATION". Its HE3 suffix denotes RoHS-compliant and AEC-Q101-qualified construction, and it is rated for operation from -55 °C to +150 °C junction temperature - meeting requirements for engine bay, powertrain, and ADAS modules. The SMB10J26AHE3_A/I undergoes stress testing per AEC-Q101 including HTGB, HTRB, and temperature cycling.
What is the standoff voltage (VWM) and why is it critical for SMB10J26AHE3_A/I selection?
The standoff voltage (VWM) of SMB10J26AHE3_A/I is 26 V - the maximum DC or continuous reverse voltage the device can block without exceeding 1 µA leakage current. This parameter is critical because it must exceed the nominal system voltage (e.g., 24 V automotive rail) with sufficient margin to avoid false triggering during normal operation, while remaining low enough to ensure timely clamping during overvoltage events. Selecting SMB10J26AHE3_A/I for a 24 V system provides 2 V margin, aligning with industry best practices for reliable transient suppression.
Does SMB10J26AHE3_A/I have a defined polarity, and how is it identified on the package?
Yes, SMB10J26AHE3_A/I is a unidirectional TVS diode with defined polarity: the cathode is marked by a distinct black band on the SMB (DO-214AA) package body. The banded end connects to the protected line (e.g., 24 V rail), while the unmarked end connects to ground. Incorrect orientation results in forward conduction under normal bias - causing catastrophic short-circuit failure. Polarity verification is required during PCB layout and AOI inspection, and is documented in the Vishay mechanical drawing on page 5 of datasheet 88422.
What is the thermal resistance and how does it impact SMB10J26AHE3_A/I layout?
The SMB10J26AHE3_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 the Thermal Characteristics table (page 3). This value directly impacts PCB layout: reducing pad size or omitting thermal vias increases RθJA, raising junction temperature during repeated surges and risking parametric shift or failure. For high-duty-cycle applications, designers must follow Vishay's recommended pad layout to maintain the 72 °C/W rating and ensure SMB10J26AHE3_A/I reliability.
SMB10J26AHE3_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:
- -
- 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_A/I FAQ
1.How can I place an order for SMB10J26AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J26AHE3_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 SMB10J26AHE3_A/I reliable?
The price and inventory of SMB10J26AHE3_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 SMB10J26AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMB10J26AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J26AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J26AHE3_A/I?
SMB10J26AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J26AHE3_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 SMB10J26AHE3_A/I?
For technical support, including SMB10J26AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J26AHE3_A/I requirements.
6.How does Aetrix verify that SMB10J26AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB10J26AHE3_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 SMB10J26AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMB10J26AHE3_A/I?
All SMB10J26AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J26AHE3_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 SMB10J26AHE3_A/I part is unused and in its original packaging.
Return procedure for SMB10J26AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J26AHE3_A/I Tags
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