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Vishay General Semiconductor - Diodes Division SA26CA-E3/54
- Part No.:
- SA26CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA26CA-E3/54.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,396
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Product details
Overview
SA26CA-E3/54 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), 42.1 V maximum clamping voltage (VC) at 11.9 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA26CA-E3/54 datasheet, SA26CA-E3/54 pinout, SA26CA-E3/54 application, or SA26CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-15 through-hole compatibility, 175 °C junction temperature rating, low incremental surge resistance, and compliance with IEC 61000-4-2/4-4/4-5 ESD/surge immunity standards.
Technical Context
The SA26CA-E3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling symmetrical clamping in both polarities. Its bidirectional architecture eliminates polarity marking and supports AC-coupled or floating-line protection without orientation constraints.
It delivers 500 W transient suppression per 10/1000 μs waveform at TA = 25 °C, derating linearly above 25 °C per Vishay's Fig. 2, and sustains 3.0 W steady-state power dissipation at lead temperature (TL) = 75 °C per Fig. 5. Clamping response time is sub-nanosecond, with low dynamic impedance ensuring tight voltage control during surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 28.9 V / 31.9 V - Breakdown occurs within this range at 1 mA test current; defines clamping onset threshold |
| VC @ IPPM | 42.1 V - Clamped voltage across device at peak pulse current of 11.9 A; determines protected circuit stress level |
| PPPM | 500 W - Peak transient energy handling capacity under standardized 10/1000 μs surge waveform |
| IPPM | 11.9 A - Maximum non-repetitive surge current the device safely clamps without degradation |
| TJ max. | 175 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
SA26CA-E3/54 uses the DO-15 (DO-204AC) axial-leaded package: molded epoxy body, matte tin-plated leads, RoHS-compliant, 0.432 g unit weight, and UL 94 V-0 flammability rating. Bidirectional construction means no cathode band; terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetric) | Bidirectional avalanche junction terminal | Either lead serves as input/output; no polarity dependency - simplifies PCB layout and eliminates orientation errors |
| Lead 1 / Lead 2 | Through-hole mechanical interface | Supports manual or wave soldering per J-STD-002; 275 °C max solder dip for 10 s; JESD 201 Class 1A whisker resistance |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable, repeatable avalanche characteristics over lifetime and temperature; prevents surface degradation under humidity or bias stress |
| 500 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 kV line-to-ground) surge immunity requirements for industrial and automotive systems |
| Low incremental clamping resistance | Minimizes VC – VBR differential (ΔV ≈ 13.2 V), reducing voltage overshoot seen by downstream ICs during fast transients |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules where reliability under thermal and vibration stress is mandatory |
| DO-15 mechanical robustness | Withstands 10 N axial pull force and >1000 thermal cycles (-55 °C to +175 °C); compatible with legacy through-hole assembly infrastructure |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs (e.g., lighting control, window lift modules) against load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed between power rail and ground, absorbing up to 500 W surges without failure. Use Value: Limits transient voltage to ≤42.1 V, preventing damage to 36 V-rated CAN transceivers and microcontrollers downstream. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules exposed to field wiring inductive kick. IC Role / Device Role / Timing Role: Bidirectional shunt clamp on differential or single-ended signal lines, responding in <1 ns to fast-rising transients. Use Value: Maintains signal integrity by clamping ±26 V transients while adding <10 pF capacitance - negligible impact on 10 kHz sensor bandwidth. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Front-end protection for Ethernet PHY interfaces or DSL line drivers subjected to lightning-induced surges on copper pairs. IC Role / Device Role / Timing Role: First-stage TVS on unshielded twisted-pair inputs, working in coordination with GDTs or polymer PTCs. Use Value: Withstands repeated 10/1000 μs surges up to 500 W at 0.01% duty cycle, extending system MTBF in outdoor telecom cabinets. | Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines or HVAC blowers connected to microcontroller GPIOs. IC Role / Device Role / Timing Role: Localized clamp across motor terminals or MOSFET drain-source, diverting inductive energy away from gate drivers. Use Value: Operates reliably at 175 °C ambient, surviving sustained high-temp chassis environments without derating loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA | Surface-mount SMB package (vs. DO-15 through-hole); identical VWM, VBR, and PPPM; slightly lower IPPM (11.5 A vs. 11.9 A) | Requires SMT reflow process; better suited for space-constrained PCBs but lacks axial mechanical retention strength | Select SMBJ26CA when board area is limited and automated SMT assembly is available. |
| 1.5KE27CA | Higher PPPM (1500 W), larger DO-201 package; VWM = 27 V (vs. 26 V); VC = 43.0 V at 34.7 A | Targets higher-energy threats (e.g., ISO 7637-2 Pulse 5a); less suitable for compact consumer designs due to size and thermal mass | Choose 1.5KE27CA only when system-level testing confirms need for >500 W surge margin. |
Compared with SMBJ26CA and 1.5KE27CA, the SA26CA-E3/54 offers optimal balance of proven automotive reliability, through-hole manufacturability, and precise 26 V clamping - making it preferred for cost-sensitive, high-volume automotive and industrial assemblies where DO-15 footprint and AEC-Q101 validation are mandatory.
