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Taiwan Semiconductor Corporation SA6.5C
- Part No.:
- SA6.5C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA6.5C.pdf
- Description:
- 500W, 8V, 10%, BIDIRECTIONAL, TV
- Quantity:
- Payment:
- Shipping:
Inventory:8,254
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Product details
Overview
SA6.5C from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, with 6.5V working stand-off voltage (VWM), 7.22–8.82V breakdown voltage (VBR @ 10mA), and 42.0V clamping voltage (VC) at 400A peak pulse current. It delivers fast response (<1.0ps), low leakage (<1μA @ 10V), and AEC-Q101 qualification for automotive-grade surge protection.
For engineers reviewing the SA6.5C datasheet, SA6.5C pinout, SA6.5C application, or SA6.5C equivalent, this device serves as a primary overvoltage clamp for 5V rail protection in automotive ECUs, LED drivers, and industrial I/O interfaces where sub-10V stand-off and robust 10/1000μs surge handling are required.
Technical Context
The SA6.5C operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR range (7.22–8.82V). Its low dynamic impedance enables rapid clamping to ≤42.0V under 400A 10/1000μs transients, limiting energy dissipation in protected downstream circuitry.
Designed for operation across –55°C to +175°C junction temperature, it features pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and JESD201 Class 2 whisker resistance - confirming suitability for high-reliability automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse voltage before conduction; sets minimum system operating margin above 5V nominal rails. |
| VBR @ 10mA | 7.22–8.82 V - Breakdown onset range; ensures reliable triggering without premature conduction during normal 5V supply ripple. |
| VC @ IPPM | 42.0 V - Clamped voltage at 400A peak pulse; defines worst-case stress on downstream ICs during ISO 7637-2 Pulse 1/2a/5a events. |
| PPK | 500 W - Peak pulse power rating at 10/1000μs waveform; validates compliance with IEC 61000-4-5 Level 4 surge immunity. |
| IR @ VWM | <1 μA - Reverse leakage at 6.5V; negligible loading on low-power 5V sensor or logic circuits. |
| TJ max | +175 °C - Maximum junction temperature; supports under-hood automotive placement without derating in sealed enclosures. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking. Dimensions per Taiwan Semiconductor Package Outline Drawing (Version L2105): overall length 4.2–5.2 mm, body diameter 2.3–2.7 mm, lead diameter 0.5–0.6 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transient events. |
| Cathode | Reverse-biased terminal / Clamp node | Connected to protected line (e.g., 5V rail); conducts avalanche current when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors per stress test requirements. |
| Clamping ratio VC/VBR | ≤5.8× (42.0V / 7.22V) - Confirms low dynamic impedance for effective energy diversion without excessive voltage overshoot. |
| Response time | <1.0 ps - Enables suppression of ESD and fast transients before sensitive CMOS inputs reach damage thresholds. |
| RoHS & halogen-free | Compliant with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - meets environmental requirements for global OEM production. |
Applications
| Automotive Power Rail Protection | LED Driver Overvoltage Clamp |
|---|---|
Use Scenario: Protecting 5V microcontroller power input in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between 5V rail and chassis ground to shunt surge energy away from MCU VDD pins. Use Value: Limits clamped voltage to 42.0V during 400A transients, preserving MCU functionality without requiring oversized input capacitors or additional filtering. |
Use Scenario: Safeguarding constant-current LED driver ICs against inductive kickback from relay-controlled lighting loads. IC Role / Device Role / Timing Role: Standoff-clamp device connected across driver output to absorb flyback energy during switch-off transitions. Use Value: Prevents driver latch-up or gate oxide failure by clamping transients to ≤42.0V within <1.0ps, enabling use of cost-effective 50V-rated MOSFETs. |
| Industrial Sensor Interface Protection | USB Port ESD Suppression |
Use Scenario: Shielding analog sensor signal lines (e.g., 5V-output thermistors) from EFT bursts in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Low-leakage (≤1μA) TVS placed at connector entry point to divert fast transients before reaching ADC front-end. Use Value: Maintains signal integrity with no DC loading error while suppressing 5kV EFT (IEC 61000-4-4) via sub-ns response and stable VBR tolerance. |
Use Scenario: Adding secondary-level ESD protection on VBUS line of USB 2.0 host ports in embedded medical devices. IC Role / Device Role / Timing Role: Standoff-limited clamp (6.5V VWM) ensuring no interference with 4.75–5.25V USB spec while absorbing ±15kV contact discharge. Use Value: Achieves IEC 61000-4-2 Level 4 compliance without affecting USB enumeration or voltage regulation stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5A | Same DO-214AC package; 6.5V VWM, but bidirectional configuration and higher VC (11.2V @ 400A). | Requires polarity-insensitive placement; unsuitable for unidirectional-only 5V rail clamping where forward conduction must be blocked. | Select SA6.5C when unidirectional behavior and lowest possible clamping voltage (42.0V) are mandatory for 5V system protection. |
| P6KE6.8A | DO-15 package, 6.8V VWM, 500W rating, but slower response (~1ns) and higher VC (12.3V @ 38.2A). | Limited to lower-energy transients due to reduced IPPM (38.2A vs. SA6.5C's 400A); not rated for AEC-Q101. | Choose SA6.5C for automotive or high-surge industrial use where AEC-Q101 validation, 400A capability, and sub-ns response are required. |
Compared with SMAJ6.5A and P6KE6.8A, the SA6.5C provides superior 5V-rail protection through its unidirectional architecture, lowest clamping voltage (42.0V), AEC-Q101 qualification, and 10× higher peak pulse current rating - making it optimal for demanding automotive and industrial surge environments.
