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Vishay General Semiconductor - Diodes Division SA24CA-E3/54
- Part No.:
- SA24CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA24CA-E3/54.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,303
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Product details
Overview
SA24CA-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), 24 V stand-off voltage (VWM), 38.9 V maximum clamping voltage at 12.9 A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SA24CA-E3/54 datasheet, SA24CA-E3/54 pinout, SA24CA-E3/54 application, or SA24CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-15 mechanical compatibility, 175 °C max junction temperature, low incremental surge resistance, and compliance with IEC 61000-4-2/4-4/4-5 ESD/surge immunity standards.
Technical Context
The SA24CA-E3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling symmetrical breakdown in both polarities. Its bidirectional structure eliminates polarity marking and supports AC-coupled or floating-line protection without orientation constraints.
It delivers 38.9 V clamping at 12.9 A (10/1000 μs waveform), with 26.7–29.5 V breakdown range at 1 mA test current and <1 μA reverse leakage at 24 V. Thermal derating begins above 25 °C ambient, maintaining 3.0 W steady-state dissipation at 75 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 26.7 V / 29.5 V at 1 mA - Ensures reliable turn-on within defined tolerance band under transient stress |
| VC @ IPPM | 38.9 V at 12.9 A - Limits downstream voltage during 10/1000 μs surge to protect 3.3 V/5 V ICs |
| PPPM | 500 W - Sustains high-energy transients common in automotive load-dump or inductive switching |
| TJ max | 175 °C - Enables operation in under-hood automotive environments and industrial enclosures |
| AEC-Q101 | Qualified - Meets stress-test requirements for automotive electronic modules per JESD22-A108 |
Pinout & Package
DO-15 (DO-204AC) molded epoxy package with matte tin-plated leads; bidirectional symmetry means no cathode marking - both terminals are electrically identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals conduct identically during positive or negative overvoltage events - no PCB orientation dependency |
| Leads (2) | Thermal and electrical interface | Supports 275 °C solder dip (10 s) and J-STD-002 solderability; enables manual or automated assembly |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable breakdown voltage and long-term reliability under repeated surge stress |
| 500 W peak pulse power (10/1000 μs) | Handles high-energy transients from relay coil decay, motor commutation, or lightning-induced surges |
| AEC-Q101 qualification | Validated for automotive powertrain, body control, and ADAS modules requiring extended temperature and life-cycle robustness |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and transportation equipment |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus or 12 V supply rails in vehicle door modules against load-dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamping device placed across power rail and ground to shunt surge energy before it reaches MCU or transceiver. Use Value: Clamps 12 V system spikes to ≤38.9 V, preserving 3.3 V logic-level components and meeting ISO 7637-2 Pulse 5a requirements. | Use Scenario: Safeguarding analog outputs of pressure or temperature sensors connected to PLC I/O cards exposed to field wiring noise. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at sensor connector entry point to suppress ESD and fast transients without distorting mV-level signals. Use Value: Sub-1 μA leakage at 24 V ensures minimal offset error; 38.9 V clamping prevents op-amp saturation during 4–20 mA loop faults. |
| Telecom Line Interface Protection | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485 transceivers in base station backhaul links from induced surges on long-distance twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional TVS mounted differential-mode across A/B lines to clamp common-mode and differential transients simultaneously. Use Value: Symmetrical VBR (26.7–29.5 V) ensures balanced clamping on both lines, maintaining signal integrity during 1 kV/500 A surge events. | Use Scenario: Adding secondary-level surge immunity to USB 2.0 data lines in smart home hubs subjected to user-handling ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between D+ and D− to absorb ±15 kV contact ESD per IEC 61000-4-2 without affecting 480 Mbps signaling. Use Value: 24 V VWM avoids false triggering during normal 3.3 V data swings while delivering sub-nanosecond response to ESD pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | Same VWM (24 V), lower PPPM (400 W), SMA package (smaller footprint, lower thermal mass) | Better suited for space-constrained PCBs but less robust for repetitive high-energy surges | Select SMAJ24CA when board area is critical and surge duty cycle remains <0.01 % |
| 1.5KE24CA | Higher PPPM (1500 W), DO-201 package (larger, higher thermal inertia), same VWM/VC specs | Preferred for industrial motor drives where single-event energy exceeds 500 W capability | Choose 1.5KE24CA when protecting high-inductance loads with >100 mJ single-pulse energy |
Compared with SMAJ24CA and 1.5KE24CA, the SA24CA-E3/54 offers optimal balance of automotive qualification, DO-15 manufacturability, and 500 W surge handling - making it ideal for cost-sensitive, medium-energy protection in production automotive and industrial designs.
