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Vishay General Semiconductor - Diodes Division SA17CA-E3/54
- Part No.:
- SA17CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA17CA-E3/54.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,603
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Product details
Overview
SA17CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, rated for 17 V standoff voltage (VWM), 19.9–21.9 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 μs), 27.6 V clamping voltage at 18.1 A, and −55 °C to +175 °C operating junction temperature - deployed for surge protection on automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the SA17CA-E3/54 datasheet, SA17CA-E3/54 pinout, SA17CA-E3/54 application, or SA17CA-E3/54 equivalent, this page delivers verified electrical parameters, DO-15 terminal mapping, AEC-Q101 qualification status, clamping behavior under 10/1000 μs transients, and direct alternatives with documented VBR, VC, and IPPM divergence.
Technical Context
The SA17CA-E3/54 operates as a symmetrical avalanche diode, conducting in both directions when reverse voltage exceeds its breakdown threshold of 19.9–21.9 V at 1 mA test current. Its glass-passivated junction enables sub-nanosecond response to ESD and lightning-induced surges.
It sustains 500 W peak pulse power per 10/1000 μs waveform with ≤0.01% duty cycle, exhibits 27.6 V clamping voltage at 18.1 A peak pulse current, and maintains <5 μA reverse leakage at 17 V standoff - meeting AEC-Q101 stress requirements for automotive electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 19.9 V / 21.9 V at 1 mA - defines reliable avalanche onset window for bidirectional clamping |
| VC @ IPPM | 27.6 V at 18.1 A - limits downstream IC voltage during 10/1000 μs surge events |
| PPPM | 500 W - peak transient energy absorption capability under standardized surge waveform |
| IPPM | 18.1 A - maximum non-repetitive surge current it safely clamps without failure |
| TJ range | −55 °C to +175 °C - supports under-hood automotive and industrial ambient environments |
| Leakage @ VWM | <5 μA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
Pinout & Package
SA17CA-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, compliant with J-STD-002 solderability and JESD 201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point in forward bias; symmetric conduction node in bidirectional mode | No polarity marking - identical electrical behavior in either orientation for AC/DC line protection |
| Cathode (unmarked end) | Current exit point in forward bias; symmetric conduction node in bidirectional mode | Terminal symmetry eliminates orientation dependency during PCB placement and simplifies layout |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, low-noise avalanche conduction with <5 μA leakage at rated VWM |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| 500 W peak pulse rating (10/1000 μs) | Clamps IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) without degradation |
| Low incremental clamping resistance | ΔVC/ΔI ≈ 1.5 Ω - minimizes voltage overshoot during fast-rising transients |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed enclosures during fault conditions |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN 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 voltage clamp placed across differential signal pairs or supply rails upstream of interface ICs. Use Value: Limits transient voltage to ≤27.6 V during 18.1 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V automotive microcontrollers. | Use Scenario: Shielding digital input modules in programmable logic controllers from 24 V DC field wiring surges caused by relay coil de-energization or cable ESD. IC Role / Device Role / Timing Role: Standoff protector mounted directly at connector entry point, shunting surge energy to ground before reaching optocoupler or Schmitt trigger inputs. Use Value: Maintains <5 μA leakage at 17 V nominal rail, avoiding false triggering while clamping 500 W transients within 1 ns response time. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding RS-485 transceivers and Ethernet PHYs in base station backhaul equipment exposed to lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: Paired bidirectional TVS on each data line (A/B) referenced to ground, forming a low-inductance surge path. Use Value: Symmetric 19.9–21.9 V VBR ensures balanced clamping on differential signals, preserving common-mode rejection ratio during surge events. | Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers connected to microcontroller GPIOs and Hall-effect sensors. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) clamp across motor terminals or sensor supply lines to absorb inductive kickback. Use Value: Withstands 70 A single-half-sine surge (8.3 ms) and operates up to +175 °C, enabling placement near hot motor drivers without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17CA | Same VWM (17 V), higher PPPM (600 W), SMC package (surface-mount) | Requires PCB re-layout for SMD footprint; better thermal dissipation in high-density designs | Select SMBJ17CA when board space is constrained and automated assembly is used. |
| 1.5KE17CA | Same VWM (17 V), same DO-15 package, but 1500 W PPPM and higher IPPM (87.2 A) | Over-spec'd for most 500 W use cases; larger junction capacitance may affect high-speed signal integrity | Choose 1.5KE17CA only when legacy 1.5 kW surge immunity (IEC 61000-4-5) is mandated. |
Compared with SMBJ17CA and 1.5KE17CA, the SA17CA-E3/54 offers optimal balance of axial-leaded manufacturability, AEC-Q101 compliance, and precise 500 W clamping for cost-sensitive automotive and industrial control nodes - without over-engineering capacitance or footprint.
