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Taiwan Semiconductor Corporation SA64CA
- Part No.:
- SA64CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA64CA.pdf
- Description:
- TVS DIODE 64VWM 103VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,418
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Product details
Overview
SA64CA 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 64V working stand-off voltage (VWM), 71.1–78.6V breakdown voltage (VBR), and 103V maximum clamping voltage (VC) at 5.0A peak pulse current-designed for ESD and electrical fast transient protection in automotive lighting and power supply inputs.
For engineers reviewing the SA64CA datasheet, SA64CA pinout, SA64CA application, or SA64CA equivalent, this device is evaluated for bidirectional surge immunity in 12V/24V automotive subsystems, industrial I/O protection, and DC power rail transient suppression where low clamping voltage and sub-5ns response time are critical selection criteria.
Technical Context
The SA64CA operates as a bidirectional avalanche diode, exhibiting symmetrical VBR min/max of 71.1V and 78.6V at 1mA test current, with clamping action triggered within 5.0ns (bidirectional mode). Its 103V VC at 5.0A IPPM ensures robust overvoltage limiting during 10/1000μs transients.
It supports continuous operation from −55°C to +175°C junction temperature, features <1μA reverse leakage at 64V, and meets AEC-Q101 qualification when ordered with "H" suffix-though SA64CA itself is the standard non-AEC variant per ordering code conventions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous DC or RMS voltage the device blocks without clamping |
| VBR (min/max) | 71.1 / 78.6 V @ 1 mA - Ensures reliable avalanche initiation across process variation and temperature |
| VC @ IPPM | 103 V @ 5.0 A - Limits downstream voltage to safe levels during 10/1000μs surge events |
| PPK | 500 W - Sustains single high-energy transients common in automotive load dump and ISO 7637-2 pulses |
| IR @ VWM | <1 μA - Minimizes standby power loss and avoids false triggering in high-impedance circuits |
| Response Time | 5.0 ns (bidirectional) - Fast enough to protect against EFT bursts and contact ESD per IEC 61000-4-4/-2 |
| TJ max | +175 °C - Enables placement near hot components (e.g., power MOSFETs, LED drivers) without derating |
Pinout & Package
SA64CA is housed in a DO-204AC (DO-15) axial-leaded package with cathode band marking omitted-consistent with bidirectional construction. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Surge current entry (either polarity) | Functions as cathode under positive transient; no fixed polarity-symmetrical conduction |
| Cathode (Lead 2) | Surge current return (either polarity) | Functions as anode under negative transient; terminal assignment irrelevant for layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating DC lines without polarity concerns |
| 500W 10/1000μs rating | Meets ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 3 surge requirements |
| 103V clamping at 5A | Provides ≥20% margin below typical 125V automotive system withstand limits |
| <1μA leakage at 64V | Prevents signal distortion or bias shift in high-gain analog front-ends and sensor interfaces |
| DO-204AC mechanical robustness | Supports manual assembly and wave soldering; UL 94V-0 molding compound resists flame propagation |
Applications
| Automotive Lighting Modules | Industrial PLC Digital Inputs |
|---|---|
Use Scenario: Protecting LED driver ICs and CAN transceivers from load dump and jump-start surges in headlamp control units. IC Role / Device Role: Primary bidirectional TVS placed at connector interface before EMI filter and LDO. Use Value: Clamps transients to ≤103V, preserving 100V-rated input capacitors and avoiding latch-up in 5V logic rails. | Use Scenario: Safeguarding 24V digital input optocouplers from inductive kickback in solenoid-controlled factory automation systems. IC Role / Device Role: First-line transient absorber on field-side PCB edge, upstream of series resistor and Schmitt trigger. Use Value: Limits voltage excursion to <110V during 1A/50ms coil de-energization, preventing opto-LED degradation. |
| DC Power Supply Inputs | USB-C Power Delivery Ports |
Use Scenario: Secondary overvoltage clamp on 48V telecom power supply outputs subject to backfeed and hot-swap transients. IC Role / Device Role: Parallel-connected TVS across output capacitor bank, coordinated with primary OVP circuitry. Use Value: Absorbs 500W energy spikes without thermal runaway, maintaining output regulation during 100ms surges. | Use Scenario: Bidirectional rail protection on VBUS line of USB-C PD controllers handling up to 48V PPS profiles. IC Role / Device Role: Standoff-clamp device between VBUS and ground, sized to survive repeated ±15kV contact ESD per IEC 61000-4-2. Use Value: Sub-5ns response ensures clamping before PD controller's internal protection activates, reducing fault recovery latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA (Bourns) | Same 64V VWM, DO-214AA package, 600W rating, 110V VC @ 5.4A | Higher clamping voltage; surface-mount only; requires PCB rework for through-hole replacement | Select when board space is constrained and 600W margin is required |
| P6KE68CA (Littelfuse) | 68V VWM, DO-204AC package, 600W rating, 112V VC @ 5.3A | Higher VWM reduces leakage sensitivity but increases risk of false clamping on noisy 64V rails | Select when tighter VWM tolerance is needed and 68V standoff is acceptable |
Compared with SMBJ64CA and P6KE68CA, the SA64CA offers lower clamping voltage (103V vs. ≥110V) in the same through-hole DO-204AC footprint, enabling superior protection margin for 64V systems while maintaining legacy assembly compatibility.
