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Taiwan Semiconductor Corporation SA5.0
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- Part No.:
- SA5.0
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA5.0.pdf
- Description:
- 500W, 6.9V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,925
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Product details
Overview
SA5.0 from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode with 5.0V working stand-off voltage, 6.4–7.3V breakdown voltage at 10mA test current, and 54.0V clamping voltage at 600A peak pulse current. It features sub-1ps response time, <1μA reverse leakage above 10V, and DO-204AC (DO-15) package for automotive lighting surge protection.
For engineers reviewing the SA5.0 datasheet, SA5.0 pinout, SA5.0 application, or SA5.0 equivalent, this page delivers verified electrical parameters, polarity-aware mechanical layout guidance, AEC-Q101 qualification status, and direct alternatives for ESD/inductive-switching transient suppression in 12V automotive subsystems.
Technical Context
The SA5.0 operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 6.4–7.3V VBR range at 10mA. Its low dynamic impedance enables rapid clamping to ≤54.0V under 600A 10/1000μs surges, limiting energy dissipation in protected ICs.
Designed for 12V automotive systems, it sustains 70A non-repetitive forward surge current and operates across –55°C to +175°C junction temperature. The cathode-band-marked DO-204AC package ensures correct PCB orientation during assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse voltage before leakage rises significantly; matches 12V system rail with margin. |
| VBR @ 10mA | 6.4–7.3 V - Breakdown onset range; ensures reliable turn-on before downstream IC damage thresholds. |
| VC @ 600A | 54.0 V - Clamped voltage during worst-case 10/1000μs surge; defines maximum stress on protected load. |
| PPK | 500 W - Peak pulse power handling per single transient; validated per IEC 61000-4-5 Level 4. |
| IPPM | 600 A - Maximum non-repetitive peak pulse current; supports high-energy load-dump transients. |
| Response Time | <1.0 ps - Time from 0V to VBR; enables protection of fast-edge digital interfaces like CAN FD. |
| TJMAX | +175°C - Maximum junction temperature; supports under-hood placement without derating. |
Pinout & Package
SA5.0 uses the DO-204AC (DO-15) axial-leaded package with cathode band marking. 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 | Forward conduction terminal | Connected to ground or low-side return path; carries surge current during clamping. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12V rail); blocks normal operation, avalanches during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Enables precise protection of positive-rail circuits without bidirectional leakage trade-offs. |
| AEC-Q101 qualified variant available (SA5.0H) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
| 500W 10/1000μs surge rating | Meets ISO 7637-2 Pulse 5a/b load-dump immunity requirements for 12V vehicle networks. |
| <1μA reverse leakage @ >10V | Minimizes standby power loss in always-on modules such as body control units and lighting drivers. |
| DO-204AC mechanical robustness | UL 94V-0 molding compound and 0.4g mass support vibration-resistant mounting in engine compartments. |
Applications
| Automotive Lighting Driver Protection | 12V Power Rail ESD Suppression |
|---|---|
Use Scenario: Protecting LED driver ICs from load-dump transients and alternator ripple in headlamp modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12V input and ground, clamping surges before they reach the buck controller. Use Value: Limits peak voltage to 54.0V during 600A transients, preventing gate oxide rupture in MOSFET-based drivers. |
Use Scenario: Shielding CAN transceivers and microcontrollers from ESD events on shared 12V supply lines. IC Role / Device Role / Timing Role: Standoff device absorbing ±15kV contact ESD per IEC 61000-4-2, with sub-1ps response preserving signal integrity. Use Value: Maintains <1μA leakage at 5.0V VWM, avoiding false resets or brownouts in always-on ECUs. |
| Inductive Load Switching Protection | Electrical Fast Transient (EFT) Immunity |
Use Scenario: Safeguarding relay driver circuits against flyback voltage spikes generated by solenoid actuation. IC Role / Device Role / Timing Role: Parallel-connected TVS across inductive coil terminals, conducting surge current away from driver output stage. Use Value: Withstands 70A single-half-sine forward surge (8.3ms), enabling direct protection of discrete BJT/MOSFET switches. |
Use Scenario: Enhancing immunity of infotainment power supplies against 5kHz burst noise per IEC 61000-4-4. IC Role / Device Role / Timing Role: Low-impedance shunt element diverting repetitive 5ns–150ns transients on DC rails. Use Value: Delivers consistent 54.0V clamping across 100+ pulses due to stable thermal design and 175°C TJMAX. |
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 SMAJ5.0A | Same DO-214AC package; 5.0V VWM, 6.4–7.0V VBR, 9.2V VC @ 600A - lower clamping voltage but 400W rating. | Preferred where tighter clamping is critical and peak surge energy is ≤400W (e.g., low-power sensor nodes). | Select SMAJ5.0A if board space allows SMA package and clamping voltage must stay below 10V. |
| ON Semiconductor 1.5SMC5.0A | DO-214AB package; 5.0V VWM, 6.4–7.0V VBR, 9.6V VC @ 600A - identical clamping to SA5.0 but higher thermal resistance. | Suitable for industrial controls with less stringent thermal constraints; not AEC-Q101 qualified. | Choose 1.5SMC5.0A for cost-sensitive non-automotive designs requiring same electrical performance in larger SMC outline. |
Compared with SA5.0, SMAJ5.0A offers lower clamping but reduced surge capacity, while 1.5SMC5.0A matches clamping performance but lacks automotive qualification and has inferior thermal dissipation in compact layouts.
