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Taiwan Semiconductor Corporation SA58H
- Part No.:
- SA58H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA58H.pdf
- Description:
- 500W, 71.6V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,590
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Product details
Overview
SA58H 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 - designed for automotive-grade ESD and load-dump protection in power supply rails and signal lines.
For engineers reviewing the SA58H datasheet, SA58H pinout, SA58H application, or SA58H equivalent, key selection criteria include AEC-Q101 qualification, unidirectional polarity, 103V clamping performance at 5.0A, low leakage (<1μA @ 58V), and DO-204AC mechanical compatibility with legacy through-hole PCB layouts.
Technical Context
The SA58H operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR range (64.4–78.7V), clamping transients to ≤103V within <1.0ps response time. It sustains 500W peak pulse power per 10/1000μs waveform and handles up to 70A non-repetitive forward surge current (IFSM).
Thermal design relies on its 175°C maximum junction temperature and derating curve (Fig.2); steady-state power dissipation is 3W at TL = 75°C with 9.5mm lead lengths. Its 1.0mA test current (IT) and 58V VWM ensure stable operation below breakdown while blocking normal system voltages.
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 / 78.7 V @ 1 mA - Confirmed avalanche onset range under standardized test conditions |
| VC @ IPPM | 103 V @ 5.0 A - Clamped voltage during 10/1000μs surge, defining worst-case downstream overvoltage |
| PPK | 500 W - Peak pulse power handling capability per standard IEC 61000-4-5 waveform |
| IR @ VWM | <1 μA - Reverse leakage ensures minimal quiescent power loss and signal integrity in standby |
| TJ max | 175 °C - Enables operation in under-hood automotive environments without thermal shutdown |
| Package | DO-204AC (DO-15) - Standard axial-leaded through-hole package with tin-plated leads per J-STD-002 |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case meeting UL 94V-0; cathode indicated by band; polarity-critical for unidirectional operation; weight ≈0.400g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to system ground or low-side reference; completes clamping loop during transient |
| Cathode | Reverse-biased terminal / High-side connection | Connected to protected line (e.g., 12V rail); blocks VWM but avalanches above VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| 500W 10/1000μs surge rating | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 4 transients |
| <1.0ps response time | Clamps ESD events (IEC 61000-4-2) before sensitive ICs experience overstress |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and automotive material restrictions |
| Low impedance surge path | Enables effective energy diversion away from protected ICs via minimal dynamic resistance |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-supplied ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤103V during 500W transients, preventing latch-up or gate oxide damage in downstream logic. | Use Scenario: 4–20mA current-loop sensors in factory automation subject to cable-induced EFT bursts. IC Role / Device Role / Timing Role: SA58H shunts fast transients across analog front-end inputs to preserve ADC accuracy and amplifier stability. Use Value: Sub-nanosecond response ensures clamping occurs before 5ns EFT edges propagate into precision signal chains. |
| LED Driver Overvoltage Suppression | Telecom Line Card Surge Protection |
Use Scenario: Constant-current LED drivers in commercial lighting subjected to inductive switching spikes from relay coils. IC Role / Device Role / Timing Role: Mounted across driver output to absorb flyback energy from inductive loads. Use Value: 70A IFSM rating supports repeated 8.3ms half-sine surges without degradation, extending driver lifetime. | Use Scenario: Low-voltage telecom interface cards connected to external wiring susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage protection on +5V/3.3V supply lines feeding PHY ICs and level shifters. Use Value: 58V VWM allows safe operation across nominal 48V phantom power margins while clamping to 103V during 1kV/0.5kA threats. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A | Same VWM (58V), lower PPK (400W), SMA package (SMT) | Requires PCB rework for surface-mount layout; lacks AEC-Q101 qualification | Select if space-constrained SMT design prioritizes footprint over automotive qualification |
| P6KE56A | Lower VWM (56V), same DO-15 package, 600W rating, no AEC-Q101 | Clamps at lower voltage (93.6V @ 5.6A) but unqualified for automotive use | Select for industrial power supplies where AEC-Q101 is not mandated and tighter clamping margin is needed |
Compared with SMAJ58A and P6KE56A, the SA58H uniquely combines AEC-Q101 qualification, 500W 10/1000μs rating, and DO-204AC through-hole compatibility - making it the only drop-in solution for legacy automotive PCBs requiring certified surge robustness without layout change.
Availability
SA58H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, LED driver modules, and telecom line cards requiring stable component supply across extended production lifecycles.
Supply support for SA58H 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 for automotive, industrial, and consumer markets.
The SA Series was developed specifically for high-reliability transient suppression in automotive power systems, emphasizing AEC-Q101 compliance, tight parameter distribution, and robust surge endurance in DO-204AC packaging.
FAQ
What is the clamping voltage of SA58H and how is it measured?
The SA58H has a maximum clamping voltage (VC) of 103 V, measured at 5.0 A peak pulse current (IPPM) using the standard 10/1000 μs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuits during transient events and is guaranteed across the full operating temperature range per TSC's characterization data.
Is SA58H unidirectional or bidirectional, and how is polarity marked?
The SA58H is a unidirectional TVS diode, with polarity indicated by a cathode band on the DO-204AC (DO-15) package body. The cathode must be connected to the protected line (e.g., 12V rail), and the anode to ground - reverse orientation prevents proper clamping and may cause device failure under surge conditions.
Does SA58H meet automotive reliability standards?
Yes, SA58H is explicitly AEC-Q101 qualified per the ordering code suffix "H", confirming stress testing for high-temperature operating life, temperature cycling, humidity bias, and mechanical shock - making it suitable for under-hood and chassis-mounted automotive electronics per TSC's L2105 specification release.
What is the maximum junction temperature and thermal derating behavior of SA58H?
The SA58H has a maximum junction temperature (TJ) of 175°C and follows a defined derating curve (Fig.2 in TSC documentation): peak pulse power decreases linearly above 25°C ambient, reaching ~50% of 500W at 100°C ambient. At TL = 75°C with 9.5mm lead lengths, its steady-state power dissipation is rated at 3W.
How does SA58H compare to SA58A in terms of electrical performance?
The SA58H and SA58A share identical VWM (58V) and VBR range (64.4–71.2V), but SA58H is AEC-Q101 qualified while SA58A is not. Electrically, SA58H exhibits the same 103V clamping voltage at 5.0A and <1μA leakage - the "H" suffix denotes qualification only, not parametric differentiation.
SA58H 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:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5A
- 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)
SA58H FAQ
1.How can I place an order for SA58H through Aetrix?
Please submit a Request for Quotation (RFQ) for SA58H 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 SA58H reliable?
The price and inventory of SA58H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA58H is usually 5 days.
3.What payment methods are accepted for SA58H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA58H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA58H?
SA58H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA58H 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 SA58H?
For technical support, including SA58H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA58H requirements.
6.How does Aetrix verify that SA58H is sourced from the original manufacturer or authorized distributors?
All SA58H 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 SA58H meets industry standards.
7.What is the process for return or replacement of SA58H?
All SA58H units undergo pre-shipment inspection (PSI). If there is an issue with SA58H, 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 SA58H part is unused and in its original packaging.
Return procedure for SA58H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA58H Tags
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