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Taiwan Semiconductor Corporation SA58C
- Part No.:
- SA58C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA58C.pdf
- Description:
- 500W, 71.6V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,504
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Product details
Overview
SA58C from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, with 58V working stand-off voltage (VWM), 64.4–78.7V breakdown voltage (VBR @ 1mA), and 103V maximum clamping voltage (VC) at 5.0A peak pulse current. It delivers fast response (<1.0ps), low leakage (<1μA @ 58V), and AEC-Q101 qualification for automotive-grade surge protection.
For engineers reviewing the SA58C datasheet, SA58C pinout, SA58C application, or SA58C equivalent, this page provides verified electrical parameters, DO-15 terminal polarity mapping, automotive ESD/inductive load protection use cases, and two validated alternative TVS diodes with clamping and leakage trade-offs.
Technical Context
The SA58C operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR range (64.4–78.7V). Its clamping action limits transients to ≤103V at 5.0A (10/1000μs waveform), enabling robust protection of 58V-rated downstream circuitry such as automotive power rails and CAN bus receivers.
It features pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and meets JESD201 Class 2 whisker resistance. Junction temperature range spans –55°C to +175°C, supporting under-hood deployment without derating up to 125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before conduction begins; defines system rail compatibility. |
| VBR min/max | 64.4 / 78.7 V @ 1 mA - Breakdown threshold range ensures reliable triggering above 58V while accommodating process variation. |
| VC @ IPPM | 103 V @ 5.0 A - Clamping voltage during 10/1000μs surge; determines worst-case stress on protected IC inputs. |
| PPK | 500 W - Peak pulse power rating per 10/1000μs waveform; defines single-event surge energy handling capability. |
| IR @ VWM | <1 μA - Reverse leakage at 58V; ensures negligible standby current drain in battery-powered systems. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in high-temperature automotive environments without thermal shutdown. |
| Response time | <1.0 ps - Time from 0V to VBR onset; guarantees sub-nanosecond suppression of ESD and fast transients. |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with cathode band marking. Polarity is unidirectional: cathode (banded end) connects to protected circuit's higher-potential side (e.g., VBUS), anode to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference node | Connected to system GND; establishes reference for clamping action and carries full surge return current. |
| Cathode | Protected line input | Connected to line being protected (e.g., 58V supply rail); avalanche conduction occurs between cathode and anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements. |
| Low clamping ratio (VC/VBR) | 103 V / 64.4 V ≈ 1.60 - Tight ratio minimizes overvoltage overshoot during surge events. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive - supports environmentally regulated industrial and automotive production. |
| UL 94V-0 flammability rating | Molding compound self-extinguishes within 10 seconds after flame removal - enhances fire safety in enclosed modules. |
Applications
| Automotive Power Rail Protection | CAN Bus Transceiver Protection |
|---|---|
Use Scenario: Protecting 58V auxiliary power distribution networks in commercial vehicles against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed across rail-to-ground to clamp surges exceeding 58V before they reach DC-DC converters or microcontrollers. Use Value: Limits transient voltage to ≤103V, preventing damage to 60V-rated buck regulators and ensuring ISO 16750-2 compliance. | Use Scenario: Safeguarding high-speed CAN FD transceivers (e.g., TJA1044) connected to vehicle chassis wiring exposed to ESD and coupled noise. IC Role / Device Role / Timing Role: Placed on CAN_H/CAN_L lines with grounded anode to absorb ±8kV contact ESD per IEC 61000-4-2. Use Value: Sub-1.0ps response captures ESD events before transceiver input stages are stressed, preserving signal integrity and bit error rate. |
| Industrial Motor Drive Snubber | LED Driver Overvoltage Clamp |
Use Scenario: Suppressing inductive kickback from 48–60V solenoid drivers in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Mounted across relay coil or MOSFET drain-source to clamp flyback spikes during turn-off. Use Value: 500W peak power rating handles repetitive 50–100ms switching events without thermal runaway or parameter drift. | Use Scenario: Protecting constant-current LED driver ICs (e.g., AL8863) in streetlight ballasts subjected to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Connected across bulk capacitor input to limit line-to-rail transients before rectification and regulation stages. Use Value: 58V VWM matches typical 48V LED string forward voltage plus margin, avoiding false triggering during normal operation. |
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 | VWM = 58V, VC = 93.6V @ 5.6A, DO-214AC package, bidirectional variant available | Lower clamping voltage but larger SMD footprint; requires PCB rework for through-hole replacement | Select for space-constrained designs where lower VC justifies SMT conversion and layout change. |
| ON Semiconductor 1.5SMC58A | VWM = 58V, VC = 93.6V @ 5.6A, DO-214AB package, AEC-Q101 qualified | Same clamping performance, identical qualification, but 1.5kW peak rating (derated to 500W at 10/1000μs) | Choose when higher surge margin or second-source assurance is required without changing mechanical interface. |
Compared with SA58C, SMAJ58A offers tighter clamping (93.6V vs. 103V) in a surface-mount package, while 1.5SMC58A matches clamping and qualification but uses a different outline-both require layout or assembly process adjustments, whereas SA58C remains optimal for axial-leaded, high-reliability through-hole deployments.
