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Vishay General Semiconductor - Diodes Division SMA5J26-E3/61
- Part No.:
- SMA5J26-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26-E3/61.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J26-E3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 26 V standoff voltage (VWM), 28.9–31.9 V breakdown voltage (VBR at 1 mA), 42.1 V clamping voltage (VC) at 11.9 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to protect automotive ECUs, industrial I/O modules, and power supply inputs against ESD and load dump transients.
For engineers reviewing the SMA5J26-E3/61 datasheet, SMA5J26-E3/61 pinout, SMA5J26-E3/61 application, or SMA5J26-E3/61 equivalent, key selection criteria include unidirectional polarity, 150 °C maximum junction temperature, RoHS-compliant matte tin-plated leads, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents <1 µA leakage at 26 V, then rapidly avalanches when transient voltage exceeds its 28.9–31.9 V breakdown range to clamp downstream circuitry at ≤42.1 V. Its glass-passivated junction ensures stable parametric performance across temperature and lifetime.
Designed for surface-mount automated assembly, SMA5J26-E3/61 uses a DO-214AC package with cathode band marking, meets UL 94 V-0 flammability, and delivers low incremental surge resistance for effective energy diversion during 8.3 ms half-sine surges up to 40 A (IFSM) and repetitive 10/1000 µs pulses up to 500 W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 26 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 28.9–31.9 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal rail. |
| VC (Clamping Voltage) | 42.1 V at 11.9 A (10/1000 µs) - Peak voltage seen by protected IC during surge; determines system overvoltage margin. |
| PPPM (Peak Pulse Power) | 500 W - Sustained surge energy handling capability per single 10/1000 µs event; enables robust front-end protection. |
| IPPM (Peak Pulse Current) | 11.9 A - Maximum non-repetitive surge current supported at rated clamping voltage; sized for ISO 7637-2 Pulse 1/2a/5a. |
| TJmax | 150 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
| Leakage (ID) | <1 µA at 26 V - Negligible standby power loss and minimal interference on sensitive analog/sensor lines. |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case with matte tin-plated leads, cathode indicated by a band on one end. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); thermal resistance RθJA = 80 °C/W (on 5.0 mm × 5.0 mm copper pads).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return; completes clamping loop during transient events. |
| Cathode | Reverse-biased terminal / Protection node | Connected to protected line (e.g., 24 V rail); avalanche conduction initiates here during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Glass-passivated junction | Ensures long-term parameter stability and resistance to humidity-induced degradation in harsh environments. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; simplifies manufacturing flow. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets safety requirements for enclosed industrial and automotive enclosures. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD, relay bounce), improving protection fidelity. |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) against ISO 7637-2 load dump pulses and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional shunt TVS diode placed between power rail and chassis ground. Use Value: Clamps transients to ≤42.1 V while dissipating 500 W, preventing damage to downstream DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers against field-wiring induced surges and inductive kickback. IC Role / Device Role / Timing Role: Front-end transient suppressor mounted directly at connector entry point. Use Value: Sub-µA leakage avoids false triggering; 11.9 A IPPM withstands repeated 10/1000 µs surges common in factory automation. |
| Telecom Power Interface | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding 24–48 V DC power feeds in telecom remote radio heads and base station backplanes from lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on bulk power entry before filtering and regulation stages. Use Value: 500 W PPPM and 150 °C TJmax support operation in sealed, high-temperature outdoor enclosures. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers connected to 24 V control boards. IC Role / Device Role / Timing Role: Clamp device across motor terminals or on driver supply rail. Use Value: Fast response time and low VC prevent latch-up or gate oxide damage in MOSFET drivers during switching transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J26AHE3/61 | AEC-Q101 qualified (same as SMA5J26-E3/61), identical electrical specs; HE3 suffix denotes whisker test class 2 vs. E3 class 1A. | Required where extended whisker reliability (JESD 201 Class 2) is mandated for long-life automotive modules. | Select SMA5J26AHE3/61 only if whisker testing beyond Class 1A is specified in your automotive OEM requirement. |
| SMCJ26A-E3/57T | Same VWM/VC, but in larger DO-214AB (SMC) package; 1500 W PPPM, higher IPPM (33.3 A), RθJA = 35 °C/W. | Better suited for higher-energy threats (e.g., ISO 16750-2 long-duration surges) where PCB space allows larger footprint. | Choose SMCJ26A-E3/57T when system-level surge testing exceeds 500 W or thermal management requires lower junction rise. |
Compared with SMA5J26-E3/61, SMA5J26AHE3/61 offers identical protection performance with enhanced whisker resistance, while SMCJ26A-E3/57T trades compact size for significantly higher surge capacity and improved thermal dissipation - enabling design flexibility across automotive, industrial, and telecom platforms.
