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Taiwan Semiconductor Corporation SA30CA
- Part No.:
- SA30CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA30CA.pdf
- Description:
- TVS DIODE 30VWM 64.3VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,855
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Product details
Overview
SA30CA from Taiwan Semiconductor is a bidirectional 500W transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, with 30V working stand-off voltage (VWM), 33.3–40.7V breakdown voltage (VBR), and 53.3V clamping voltage (VC) at 9.8A peak pulse current. It delivers fast response (<5.0ns), low leakage (<1μA @ 30V), and AEC-Q101 qualification for automotive-grade surge protection.
For engineers reviewing the SA30CA datasheet, SA30CA pinout, SA30CA application, or SA30CA equivalent, this page provides verified electrical parameters, bidirectional TVS behavior, DO-15 terminal configuration, automotive EFT/ESD immunity use cases, and direct alternatives with documented clamping and thermal differences.
Technical Context
The SA30CA operates as a bidirectional avalanche diode, symmetrically clamping transients above ±33.3V in both polarities. Its VBR min/max range (33.3–40.7V) and VC of 53.3V @ 9.8A define its overvoltage protection window under 10/1000μs surge conditions.
It supports junction temperatures from –55°C to +175°C, features pure tin-plated leads compliant with J-STD-002, and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance - critical for under-hood automotive and industrial control module deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 33.3 / 40.7 V - guaranteed breakdown threshold range at 1 mA test current |
| VC @ IPPM | 53.3 V - clamped voltage during 9.8 A 10/1000μs surge, defining protected circuit stress level |
| PPK | 500 W - peak pulse power handling per single non-repetitive 10/1000μs waveform |
| IR @ VWM | <1 μA - negligible leakage current at rated stand-off, minimizing standby power loss |
| TJ max | +175 °C - maximum junction temperature enabling operation in high-ambient engine bay environments |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with 0.400 g mass and UL 94V-0 molding compound |
Pinout & Package
SA30CA is a two-terminal bidirectional TVS diode in DO-204AC (DO-15) package. Polarity is not applicable - terminals are symmetrical and interchangeable. Leads are pure tin-plated, solderable per J-STD-002, with cathode band omitted (bidirectional marking).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve identical bidirectional avalanche clamping function; no polarity dependency in layout |
| Lead 1 / Lead 2 | PCB interconnect interface | 0.5 mm diameter tinned copper leads, 9.5 mm length, rated for 70 A IFSM (8.3 ms half-sine) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or differential signals without polarity concerns |
| AEC-Q101 qualified | Validated for automotive applications including powertrain and body electronics per stress test requirements |
| 5.0 ns response time | Clamps ESD/EFT transients before sensitive ICs experience overstress - faster than most microsecond-scale protectors |
| UL 94V-0 molding | Self-extinguishing encapsulant prevents flame propagation in enclosed modules or junction boxes |
| JESD201 Class 2 whisker resistance | Eliminates tin whisker growth risk in long-life automotive systems operating >15 years |
Applications
| Automotive Lighting Systems | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and CAN transceivers from load dump and inductive kickback in headlamp modules. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed at connector entry point to shunt surges before reaching downstream analog/digital circuitry. Use Value: Withstands 500W 10/1000μs pulses and operates up to +175°C, ensuring reliability across engine compartment thermal cycles. | Use Scenario: Safeguarding 24V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring transients. IC Role / Device Role / Timing Role: Standoff-rated (30V) clamping element that remains non-conductive during normal 24V operation but activates within 5ns during >33V spikes. Use Value: Low 1μA leakage avoids false triggering; DO-15 axial form factor enables through-hole mounting on ruggedized PCBs. |
| USB-C Port ESD Protection | Smart Meter Power Supply Input |
Use Scenario: Secondary-level ESD protection on USB-C CC and VCONN lines where primary TVS may be insufficient against contact discharge. IC Role / Device Role / Timing Role: Fast-response (5.0ns) bidirectional clamp limiting voltage excursion to ≤53.3V during ±8kV HBM events. Use Value: Matches USB-C signal integrity requirements with minimal capacitance and no polarity constraints on differential pairs. | Use Scenario: Input-stage surge suppression for 220VAC-derived 12V DC supplies in utility smart meters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-line transient absorber placed after bridge rectifier and before bulk capacitor, rated for repetitive 500W pulses. Use Value: 175°C TJ rating ensures stability during prolonged overvoltage events in sealed meter enclosures with limited airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ30CA | Same DO-214AC package (not DO-15); 53.3V VC @ 9.8A; 30V VWM; RoHS/halogen-free | Surface-mount layout required; higher thermal resistance than axial DO-15 in high-power derating scenarios | Select when board space is constrained and reflow assembly is preferred over through-hole |
| ON Semiconductor 1.5KE30CA | Higher PPK (1500W); DO-201AD package; 53.3V VC @ 28.3A; same VWM/VBR range | Designed for higher-energy surges; larger footprint and higher cost; less suitable for compact automotive modules | Select when system-level surge testing requires >500W margin or legacy 1.5KE footprint compatibility is mandatory |
Compared with SMAJ30CA and 1.5KE30CA, SA30CA offers lower-cost through-hole implementation, superior high-temperature stability (+175°C TJ), and AEC-Q101 qualification - making it optimal for cost-sensitive, thermally demanding automotive and industrial applications where DO-15 mechanical robustness is advantageous.