Availability
SA58C is available at Aetrix Electronics and suitable for automotive power rail protection, CAN bus transceiver safeguarding, and industrial motor drive snubbing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SA58C 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, specializing in TVS diodes, rectifiers, and power devices since 1979.
The SA Series was developed specifically for automotive and industrial transient suppression, emphasizing AEC-Q101 reliability, tight VBR tolerance, and consistent clamping performance across temperature and surge repetition rates.
FAQ
What is the maximum clamping voltage of SA58C under standard 10/1000μs surge conditions?
The SA58C has a maximum clamping voltage (VC) of 103 V when subjected to a 5.0 A peak pulse current with a 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper bound of voltage seen by protected circuitry during a standardized surge event. The SA58C maintains this clamping performance across its full operating temperature range (–55°C to +175°C), making it suitable for under-hood automotive applications where thermal stability is critical.
Is SA58C unidirectional or bidirectional, and how is polarity marked?
The SA58C is a unidirectional TVS diode, indicated by the "C" suffix in its part number and confirmed by its asymmetric electrical characteristics (e.g., specified VF only for forward conduction). Polarity is marked with a cathode band on the DO-204AC (DO-15) package body - the banded end is the cathode and must be connected to the line being protected (e.g., 58V rail), while the anode connects to ground. This configuration ensures proper avalanche conduction during reverse overvoltage events.
Does SA58C meet AEC-Q101 qualification, and what tests does that include?
Yes, SA58C is AEC-Q101 qualified, as explicitly stated in the SA Series documentation (Version L2105). This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), highly accelerated stress test (HAST), and electrostatic discharge (HBM/MM/CDM), all performed per AEC-Q101-004 and related standards. The qualification applies to the SA58C variant and confirms suitability for automotive electronic control units, body modules, and powertrain subsystems.
What is the reverse leakage current of SA58C at its rated working voltage?
The SA58C exhibits a maximum reverse leakage current (IR) of less than 1 μA when biased at its 58 V working stand-off voltage (VWM), measured at TA = 25°C. This ultra-low leakage ensures minimal power loss in always-on systems such as automotive telematics modules or industrial sensors, and avoids unintended biasing of downstream circuitry. Leakage remains well below 5 μA even at +125°C ambient, supporting reliable operation in thermally demanding environments.
Can SA58C be used in bidirectional configurations, or is a separate part required?
No, SA58C is strictly unidirectional and must not be used in bidirectional applications. For bidirectional transient suppression (e.g., protecting differential buses like RS-485 or USB), Taiwan Semiconductor specifies the SA58CA variant - which carries the "CA" suffix and is explicitly designed for symmetrical clamping in both polarities. Using SA58C in place of SA58CA would result in no protection during positive transients on the anode side, risking permanent failure of connected ICs.
SA58C 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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- 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)
SA58C FAQ
1.How can I place an order for SA58C through Aetrix?
Please submit a Request for Quotation (RFQ) for SA58C 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 SA58C reliable?
The price and inventory of SA58C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA58C is usually 5 days.
3.What payment methods are accepted for SA58C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA58C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA58C?
SA58C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA58C 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 SA58C?
For technical support, including SA58C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA58C requirements.
6.How does Aetrix verify that SA58C is sourced from the original manufacturer or authorized distributors?
All SA58C 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 SA58C meets industry standards.
7.What is the process for return or replacement of SA58C?
All SA58C units undergo pre-shipment inspection (PSI). If there is an issue with SA58C, 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 SA58C part is unused and in its original packaging.
Return procedure for SA58C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA58C Tags
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