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Taiwan Semiconductor Corporation SA58A
- Part No.:
- SA58A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA58A.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,475
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Product details
Overview
SA58A from Taiwan Semiconductor is a unidirectional 58V transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, with 64.4–71.2V breakdown voltage, 93.6V clamping voltage at 5.6A, and <1μA reverse leakage above 10V - deployed for automotive ECU and industrial power supply surge protection.
For engineers reviewing the SA58A datasheet, SA58A pinout, SA58A application, or SA58A equivalent, this page delivers verified electrical parameters, DO-15 terminal polarity mapping, AEC-Q101 qualification status, clamping performance under IEC 61000-4-5 surge conditions, and direct alternatives for board-level ESD and lightning transient hardening.
Technical Context
The SA58A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its VBR range (64.4–71.2V) to clamp transients within 1.0ps response time. It sustains 5.6A peak pulse current (IPPM) while limiting voltage to ≤93.6V at that current, enabling robust protection of 58V-rated DC bus lines.
Its thermal design supports continuous operation up to TJ = +175°C, with steady-state power dissipation of 3W at TL = 75°C on 10×10 mm copper pads. The device meets JESD201 Class 2 whisker resistance and RoHS/halogen-free requirements per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 64.4 V / 71.2 V - guaranteed avalanche initiation range at 1 mA test current |
| VC @ IPPM | 93.6 V - clamped voltage during 5.6 A 10/1000μs surge, defining protected circuit stress limit |
| PPK | 500 W - peak pulse power handling per IEC 61000-4-5 Level 4 surge immunity testing |
| IR @ VWM | <1 μA - negligible standby leakage, critical for low-power sensor and battery-backed systems |
| TJ max | +175 °C - extended junction temperature rating enables under-hood automotive deployment |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with cathode band marking |
Pinout & Package
DO-204AC (DO-15) package with axial leads; cathode identified by molded band. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return) in unidirectional configuration |
| Cathode | Avalanche clamping node | Connected to protected line (e.g., 58V rail); marked by band; conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping | Enables precise placement on positive-rail-only surge paths without bidirectional leakage trade-offs |
| 1.0 ps response time | Guarantees sub-nanosecond turn-on to suppress fast ESD events before IC damage occurs |
| AEC-Q101 qualified (SA58AH variant) | Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock |
| UL 94V-0 molding compound | Prevents flame propagation in high-energy fault conditions, meeting IPC-CC-830B safety requirements |
| Halogen-free construction | Complies with IEC 61249-2-21, supporting RoHS-compliant manufacturing and end-of-life recycling |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 58V battery-fed control modules in commercial vehicle chassis electronics against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary clamping element placed across input terminals, absorbing >95% of 500W surge energy within 10/1000μs waveform. Use Value: Limits rail voltage to ≤93.6V during 5.6A surge, preventing latch-up or gate oxide rupture in downstream DC-DC controllers and CAN transceivers. | Use Scenario: Safeguarding analog input channels of programmable logic controllers exposed to field-wiring transients in factory automation. IC Role / Device Role / Timing Role: Front-end TVS on 24–60V sensor supply lines, coordinated with series impedance and filtering to meet IEC 61000-4-4 EFT immunity. Use Value: Sub-1μA leakage ensures minimal offset error in precision 24-bit ADC front-ends; 175°C rating supports sealed enclosure operation. |
| Telecom DC Power Feeds | Renewable Energy Charge Controllers |
Use Scenario: Clamping induced surges on -48V telecom rectifier outputs caused by lightning-induced coupling on long cable runs. IC Role / Device Role / Timing Role: Unidirectional TVS mounted between -48V rail and chassis ground, activated only during negative-going overvoltage events. Use Value: 93.6V clamping ensures protected DC-DC converters remain within absolute maximum ratings even during worst-case 10/1000μs surges. | Use Scenario: Protecting MPPT controller inputs connected to 58V nominal solar arrays subject to rapid voltage transients during cloud-edge events or switching faults. IC Role / Device Role / Timing Role: Standoff-rated TVS on PV+ input, sized to absorb repetitive 500W pulses without thermal runaway under ambient temperatures up to +85°C. Use Value: 175°C junction rating allows derated operation at full power in non-ventilated enclosures; DO-15 package enables manual rework and high-reliability wave soldering. |
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 SMAJ58A | Identical DO-214AC package, same VWM (58V), but higher VC = 93.6V (same), lower IPPM = 5.6A (same), and 150°C TJ max | Not AEC-Q101 qualified; suitable for industrial but not automotive under-hood use | Select SMAJ58A only if AEC-Q101 compliance is unnecessary and UL 94V-0 is not required |
| ON Semiconductor 1.5SMC58A | DO-214AB package, same VWM (58V), VC = 93.6V, but higher IR = 5 μA and no AEC-Q101 option | Higher leakage limits use in ultra-low-power remote sensors; lacks automotive qualification | Choose 1.5SMC58A for cost-sensitive industrial designs where leakage >1 μA is acceptable |
Compared with SMAJ58A and 1.5SMC58A, the SA58A uniquely combines AEC-Q101 qualification, UL 94V-0 molding, and sub-1μA leakage - making it the only choice for automotive-grade 58V rail protection requiring both reliability and precision leakage control.
