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Taiwan Semiconductor Corporation SA17CA
- Part No.:
- SA17CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA17CA.pdf
- Description:
- TVS DIODE 17VWM 27.7VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,574
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Product details
Overview
SA17CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, with 17V working stand-off voltage (VWM), 18.9–23.1V breakdown voltage (VBR), and 30.5V maximum clamping voltage (VC) at 17A peak pulse current - designed for ESD and electrical fast transient protection in automotive lighting and power supply interfaces.
For engineers reviewing the SA17CA datasheet, SA17CA pinout, SA17CA application, or SA17CA equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, AEC-Q101 qualification status, DO-15 mechanical data, and direct alternative part comparisons - all confirmed from Taiwan Semiconductor's official SA Series documentation (Version L2105).
Technical Context
The SA17CA is a silicon avalanche diode engineered for bidirectional transient suppression, meeting IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity requirements. Its symmetrical VBR min/max (18.9–23.1V) and VC = 30.5V @ IPPM = 17A confirm balanced clamping in both polarities.
It operates across –55°C to +175°C junction temperature, supports 70A non-repetitive forward surge (IFSM), and exhibits <1μA reverse leakage at VWM = 17V - enabling robust protection in high-reliability automotive and industrial control circuits without degrading signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe interface voltage margin. |
| VBR @ IT=1mA | 18.9–23.1 V - Breakdown threshold range; ensures reliable turn-on during transients above system rail. |
| VC @ IPPM=17A | 30.5 V - Clamped voltage under 10/1000μs surge; limits downstream IC stress to ≤30.5V. |
| PPK | 500 W - Peak pulse power rating per 10/1000μs waveform; validates single-event surge survivability. |
| IR @ VWM | <1 μA - Reverse leakage at 17V; negligible standby current impact on low-power sensor or MCU inputs. |
| TJ max | +175 °C - Maximum junction temperature; supports under-hood automotive placement without derating. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package; compatible with legacy through-hole assembly and automated tape-and-reel handling. |
Pinout & Package
SA17CA is a two-terminal bidirectional TVS diode in DO-204AC (DO-15) package. Polarity is not applicable - terminals are symmetrical and interchangeable. Cathode band marking is omitted per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (reversible) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity; no DC bias dependency. |
| Lead 1 / Lead 2 | Surge current path | Provides low-impedance conduction path during ± transients; optimized for <1ns response to ESD events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JESD22 standards. |
| 500W 10/1000μs surge rating | Withstands high-energy load dump and inductive switching spikes common in 12V vehicle systems. |
| Bidirectional clamping symmetry | Identical VBR and VC performance in both directions - eliminates need for orientation-aware PCB layout. |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for environmentally regulated industrial and automotive production. |
| Low clamping ratio (VC/VBR ≈ 1.3) | Minimizes overvoltage overshoot during fast transients - critical for protecting 3.3V/5V logic interfaces. |
Applications
| Automotive LED Headlamp Driver Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting LED driver ICs from load-dump transients and ISO 7637-2 pulse 5a/b surges in 12V vehicle lighting systems. IC Role / Device Role: Primary bidirectional clamping device placed at input stage of buck controller or linear regulator. Use Value: Limits voltage to ≤30.5V during 500W surges, preventing latch-up or gate oxide damage in MOSFET drivers and op-amps. | Use Scenario: Shielding 24V digital input channels in programmable logic controllers from EFT bursts and field-wiring induced noise. IC Role / Device Role: Front-end transient suppressor before optocoupler or Schmitt-trigger input buffer. Use Value: Sub-1μA leakage preserves input hysteresis thresholds; 175°C TJ rating ensures operation near hot CPU modules. |
| USB-C Power Delivery Interface | Smart Home Sensor Node ESD Hardening |
Use Scenario: Safeguarding CC and VBUS lines in USB-C PD controllers against contact ESD (±8kV air, ±15kV contact per IEC 61000-4-2). IC Role / Device Role: Secondary-level TVS after common-mode choke, targeting differential and common-mode transients. Use Value: 30.5V clamping prevents overvoltage on PD controller VDD pins while maintaining signal integrity up to 3A charging currents. | Use Scenario: Protecting I²C/SPI lines and GPIOs of battery-powered environmental sensors from human-body-model ESD events. IC Role / Device Role: Low-leakage bidirectional clamp on communication bus lines exposed to user-accessible connectors. Use Value: <1μA IR avoids battery drain; DO-15 footprint allows cost-effective through-hole mounting on compact sensor PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ17CA | Same DO-214AC package; VBR = 18.9–23.1V, VC = 27.6V @ 17.3A - lower clamping voltage by 2.9V. | Preferred where tighter clamping margin is required for 3.3V logic rails; slightly higher cost and longer lead time. | Select SMAJ17CA if VC ≤28V is mandatory and DO-214AC SMT layout is acceptable. |
| ON Semiconductor 1.5KE17CA | DO-201AD package; same VWM/VBR/VC specs; 1.5kW rating (10/1000μs) - higher surge capacity but larger footprint. | Suitable for high-surge industrial motor drives; incompatible with DO-15 board space or tape-and-reel automation. | Choose 1.5KE17CA only when >500W surge headroom is needed and board area permits larger case. |
Compared with SMAJ17CA and 1.5KE17CA, SA17CA offers optimal balance of DO-15 compatibility, AEC-Q101 qualification, and 30.5V clamping - making it the preferred choice for cost-sensitive, space-constrained automotive and industrial through-hole designs requiring validated reliability.
