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Taiwan Semiconductor Corporation SA58AH
- Part No.:
- SA58AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA58AH.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,404
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Product details
Overview
SA58AH from Taiwan Semiconductor is a unidirectional AEC-Q101-qualified transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, 58V working stand-off voltage (VWM), and clamps to ≤103V at 5.0A peak pulse current. It delivers fast response (<1.0ps), low leakage (<1μA @ 58V), and operates from –55°C to +175°C - deployed in automotive power line surge protection.
For engineers reviewing the SA58AH datasheet, SA58AH pinout, SA58AH application, or SA58AH equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, clamping performance under IEC 61000-4-5 surge conditions, thermal derating behavior, and direct alternatives with validated VWM/VC/IPPM trade-offs.
Technical Context
The SA58AH is a unidirectional silicon avalanche diode designed for high-energy transient suppression on DC power rails. Its breakdown voltage (VBR) is specified at 64.4–78.7V @ 1mA test current, with a maximum clamping voltage (VC) of 103V at 5.0A IPPM - ensuring robust overvoltage limiting during 10/1000μs surges. It exhibits <1μA reverse leakage at 58V VWM and a temperature coefficient of 78 mV/°C for VBR.
Rated for 500W non-repetitive peak pulse power and 3W steady-state dissipation (at TL = 75°C on 10×10 mm copper pads), the device supports automotive-grade reliability per AEC-Q101, including JESD201 Class 2 whisker resistance and halogen-free molding compound compliant with IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - maximum continuous DC operating voltage before conduction begins |
| VBR min/max | 64.4 V / 78.7 V @ 1 mA - ensures reliable avalanche initiation within defined tolerance band |
| VC @ IPPM | 103 V @ 5.0 A - clamping voltage during 10/1000μs surge defines protected circuit's max stress level |
| PPK | 500 W - peak surge energy handling capability per IEC 61000-4-5 Level 4 compliance |
| IR @ VWM | <1 μA - negligible standby power loss and minimal impact on high-impedance sensing nodes |
| TJ max | +175 °C - enables placement near hot automotive power components without thermal derating penalty |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with tin-plated leads per J-STD-002 |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating. Weight ≈ 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC input/power rail connection | Connected to protected line; conducts only during reverse-biased transients |
| Cathode | Ground/reference node | Marked by band; ties to system ground or low-impedance return path for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TCT, H3TRB) |
| 500W 10/1000μs surge rating | Withstands IEC 61000-4-5 Level 4 (4kV) surges on 12V/24V battery lines without degradation |
| Clamping voltage ≤103V @ 5A | Limits downstream IC voltage stress to safe levels during load dump or inductive switching events |
| Reverse leakage <1μA @ 58V | Preserves battery life in always-on automotive modules and avoids false triggering in high-Z circuits |
| DO-204AC (DO-15) package | Enables manual or automated through-hole assembly; compatible with legacy PCB footprints and reflow profiles |
Applications
| Automotive Load Dump Protection | Industrial PLC Power Input Protection |
|---|---|
Use Scenario: 12V automotive battery line exposed to ISO 7637-2 Pulse 5a (load dump up to 60V, 400ms). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input. Use Value: Clamps transient to ≤103V, protecting buck controller and gate drivers from overvoltage failure while maintaining AEC-Q101 compliance. | Use Scenario: 24V DC input stage of programmable logic controller subjected to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Primary surge clamp on main power entry, upstream of EMI filter and LDO. Use Value: Absorbs 500W pulses without degradation, enabling >100,000 surge cycles per IEC 61000-4-4 compliance testing. |
| LED Headlamp Driver Protection | Telecom Power Supply Surge Suppression |
Use Scenario: Constant-current LED driver in automotive headlamps experiencing repeated switching transients and ESD events. IC Role / Device Role / Timing Role: Local TVS across driver IC supply pins to suppress fast-rising transients from MOSFET switching. Use Value: Sub-1ps response time limits voltage overshoot to <103V, preventing gate oxide damage in high-side FETs. | Use Scenario: -48V telecom power feed line exposed to lightning-induced surges per GR-1089-CORE. IC Role / Device Role / Timing Role: Secondary-level TVS on DC output of telecom rectifier module. Use Value: 175°C junction rating allows operation in sealed, high-temp enclosures without thermal throttling or derating. |
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, same DO-214AC package but surface-mount | Requires SMT layout change; lower clamping voltage but no axial lead compatibility | Select when board space is constrained and reflow assembly is preferred over through-hole. |
| ON Semiconductor 1.5KE56A | VWM = 47.6V, VC = 93.6V @ 16A, higher IPPM but lower VWM and TO-204AA (DO-41) package | Not suitable for 58V systems due to premature conduction; requires larger PCB footprint | Choose only if system VWM ≤47.6V and higher surge current margin is critical. |
Compared with SMAJ58A and 1.5KE56A, the SA58AH uniquely combines AEC-Q101 qualification, DO-204AC through-hole compatibility, and precise 58V stand-off with 103V clamping - making it optimal for automotive and industrial designs requiring proven reliability and legacy assembly support.
