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Taiwan Semiconductor Corporation SA36H
- Part No.:
- SA36H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA36H.pdf
- Description:
- 500W, 44.5V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,566
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Product details
Overview
SA36H from Taiwan Semiconductor is a unidirectional AEC-Q101-qualified transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, designed for automotive and industrial overvoltage protection. It features a 36 V working stand-off voltage (VWM), 40.0–48.9 V breakdown voltage (VBR @ 1 mA), 64.5 V maximum clamping voltage (VC) at 8.1 A peak pulse current, and 500 W peak pulse power rating at 10/1000 μs waveform.
For engineers reviewing the SA36H datasheet, SA36H pinout, SA36H application, or SA36H equivalent, key selection criteria include clamping performance under ISO 7637-2/IEC 61000-4-5 transients, AEC-Q101 qualification status, unidirectional polarity marking, DO-15 mechanical compatibility, and low leakage (<1 μA @ 36 V) for battery-sensitive systems.
Technical Context
The SA36H operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its specified VBR range (40.0–48.9 V) to clamp transient energy into ground. Its fast response time (<1.0 ps from 0 V to VBR) ensures protection against ESD and fast-rising transients before downstream ICs are damaged.
It sustains 500 W non-repetitive surge power per 10/1000 μs waveform with thermal derating above 25°C, and maintains stable junction operation across –55°C to +175°C. The device uses pure tin-plated leads compliant with J-STD-002 and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines system bus voltage compatibility. |
| VBR @ 1 mA | 40.0–48.9 V - Breakdown voltage range at 1 mA test current; determines precise turn-on threshold under surge conditions. |
| VC @ IPPM | 64.5 V at 8.1 A - Clamping voltage during 10/1000 μs surge; limits peak stress on protected ICs. |
| PPK | 500 W - Peak pulse power handling capability; meets ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 requirements. |
| IR @ VWM | <1 μA - Reverse leakage at 36 V; minimizes quiescent current drain in always-on automotive modules. |
| TJ max | +175°C - Maximum junction temperature; supports under-hood deployment without derating in high-ambient environments. |
| Package | DO-204AC (DO-15) - Standard axial-leaded through-hole package with cathode band marking; compatible with legacy PCB layouts and wave soldering. |
Pinout & Package
SA36H is a two-terminal unidirectional TVS diode in DO-204AC (DO-15) package. Cathode is marked by a band on the body; anode is unmarked end. Leads are pure tin-plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Ground reference | Connected to system ground or low-impedance return path; carries surge current during clamping. |
| Cathode | Reverse-biased input / Protected line connection | Connected to the line being protected (e.g., 12 V rail); blocks normal operation but avalanches during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - required for engine control, body electronics, and ADAS modules. |
| 500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (500 V/2 Ω) and IEC 61000-4-5 combination wave (4 kV) without degradation. |
| <1.0 ps response time | Clamps transients before propagation into sensitive analog front-ends or microcontroller I/O pins. |
| Low IR <1 μA @ 36 V | Enables use on always-powered vehicle networks (e.g., CAN standby lines) without measurable battery drain. |
| DO-204AC mechanical compliance | Meets JESD 201 Class 2 whisker resistance and UL 94V-0 flammability - suitable for high-reliability industrial and transportation applications. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units (ECUs) against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and LDO input to clamp transients before regulation. Use Value: Limits peak voltage to ≤64.5 V during 100 V/50 ms load dump events, preserving downstream PMIC and MCU integrity. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Front-end transient suppressor on signal lines before instrumentation amplifier or ADC driver. Use Value: Prevents latch-up or damage from EFT bursts (IEC 61000-4-4) while maintaining <1 μA leakage for precision offset stability. |
| LED Lighting Driver Protection | Automotive CAN Transceiver Protection |
Use Scenario: Shielding constant-current LED drivers in headlamp modules from alternator ripple and ignition noise. IC Role / Device Role / Timing Role: Parallel-connected TVS on output stage to absorb inductive kickback from MOSFET switches. Use Value: Absorbs 500 W surges without degradation, enabling >100,000-cycle lifetime in automotive lighting systems. |
Use Scenario: Protecting high-speed CAN FD transceivers (e.g., TJA1057) from ESD and coupled transients on vehicle bus lines. IC Role / Device Role / Timing Role: Secondary clamping device after common-mode choke, referenced to ground near transceiver pins. Use Value: Clamps to 64.5 V within <1 ps, preventing bus lockup during ±8 kV contact ESD per ISO 10605. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | Same VWM (36 V), but lower PPK (400 W); bidirectional configuration unless suffix 'A' used; SMA package (SMT). | Not AEC-Q101 qualified; intended for commercial-grade SMT designs with space constraints. | Select SMAJ36A only for cost-sensitive, non-automotive PCBs where DO-15 footprint is unavailable and 400 W surge margin suffices. |
| 1.5KE36A | Higher VBR (40.0–44.2 V), same DO-15 package, but rated for 1500 W peak power and lacks AEC-Q101 validation. | Used in industrial AC/DC front-ends; not validated for automotive thermal cycling or humidity exposure. | Choose 1.5KE36A for higher-energy surge environments (e.g., motor drives), but avoid in AEC-compliant automotive modules. |
Compared with SMAJ36A and 1.5KE36A, SA36H uniquely combines AEC-Q101 qualification, 500 W clamping capability, and DO-15 through-hole compatibility - making it the only drop-in solution for automotive ECUs requiring both reliability certification and legacy board support.
