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Taiwan Semiconductor Corporation SA13H
- Part No.:
- SA13H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA13H.pdf
- Description:
- 500W, 16V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,169
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Product details
Overview
SA13H from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, with 13V working stand-off voltage (VWM), 14.4–17.6V breakdown voltage (VBR @ 1mA), and 22A peak pulse current (IPPM) at 10/1000μs. It clamps to ≤23.8V under surge, supports automotive-grade reliability via AEC-Q101 qualification, and protects power rails in DC-DC converters and automotive body electronics.
For engineers reviewing the SA13H datasheet, SA13H pinout, SA13H application, or SA13H equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD tolerance, leakage current (<1μA @ 13V), thermal derating above 25°C, and AEC-Q101 compliance for under-hood deployment.
Technical Context
The SA13H operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its VBR range (14.4–17.6V) and clamping transients to ≤23.8V at 22A. Its low dynamic impedance ensures effective suppression of EFT and ISO 7637-2 pulses without latch-up or degradation.
Designed for single-polarity DC line protection, it features <1.0ps response time from 0V to VBR, <1μA reverse leakage above 10V, and a maximum junction temperature of +175°C - enabling operation in high-ambient environments such as engine control units and lighting modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 14.4 / 17.6 V @ 1 mA - Confirmed breakdown threshold range defining turn-on consistency |
| VC @ IPPM | ≤23.8 V @ 22 A - Clamping voltage during 10/1000μs surge, ensuring protected IC stays below absolute max rating |
| PPK | 500 W - Peak surge power handling capability per single non-repetitive event |
| IR @ VWM | <1 μA - Negligible standby leakage, critical for battery-backed or low-power sensor circuits |
| TJ max | +175 °C - Enables placement near heat sources like power MOSFETs or motor drivers |
| AEC-Q101 | Qualified - Validated for automotive applications including engine management and ADAS power domains |
Pinout & Package
SA13H uses the DO-204AC (DO-15) axial-leaded package with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; defines polarity for unidirectional clamping |
| Cathode | Protected line input | Connected to the rail being protected (e.g., 12V battery feed); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive temperature cycling, mechanical shock, and humidity testing - enables use in ASIL-B subsystems without requalification |
| Fast response time | <1.0 ps from 0V to VBR - Ensures clamping initiates before sensitive logic or analog circuitry experiences overvoltage stress |
| Low clamping ratio | VC/VBR ≈ 1.4 - Tight voltage margin between breakdown and clamping improves design safety margin vs. IC absolute maximum ratings |
| UL 94V-0 molding compound | Flame-retardant epoxy housing - Meets automotive interior material flammability requirements per FMVSS 302 |
| RoHS & halogen-free | Compliant with IEC 61249-2-21 - Supports green manufacturing and end-of-life recycling mandates |
Applications
| Automotive Power Rail Protection | Industrial DC-DC Converter Input |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery feed and DC-DC input capacitor. Use Value: Clamps transients up to 500W without degradation, maintaining downstream regulator input within safe operating area. | Use Scenario: 24V industrial PLC power supply input subject to inductive switching noise from solenoid drivers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC bus prior to buck converter stage. Use Value: Limits voltage excursions to ≤23.8V, preventing premature failure of high-side MOSFET gate oxide and bootstrap capacitor dielectric. |
| LED Driver Overvoltage Suppression | Automotive Lighting Module ESD Protection |
Use Scenario: Constant-current LED driver input in headlamp assembly subjected to ISO 16750-2 pulse 5a. IC Role / Device Role / Timing Role: Standoff-rated TVS on input rail to absorb repetitive 10/1000μs surges. Use Value: Withstands ≥1000 surges at rated PPK while maintaining VWM stability and leakage integrity. | Use Scenario: CAN-connected tail lamp module requiring ESD immunity per ISO 10605 (±25kV contact). IC Role / Device Role / Timing Role: First-stage protection on power and signal lines entering lighting controller IC. Use Value: Sub-nanosecond response captures ESD events before propagation into microcontroller I/O pins or transceiver inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A | Same DO-214AC package; 14.4–17.6V VBR but bidirectional configuration; higher VC (21.5V) | Requires dual-rail or AC-coupled protection; not suitable for unidirectional DC-only lines | Select SMAJ13A only if bipolar surge exposure (e.g., data lines) is required; SA13H preferred for dedicated battery rail clamping. |
| P6SMB13A | DO-214AA package; identical VWM/VBR specs but lower PPK (600W); 23.8V VC same | Larger footprint; higher thermal mass allows longer surge duration handling but less board space efficiency | Choose P6SMB13A when legacy layout compatibility or extended surge repetition rate is needed; SA13H offers superior space-constrained AEC-Q101 compliance. |
Compared with SMAJ13A and P6SMB13A, SA13H uniquely combines AEC-Q101 qualification, DO-204AC form factor, and optimized unidirectional clamping for automotive power rail integration - eliminating need for external polarity control or footprint adaptation.