Availability
SA17CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SA17CA-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, efficiency, and automotive-grade qualification.
The SAxxCA series is designed specifically for bidirectional transient suppression in harsh environments - targeting AEC-Q101-compliant automotive subsystems and industrial control systems where repeatable clamping performance and thermal stability are critical.
FAQ
What is the breakdown voltage range of the SA17CA-E3/54?
The SA17CA-E3/54 has a guaranteed breakdown voltage (VBR) range of 19.9 V to 21.9 V at 1 mA test current, measured in both directions due to its bidirectional construction. This range ensures consistent clamping onset across temperature and manufacturing lot variations, supporting robust design margins for 17 V nominal systems. The SA17CA-E3/54 maintains this specification across its full −55 °C to +175 °C operating junction temperature range.
Is the SA17CA-E3/54 qualified for automotive applications?
Yes, the SA17CA-E3/54 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114. Its DO-15 package with matte tin-plated leads meets J-STD-002 solderability and JESD 201 Class 1A whisker resistance. The SA17CA-E3/54 is explicitly rated for under-hood and ECU-level deployment where reliability under thermal and mechanical stress is mandatory.
What is the clamping voltage of the SA17CA-E3/54 at its rated peak pulse current?
The SA17CA-E3/54 clamps to a maximum of 27.6 V at its rated peak pulse current of 18.1 A (10/1000 μs waveform). This value is measured under standardized surge conditions and represents the upper limit of voltage imposed on protected circuitry during transient events. The SA17CA-E3/54 achieves this clamping performance with low incremental resistance (~1.5 Ω), minimizing overshoot beyond the specified VC.
Does the SA17CA-E3/54 have polarity markings on its DO-15 package?
No, the SA17CA-E3/54 has no polarity markings on its DO-15 package because it is a bidirectional TVS diode. Both terminals are functionally identical - conduction occurs symmetrically in either direction once the breakdown voltage is exceeded. This eliminates orientation concerns during manual or automated assembly and simplifies PCB layout for AC-coupled or differential signal protection.
What is the maximum steady-state power dissipation of the SA17CA-E3/54?
The SA17CA-E3/54 has a maximum steady-state power dissipation (PD) of 3.0 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C. Derating is required above 25 °C ambient, following the curve in Figure 5 of the datasheet. This rating applies to continuous DC or low-frequency operation - not transient suppression, where the 500 W peak pulse rating governs short-duration energy handling. The SA17CA-E3/54's 175 °C max junction temperature supports sustained operation in thermally demanding environments.
SA17CA-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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 18.1A
- 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)
SA17CA-E3/54 FAQ
1.How can I place an order for SA17CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA17CA-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 SA17CA-E3/54 reliable?
The price and inventory of SA17CA-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 SA17CA-E3/54 is usually 5 days.
3.What payment methods are accepted for SA17CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA17CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA17CA-E3/54?
SA17CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA17CA-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 SA17CA-E3/54?
For technical support, including SA17CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA17CA-E3/54 requirements.
6.How does Aetrix verify that SA17CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA17CA-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 SA17CA-E3/54 meets industry standards.
7.What is the process for return or replacement of SA17CA-E3/54?
All SA17CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA17CA-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 SA17CA-E3/54 part is unused and in its original packaging.
Return procedure for SA17CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA17CA-E3/54 Tags
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