Availability
SA36H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED lighting driver surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SA36H 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 AEC-Q101-compliant transient suppression in harsh-environment automotive electronics, emphasizing low leakage, fast response, and robust thermal performance in standard DO-15 packaging.
FAQ
What is the AEC-Q101 qualification status of SA36H?
The SA36H is explicitly AEC-Q101 qualified per the manufacturer's ordering code suffix "H", confirming full compliance with stress tests including temperature cycling, high-temperature reverse bias, and ESD robustness. This qualification is documented in Taiwan Semiconductor's SA Series datasheet Version L2105 and applies specifically to SA36H - not inferred from family-level claims.
Does SA36H support bidirectional transient suppression?
No, SA36H is a unidirectional TVS diode, as confirmed by its single cathode band marking, absence of bidirectional VBR specifications in its row of the electrical characteristics table, and explicit designation in the "Devices for bipolar applications" note that only CA-suffixed types (e.g., SA36CA) are bidirectional. Using SA36H for bidirectional protection would leave positive-going transients unclamped.
What is the maximum clamping voltage of SA36H under standard test conditions?
The maximum clamping voltage (VC) of SA36H is 64.5 V at 8.1 A peak pulse current (IPPM), measured using the 10/1000 μs waveform per IEC 61000-4-5. This value is specified in the "MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS" table for SA36 and confirmed across all SAxH variants in the datasheet.
Can SA36H be used in place of SA36 or SA36A?
Yes - SA36H shares identical electrical parameters (VWM = 36 V, VBR = 40.0–48.9 V, VC = 64.5 V) and DO-204AC package with SA36 and SA36A, differing only in AEC-Q101 qualification and RoHS/halogen-free compliance. No circuit or layout changes are needed; SA36H is a direct replacement where automotive qualification is required.
What is the junction temperature limit and thermal derating behavior of SA36H?
SA36H has a maximum junction temperature (TJ) of +175°C and follows the Pulse Derating Curve (Fig.2) in the datasheet: peak pulse power decreases linearly from 500 W at 25°C ambient to ~300 W at 100°C ambient. Derating is based on case temperature (TL) measured at lead lengths of 9.5 mm, per JEDEC standards.
SA36H 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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 8.1A
- 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)
SA36H FAQ
1.How can I place an order for SA36H through Aetrix?
Please submit a Request for Quotation (RFQ) for SA36H 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 SA36H reliable?
The price and inventory of SA36H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA36H is usually 5 days.
3.What payment methods are accepted for SA36H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA36H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA36H?
SA36H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA36H 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 SA36H?
For technical support, including SA36H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA36H requirements.
6.How does Aetrix verify that SA36H is sourced from the original manufacturer or authorized distributors?
All SA36H 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 SA36H meets industry standards.
7.What is the process for return or replacement of SA36H?
All SA36H units undergo pre-shipment inspection (PSI). If there is an issue with SA36H, 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 SA36H part is unused and in its original packaging.
Return procedure for SA36H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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