Availability
SA5.0 is available at Aetrix Electronics and suitable for automotive lighting, 12V power rail protection, and inductive load switching applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SA5.0 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, serving global automotive, industrial, and consumer markets since 1979.
The SA Series TVS diodes are engineered specifically for automotive-grade transient suppression, emphasizing AEC-Q101 compliance, high-temperature reliability, and precise clamping performance in 12V/24V vehicle electrical systems.
FAQ
What is the polarity configuration of SA5.0?
The SA5.0 is a unidirectional TVS diode with clearly marked cathode band on the DO-204AC package. During normal operation, it blocks reverse voltage up to 5.0V; when transients exceed 6.4–7.3V, it avalanches from cathode to anode, shunting surge current to ground. Correct orientation is essential-reversal renders it ineffective for positive-rail protection. Always verify cathode alignment against schematic symbols and PCB silkscreen in SA5.0 layouts.
Does SA5.0 meet AEC-Q101 qualification?
The base SA5.0 part is not AEC-Q101 qualified; however, the SA5.0H variant-identical electrically but with enhanced process controls and test screening-is fully AEC-Q101 certified. SA5.0H shares the same VWM, VBR, and VC specs but adds temperature cycling, highly accelerated life testing, and ESD validation per automotive standards. For production automotive use, specify SA5.0H-not SA5.0-to ensure compliance.
What is the maximum clamping voltage of SA5.0 under surge conditions?
The SA5.0 clamps to a maximum of 54.0V when subjected to a 600A peak pulse current with 10/1000μs waveform. This value is measured at TA = 25°C and represents the upper limit of voltage seen by downstream circuitry during worst-case transients. At elevated ambient temperatures, derating applies per Fig.2 in the datasheet-e.g., at 85°C, clamping may rise ~5% due to increased junction resistance.
Can SA5.0 be used in bidirectional applications?
No-SA5.0 is strictly unidirectional and unsuitable for bidirectional signal-line protection. For bipolar operation, select SA5.0A (bidirectional variant), which exhibits symmetric breakdown in both directions with same VBR and VC characteristics. Using SA5.0 on AC-coupled or differential lines risks forward conduction during negative half-cycles, leading to overheating or failure. Always match SA5.0 to DC-positive-rail scenarios only.
What is the thermal resistance and power derating behavior of SA5.0?
SA5.0 has a steady-state power dissipation rating of 3W at lead temperature (TL) = 75°C with 9.5mm lead lengths mounted on 10×10mm copper pads. Its thermal resistance from junction-to-lead is approximately 42°C/W. Derating follows Fig.2: above 25°C ambient, peak pulse power declines linearly to zero at 175°C. For sustained surge duty cycles, ensure PCB copper area and airflow prevent TJ from exceeding 175°C-verified via thermal simulation using SA5.0's 0.4g mass and DO-204AC geometry.
SA5.0 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.6V
- Current - Peak Pulse (10/1000µs):
- 54A
- 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)
SA5.0 FAQ
1.How can I place an order for SA5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA5.0 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 SA5.0 reliable?
The price and inventory of SA5.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA5.0 is usually 5 days.
3.What payment methods are accepted for SA5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA5.0?
SA5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA5.0 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 SA5.0?
For technical support, including SA5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA5.0 requirements.
6.How does Aetrix verify that SA5.0 is sourced from the original manufacturer or authorized distributors?
All SA5.0 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 SA5.0 meets industry standards.
7.What is the process for return or replacement of SA5.0?
All SA5.0 units undergo pre-shipment inspection (PSI). If there is an issue with SA5.0, 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 SA5.0 part is unused and in its original packaging.
Return procedure for SA5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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