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Vishay General Semiconductor - Diodes Division SMA5J26AHE3/61
- Part No.:
- SMA5J26AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26AHE3/61.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,200
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Product details
Overview
SMA5J26AHE3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR), 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 MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J26AHE3/61 datasheet, SMA5J26AHE3/61 pinout, SMA5J26AHE3/61 application, or SMA5J26AHE3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (via HE3 suffix), 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 26 V and rapidly transitions to low-impedance conduction above VBR (min 28.9 V) to limit transient overvoltages. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns).
The device is rated for 500 W peak pulse power under standardized 10/1000 µs waveform conditions, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), enabling reliable operation in compact layouts when mounted per recommended pad dimensions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR (min/max) | 28.9 V / 31.9 V - Breakdown occurs within this range at 1 mA test current; sets minimum clamping threshold. |
| VC @ IPPM | 42.1 V at 11.9 A - Clamped voltage during 500 W surge; determines maximum stress on protected downstream circuitry. |
| PPPM | 500 W - Peak pulse power handling capability with 10/1000 µs waveform; defines surge energy absorption capacity. |
| IFSM | 40 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports inrush or fault-current events. |
| TJ max | 150 °C - Maximum allowable junction temperature; enables use in under-hood automotive and industrial environments. |
| Package | SMA (DO-214AC) - Surface-mount package with 2.54 mm lead pitch; compatible with standard reflow profiles and J-STD-020 MSL level 1. |
Pinout & Package
SMA5J26AHE3/61 uses the SMA (DO-214AC) surface-mount package: molded epoxy case with matte tin-plated leads, cathode indicated by a band on one end, and mechanical dimensions conforming to JEDEC DO-214AC standard (length 4.93 mm, width 3.99 mm, height 2.29 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point in unidirectional mode | Connected to lower-potential side (e.g., ground or return path) during normal operation; conducts during positive transients. |
| Cathode (banded end) | Reverse-biased terminal during normal operation | Connected to protected line (e.g., 24 V rail); avalanche conduction initiates here during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements. |
| Glass passivated junction | Ensures stable leakage current (<1.0 µA at VWM) and long-term reliability under thermal cycling and humidity exposure. |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving clamping precision and downstream component safety. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns; eliminates bake-out requirement prior to SMT. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in vehicle ECUs against load dump and inductive switching spikes up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC/DC converter input. Use Value: Limits transient voltage to ≤42.1 V, preventing damage to downstream regulators and microcontrollers rated for 36 V absolute max. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) in factory automation sensors exposed to ESD and field wiring surges. IC Role / Device Role / Timing Role: TVS placed across output terminals to shunt fast transients before reaching precision DAC or op-amp output stage. Use Value: Maintains signal integrity with <1.0 µA leakage at 26 V, avoiding offset errors in high-impedance current-loop receivers. |
| Telecom DC Power Input Protection | Consumer Equipment AC/DC Adapter Output Protection |
Use Scenario: Secondary-side surge suppression on +48 V telecom power feeds subject to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between PSE output and powered device input. Use Value: Absorbs 500 W pulses without degradation, meeting GR-1089-CORE Level 3 immunity requirements for central office equipment. | Use Scenario: Output overvoltage protection on wall adapters powering USB-C PD devices or smart home hubs. IC Role / Device Role / Timing Role: Clamp installed after secondary rectifier to prevent fault propagation from transformer or controller failure. Use Value: Fast <1 ns response prevents >42.1 V excursion from reaching sensitive SoCs, supporting UL 62368-1 transient withstand 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 |
|---|---|---|---|
| SMA5J26A-E3/61 | No AEC-Q101 qualification; commercial-grade only; identical electrical specs and package. | Not suitable for automotive OEM or Tier-1 applications requiring automotive qualification. | Select SMA5J26AHE3/61 when AEC-Q101 compliance is mandatory; otherwise SMA5J26A-E3/61 offers cost advantage for industrial/commercial use. |
| SMCJ26AHE3/61 | Higher 1500 W PPPM, larger SMC (DO-214AB) package, same VWM/VC ratings. | Used where higher surge margin is required (e.g., outdoor telecom cabinets), but requires PCB layout change due to larger footprint. | Choose SMCJ26AHE3/61 only if system-level testing confirms need for >500 W surge handling; SMA5J26AHE3/61 fits space-constrained designs. |
Compared with SMA5J26A-E3/61, the SMA5J26AHE3/61 adds automotive qualification without electrical trade-offs; versus SMCJ26AHE3/61, it delivers identical clamping performance in 40% smaller area, making it optimal for dense PCB layouts where 500 W surge immunity suffices.
Availability
SMA5J26AHE3/61 is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial sensor nodes, and telecom power interface circuits requiring stable component supply, AEC-Q101 compliance, and high-power-density TVS protection.
Supply support for SMA5J26AHE3/61 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered for high-energy transient suppression in space-constrained, high-reliability applications including automotive, industrial, and communications infrastructure.
FAQ
What is the clamping voltage of the SMA5J26AHE3/61 and how is it measured?
The SMA5J26AHE3/61 has a maximum clamping voltage (VC) of 42.1 V, measured at its peak pulse current (IPPM) of 11.9 A under a standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed per Vishay's datasheet and reflects the actual voltage seen by protected circuitry during worst-case transient events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is the SMA5J26AHE3/61 suitable for automotive applications?
Yes, the SMA5J26AHE3/61 is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number. It meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge robustness defined in AEC-Q101 Rev D, making it suitable for under-hood and chassis-mounted automotive systems such as body control modules and ADAS power supplies.
What does the "/61" suffix indicate in SMA5J26AHE3/61?
The "/61" suffix denotes the preferred packaging configuration: 7-inch diameter plastic tape and reel containing 1800 units. This format is optimized for high-speed pick-and-place assembly and complies with EIA-481 standards. The "61" code is distinct from "5A" (13-inch reel, 7500 units) and ensures correct feeder setup and inventory tracking.
How does the SMA5J26AHE3/61 differ from bidirectional TVS diodes like SMA5J26CA?
The SMA5J26AHE3/61 is unidirectional and functions like a Zener diode with cathode marking, conducting only during reverse overvoltage events. In contrast, SMA5J26CA is bidirectional and symmetrical, suppressing transients of either polarity - useful for AC lines or data buses. They share identical VWM, VC, and PPPM, but polarity and marking differ fundamentally.
What is the thermal resistance of the SMA5J26AHE3/61 and why does it matter?
The SMA5J26AHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead (RθJL) of 25 °C/W. These values determine how effectively heat from surge dissipation transfers to the PCB and ambient air. Proper copper pad design (0.2" × 0.2" per terminal) is essential to maintain RθJA near the specified value and avoid thermal runaway during repeated surges.
SMA5J26AHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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):
- 11.9A
- Power - Peak Pulse:
- 500W
- 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-214AC (SMA)
SMA5J26AHE3/61 FAQ
1.How can I place an order for SMA5J26AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26AHE3/61 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 SMA5J26AHE3/61 reliable?
The price and inventory of SMA5J26AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J26AHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J26AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26AHE3/61?
SMA5J26AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26AHE3/61 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 SMA5J26AHE3/61?
For technical support, including SMA5J26AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26AHE3/61 requirements.
6.How does Aetrix verify that SMA5J26AHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J26AHE3/61 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 SMA5J26AHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J26AHE3/61?
All SMA5J26AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26AHE3/61, 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 SMA5J26AHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J26AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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