Availability
SA30CA is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC I/O protection, USB-C port ESD hardening, and smart meter power supply inputs requiring stable component supply across extended temperature and surge stress conditions.
Supply support for SA30CA 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 validation capability.
The SA Series was designed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing bidirectional symmetry, high-temperature operation, and standardized DO-204AC packaging for mechanical durability and manufacturability.
FAQ
What is the clamping voltage of SA30CA and how is it measured?
The SA30CA has a maximum clamping voltage (VC) of 53.3 V, measured at 9.8 A peak pulse current (IPPM) under the standard 10/1000 μs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is guaranteed across the full operating temperature range per TSC's L2105 specification sheet.
Is SA30CA unidirectional or bidirectional, and how does that affect circuit placement?
SA30CA is a bidirectional TVS diode, meaning it clamps transients of either polarity symmetrically - no anode/cathode orientation is required during PCB placement. This eliminates polarity-checking during assembly and simplifies protection of AC-coupled or differential signal paths, unlike unidirectional variants such as SA30A which require correct terminal alignment.
Does SA30CA meet automotive qualification standards?
Yes, SA30CA is AEC-Q101 qualified, as confirmed in the SA Series documentation (Version L2105). This qualification covers stress tests including high-temperature operating life, temperature cycling, and mechanical shock - validating its suitability for automotive powertrain, body control, and lighting modules where reliability under thermal and vibration stress is mandatory.
What is the maximum junction temperature rating for SA30CA?
The SA30CA has a maximum junction temperature (TJ max) of +175°C, enabling reliable operation in high-ambient environments such as engine compartments or sealed industrial enclosures. This rating is supported by its DO-204AC package construction, UL 94V-0 molding compound, and thermal design validated per JEDEC standards in TSC's characterization data.
How does SA30CA compare to SA30A in terms of electrical performance?
SA30CA is bidirectional with symmetric VBR (33.3–40.7 V) and VC (53.3 V), while SA30A is unidirectional with identical VBR/VC values but forward voltage (VF = 3.5 V @ 35 A) and polarity-dependent placement. SA30CA's bidirectional nature makes it suitable for AC or floating nodes; SA30A is reserved for DC rail protection where polarity is fixed and forward conduction must be considered.
SA30CA 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 10.8A
- 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)
SA30CA FAQ
1.How can I place an order for SA30CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SA30CA 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 SA30CA reliable?
The price and inventory of SA30CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA30CA is usually 5 days.
3.What payment methods are accepted for SA30CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA30CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA30CA?
SA30CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA30CA 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 SA30CA?
For technical support, including SA30CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA30CA requirements.
6.How does Aetrix verify that SA30CA is sourced from the original manufacturer or authorized distributors?
All SA30CA 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 SA30CA meets industry standards.
7.What is the process for return or replacement of SA30CA?
All SA30CA units undergo pre-shipment inspection (PSI). If there is an issue with SA30CA, 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 SA30CA part is unused and in its original packaging.
Return procedure for SA30CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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