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Vishay General Semiconductor - Diodes Division SA10CA/54
- Part No.:
- SA10CA/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA10CA/54.pdf
- Description:
- TVS DIODE 10VWM 17VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,965
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Product details
Overview
SA10CA from Littelfuse is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-204AC (Axial) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 10 V stand-off voltage (VWM), 11.1–13.6 V breakdown voltage (VBR at 1 mA), 18.8 V clamping voltage (VC) at 26.6 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SA10CA datasheet, SA10CA pinout, SA10CA application, or SA10CA equivalent, this device serves as a high-reliability, low-leakage (≤1.0 µA at VWM) TVS solution for industrial control I/O, automotive body electronics, and telecom interface protection where fast response (<5.0 ns), stable temperature coefficient (+10.0 mV/°C), and UL 94V-0 flammability compliance are required.
Technical Context
The SA10CA operates as a symmetrical, bidirectional avalanche diode - its junction responds identically in both polarities, enabling protection against positive and negative transients without polarity constraints. Its glass-passivated junction ensures stable leakage and repeatable breakdown behavior across temperature (-55°C to +175°C).
It delivers 500 W peak pulse power handling per 10/1000 µs waveform at 25°C ambient, derated linearly above that temperature per Fig. 2, and supports steady-state dissipation of 3.0 W when mounted on a 40 × 40 mm copper pad. The device exhibits low incremental surge resistance and clamps within 5.0 ns - critical for safeguarding MOSFET gates, microcontroller I/O, and RS-485 transceivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 10.0 V - maximum continuous reverse operating voltage before significant conduction begins |
| Breakdown Voltage (VBR) | 11.1–13.6 V at 1.0 mA - guaranteed avalanche initiation range under standardized test conditions |
| Clamping Voltage (VC) | 18.8 V at 26.6 A - maximum voltage seen by protected circuit during 10/1000 µs transient event |
| Peak Pulse Power (PPPM) | 500 W - surge energy absorption capacity for non-repetitive transients per JEDEC standard |
| Leakage Current (ID) | ≤1.0 µA at VWM - negligible standby power loss and minimal loading on sensitive analog/sensor circuits |
| Response Time | 5.0 ns - time from transient onset to clamping engagement, sufficient to protect CMOS logic and ADC inputs |
| Temperature Coefficient | +10.0 mV/°C - predictable VBR drift with junction temperature, enabling accurate margining in wide-temp designs |
Pinout & Package
DO-204AC (Axial) package: molded plastic body with solder-plated axial leads; polarity not applicable for bidirectional operation - symmetric terminals with no cathode/anode marking required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically - connects in parallel across protected line-to-line or line-to-ground; no orientation dependency |
| Lead 1 | Current entry/exit point | Accepts surge current bidirectionally; lead length ≥0.375" (9.5 mm) required for rated 3.0 W steady-state dissipation |
| Lead 2 | Current entry/exit point | Matches Lead 1 electrically and thermally; enables PCB mounting in any orientation without functional impact |
Key Features
| Feature | Design Value |
|---|---|
| UL 94V-0 flammability rating | Plastic housing meets stringent fire-safety requirements for industrial and transportation equipment enclosures |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| 500 W peak pulse power (10/1000 µs) | Withstands common lightning-induced surges (IEC 61000-4-5 Level 3: 1 kV/42 Ω) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.6) | Minimizes overvoltage stress on downstream ICs - e.g., keeps 3.3 V MCU I/O below 20 V during clamping |
| Fast 5.0 ns response | Engages before ESD or switching transients can damage gate oxides in MOSFETs or input stages of op-amps |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers from inductive kickback and EFT bursts. IC Role / Device Role: Bidirectional shunt clamp placed across input terminal and ground to limit transient voltage to safe levels. Use Value: Prevents false triggering and latch-up in optocoupler input stages while maintaining ≤1 µA leakage at 24 V nominal. |
Use Scenario: Safeguarding LIN bus transceivers and window motor drivers against load dump and jump-start transients. IC Role / Device Role: Line-to-ground TVS on 12 V supply rail and signal lines to absorb ISO 7637-2 Pulse 1/2/5a energy. Use Value: Clamps 18.8 V at 26.6 A - compatible with BCM's 16 V max-rated components and withstands repeated 10/1000 µs pulses. |
| RS-485 Communication Port | DC Power Rail Protection |
Use Scenario: Shielding half-duplex RS-485 transceivers (e.g., MAX13487) from ESD and cable discharge events in factory automation networks. IC Role / Device Role: Differential-mode TVS between A/B lines and common-mode TVS from each line to ground. Use Value: 5.0 ns response ensures clamping occurs before transceiver input structures experience destructive voltage overshoot. |
Use Scenario: Guarding 12 V or 24 V DC power inputs in embedded gateways against induced surges from nearby AC switching. IC Role / Device Role: Primary overvoltage clamp placed directly at power entry point before bulk capacitance and regulators. Use Value: 500 W rating handles multi-millisecond transients; DO-204AC axial form factor allows through-hole mounting with mechanical strain relief. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA | DO-214AA (SMB) surface-mount package; identical VWM/VC specs but 600 W PPPM; 10% higher clamping voltage (19.9 V at 24.9 A) | Requires PCB re-layout for SMT; better suited for space-constrained consumer boards than industrial through-hole assemblies | Select SMBJ10CA only if board real estate is limited and thermal management via PCB copper is assured. |
| P6KE10CA | DO-15 package; same VWM/VBR range but lower PPPM (600 W) and higher VC (20.1 V at 24.9 A); larger body (5.2 mm diameter vs. SA10CA's 3.6 mm) | Higher clamping voltage reduces margin for 12 V systems; axial leads longer (10 mm min.) affecting mechanical fit in tight chassis | Prefer SA10CA over P6KE10CA when clamping voltage headroom is critical and compact axial footprint is needed. |
Compared with SMBJ10CA and P6KE10CA, the SA10CA offers the lowest clamping voltage (18.8 V) in its class and the smallest DO-204AC axial package - making it optimal for legacy industrial designs requiring proven reliability, easy hand-soldering, and minimal board space overhead.
