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Vishay General Semiconductor - Diodes Division SA26CAHE3/54
- Part No.:
- SA26CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA26CAHE3/54.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,696
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Product details
Overview
SA26CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 500 W peak pulse power (10/1000 μs), 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR at 1 mA), 42.1 V maximum clamping voltage (VC) at 11.9 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA26CAHE3/54 datasheet, SA26CAHE3/54 pinout, SA26CAHE3/54 application, or SA26CAHE3/54 equivalent, this page delivers verified electrical specs, package dimensions, clamping behavior under surge, automotive-grade reliability data, and real-world protection use cases - all aligned to Vishay's 88378 document revision 27-Sep-2021.
Technical Context
The SA26CAHE3/54 operates as a symmetrical, bidirectional avalanche diode with glass-passivated junction, enabling identical clamping in both polarities. Its 10/1000 μs waveform response supports repetitive transient suppression up to 0.01% duty cycle, and its low incremental surge resistance ensures stable clamping during fast-rising ESD or inductive-switching events.
Thermal design is enabled by a 175 °C max junction temperature and 3.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C. The device meets JESD 201 Class 2 whisker testing (HE3 suffix) and UL 94 V-0 flammability requirements via molded epoxy encapsulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 28.9 V / 31.9 V at IT = 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 42.1 V at 11.9 A - Clamped voltage under 500 W 10/1000 μs surge; directly limits stress on downstream ICs or MOSFETs. |
| PPPM | 500 W - Peak pulse power handling capability; validates robustness against lightning-induced surges or load dump transients. |
| TJ max | 175 °C - Maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Certified for automotive electronics per stress test standard; enables use in ADAS, body control, and infotainment systems. |
| Package | DO-15 (DO-204AC) - Industry-standard axial-leaded package with 0.242–0.258 inch body length; compatible with legacy through-hole assembly and wave soldering. |
Pinout & Package
DO-15 (DO-204AC) package: axial-leaded, cylindrical epoxy-molded case, matte tin-plated leads, no polarity marking (bidirectional). Lead length ≥ 1.0 inch (25.4 mm), body diameter 0.130–0.138 inch (3.3–3.5 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts during negative-going transients; forms symmetrical clamping path with cathode. |
| Cathode | Transient current entry (positive polarity) | Conducts during positive-going transients; enables bidirectional protection without external polarity management. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| 500 W 10/1000 μs pulse rating | Validates immunity to IEC 61000-4-5 Level 4 surges (4 kV line-to-line) in industrial and automotive interfaces. |
| AEC-Q101 qualification (HE3 suffix) | Confirms suitability for automotive applications including engine control units and battery management systems. |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for enclosed electronic assemblies in consumer and telecom equipment. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under high-temperature/humidity bias, critical for long-life automotive modules. |
Applications
| Automotive Body Control Module | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN and CAN signal lines from load-dump and jump-start induced transients in door modules and lighting controllers. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential bus lines or between signal and ground. Use Value: Limits voltage excursions to ≤42.1 V during 11.9 A surges, preserving transceiver integrity without adding series impedance or latency. | Use Scenario: Safeguarding RS-485/CAN transceivers connected to factory-floor machinery subject to inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bus lines, positioned adjacent to connector entry points. Use Value: Responds in <1 ns to suppress 10/1000 μs transients, preventing latch-up or permanent damage to isolated interface ICs. |
| Consumer Appliance Motor Drive | Telecom Power Input Stage |
Use Scenario: Shielding microcontroller GPIOs and gate drivers from back-EMF spikes generated by brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Localized TVS at motor driver output stage, shunting energy to ground before reaching logic-level components. Use Value: Withstands 70 A non-repetitive forward surge (unidirectional variant reference), ensuring survival of repeated motor commutation events. | Use Scenario: Front-end protection on 24 V or 48 V telecom power inputs exposed to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: First-stage clamping device upstream of DC-DC converters and PMICs. Use Value: Delivers 500 W pulse handling with 26 V VWM, allowing clean regulation while blocking >42 V transients from entering sensitive power management ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26CA | DO-214AC (SMA) package, 400 W PPPM, same VWM/VC specs but lower surge rating. | Suitable for space-constrained PCBs where surface-mount is mandatory; not qualified to AEC-Q101. | Select SMAJ26CA only when board area is limited and automotive qualification is not required. |
| 1.5KE27CA | DO-201AD package, 1500 W PPPM, higher VBR (29.9–33.1 V), larger footprint and higher leakage. | Better for high-energy utility or telecom surge protection; over-spec'd for automotive signal-line use. | Choose 1.5KE27CA when system-level surge tests exceed IEC 61000-4-5 Level 4 or require >1 kA peak current handling. |
Compared with SMAJ26CA and 1.5KE27CA, the SA26CAHE3/54 uniquely balances AEC-Q101 compliance, DO-15 through-hole manufacturability, and precise 26 V clamping window - making it optimal for cost-sensitive, high-volume automotive and industrial control designs requiring proven reliability and legacy assembly compatibility.
