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Vishay General Semiconductor - Diodes Division SMA5J26CAHE3/61
- Part No.:
- SMA5J26CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26CAHE3/61.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,534
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Product details
Overview
SMA5J26CAHE3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection. 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 (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect automotive sensor signal lines, industrial I/O ports, and power supply rails against ESD and load dump transients.
For engineers reviewing the SMA5J26CAHE3/61 datasheet, SMA5J26CAHE3/61 pinout, SMA5J26CAHE3/61 application, or SMA5J26CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C junction temperature rating, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with clamping action triggered when reverse or forward voltage exceeds VBR. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ps), enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
Thermal performance is defined by RθJA = 80 °C/W and RθJL = 25 °C/W, supporting reliable operation up to TJ = 150 °C. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101, confirming suitability for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 28.9 V / 31.9 V at 1 mA - guaranteed breakdown threshold range for bidirectional conduction |
| VC @ IPPM | 42.1 V at 11.9 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 500 W - peak surge power handling capacity under standardized transient waveform |
| ID @ VWM | ≤1.0 µA - ultra-low leakage ensures minimal standby power loss in battery-powered systems |
| TJ max. | +150 °C - enables deployment in high-temperature automotive and industrial enclosures |
| Package | SMA (DO-214AC) - surface-mount outline with 5.0 mm × 5.0 mm thermal pad footprint |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, 260 °C reflow compatible. Bidirectional construction has no polarity marking - both terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band marking |
| Case (body) | Thermal interface | Plastic body transfers heat to PCB copper pads; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control units and ADAS sensor interfaces |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| Low Rsurge | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| Automated placement compatibility | Standardized SMA footprint supports high-speed pick-and-place with J-STD-002 solderability |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting voltage excursions to <42.1 V during 500 W surges. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V signal chain ICs while maintaining signal integrity during normal operation. | Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges (IEC 61000-4-4/5). IC Role / Device Role / Timing Role: Fast-response shunt element diverting >11 A transient current away from optocoupler inputs and microcontroller GPIOs. Use Value: Eliminates need for external series impedance or RC filtering, reducing BOM count and board space. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY front-ends and DSL line drivers against lightning-induced common-mode surges on twisted-pair cables. IC Role / Device Role / Timing Role: Symmetrical clamping device placed across differential pair or between line and chassis ground. Use Value: Maintains signal symmetry and insertion loss below 0.1 dB up to 100 MHz due to low junction capacitance (~100 pF at 0 V). | Use Scenario: Secondary-side overvoltage protection in AC/DC adapters for smart home devices subjected to mains-borne transients. IC Role / Device Role / Timing Role: Standoff-rated protector placed after rectifier and bulk capacitor to absorb residual switching spikes. Use Value: Extends lifespan of downstream DC-DC converters by limiting transient energy reaching their input pins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J26CA-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification | No functional difference; selected where halogen-free material compliance is mandated | Choose SMA5J26CA-M3/61 when environmental compliance requires halogen-free molding compound |
| SMCJ26CAHE3/61 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package with higher thermal mass (RθJA = 35 °C/W) | Better suited for higher average power dissipation or sustained surge duty cycles | Choose SMCJ26CAHE3/61 when board layout allows larger footprint and thermal management demands lower junction rise |
Compared with SMA5J26CAHE3/61, the SMA5J26CA-M3/61 offers identical protection performance with halogen-free materials, while the SMCJ26CAHE3/61 provides superior thermal derating in high-duty-cycle surge environments - neither is pin-compatible due to different package outlines (SMA vs. SMC), requiring PCB redesign.
Availability
SMA5J26CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line drivers, and consumer power adapter designs requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMA5J26CAHE3/61 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, power density, and automotive-grade qualification.
The SMA5JxxCA family is engineered for high-power-density transient suppression in space-constrained automotive and industrial applications, delivering 500 W surge capability in the compact SMA package while meeting AEC-Q101 stress test requirements.
FAQ
What is the clamping voltage of the SMA5J26CAHE3/61 under a 10/1000 µs surge?
The SMA5J26CAHE3/61 has a maximum clamping voltage (VC) of 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 at the device terminals under specified test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J26CAHE3/61 maintains this clamping performance bidirectionally.
Is the SMA5J26CAHE3/61 suitable for automotive applications?
Yes, the SMA5J26CAHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101 qualified construction. It operates reliably from -55 °C to +150 °C, withstands mechanical shock and vibration per AEC standards, and is commonly deployed in engine control units, body electronics, and ADAS sensor interfaces. The SMA5J26CAHE3/61 meets stringent automotive surge immunity requirements including ISO 7637-2 and ISO 16750-2.
Does the SMA5J26CAHE3/61 have polarity markings?
No, the SMA5J26CAHE3/61 does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SMA5J26A), the SMA5J26CAHE3/61 features symmetrical breakdown characteristics in both directions and lacks a cathode band or other polarity indicator. Both terminals are electrically identical, simplifying layout and eliminating orientation errors during automated assembly of the SMA5J26CAHE3/61.
What is the maximum leakage current of the SMA5J26CAHE3/61 at its standoff voltage?
The SMA5J26CAHE3/61 exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its 26 V standoff voltage (VWM) and tested at TA = 25 °C. This ultra-low leakage ensures minimal power drain in always-on systems such as automotive wake-up circuits or battery-backed industrial sensors. The SMA5J26CAHE3/61 maintains this specification across its full operating temperature range, with leakage increasing predictably per datasheet derating curves.
How does the thermal resistance of the SMA5J26CAHE3/61 affect its surge handling capability?
The SMA5J26CAHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. This value directly limits its ability to dissipate repeated surges: higher ambient temperatures or reduced copper area increase junction temperature rise, requiring derating of peak pulse power per Figure 2 in the datasheet. Proper PCB layout is essential to sustain the full 500 W rating of the SMA5J26CAHE3/61.
SMA5J26CAHE3/61 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMA5J26CAHE3/61 FAQ
1.How can I place an order for SMA5J26CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26CAHE3/61 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 SMA5J26CAHE3/61 reliable?
The price and inventory of SMA5J26CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J26CAHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J26CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26CAHE3/61?
SMA5J26CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26CAHE3/61 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 SMA5J26CAHE3/61?
For technical support, including SMA5J26CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26CAHE3/61 requirements.
6.How does Aetrix verify that SMA5J26CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J26CAHE3/61 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 SMA5J26CAHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J26CAHE3/61?
All SMA5J26CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26CAHE3/61, 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 SMA5J26CAHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J26CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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