Availability
SA26CA-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SA26CA-E3/54 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SAxxCA series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where bidirectional clamping, AEC-Q101 compliance, and DO-15 mechanical ruggedness are critical design requirements.
FAQ
What is the clamping voltage of SA26CA-E3/54 at its rated peak pulse current?
The SA26CA-E3/54 has a maximum clamping voltage (VC) of 42.1 V at its rated peak pulse current (IPPM) of 11.9 A under 10/1000 μs waveform conditions. This value is measured per Vishay Document 88378 and defines the upper voltage limit imposed on protected circuits during surge events. The SA26CA-E3/54 maintains this clamping performance across its full operating temperature range.
Is SA26CA-E3/54 suitable for automotive applications?
Yes, SA26CA-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 175 °C maximum junction temperature, glass-passivated junction, and validated reliability under temperature cycling, HTRB, and ESD stress make it appropriate for engine control units, body electronics, and ADAS modules. The SA26CA-E3/54 meets automotive-grade surge immunity requirements per ISO 7637-2 and IEC 61000-4-5.
Does SA26CA-E3/54 have polarity markings on its package?
No, SA26CA-E3/54 does not have polarity markings because it is a bidirectional TVS diode. The DO-15 package has no cathode band or other visual indicator - both leads are functionally identical and interchangeable. This symmetry simplifies PCB layout and eliminates orientation-related assembly errors, unlike unidirectional variants such as SA26A-E3/54 which feature a cathode band.
What is the standoff voltage (VWM) specification for SA26CA-E3/54?
The standoff voltage (VWM) for SA26CA-E3/54 is 26 V - the maximum DC or RMS voltage that can be continuously applied without triggering significant leakage current (<1 μA typical). This parameter ensures the SA26CA-E3/54 remains non-conductive during normal operation while remaining ready to clamp transients exceeding ~28.9 V. It is specified per Vishay's SA5.0A–SA170CA datasheet revision 27-Sep-2021.
Can SA26CA-E3/54 be used in AC signal line protection?
Yes, SA26CA-E3/54 is specifically designed for bidirectional applications including AC signal line protection. Its symmetrical avalanche characteristics allow it to clamp positive and negative transients equally - ideal for protecting RS-485, CAN, or audio lines where voltage swings occur in both directions. The SA26CA-E3/54's low capacitance (<10 pF at 0 V) avoids signal distortion in frequencies up to several MHz.
SA26CA-E3/54 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA26CA-E3/54 FAQ
1.How can I place an order for SA26CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA26CA-E3/54 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 SA26CA-E3/54 reliable?
The price and inventory of SA26CA-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA26CA-E3/54 is usually 5 days.
3.What payment methods are accepted for SA26CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA26CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA26CA-E3/54?
SA26CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA26CA-E3/54 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 SA26CA-E3/54?
For technical support, including SA26CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA26CA-E3/54 requirements.
6.How does Aetrix verify that SA26CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA26CA-E3/54 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 SA26CA-E3/54 meets industry standards.
7.What is the process for return or replacement of SA26CA-E3/54?
All SA26CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA26CA-E3/54, 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 SA26CA-E3/54 part is unused and in its original packaging.
Return procedure for SA26CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA26CA-E3/54 Tags
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