Availability
SA64CA is available at Aetrix Electronics and suitable for automotive lighting modules, industrial PLC digital inputs, and DC power supply inputs requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.
Supply support for SA64CA 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 for automotive, industrial, and consumer markets.
The SA Series was developed specifically for high-reliability transient suppression in harsh environments-emphasizing low clamping voltage, AEC-Q101 readiness, and robust DO-204AC packaging for vibration-prone applications.
FAQ
What is the breakdown voltage range of the SA64CA?
The SA64CA has a guaranteed breakdown voltage (VBR) range of 71.1 V to 78.6 V at 1 mA test current, measured per ANSI/IEEE C62.35. This symmetric bidirectional specification ensures consistent clamping behavior regardless of transient polarity, and the 7.5 V spread accommodates manufacturing tolerances while maintaining design margin for 64 V nominal systems.
Is the SA64CA unidirectional or bidirectional?
The SA64CA is a bidirectional TVS diode, indicated by the "CA" suffix per Taiwan Semiconductor's naming convention. It provides symmetrical clamping in both polarities-no cathode band marking is present, and either lead may serve as anode or cathode depending on transient direction. This eliminates polarity-checking during assembly and simplifies layout for AC or floating DC lines.
What is the maximum clamping voltage of the SA64CA at rated surge current?
The SA64CA exhibits a maximum clamping voltage (VC) of 103 V at 5.0 A peak pulse current (IPPM), tested with the standard 10/1000 μs waveform. This value represents the worst-case voltage seen downstream during surge events and is critical for ensuring protected ICs remain within their absolute maximum ratings-especially for 100 V-tolerant automotive interface ICs.
Does the SA64CA meet AEC-Q101 qualification?
The SA64CA is not AEC-Q101 qualified by default; it is the standard industrial-grade variant. AEC-Q101 qualification is available only on parts ordered with the "H" suffix (e.g., SA64CAH). The SA64CA shares identical electrical specs and DO-204AC packaging but lacks the extended reliability testing (temperature cycling, HTRB, etc.) required for automotive under-hood deployment.
What is the junction temperature limit for continuous operation of the SA64CA?
The SA64CA has a maximum operating junction temperature (TJ) of +175 °C and a storage temperature range of −55 °C to +175 °C. This wide range allows direct mounting near heat sources such as power inductors or MOSFETs in LED drivers and motor controls, provided PCB copper area and airflow meet thermal dissipation requirements per the pulse derating curve in the SA Series datasheet.
SA64CA 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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5A
- 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)
SA64CA FAQ
1.How can I place an order for SA64CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SA64CA 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 SA64CA reliable?
The price and inventory of SA64CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA64CA is usually 5 days.
3.What payment methods are accepted for SA64CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA64CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA64CA?
SA64CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA64CA 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 SA64CA?
For technical support, including SA64CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA64CA requirements.
6.How does Aetrix verify that SA64CA is sourced from the original manufacturer or authorized distributors?
All SA64CA 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 SA64CA meets industry standards.
7.What is the process for return or replacement of SA64CA?
All SA64CA units undergo pre-shipment inspection (PSI). If there is an issue with SA64CA, 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 SA64CA part is unused and in its original packaging.
Return procedure for SA64CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA64CA Tags
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