Availability
SA24CA-E3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom line protection, and consumer USB port hardening requiring stable component supply across multi-year production cycles.
Supply support for SA24CA-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 passive components with emphasis on reliability and automotive-grade validation.
The SAxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for bidirectional transient suppression in harsh environments including automotive, industrial controls, and communications infrastructure.
FAQ
What is the clamping voltage of the SA24CA-E3/54 under a 10/1000 μs surge?
The SA24CA-E3/54 has a maximum clamping voltage (VC) of 38.9 V at 12.9 A peak pulse current under the standardized 10/1000 μs waveform. This value is measured per Figure 9 in the Vishay datasheet 88378 and defines the upper voltage limit imposed on protected circuitry during surge events. The SA24CA-E3/54 maintains this clamping performance across its full operating temperature range.
Is the SA24CA-E3/54 suitable for automotive applications?
Yes, the SA24CA-E3/54 is AEC-Q101 qualified, confirming its suitability for automotive applications including body electronics, infotainment, and ADAS subsystems. Its 175 °C maximum junction temperature, glass-passivated junction, and DO-15 mechanical robustness meet automotive environmental stress requirements. The SA24CA-E3/54 is explicitly listed in Vishay's AEC-Q101 qualified devices table.
Does the SA24CA-E3/54 have polarity markings?
No, the SA24CA-E3/54 is a bidirectional TVS diode and carries no polarity marking on the DO-15 package. Both terminals are functionally identical, allowing unrestricted placement on PCBs without orientation concerns. This symmetry simplifies layout and eliminates risk of reverse installation - a key advantage over unidirectional variants like SA24A-E3/54.
What is the maximum reverse leakage current of the SA24CA-E3/54 at rated stand-off voltage?
At 24 V reverse stand-off voltage (VWM) and 25 °C ambient, the SA24CA-E3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA. This low leakage ensures minimal power loss in always-on circuits and preserves accuracy in precision analog sensing paths. The SA24CA-E3/54 maintains leakage below 5 μA up to 80 % of VWM across its full temperature range.
Can the SA24CA-E3/54 be used in place of a unidirectional TVS like SA24A-E3/54?
No - the SA24CA-E3/54 is bidirectional and cannot replace unidirectional TVS diodes such as SA24A-E3/54 in DC-biased circuits requiring forward conduction blocking. While both share VWM = 24 V, the SA24A-E3/54 has a cathode band and blocks forward current, whereas the SA24CA-E3/54 conducts equally in both directions. Substitution requires verifying circuit topology and transient polarity requirements.
SA24CA-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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 12.9A
- 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)
SA24CA-E3/54 FAQ
1.How can I place an order for SA24CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA24CA-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 SA24CA-E3/54 reliable?
The price and inventory of SA24CA-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 SA24CA-E3/54 is usually 5 days.
3.What payment methods are accepted for SA24CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA24CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA24CA-E3/54?
SA24CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA24CA-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 SA24CA-E3/54?
For technical support, including SA24CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA24CA-E3/54 requirements.
6.How does Aetrix verify that SA24CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA24CA-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 SA24CA-E3/54 meets industry standards.
7.What is the process for return or replacement of SA24CA-E3/54?
All SA24CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA24CA-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 SA24CA-E3/54 part is unused and in its original packaging.
Return procedure for SA24CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA24CA-E3/54 Tags
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