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Vishay General Semiconductor - Diodes Division SA43CA-E3/54
- Part No.:
- SA43CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA43CA-E3/54.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,459
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Product details
Overview
SA43CA-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 43 V stand-off voltage (VWM), 47.8–52.8 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 μs), 7.2 A peak pulse current (IPPM), and clamps to ≤69.4 V at rated surge. It protects MOSFETs and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SA43CA-E3/54 datasheet, SA43CA-E3/54 pinout, SA43CA-E3/54 application, or SA43CA-E3/54 equivalent, this page delivers verified electrical specs, DO-15 terminal mapping, bidirectional clamping behavior, AEC-Q101 qualification status, and direct alternatives for ESD/surge protection design-in.
Technical Context
The SA43CA-E3/54 operates as a symmetrical avalanche diode with identical forward and reverse breakdown characteristics, enabling bidirectional transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, critical for consistent clamping under repetitive 10/1000 μs surges at 0.01 % duty cycle.
Designed for operation across –55 °C to +175 °C junction temperature range, it maintains clamping performance under thermal stress and supports soldering per JESD 22-B106 (275 °C, 10 s). The device meets AEC-Q101 stress testing requirements and exhibits <1 μA reverse leakage at 43 V, confirming low standby power loss in always-on protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 36–42 V nominal bus systems. |
| VBR (min/max) | 47.8 V / 52.8 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system overvoltage thresholds. |
| IPPM | 7.2 A (10/1000 μs) - Peak surge current handling capacity; sustains 500 W transient energy without failure. |
| VC | ≤69.4 V at IPPM - Clamped voltage seen by protected IC; guarantees downstream components remain below 70 V absolute maximum rating. |
| PPPM | 500 W - Peak pulse power rating per single 10/1000 μs waveform; validates suitability for IEC 61000-4-5 Level 3/4 surge immunity. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive or high-ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, HAST, and UHST; suitable for ASIL-B supporting subsystems. |
Pinout & Package
SA43CA-E3/54 uses the DO-15 (DO-204AC) axial-leaded package: molded epoxy body, matte tin-plated leads, 0.130–0.138 inch diameter, 1.0 inch minimum lead length. No polarity marking - symmetric bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (either lead) | Bidirectional avalanche junction terminal | Interchangeable terminals; no cathode band - enables blind insertion and eliminates orientation-dependent layout constraints. |
| Lead 1 / Lead 2 | Current path for transient conduction | Both leads conduct identically in either direction during surge; requires no PCB-level polarity assignment. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables ±5 % VBR tolerance and stable long-term clamping performance under thermal cycling and humidity stress. |
| 500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 1 kV open-circuit / 0.5 A short-circuit test levels in industrial equipment. |
| AEC-Q101 qualification | Validates robustness for automotive body electronics, ADAS sensor interfaces, and infotainment power rails without derating. |
| Low incremental surge resistance | Minimizes VC – VBR differential (<22 V), reducing let-through energy to protected ICs during fast-rising transients. |
| UL 94 V-0 molding compound | Ensures flame-retardant enclosure integrity in enclosed enclosures and safety-critical control modules. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power pins from load-dump and inductive switching spikes on 12 V battery rail. IC Role / Device Role: Bidirectional clamping element placed between VCC and GND, shunting transients exceeding 43 V. Use Value: Prevents latch-up or gate oxide damage in 5 V/3.3 V logic ICs by limiting transient voltage to ≤69.4 V with sub-ns response. |
Use Scenario: Shields 24 V digital input optocoupler front-end from field-wiring induced surges in factory automation cabinets. IC Role / Device Role: Primary surge suppressor on dry-contact input line, mounted upstream of series current-limiting resistor. Use Value: Maintains <1 μA leakage at 24 V nominal, avoiding false triggering while clamping 1 kV/0.5 A surges to safe levels. |
| Automotive Camera Sensor Interface | Telecom Power Supply Monitoring Line |
Use Scenario: Guards MIPI CSI-2 data lines and 1.8 V bias supply against ESD and cable discharge events in rear-view camera modules. IC Role / Device Role: Low-capacitance TVS (typ. <100 pF at 0 V) placed directly at connector entry point. Use Value: Clamps ±8 kV contact ESD (IEC 61000-4-2) without distorting high-speed video signals due to symmetrical bidirectional response. |
Use Scenario: Protects voltage supervisor IC monitoring -48 V telecom power feed against lightning-induced common-mode surges. IC Role / Device Role: Bidirectional clamp across sense resistor network, referenced to isolated ground plane. Use Value: Withstands 175 °C junction temperature during sustained overvoltage, ensuring fail-safe shutdown signaling remains intact. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43CA | Same VWM (43 V), lower PPPM (400 W), SMA package (surface-mount) | Requires PCB re-layout for SMD footprint; better suited for space-constrained consumer boards than through-hole industrial designs. | Select when board area is limited and automated assembly is preferred; verify thermal relief pad design for 3 W steady-state dissipation. |
| 1.5KE43CA | Same VWM (43 V), higher PPPM (1500 W), DO-201 package (larger axial) | Higher surge margin for utility-grade metering or outdoor telecom; requires larger cutout and higher mounting torque. | Choose for legacy DO-201 socket compatibility or where >500 W surge headroom is mandated by system-level standards. |
Compared with SMAJ43CA and 1.5KE43CA, the SA43CA-E3/54 offers optimal balance of AEC-Q101 qualification, DO-15 mechanical robustness, and 500 W surge capability - making it the preferred choice for cost-sensitive, high-reliability automotive and industrial through-hole protection.