Availability
SA26CAHE3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial fieldbus interfaces, appliance motor control circuits, and telecom power input stages requiring stable component supply and long-term lifecycle support.
Supply support for SA26CAHE3/54 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 passive components with emphasis on reliability, efficiency, and application-specific performance.
The SAxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, bidirectional transient suppression in automotive, industrial, and communications infrastructure where failure modes must be mitigated without compromising signal integrity.
FAQ
What is the clamping voltage of SA26CAHE3/54 under maximum rated surge current?
The SA26CAHE3/54 exhibits a maximum clamping voltage (VC) of 42.1 V when subjected to its peak pulse current (IPPM) of 11.9 A, measured using the standardized 10/1000 μs waveform. This value is confirmed in Vishay's Document Number 88378, Table on page 2. Maintaining VC below 43 V ensures safe operation for 3.3 V and 5 V logic interfaces downstream of the SA26CAHE3/54.
Is SA26CAHE3/54 suitable for automotive applications?
Yes, SA26CAHE3/54 is AEC-Q101 qualified (HE3 suffix), explicitly certified for automotive use per Vishay's documentation. Its construction - including glass-passivated junction, JESD 201 Class 2 whisker resistance, and UL 94 V-0 molding - meets stringent requirements for under-hood and cabin electronics. The SA26CAHE3/54 is deployed in body control modules, sensor interfaces, and infotainment power rails where reliability under thermal and mechanical stress is mandatory.
How does the bidirectional nature of SA26CAHE3/54 affect its circuit placement?
The SA26CAHE3/54 has no polarity marking and conducts identically in both directions, allowing direct placement across any two nodes requiring symmetrical overvoltage protection - such as between CAN_H/CAN_L, AC mains inputs, or unbalanced analog signal pairs. Unlike unidirectional TVS diodes, the SA26CAHE3/54 eliminates orientation errors during assembly and avoids the need for dual-diode configurations, simplifying layout and reducing BOM count.
What is the standoff voltage (VWM) of SA26CAHE3/54, and why does it matter?
The standoff voltage (VWM) of SA26CAHE3/54 is 26 V - the maximum continuous reverse voltage the device tolerates without significant leakage or clamping action. This parameter ensures the SA26CAHE3/54 remains non-conductive during normal operation of a 24 V automotive or industrial system, preventing power loss or false triggering. Exceeding VWM risks premature conduction and accelerated degradation, so proper margining (e.g., ≥15% above nominal rail) is essential in SA26CAHE3/54 designs.
Can SA26CAHE3/54 be used in place of a unidirectional TVS like SA26AHE3/54?
No - SA26CAHE3/54 is strictly bidirectional and lacks anode/cathode differentiation, whereas SA26AHE3/54 is unidirectional with a defined cathode band and forward conduction path. Substituting SA26CAHE3/54 for SA26AHE3/54 in DC-biased circuits (e.g., 24 V supply rail to ground) may result in unintended forward conduction and short-circuit behavior. Always verify polarity requirements and consult Vishay's 88378 datasheet before interchanging SA26CAHE3/54 and unidirectional variants.
SA26CAHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA26CAHE3/54 FAQ
1.How can I place an order for SA26CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA26CAHE3/54 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 SA26CAHE3/54 reliable?
The price and inventory of SA26CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA26CAHE3/54 is usually 5 days.
3.What payment methods are accepted for SA26CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA26CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA26CAHE3/54?
SA26CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA26CAHE3/54 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 SA26CAHE3/54?
For technical support, including SA26CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA26CAHE3/54 requirements.
6.How does Aetrix verify that SA26CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA26CAHE3/54 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 SA26CAHE3/54 meets industry standards.
7.What is the process for return or replacement of SA26CAHE3/54?
All SA26CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA26CAHE3/54, 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 SA26CAHE3/54 part is unused and in its original packaging.
Return procedure for SA26CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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