Availability
SA6.5C is available at Aetrix Electronics and suitable for automotive ECU design, LED lighting systems, industrial sensor interfaces, and USB power port protection requiring stable component supply and long-term lifecycle support.
Supply support for SA6.5C 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 qualification capabilities.
The SA Series was developed specifically for high-reliability transient suppression in automotive and industrial applications, emphasizing low clamping voltage, fast response, and extended temperature operation up to +175°C.
FAQ
What is the polarity configuration of the SA6.5C?
The SA6.5C is a unidirectional TVS diode, with cathode marked by a band on the DO-204AC (DO-15) package. It conducts only in reverse bias above VBR and blocks forward current - essential for protecting 5V supply rails where forward conduction must be avoided. This distinguishes SA6.5C from bidirectional variants like SA6.5CA.
Does the SA6.5C meet AEC-Q101 qualification?
Yes, the SA6.5C is AEC-Q101 qualified per the SA Series documentation (Version L2105), having passed stress tests including high-temperature operating life, temperature cycling, and ESD. This certification confirms its suitability for automotive powertrain, chassis, and body electronics applications.
What is the maximum clamping voltage of the SA6.5C under surge conditions?
The SA6.5C has a maximum clamping voltage (VC) of 42.0 V at 400 A peak pulse current (10/1000μs waveform), as specified in the "Maximum Ratings and Electrical Characteristics" table. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can the SA6.5C be used in place of the SA6.5A variant?
No - SA6.5C and SA6.5A are distinct variants: SA6.5C is unidirectional with 400A IPPM and 42.0V VC, while SA6.5A is also unidirectional but has higher clamping voltage (46.0V) and lower IPPM (400A same, but different test condition interpretation). Their VBR ranges differ (SA6.5C: 7.22–8.82V; SA6.5A: 7.22–7.98V), so direct substitution requires verification of clamping margin and leakage.
What packaging options are available for the SA6.5C?
The SA6.5C is supplied in DO-204AC (DO-15) package with two standard packing formats: 3,500 units per tape-and-reel (ordering code SA6.5C) and 1,500 units per ammo box (ordering code SA6.5CA0G). Both options feature pure tin-plated leads and comply with J-STD-002 solderability standards.
SA6.5C 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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 42A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA6.5C FAQ
1.How can I place an order for SA6.5C through Aetrix?
Please submit a Request for Quotation (RFQ) for SA6.5C 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 SA6.5C reliable?
The price and inventory of SA6.5C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA6.5C is usually 5 days.
3.What payment methods are accepted for SA6.5C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA6.5C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA6.5C?
SA6.5C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA6.5C 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 SA6.5C?
For technical support, including SA6.5C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA6.5C requirements.
6.How does Aetrix verify that SA6.5C is sourced from the original manufacturer or authorized distributors?
All SA6.5C 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 SA6.5C meets industry standards.
7.What is the process for return or replacement of SA6.5C?
All SA6.5C units undergo pre-shipment inspection (PSI). If there is an issue with SA6.5C, 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 SA6.5C part is unused and in its original packaging.
Return procedure for SA6.5C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA6.5C Tags
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