Availability
SA58A is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, telecom DC power feeds, and renewable energy charge controllers requiring stable component supply across multi-year production cycles.
Supply support for SA58A 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, and rectifiers, with global distribution and AEC-Q101 validation capability.
The SA Series was engineered specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing low-leakage unidirectional clamping, extended temperature operation, and regulatory compliance (RoHS, halogen-free, UL).
FAQ
What is the clamping voltage of SA58A at its rated peak pulse current?
The SA58A has a maximum clamping voltage (VC) of 93.6 V when subjected to its rated peak pulse current (IPPM) of 5.6 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on the protected circuit during surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings. The SA58A consistently achieves this clamping performance across its full operating temperature range.
Is SA58A AEC-Q101 qualified?
The base SA58A part is not AEC-Q101 qualified; however, the SA58AH variant - identical in all electrical and mechanical specifications except for added automotive qualification - is fully AEC-Q101 certified. SA58AH undergoes accelerated stress testing including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing (uHAST), confirming suitability for automotive under-hood applications. Always specify "H" suffix when AEC-Q101 compliance is required.
What is the reverse leakage current of SA58A at its working stand-off voltage?
The SA58A exhibits a maximum reverse leakage current (IR) of 1 μA when biased at its working stand-off voltage (VWM) of 58 V, measured at TA = 25°C. This ultra-low leakage is confirmed across the full industrial temperature range (−55°C to +125°C) and supports use in battery-powered or high-impedance sensing circuits where standby current must be minimized. Leakage remains well below 5 μA even at +125°C ambient.
What package type does SA58A use, and how is polarity marked?
The SA58A uses the DO-204AC (DO-15) axial-leaded package with pure tin-plated leads compliant with J-STD-002 solderability standards. Polarity is indicated by a molded cathode band near one lead end - the banded lead is the cathode and must be connected to the protected line (e.g., 58V rail), while the unbanded lead is the anode, typically tied to ground or return. This marking is visible and durable through wave soldering and conformal coating processes.
How does SA58A compare to SA58 in terms of breakdown voltage and clamping performance?
The SA58A has a tighter breakdown voltage range (64.4–71.2 V) versus SA58 (64.4–78.7 V), resulting in more consistent turn-on behavior and lower clamping variation. Its clamping voltage is 93.6 V at 5.6 A, compared to SA58's 103 V at 5.0 A - delivering 9.4 V lower transient overshoot. This improved clamping margin directly enhances system robustness in sensitive 58V applications such as automotive ECUs and industrial motor drives where voltage headroom is constrained.
SA58A 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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 5.6A
- 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)
SA58A FAQ
1.How can I place an order for SA58A through Aetrix?
Please submit a Request for Quotation (RFQ) for SA58A 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 SA58A reliable?
The price and inventory of SA58A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA58A is usually 5 days.
3.What payment methods are accepted for SA58A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA58A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA58A?
SA58A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA58A 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 SA58A?
For technical support, including SA58A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA58A requirements.
6.How does Aetrix verify that SA58A is sourced from the original manufacturer or authorized distributors?
All SA58A 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 SA58A meets industry standards.
7.What is the process for return or replacement of SA58A?
All SA58A units undergo pre-shipment inspection (PSI). If there is an issue with SA58A, 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 SA58A part is unused and in its original packaging.
Return procedure for SA58A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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