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Vishay General Semiconductor - Diodes Division SA170CA-E3/54
- Part No.:
- SA170CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA170CA-E3/54.pdf
- Description:
- TVS DIODE 170VWM 275VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
SA170CA-E3/54 from Vishay is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, rated for 170 V standoff voltage, 209 V minimum breakdown voltage at 1 mA, 500 W peak pulse power (10/1000 μs), 275 V maximum clamping voltage at 1.8 A, and -55 °C to +175 °C operating junction temperature. It protects signal lines and power rails in automotive sensor units and industrial control interfaces against inductive switching transients.
For engineers reviewing the SA170CA-E3/54 datasheet, SA170CA-E3/54 pinout, SA170CA-E3/54 application, or SA170CA-E3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-15 mechanical dimensions, clamping behavior under 10/1000 μs surge, and direct alternatives with documented VBR, VC, and IPPM differences.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR (min 189 V, max 209 V at 1 mA) and VC (275 V at 1.8 A) in either direction. Its glass-passivated junction ensures stable leakage (<1.0 μA at 170 V) and low incremental surge resistance, enabling fast response to ESD and lightning-induced surges.
The device complies with AEC-Q101 for automotive use and supports repetitive 0.01% duty cycle pulses. Its thermal design accommodates 175 °C maximum junction temperature and derates linearly above 25 °C ambient, with 3.0 W steady-state power dissipation on an infinite heatsink at 75 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (min/max) | 189 V / 209 V at 1 mA - Ensures reliable conduction onset across production lot; critical for overvoltage trip consistency |
| VC @ IPPM | 275 V at 1.8 A - Clamped voltage during 10/1000 μs transient; determines protected circuit's maximum stress level |
| PPPM | 500 W - Peak surge energy handling capacity; validates robustness against IEC 61000-4-5 Level 4 surges |
| IDR @ VWM | <1.0 μA - Ultra-low leakage preserves signal integrity in high-impedance sensor bias networks |
| TJ Range | -55 °C to +175 °C - Enables deployment in engine bay, powertrain, and industrial motor drive environments |
| AEC-Q101 | Qualified - Confirmed reliability for automotive electronics per stress test requirements (HTOL, TC, HAST, etc.) |
Pinout & Package
DO-15 (DO-204AC) molded epoxy package with matte tin-plated leads; bidirectional polarity has no marking band. Body diameter 3.3–3.5 mm, length ≥25.4 mm, lead length ≥6.15 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts surge current when cathode is negative relative to anode; symmetrical with cathode |
| Cathode | Transient current entry (positive half-cycle) | Conducts surge current when anode is negative relative to cathode; identical clamping performance as anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Stable VBR tolerance and low leakage across temperature and lifetime; eliminates junction corrosion risk |
| 500 W peak pulse power (10/1000 μs) | Withstands 4-pulse-per-minute surge repetition without degradation; meets IEC 61000-4-5 waveform compliance |
| AEC-Q101 qualification | Validated for automotive under-hood and chassis applications including ADAS sensor interfaces and body control modules |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation prevents flame propagation in enclosed enclosures and battery management systems |
| Low incremental clamping resistance | Minimizes VC rise vs. IPPM; ensures predictable voltage limiting even at edge-case surge currents |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control units from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and ground, absorbing transients before they reach downstream ASIC inputs. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V sensor interface ICs by limiting excursion to ≤275 V during 100 V/100 ms load dump events. | Use Scenario: Safeguarding PLC analog input channels connected to 4–20 mA current loops exposed to relay coil flyback and contact arcing. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side signal terminals, shunting surge energy directly to earth or chassis ground. Use Value: Maintains <1.0 μA leakage at 170 V, avoiding measurement drift in precision 16-bit ADC front-ends while clamping 500 W surges. |
| Telecom Line Interface | Power Supply Input Stage |
Use Scenario: Shielding Ethernet PHY magnetics and RS-485 transceiver pins from induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: First-line transient suppressor mounted adjacent to connector, before common-mode chokes and data-line filters. Use Value: Symmetrical bidirectional clamping ensures equal protection on differential pairs without polarity sensitivity or layout constraints. | Use Scenario: Secondary overvoltage protection on DC-DC converter input rails following primary MOV-based AC/DC stage. IC Role / Device Role / Timing Role: Fast-response secondary clamp that activates after slower thermal fuses or varistors, capturing residual ringwave overshoot. Use Value: 275 V clamping voltage provides 15 V margin below typical 28 V automotive supply rail absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | Same VWM (170 V), lower PPPM (600 W), smaller SMB package (3.5 × 4.5 mm), higher IPPM (3.3 A) | Preferred for space-constrained PCBs; requires re-layout due to SMD footprint and different thermal path | Select SMBJ170CA when board area is limited and thermal coupling to copper pour is optimized for SMB thermal performance. |
| 1.5KE170CA | Same VWM (170 V), higher PPPM (1500 W), larger DO-201 package, higher VC (275 V → 291 V), same DO-15 lead pitch but longer body | Better suited for high-energy industrial mains surges; not drop-in due to 5.3 mm body length vs. DO-15's 3.5 mm diameter constraint | Choose 1.5KE170CA only when system-level surge testing exceeds 500 W and mechanical clearance allows larger axial package. |
Compared with SA170CA-E3/54, SMBJ170CA offers higher surge current rating in a compact SMD form but demands PCB redesign, while 1.5KE170CA delivers greater energy handling in a physically incompatible axial package-neither is pin-compatible, but both serve overlapping protection roles with quantifiable trade-offs in size, clamping tightness, and thermal management.