Availability
SA43CA-E3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and telecom power monitoring requiring stable component supply and full traceability.
Supply support for SA43CA-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, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The SAxxCA series targets high-volume transient suppression in harsh-environment applications, combining AEC-Q101 compliance, glass-passivated junctions, and standardized DO-15 packaging for broad design reuse.
FAQ
What is the breakdown voltage range for SA43CA-E3/54?
The SA43CA-E3/54 has a guaranteed breakdown voltage (VBR) range of 47.8 V to 52.8 V at 1 mA test current, measured per ANSI/IEEE C62.35. This tight ±5 % tolerance ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 48 V nominal systems where overvoltage margins are narrow.
Is SA43CA-E3/54 suitable for automotive applications?
Yes, SA43CA-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its 175 °C maximum junction temperature, glass-passivated junction, and validation across HTOL, temperature cycling, and HAST tests confirm suitability for under-hood BCMs, ADAS sensor power rails, and infotainment power supplies where reliability under thermal and vibration stress is mandatory.
How does SA43CA-E3/54 differ from unidirectional SA43A-E3/54?
The SA43CA-E3/54 is bidirectional with identical forward/reverse characteristics and no polarity marking, while SA43A-E3/54 is unidirectional with a cathode band and conducts only in reverse. SA43CA-E3/54 clamps transients regardless of polarity - essential for AC-coupled lines or floating references - whereas SA43A-E3/54 requires correct orientation and cannot suppress positive-going surges on grounded lines.
What is the maximum clamping voltage of SA43CA-E3/54 at rated surge current?
The SA43CA-E3/54 clamps to a maximum of 69.4 V at its rated peak pulse current (IPPM) of 7.2 A under 10/1000 μs waveform conditions. This value is specified in the Vishay datasheet (Document Number: 88378, page 2) and represents the worst-case voltage imposed on protected circuitry during a full-rated surge event.
Does SA43CA-E3/54 require heatsinking for continuous operation?
No external heatsink is required for SA43CA-E3/54 under normal conditions. Its 3.0 W steady-state power dissipation rating applies at 75 °C lead temperature (TL), and typical applications involve only transient conduction. However, in high-duty-cycle surge environments, PCB copper pour under the DO-15 body improves thermal performance and extends lifetime per Fig. 5 derating curve.
SA43CA-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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- 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)
SA43CA-E3/54 FAQ
1.How can I place an order for SA43CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA43CA-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 SA43CA-E3/54 reliable?
The price and inventory of SA43CA-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 SA43CA-E3/54 is usually 5 days.
3.What payment methods are accepted for SA43CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA43CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA43CA-E3/54?
SA43CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA43CA-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 SA43CA-E3/54?
For technical support, including SA43CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA43CA-E3/54 requirements.
6.How does Aetrix verify that SA43CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA43CA-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 SA43CA-E3/54 meets industry standards.
7.What is the process for return or replacement of SA43CA-E3/54?
All SA43CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA43CA-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 SA43CA-E3/54 part is unused and in its original packaging.
Return procedure for SA43CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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