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Vishay General Semiconductor - Diodes Division SA14CA-E3/54
- Part No.:
- SA14CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA14CA-E3/54.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,656
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Product details
Overview
SA14CA-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 and power lines. It features 500 W peak pulse power (10/1000 μs), 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR at 1 mA), 21.6 A peak pulse current (IPPM), and 23.2 V maximum clamping voltage (VC) - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits.
For engineers reviewing the SA14CA-E3/54 datasheet, SA14CA-E3/54 pinout, SA14CA-E3/54 application, or SA14CA-E3/54 equivalent, this page delivers verified electrical parameters, DO-15 terminal mapping, bidirectional clamping behavior, AEC-Q101 qualification status, and real-world protection use cases - all aligned with Vishay Document #88378 (Rev. 27-Sep-2021).
Technical Context
The SA14CA-E3/54 operates as a symmetrical avalanche diode, conducting in both directions when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling consistent clamping under repetitive 10/1000 μs transients at 0.01% duty cycle.
It exhibits a temperature coefficient of +14 mV/°C for VBR, supports operating junction temperatures from –55 °C to +175 °C, and maintains <1 μA reverse leakage at VWM = 14 V - critical for low-power sensor line protection where standby current integrity matters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before clamping begins; defines safe signal line bias margin. |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - tight breakdown window ensures predictable turn-on across production lots. |
| VC @ IPPM | 23.2 V at 21.6 A - clamping voltage limits downstream IC stress during 10/1000 μs surges. |
| PPPM | 500 W - peak transient energy handling capability per standard 10/1000 μs waveform. |
| IPPM | 21.6 A - maximum non-repetitive surge current the device safely clamps without degradation. |
| TJ max | +175 °C - high junction temperature rating enables use in under-hood automotive and industrial environments. |
| Leakage @ VWM | <1 μA - negligible standby current draw preserves battery life in always-on sensor nodes. |
Pinout & Package
Package: DO-15 (DO-204AC), axial leaded, molded epoxy case with matte tin-plated leads. No polarity marking - bidirectional symmetry eliminates orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; no cathode band - simplifies PCB layout and eliminates assembly errors. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term VBR stability and resistance to humidity-induced parameter drift in harsh environments. |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics requiring reliability under thermal cycling and vibration. |
| 500 W peak pulse power (10/1000 μs) | Handles IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without failure when properly mounted with low-inductance traces. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets fire-safety requirements for industrial and telecom equipment enclosures. |
| Solderable per J-STD-002/JESD 22-B102 | Compatible with standard reflow and wave soldering processes; withstands 275 °C for 10 s per JESD 22-B106. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before it reaches signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADC front-ends by limiting transient voltage to ≤23.2 V during 21.6 A surges. | Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across 24 V DC input terminals to clamp fast-rising transients (<1 ns rise time) induced by contactor switching. Use Value: Maintains system uptime by eliminating false triggering and input stage failures caused by repetitive 500 W surges up to 0.01% duty cycle. |
| Telecom Line Interface | Consumer Appliance Power Supply |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station backhaul units from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: First-stage protection device upstream of GDT or polymer PTC, absorbing initial high-energy portion of 10/1000 μs threat waveform. Use Value: Reduces required secondary protection component count by delivering 23.2 V clamping at 21.6 A - well below typical 30 V absolute maximum ratings of interface ICs. | Use Scenario: Suppressing ESD and switching spikes on AC-DC adapter primary-side rectifier outputs feeding SMPS controllers in washing machines and HVAC systems. IC Role / Device Role / Timing Role: Secondary overvoltage clamp across bulk capacitor to prevent overvoltage shutdown or MOSFET avalanche failure during transformer reset anomalies. Use Value: Enables robust Class II isolation compliance by limiting transient overshoot to 23.2 V while maintaining <1 μA leakage at 14 V standby. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14CA | Same VWM (14 V) and VC (23.2 V), but SMA package (surface-mount); lower IPPM (21.2 A vs. 21.6 A) and 400 W PPPM. | Requires PCB redesign for SMD footprint; better suited for space-constrained consumer boards than through-hole industrial modules. | Select SMAJ14CA only when board area is constrained and thermal coupling to copper pour can compensate for lower power rating. |
| P6KE15CA | Higher VWM (15 V), wider VBR range (16.7–18.5 V), same DO-15 package; 600 W PPPM but higher VC (24.4 V). | Marginally higher clamping voltage may exceed absolute max ratings of 20 V-tolerant ICs; preferred where higher stand-off is needed for noisy 15 V rails. | Choose P6KE15CA if system nominal voltage is ≥15 V and clamping margin above 23.2 V is acceptable for protected devices. |
Compared with SMAJ14CA and P6KE15CA, the SA14CA-E3/54 offers optimal balance of 14 V stand-off precision, 23.2 V clamping, DO-15 through-hole reliability, and AEC-Q101 qualification - making it the preferred choice for automotive and industrial designs requiring proven mechanical robustness and thermal endurance.