Availability
SA170CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line protection, and DC-DC converter input stages requiring stable component supply across extended temperature ranges and AEC-Q101-compliant sourcing.
Supply support for SA170CA-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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in power management, signal conditioning, and protection devices.
The SAxxCA series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for bidirectional transient suppression in harsh environments-including automotive, industrial automation, and telecom infrastructure-where reliability under repeated surge stress is mandatory.
FAQ
What is the clamping voltage of SA170CA-E3/54 at its rated peak pulse current?
The SA170CA-E3/54 exhibits a maximum clamping voltage (VC) of 275 V when subjected to its peak pulse current (IPPM) of 1.8 A under the standard 10/1000 μs waveform. This value is measured across both polarities due to its bidirectional construction and defines the upper voltage limit imposed on protected circuits during surge events. The SA170CA-E3/54 maintains this clamping performance consistently across its qualified temperature range.
Is SA170CA-E3/54 suitable for automotive applications?
Yes, SA170CA-E3/54 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its -55 °C to +175 °C operating junction temperature range, glass-passivated junction, and DO-15 package with matte tin leads meet automotive reliability and solderability standards. The SA170CA-E3/54 is explicitly listed in Vishay's AEC-Q101 qualified product matrix for transient suppression.
How does the bidirectional nature of SA170CA-E3/54 affect its circuit placement?
The SA170CA-E3/54 has no polarity marking and conducts identically in both directions, allowing placement between any two nodes requiring symmetrical overvoltage protection-such as across differential signal lines or between power and ground without regard to orientation. This eliminates assembly errors and simplifies layout for AC-coupled or floating interfaces. Unlike unidirectional TVS diodes, the SA170CA-E3/54 requires no cathode alignment during placement.
What is the maximum leakage current of SA170CA-E3/54 at its standoff voltage?
At its rated standoff voltage (VWM) of 170 V and ambient temperature of 25 °C, the SA170CA-E3/54 guarantees a maximum reverse leakage current (IDR) of 1.0 μA. This ultra-low leakage preserves signal fidelity in high-impedance circuits such as sensor bias networks and precision analog front-ends. Leakage remains within specification up to the full -55 °C to +175 °C operating range, as confirmed in Vishay's characterization data.
Does SA170CA-E3/54 have UL 94 flammability certification?
Yes, the SA170CA-E3/54 uses a molded epoxy compound certified to UL 94 V-0, meaning it self-extinguishes within 10 seconds after flame removal and produces no flaming drips. This rating is critical for safety-critical applications in enclosed power supplies, battery management systems, and automotive junction boxes where fire propagation must be prevented. The UL 94 V-0 compliance is documented in Vishay's mechanical data section for the DO-15 package.
SA170CA-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):
- 170V
- Voltage - Breakdown (Min):
- 189V
- Voltage - Clamping (Max) @ Ipp:
- 275V
- Current - Peak Pulse (10/1000µs):
- 1.8A
- 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)
SA170CA-E3/54 FAQ
1.How can I place an order for SA170CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA170CA-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 SA170CA-E3/54 reliable?
The price and inventory of SA170CA-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 SA170CA-E3/54 is usually 5 days.
3.What payment methods are accepted for SA170CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA170CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA170CA-E3/54?
SA170CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA170CA-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 SA170CA-E3/54?
For technical support, including SA170CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA170CA-E3/54 requirements.
6.How does Aetrix verify that SA170CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA170CA-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 SA170CA-E3/54 meets industry standards.
7.What is the process for return or replacement of SA170CA-E3/54?
All SA170CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA170CA-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 SA170CA-E3/54 part is unused and in its original packaging.
Return procedure for SA170CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA170CA-E3/54 Tags
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