Availability
SA58AH is available at Aetrix Electronics and suitable for automotive power line protection, industrial PLC input stages, LED driver surge suppression, and telecom DC feed protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SA58AH 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, MOSFETs, and bipolar transistors since 1979.
The SA Series was developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 qualification, tight parametric tolerances, and robust surge endurance in standard axial packages.
FAQ
What is the clamping voltage of SA58AH and under what test condition is it specified?
The SA58AH has a maximum clamping voltage (VC) of 103 V, measured at a peak pulse current (IPPM) of 5.0 A using the standardized 10/1000 μs double-exponential surge waveform. This value ensures predictable overvoltage limiting during real-world transients such as load dump or inductive switching, and is confirmed in the official Taiwan Semiconductor SA Series datasheet revision L2105.
Is SA58AH qualified for automotive applications, and what does the 'H' suffix indicate?
Yes, SA58AH is AEC-Q101 qualified - the 'H' suffix explicitly denotes full compliance with the AEC-Q101 stress test standard for discrete semiconductors. This includes HTOL, temperature cycling, H3TRB, and mechanical shock testing, making SA58AH suitable for under-hood and powertrain applications where reliability under harsh thermal and vibration conditions is mandatory.
What is the breakdown voltage range for SA58AH, and how is it tested?
The SA58AH has a minimum breakdown voltage (VBR) of 64.4 V and a maximum of 78.7 V, measured at a 1 mA DC test current (IT) with a 300 μs square-wave pulse per ANSI/IEEE C62.35. This wide VBR range reflects manufacturing tolerance while guaranteeing conduction onset above the 58 V working stand-off voltage, preventing false triggering during normal operation.
Does SA58AH have polarity markings, and how is its orientation identified on the PCB?
Yes, SA58AH is unidirectional and features a cathode band marking on the DO-204AC (DO-15) package body. During PCB layout, the banded end must be routed to ground or the lowest potential reference node, while the anode connects to the protected line - correct orientation is essential for proper clamping function and reverse leakage control.
What is the maximum junction temperature rating for SA58AH, and how does it affect thermal design?
The SA58AH has a maximum junction temperature (TJ) rating of +175 °C, allowing operation in high-temperature automotive and industrial environments without derating. When mounted on 10 × 10 mm copper pads per datasheet condition, its steady-state power dissipation is 3 W at TL = 75 °C - thermal design must ensure sufficient copper area and airflow to maintain TJ ≤175 °C under worst-case ambient and power loss conditions.
SA58AH 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:
- -
- 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)
SA58AH FAQ
1.How can I place an order for SA58AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SA58AH 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 SA58AH reliable?
The price and inventory of SA58AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA58AH is usually 5 days.
3.What payment methods are accepted for SA58AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA58AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA58AH?
SA58AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA58AH 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 SA58AH?
For technical support, including SA58AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA58AH requirements.
6.How does Aetrix verify that SA58AH is sourced from the original manufacturer or authorized distributors?
All SA58AH 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 SA58AH meets industry standards.
7.What is the process for return or replacement of SA58AH?
All SA58AH units undergo pre-shipment inspection (PSI). If there is an issue with SA58AH, 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 SA58AH part is unused and in its original packaging.
Return procedure for SA58AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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