Availability
SA13H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial DC-DC converter input staging, and LED driver overvoltage suppression requiring stable component supply across production lifecycles.
Supply support for SA13H 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 Company (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 robust, high-energy transient suppression in automotive 12V/24V systems - emphasizing AEC-Q101 reliability, tight VBR tolerances, and low-clamp-voltage performance under ISO 7637-2 and ISO 16750-2 stress profiles.
FAQ
What is the clamping voltage of SA13H at its rated peak pulse current?
The SA13H clamps to a maximum of 23.8 V at its rated peak pulse current of 22 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream components remain within their absolute maximum voltage ratings during surge events. The SA13H maintains this clamping performance across its full operating temperature range from –55°C to +175°C.
Is SA13H unidirectional or bidirectional, and how is polarity identified?
SA13H is a unidirectional TVS diode, intended for DC line protection where surge polarity is known and fixed. Polarity is marked by a cathode band on the DO-204AC (DO-15) package body - the banded end connects to the protected line (e.g., 12V rail), while the unbanded end connects to ground. Bidirectional variants in the SA series use "CA" suffixes (e.g., SA13CA), which SA13H does not carry.
Does SA13H meet automotive qualification standards?
Yes, SA13H is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in its ordering code. This certification covers stress tests including temperature cycling, high-temperature operating life, unbiased highly accelerated stress test (uHAST), and mechanical shock - confirming suitability for under-hood and chassis-mounted automotive applications per ISO/TS 16949 requirements.
What is the maximum steady-state power dissipation for SA13H at elevated temperatures?
The SA13H has a steady-state power dissipation (PD) rating of 3 W at lead temperature (TL) = 75°C, measured with 0.375" (9.5 mm) copper pads per terminal. Derating follows the curve in Figure 2 of the datasheet: PD decreases linearly to zero at +175°C junction temperature. At ambient 85°C with standard PCB layout, usable continuous power is approximately 1.8 W.
How does SA13H compare to SA13A in terms of electrical performance?
SA13H and SA13A share identical electrical parameters - both have VWM = 13 V, VBR = 14.4–17.6 V, VC = 23.8 V, and IPPM = 22 A. The "H" suffix denotes AEC-Q101 qualification, while "A" indicates tighter VBR tolerance (14.4–15.9 V vs. 14.4–17.6 V for standard SA13). SA13H meets both AEC-Q101 and the tighter VBR binning of SA13A, making it the highest-spec variant in the SA13 family.
SA13H 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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.8V
- Current - Peak Pulse (10/1000µs):
- 22A
- 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)
SA13H FAQ
1.How can I place an order for SA13H through Aetrix?
Please submit a Request for Quotation (RFQ) for SA13H 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 SA13H reliable?
The price and inventory of SA13H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA13H is usually 5 days.
3.What payment methods are accepted for SA13H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA13H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA13H?
SA13H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA13H 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 SA13H?
For technical support, including SA13H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA13H requirements.
6.How does Aetrix verify that SA13H is sourced from the original manufacturer or authorized distributors?
All SA13H 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 SA13H meets industry standards.
7.What is the process for return or replacement of SA13H?
All SA13H units undergo pre-shipment inspection (PSI). If there is an issue with SA13H, 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 SA13H part is unused and in its original packaging.
Return procedure for SA13H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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