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Vishay General Semiconductor - Diodes Division SMA5J26CAHE3/5A
- Part No.:
- SMA5J26CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26CAHE3/5A.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,711
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Product details
Overview
SMA5J26CAHE3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 26 V standoff voltage (VWM), 28.9–31.9 V breakdown range (VBR), 500 W peak pulse power (10/1000 µs), clamping voltage of 42.1 V at 11.9 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMA5J26CAHE3/5A datasheet, SMA5J26CAHE3/5A pinout, SMA5J26CAHE3/5A application, or SMA5J26CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on PCBs requiring robust ESD and lightning surge immunity.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage performance and fast response (<1 ns) to transients such as ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning surges (IEC 61000-4-5).
Thermal design relies on low RθJA (80 °C/W) and RθJL (25 °C/W), supported by soldering to 5.0 mm × 5.0 mm copper pads per terminal. The device sustains operation from –55 °C to +150 °C junction temperature and meets JESD201 Class 2 whisker resistance with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin in protected circuits. |
| VBR (min/max) | 28.9 V / 31.9 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold under surge conditions. |
| VC @ IPPM | 42.1 V at 11.9 A - Clamped voltage during 500 W 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 500 W - Peak pulse power handling capacity; enables protection against high-energy transients like ISO 7637-2 Pulse 1/2/5a in automotive systems. |
| IPPM | 11.9 A - Peak surge current supported at rated clamping voltage; directly relates to PCB trace sizing and layout robustness. |
| TJ max | +150 °C - Maximum junction temperature; allows reliable operation in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, UHAST, and mechanical shock testing per AEC standard. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002/JESD22-B102 solderability standards. Bidirectional devices have no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping occurs regardless of voltage polarity across the device. |
| Case (body) | Thermal and mechanical interface | No electrical connection; serves as thermal path to PCB copper; requires minimum 5.0 mm × 5.0 mm pad per terminal for rated power dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses (e.g., RS-485, CAN), and ungrounded sensor interfaces without polarity constraints. |
| 500 W peak pulse power | Supports compliance with ISO 16750-2 (automotive) and IEC 61000-4-5 (industrial) surge immunity requirements up to Level 3. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules where long-term field reliability is mandatory. |
| MSL Level 1 (260 °C peak) | Permits standard reflow soldering without baking or special handling; compatible with high-volume SMT assembly lines. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), improving protection margin for sensitive CMOS inputs. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Primary clamping element placed at board-level input filter stage to limit voltage seen by DC-DC converters and microcontrollers. Use Value: Withstands 500 W surges while clamping below 42.1 V, preventing latch-up or permanent damage to downstream 3.3 V/5 V logic. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation equipment from EFT and cable discharge events. IC Role / Device Role / Timing Role: Parallel-connected TVS at sensor connector interface to shunt fast transients before they reach precision ADC front-ends. Use Value: Sub-1 ns response and <1 µA leakage at 26 V preserve signal integrity and offset accuracy in mV-range measurements. |
| RS-485 Transceiver Protection | Automotive Lighting Control |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) in building management systems exposed to induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS across differential pair (A/B) and ground to clamp common-mode and differential-mode transients. Use Value: Symmetrical clamping ensures balanced protection without skewing differential signaling; 42.1 V clamp avoids violating transceiver's absolute maximum ratings. |
Use Scenario: Protecting LED driver ICs and MOSFET switches in adaptive headlight modules subjected to ISO 16750-2 Pulse 5a (load dump). IC Role / Device Role / Timing Role: High-power TVS placed between battery rail and driver input to absorb >100 J energy spikes. Use Value: 500 W rating and AEC-Q101 qualification ensure survival over 10-year vehicle lifetime under repeated surge stress. |
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-M3/5A | Same electrical specs and AEC-Q101 qualification; halogen-free molding compound per JEDEC J-STD-020. | Required for RoHS-compliant, halogen-free BOMs in EU/Asia-sourced automotive programs. | Select when halogen-free compliance is mandated by OEM or Tier-1 procurement policy. |
| SMCJ26CAHE3/5A | Same VWM/VC, but higher PPPM = 1500 W in larger SMC (DO-214AB) package; RθJA = 35 °C/W. | Used where higher surge energy (>500 W) or improved thermal dissipation is required, e.g., main power entry points. | Choose for enhanced ruggedness in primary board-level protection; requires larger PCB footprint and layout revision. |
Compared with SMA5J26CAHE3/5A, SMA5J26CA-M3/5A offers identical protection performance with halogen-free materials, while SMCJ26CAHE3/5A delivers triple the surge power in a larger package-enabling trade-offs between space-constrained secondary protection and high-energy primary clamping.
Availability
SMA5J26CAHE3/5A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, RS-485 communication systems, and LED lighting control requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMA5J26CAHE3/5A 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 was developed for high-density, high-reliability transient suppression in automotive and industrial environments where compact size, AEC-Q101 compliance, and consistent clamping performance are critical design requirements.
FAQ
What is the polarity configuration of SMA5J26CAHE3/5A?
SMA5J26CAHE3/5A is a bidirectional TVS diode with symmetrical anode/cathode terminals and no polarity marking on the SMA package. It clamps voltage transients equally in both directions, making it suitable for AC-coupled lines, differential buses, and ungrounded interfaces without orientation constraints during placement.
Does SMA5J26CAHE3/5A meet automotive qualification standards?
Yes, SMA5J26CAHE3/5A carries AEC-Q101 qualification, verified through stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and mechanical shock. This confirms its suitability for automotive powertrain, body electronics, and ADAS applications per industry reliability requirements.
What is the maximum clamping voltage of SMA5J26CAHE3/5A under surge conditions?
The maximum clamping voltage (VC) of SMA5J26CAHE3/5A is 42.1 V when subjected to its rated peak pulse current (IPPM) of 11.9 A using a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 500 W transient event.
Can SMA5J26CAHE3/5A be used in automated SMT assembly processes?
Yes, SMA5J26CAHE3/5A is optimized for automated surface-mount assembly: it has MSL Level 1 rating (peak reflow temperature 260 °C), matte tin-plated leads compliant with J-STD-002 and JESD22-B102, and a low-profile SMA (DO-214AC) package compatible with standard pick-and-place equipment and reflow profiles.
How does the thermal performance of SMA5J26CAHE3/5A affect PCB layout?
SMA5J26CAHE3/5A has RθJA = 80 °C/W and RθJL = 25 °C/W, requiring minimum 5.0 mm × 5.0 mm copper pads per terminal for rated 500 W pulse dissipation. Inadequate copper area increases junction temperature, derating surge capability and potentially triggering thermal runaway during repetitive transients.
SMA5J26CAHE3/5A 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)
SMA5J26CAHE3/5A FAQ
1.How can I place an order for SMA5J26CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26CAHE3/5A 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 SMA5J26CAHE3/5A reliable?
The price and inventory of SMA5J26CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J26CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J26CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26CAHE3/5A?
SMA5J26CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26CAHE3/5A 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 SMA5J26CAHE3/5A?
For technical support, including SMA5J26CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26CAHE3/5A requirements.
6.How does Aetrix verify that SMA5J26CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J26CAHE3/5A 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 SMA5J26CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J26CAHE3/5A?
All SMA5J26CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26CAHE3/5A, 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 SMA5J26CAHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J26CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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