Availability
SMA5J26-E3/61 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controller inputs, and telecom power interface designs requiring stable component supply, AEC-Q101 compliance, and RoHS-conformant sourcing.
Supply support for SMA5J26-E3/61 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 devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform engineered for high-power-density transient suppression in space-constrained automotive and industrial systems where rapid clamping and AEC-Q101 validation are mandatory.
FAQ
What is the polarity configuration of SMA5J26-E3/61?
SMA5J26-E3/61 is a unidirectional TVS diode, meaning it conducts only in reverse bias during overvoltage events. The cathode is marked by a band on the package body. This configuration provides low-leakage protection for DC power rails where polarity is fixed, unlike bi-directional variants that protect AC or dual-polarity signals. SMA5J26-E3/61 must be oriented correctly in-circuit to ensure proper clamping behavior.
Does SMA5J26-E3/61 meet automotive qualification standards?
Yes, SMA5J26-E3/61 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control, body electronics, and infotainment systems. This qualification covers stress tests for temperature cycling, humidity, mechanical shock, and surge endurance. SMA5J26-E3/61 also complies with JESD201 Class 1A whisker testing and MSL Level 1 reflow compatibility - all documented in Vishay's official specification sheet 88875.
What is the clamping voltage of SMA5J26-E3/61 at its rated peak pulse current?
The clamping voltage (VC) of SMA5J26-E3/61 is 42.1 V when subjected to its rated peak pulse current of 11.9 A using the standard 10/1000 µs waveform. This value is measured under defined test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads) and represents the maximum voltage imposed on protected circuitry during a surge event. SMA5J26-E3/61 maintains this clamping performance across its operational temperature range.
How does SMA5J26-E3/61 differ from SMA5J26AHE3/61?
SMA5J26-E3/61 and SMA5J26AHE3/61 share identical electrical specifications (VWM, VBR, VC, PPPM) and AEC-Q101 qualification, but differ in whisker test class: E3 meets JESD201 Class 1A, while HE3 meets the more stringent Class 2. Both are RoHS-compliant and use DO-214AC packaging. SMA5J26-E3/61 is intended for general automotive and industrial use; SMA5J26AHE3/61 is selected when extended whisker reliability is required for mission-critical modules.
What is the maximum operating junction temperature for SMA5J26-E3/61?
The maximum operating junction temperature (TJmax) for SMA5J26-E3/61 is +150 °C, as specified in Vishay's datasheet 88875. This rating enables reliable operation in under-hood automotive environments and enclosed industrial enclosures. Thermal design must ensure that power dissipation - especially during repetitive surge events - does not cause sustained junction temperatures to exceed this limit. SMA5J26-E3/61's RθJA of 80 °C/W assumes mounting on 5.0 mm × 5.0 mm copper pads.
SMA5J26-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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:
- 46.6V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J26-E3/61 FAQ
1.How can I place an order for SMA5J26-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26-E3/61 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 SMA5J26-E3/61 reliable?
The price and inventory of SMA5J26-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J26-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J26-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26-E3/61?
SMA5J26-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26-E3/61 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 SMA5J26-E3/61?
For technical support, including SMA5J26-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26-E3/61 requirements.
6.How does Aetrix verify that SMA5J26-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J26-E3/61 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 SMA5J26-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J26-E3/61?
All SMA5J26-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26-E3/61, 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 SMA5J26-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J26-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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