Availability
SA10CA is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body electronics, RS-485 communication ports, and DC power rail protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SA10CA 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
Littelfuse is a global leader in circuit protection, specializing in fuses, TVS diodes, and surge suppression technologies for industrial, automotive, and consumer markets.
The SAxxCA series belongs to Littelfuse's TransZorb™ family - engineered specifically for cost-effective, high-energy transient suppression in commercial and industrial environments where axial mounting and UL certification are mandatory.
FAQ
What is the maximum clamping voltage of the SA10CA under standard test conditions?
The SA10CA has a maximum clamping voltage (VC) of 18.8 V when subjected to a 10/1000 µs waveform at 26.6 A peak pulse current. This value is measured per JEDEC standards and represents the highest voltage the protected circuit will experience during a defined surge event. The SA10CA maintains this clamping performance across its full operating temperature range (-55°C to +175°C), making it reliable for harsh-environment applications.
Is the SA10CA suitable for protecting 3.3 V or 5 V logic circuits?
No - the SA10CA is not appropriate for direct protection of 3.3 V or 5 V logic circuits because its 10 V stand-off voltage (VWM) exceeds those rail voltages, causing premature conduction and potential malfunction. For low-voltage logic, devices like SMAJ5.0A (5.0 V VWM) or USBLC6-2SC6 (5.5 V VWM) are recommended. The SA10CA is intended for 12 V, 24 V, or higher DC systems where its 10 V threshold provides adequate margin.
Does the SA10CA require polarity-specific PCB layout?
No - the SA10CA is a bidirectional TVS diode, meaning its two axial leads are functionally identical and interchangeable. There is no anode or cathode designation; the device clamps symmetrically for both positive and negative transients. This eliminates orientation concerns during assembly and simplifies design reuse across differential or AC-coupled signal paths.
How does the SA10CA's 500 W rating compare to similar DO-204AC TVS diodes?
The SA10CA's 500 W peak pulse power rating matches the industry-standard benchmark for DO-204AC-packaged TVS diodes and aligns precisely with Littelfuse's TransZorb™ specification. Competing parts such as P6KE10CA also claim 600 W, but actual validated performance at elevated temperatures shows SA10CA maintains tighter VC consistency and lower thermal resistance due to its optimized glass-passivated junction and lead-frame geometry.
Can the SA10CA be used in parallel to increase surge current handling?
Parallel use of SA10CA devices is not recommended without external current-sharing resistors or matched VBR bins, as minor parametric variations between units can cause uneven current division and premature failure of one device. For higher surge capability, select a single higher-rated part (e.g., SA15CA or SA24CA) or consult Littelfuse's application note AN949 for validated multi-device configurations with balancing networks.
SA10CA/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 29.4A
- 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)
SA10CA/54 FAQ
1.How can I place an order for SA10CA/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA10CA/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 SA10CA/54 reliable?
The price and inventory of SA10CA/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA10CA/54 is usually 5 days.
3.What payment methods are accepted for SA10CA/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA10CA/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA10CA/54?
SA10CA/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA10CA/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 SA10CA/54?
For technical support, including SA10CA/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA10CA/54 requirements.
6.How does Aetrix verify that SA10CA/54 is sourced from the original manufacturer or authorized distributors?
All SA10CA/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 SA10CA/54 meets industry standards.
7.What is the process for return or replacement of SA10CA/54?
All SA10CA/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA10CA/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 SA10CA/54 part is unused and in its original packaging.
Return procedure for SA10CA/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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