Availability
SA17CA is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC input modules, USB-C power delivery interfaces, and smart home sensor nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SA17CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for automotive and industrial markets.
The SA Series was developed specifically for AEC-Q101-compliant transient suppression in 12V/24V automotive subsystems and ruggedized industrial controls - emphasizing low clamping ratio, high-temperature stability, and bidirectional symmetry.
FAQ
What is the clamping voltage of SA17CA under a 10/1000μs surge?
The SA17CA clamps to a maximum of 30.5 V when subjected to a 17 A peak pulse current (IPPM) under the standard 10/1000μs waveform. This value is measured per IEC 61000-4-5 and documented in Taiwan Semiconductor's SA Series datasheet (Version L2105). The clamping voltage directly determines the maximum overvoltage stress imposed on protected downstream circuitry - confirming SA17CA's suitability for safeguarding 24V-rated interface ICs.
Is SA17CA unidirectional or bidirectional?
SA17CA is a bidirectional TVS diode, indicated by the "CA" suffix per Taiwan Semiconductor's ordering convention. It provides symmetrical clamping in both polarities, with identical VBR (18.9–23.1 V) and VC (30.5 V) specifications for positive and negative transients. This eliminates orientation sensitivity during PCB placement and enables protection of AC-coupled or floating signal lines - a key distinction from unidirectional "A"-suffixed variants like SA17A.
Does SA17CA meet AEC-Q101 qualification?
Yes, SA17CA is explicitly listed as AEC-Q101 qualified in the SA Series datasheet (Version L2105, Page 1). It undergoes stress testing per JESD22-A108 for temperature cycling, high-temperature reverse bias (HTRB), and ESD (HBM/MM) - validating its reliability for automotive under-hood and cabin applications. The "H" suffix (e.g., SA17CAH) denotes AEC-Q101 compliance, though SA17CA itself is covered under the qualified family.
What is the maximum junction temperature rating for SA17CA?
The SA17CA has a maximum junction temperature (TJ max) rating of +175°C, as specified in the Absolute Maximum Ratings table of the official datasheet. This high thermal limit enables operation in demanding environments such as engine control units, LED headlamp drivers, and industrial motor drives - where ambient temperatures exceed 125°C and sustained power dissipation must be managed without derating.
What package type does SA17CA use, and is it RoHS compliant?
SA17CA uses the DO-204AC (DO-15) axial leaded package, with pure tin-plated leads solderable per J-STD-002. It is fully RoHS compliant and halogen-free per IEC 61249-2-21 - confirmed in the Mechanical Data and Features sections of the SA Series documentation. The DO-15 form factor supports both manual prototyping and high-volume through-hole assembly, maintaining compatibility with legacy manufacturing infrastructure.
SA17CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- SA
- 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:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 19A
- 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 FAQ
1.How can I place an order for SA17CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SA17CA 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 reliable?
The price and inventory of SA17CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA17CA is usually 5 days.
3.What payment methods are accepted for SA17CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA17CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA17CA?
SA17CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA17CA 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?
For technical support, including SA17CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA17CA requirements.
6.How does Aetrix verify that SA17CA is sourced from the original manufacturer or authorized distributors?
All SA17CA 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 meets industry standards.
7.What is the process for return or replacement of SA17CA?
All SA17CA units undergo pre-shipment inspection (PSI). If there is an issue with SA17CA, 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 part is unused and in its original packaging.
Return procedure for SA17CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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