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Taiwan Semiconductor Corporation SA58CAH
- Part No.:
- SA58CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA58CAH.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,696
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Product details
Overview
SA58CAH from Taiwan Semiconductor is an AEC-Q101 qualified bidirectional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, with 58V working stand-off voltage (VWM), 64.4–78.7V breakdown voltage (VBR), and 103V maximum clamping voltage (VC) at 5.0A peak pulse current - used for ESD and lightning surge protection in automotive lighting and powertrain control modules.
For engineers reviewing the SA58CAH datasheet, SA58CAH pinout, SA58CAH application, or SA58CAH equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, AEC-Q101 qualification status, DO-15 mechanical data, and direct alternatives for automotive-grade transient suppression design.
Technical Context
The SA58CAH is a bidirectional silicon avalanche diode designed to clamp transient overvoltages in both polarities without polarity dependence. Its VBR range (64.4–78.7V) and VC = 103V @ IPPM = 5.0A define its robust clamping margin under 10/1000μs surges, while low leakage (<1μA @ VWM) ensures minimal standby power impact on protected circuits.
It operates across –55°C to +175°C junction temperature, supports 70A non-repetitive forward surge (IFSM), and features fast response (<5.0ns for bidirectional mode), enabling protection of CAN FD, LIN, and sensor interfaces in harsh automotive environments where reliability under thermal cycling and mechanical vibration is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before clamping begins; sets system-level overvoltage immunity threshold. |
| VBR min/max | 64.4 V / 78.7 V @ IT = 1 mA - Confirmed avalanche onset range; ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 103 V @ 5.0 A - Clamped voltage during 10/1000μs surge; defines worst-case stress on downstream ICs like microcontrollers or transceivers. |
| PPK | 500 W - Peak pulse power rating per 10/1000μs waveform; validates capability against ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 surges. |
| IR @ VWM | <1 μA - Reverse leakage at rated stand-off voltage; guarantees negligible quiescent current draw in always-on automotive modules. |
| TJ max | +175 °C - Maximum junction temperature; enables placement near high-power components (e.g., motor drivers) without derating concerns. |
| Package | DO-204AC (DO-15) - Industry-standard axial-leaded package with UL 94V-0 molding compound and tin-plated leads compliant with J-STD-002 solderability. |
Pinout & Package
SA58CAH is a two-terminal bidirectional TVS diode in DO-204AC (DO-15) package. Polarity is not applicable - terminals are symmetrical and interchangeable. Cathode band marking is omitted per bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Provides identical clamping behavior for positive and negative transients; no orientation required during PCB placement. |
| Lead 1 / Lead 2 | Current path for surge conduction | Each lead carries full IPPM during clamping; requires ≥10×10 mm copper pads per terminal for rated PD = 3 W at TL = 75°C. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including temperature cycling, humidity bias, and mechanical shock per Rev G requirements. |
| Bidirectional clamping | Identical VBR and VC performance in both directions eliminates need for polarity-aware layout or external series components. |
| 5.0 ns response time | Enables protection of high-speed interfaces (e.g., CAN FD up to 5 Mbps) by limiting transient propagation before IC damage occurs. |
| UL 94V-0 flammability rating | Molding compound meets automotive safety standards for flame resistance in enclosed engine bay or cabin modules. |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal stress, ensuring long-term reliability in 15+ year automotive service life. |
Applications
| Automotive Lighting Control | Powertrain ECU Protection |
|---|---|
|
Use Scenario: Protecting LED driver ICs and MOSFET gate drivers from load dump and inductive kickback in headlamp modules. IC Role / Device Role: Bidirectional TVS placed across power rail and ground to clamp ±120V transients induced by relay switching or alternator regulation faults. Use Value: Limits rail voltage to ≤103V during 500W surges, preventing latch-up or oxide breakdown in 3.3V/5V logic and gate drivers. |
Use Scenario: Safeguarding CAN transceivers and microcontroller I/O pins in engine control units exposed to ISO 7637-2 Pulse 5a. IC Role / Device Role: Primary rail-level TVS on VCC supply line upstream of LDOs, absorbing >90% of 10/1000μs surge energy before it reaches sensitive analog/digital circuitry. Use Value: Maintains <1μA leakage at 58V VWM to avoid loading low-power sleep modes while delivering 103V clamping at 5A IPPM. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
|
Use Scenario: Shielding LIN bus transceivers and window motor H-bridge drivers from ESD events and battery reversal transients. IC Role / Device Role: Bidirectional TVS connected between LIN signal line and chassis ground, suppressing ±8kV contact ESD per ISO 10605. Use Value: Sub-5ns response ensures clamping initiates before LIN transceiver input stage sustains damage, preserving communication integrity. |