Availability
SA14CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface applications requiring stable component supply and long-term lifecycle support.
Supply support for SA14CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and AEC-Q qualification.
The SAxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, bidirectional transient suppression in automotive, industrial, and telecom infrastructure where repeatable clamping performance and high-temperature operation are mandatory.
FAQ
What is the breakdown voltage range of the SA14CA-E3/54?
The SA14CA-E3/54 has a guaranteed breakdown voltage (VBR) range of 15.6 V to 17.2 V at 1 mA test current, per Vishay Document #88378. This tight ±5% tolerance ensures consistent clamping onset across temperature and production batches, and is measured under standardized conditions with 10% derating above 25 °C ambient.
Is the SA14CA-E3/54 suitable for automotive applications?
Yes, the SA14CA-E3/54 is AEC-Q101 qualified (as noted in the "Notes" section of Vishay Document #88378), meaning it has passed stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life. Its DO-15 package, 175 °C max junction temperature, and stable VBR make it appropriate for under-hood and body-control module deployments.
Does the SA14CA-E3/54 have polarity markings?
No, the SA14CA-E3/54 does not have polarity markings because it is a bidirectional TVS diode - both terminals are functionally identical. The datasheet explicitly states "no marking on bidirectional types", confirming that orientation during PCB assembly is irrelevant, unlike unidirectional variants such as SA14A-E3/54.
What is the maximum clamping voltage of the SA14CA-E3/54 at rated peak pulse current?
The SA14CA-E3/54 has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current (IPPM) of 21.6 A, tested with a 10/1000 μs waveform. This value is specified in the "ELECTRICAL CHARACTERISTICS" table on page 2 of Vishay Document #88378 and represents the upper limit of voltage seen by protected circuitry during worst-case surge events.
Can the SA14CA-E3/54 be used in place of a unidirectional TVS like SA14A-E3/54?
No - the SA14CA-E3/54 is strictly bidirectional and cannot replace unidirectional TVS diodes like SA14A-E3/54 in DC-biased circuits where forward conduction must be blocked. While both share VWM = 14 V, the SA14A-E3/54 has a cathode band and conducts only in reverse; substituting SA14CA-E3/54 would allow unintended forward current flow and potential circuit malfunction.
SA14CA-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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 21.6A
- 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)
SA14CA-E3/54 FAQ
1.How can I place an order for SA14CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA14CA-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 SA14CA-E3/54 reliable?
The price and inventory of SA14CA-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 SA14CA-E3/54 is usually 5 days.
3.What payment methods are accepted for SA14CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA14CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA14CA-E3/54?
SA14CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA14CA-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 SA14CA-E3/54?
For technical support, including SA14CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA14CA-E3/54 requirements.
6.How does Aetrix verify that SA14CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA14CA-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 SA14CA-E3/54 meets industry standards.
7.What is the process for return or replacement of SA14CA-E3/54?
All SA14CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA14CA-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 SA14CA-E3/54 part is unused and in its original packaging.
Return procedure for SA14CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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