Use Scenario: Protecting torque sensor signal conditioning circuitry and motor phase drivers from coupled noise during high-current motor commutation. IC Role / Device Role: TVS placed across differential torque sensor outputs (e.g., Wheatstone bridge) to clamp common-mode surges without distorting mV-level signals. Use Value: Low 1μA IR prevents DC offset error in precision amplifiers; DO-15 package allows manual rework in tight EPS module layouts. |
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 SMAJ58CA | Same DO-214AC package; VBR = 64.4–71.1V, VC = 93.6V @ 5.6A; lower clamping voltage but higher IPPM. | Preferred for space-constrained PCBs where surface-mount is mandatory; lacks AEC-Q101 documentation in standard grade. | Select SMAJ58CA only if DO-214AC footprint is fixed and AEC-Q101 compliance is verified via specific lot traceability. |
| ON Semiconductor 1.5KE58CA | DO-201AD package; VBR = 64.4–71.1V, VC = 93.6V @ 5.6A; same 500W rating but larger body and higher thermal resistance. | Suitable for industrial power supplies where axial DO-15 lead spacing conflicts with existing layout; higher mounting height may impede enclosure fit. | Choose 1.5KE58CA when legacy DO-201AD tooling exists or when higher surge repetition tolerance is needed (derated PPK curve differs). |
Compared with SMAJ58CA and 1.5KE58CA, SA58CAH uniquely combines AEC-Q101 qualification, DO-204AC (DO-15) axial form factor, and documented 175°C TJ max - making it the only option qualified for under-hood automotive use without additional reliability validation.
Availability
SA58CAH is available at Aetrix Electronics and suitable for automotive lighting control, powertrain ECU protection, and body control module designs requiring stable component supply with full AEC-Q101 traceability and DO-15 through-hole compatibility.
Supply support for SA58CAH 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 automotive and industrial certifications.
The SA Series was developed specifically for AEC-Q101-compliant transient suppression in automotive subsystems, emphasizing high-temperature operation, bidirectional symmetry, and robust surge handling in cost-sensitive axial packages.
FAQ
What does the "H" suffix in SA58CAH signify?
The "H" suffix in SA58CAH explicitly denotes AEC-Q101 qualification per Rev G test requirements, including stress testing for temperature cycling, high-temperature operating life, and mechanical shock. SA58CAH is not merely a variant of SA58CA - it carries full automotive-grade certification documentation and lot-level traceability required for Tier 1 automotive supply chains.
Is SA58CAH unidirectional or bidirectional, and how is polarity marked?
SA58CAH is a bidirectional TVS diode - it clamps transients of either polarity identically, with no cathode band or polarity marking on the DO-204AC (DO-15) package. This is confirmed by its "CA" designation (C = bidirectional, A = AEC-Q101), VBR and VC specifications published for both directions, and absence of polarity-dependent parameters in the datasheet.
What is the maximum clamping voltage of SA58CAH under standard surge conditions?
The maximum clamping voltage of SA58CAH is 103 V, measured at 5.0 A peak pulse current (IPPM) under the standardized 10/1000 μs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can SA58CAH replace SA58A in an existing design?
No - SA58CAH cannot directly replace SA58A. SA58A is unidirectional (cathode-banded, "A" suffix only), while SA58CAH is bidirectional ("CA" suffix) with different VBR min/max (64.4–78.7V vs. 64.4–71.2V) and clamping behavior. Substitution would require layout review to confirm symmetric placement and verify that bidirectional clamping aligns with system-level surge paths.
What packaging options are available for SA58CAH?
SA58CAH is supplied in tape-and-reel format: 3,500 units per reel (ordering code SA58CAH). Ammo box packaging (1,500 units) is available under ordering code SA58CAHA0G. Both options use DO-204AC (DO-15) packaging with pure tin-plated leads compliant with J-STD-002 solderability standards.
SA58CAH 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:
- 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)
SA58CAH FAQ
1.How can I place an order for SA58CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SA58CAH 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 SA58CAH reliable?
The price and inventory of SA58CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA58CAH is usually 5 days.
3.What payment methods are accepted for SA58CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA58CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA58CAH?
SA58CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA58CAH 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 SA58CAH?
For technical support, including SA58CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA58CAH requirements.
6.How does Aetrix verify that SA58CAH is sourced from the original manufacturer or authorized distributors?
All SA58CAH 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 SA58CAH meets industry standards.
7.What is the process for return or replacement of SA58CAH?
All SA58CAH units undergo pre-shipment inspection (PSI). If there is an issue with SA58CAH, 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 SA58CAH part is unused and in its original packaging.
Return procedure for SA58CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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