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Taiwan Semiconductor Corporation SA36CH
- Part No.:
- SA36CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA36CH.pdf
- Description:
- 500W, 44.5V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,658
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Product details
Overview
SA36CH from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, with 36V working stand-off voltage (VWM), 40.0–48.9V breakdown voltage (VBR), and 64.5V maximum clamping voltage (VC) at 8.1A peak pulse current - designed for automotive-grade ESD and surge protection in power supply rails and signal lines.
For engineers reviewing the SA36CH datasheet, SA36CH pinout, SA36CH application, or SA36CH equivalent, this AEC-Q101 qualified TVS provides verified clamping performance, low leakage (<1μA @ 36V), fast response (<1.0ps), and robust thermal capability up to +175°C junction temperature - critical for automotive body control modules, infotainment power inputs, and industrial sensor interfaces.
Technical Context
The SA36CH operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its VBR range (40.0–48.9V) to shunt transient energy to ground. Its 64.5V clamping voltage at 8.1A ensures downstream ICs see limited overvoltage during IEC 61000-4-5 Level 4 surges.
Designed for automotive reliability, it meets AEC-Q101 stress tests including temperature cycling, high-temperature operating life, and solderability per J-STD-002. The DO-204AC package supports 3W steady-state dissipation on 10×10 mm copper pads and withstands 70A non-repetitive forward surge (8.3ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 36V systems. |
| VBR min/max | 40.0 / 48.9 V - Breakdown occurs within this band at 1 mA test current; ensures consistent turn-on across production lots. |
| VC @ IPPM | 64.5 V at 8.1 A - Clamping voltage under 10/1000μs surge; limits transient overshoot to protect 60V-rated MOSFETs or CAN transceivers. |
| PPK | 500 W - Peak pulse power handling per IEC 61000-4-5; sustains 1kV/0.5Ω combo wave without failure. |
| IR @ VWM | <1 μA - Reverse leakage at 36V; negligible power loss and no measurable impact on battery drain in always-on circuits. |
| TJ max | +175 °C - Maximum junction temperature; enables placement near hot components like power converters in engine compartments. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with tin-plated leads; compatible with automated through-hole assembly and reflow. |
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 JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-impedance return path; completes clamping loop during transient events. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 36V supply rail); reverse-biased during normal operation, avalanches during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood and chassis applications including temperature cycling, HTOL, and mechanical shock. |
| 500W 10/1000μs surge rating | Withstands IEC 61000-4-5 Level 4 (4kV) surges on 50Ω/0.5Ω source impedance without degradation. |
| <1.0 ps response time | Clamps within sub-picosecond of overvoltage onset - faster than most microcontroller I/O protection structures. |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for automotive OEMs requiring full material declaration and green manufacturing. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot relative to breakdown threshold - improves margin for 48V system components. |
Applications
| Automotive Body Control Module (BCM) | Industrial 36V Sensor Power Rail |
|---|---|
Use Scenario: Protecting 36V supply inputs in BCMs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 36V rail and chassis ground to clamp transients before they reach PMICs and microcontrollers. Use Value: Limits clamping voltage to 64.5V, preserving 65V-rated input capacitors and preventing latch-up in 36V-system PMICs. |
Use Scenario: Safeguarding 36V-powered pressure/temperature sensors in factory automation equipment. IC Role / Device Role / Timing Role: Front-end transient suppressor on sensor module power entry, upstream of LDO regulators. Use Value: Sub-1μA leakage avoids measurement drift; 175°C rating allows mounting directly on heated sensor housings. |
| Commercial Vehicle Lighting Driver | 48V Mild Hybrid DC-DC Converter Input |
Use Scenario: Protecting LED driver ICs from inductive kickback during headlight switching in trucks and buses. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver FET drain-source to absorb flyback energy. Use Value: 70A peak forward surge rating handles repetitive inductive spikes without parametric shift or thermal runaway. |
Use Scenario: Input-side surge suppression on 48V-to-12V DC-DC converters in mild hybrid architectures. IC Role / Device Role / Timing Role: Primary clamping device on 48V bus prior to buck controller and gate drivers. Use Value: 36V VWM provides 12V margin above nominal 48V bus, while 64.5V VC stays below 75V absolute max ratings of common buck controllers. |
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 SMAJ36A | Same DO-214AC package, but bidirectional; VBR = 40.0–44.2V, VC = 58.1V @ 9.0A. | Supports AC-coupled or floating-line protection; not suitable where polarity-specific grounding is required. | Choose SMAJ36A only if bidirectional clamping is needed; SA36CH offers lower leakage and AEC-Q101 traceability. |
| ON Semiconductor 1.5SMC36A | DO-214AB package; higher VC = 58.1V @ 9.0A, same VWM/VBR range, but not AEC-Q101 qualified. | Acceptable for industrial use, but lacks automotive qualification testing and long-term reliability data for automotive programs. | Select SA36CH for automotive Tier 1 BOMs; 1.5SMC36A may be used in cost-sensitive industrial designs where AEC-Q101 is not mandated. |
Compared with SMAJ36A and 1.5SMC36A, the SA36CH delivers AEC-Q101 validation, unidirectional precision for grounded-rail protection, and tighter VBR tolerance - making it the preferred choice for automotive 36V subsystems requiring zero-field-failure reliability.
Availability
SA36CH is available at Aetrix Electronics and suitable for automotive body electronics, industrial 36V sensor interfaces, commercial vehicle lighting systems, and 48V mild hybrid power conversion requiring stable component supply and full AEC-Q101 compliance.
Supply support for SA36CH 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, serving global automotive, industrial, and consumer markets since 1979.
The SA Series TVS diodes are engineered specifically for AEC-Q101-compliant automotive transient suppression - emphasizing low clamping ratio, high surge robustness, and extended temperature operation in harsh environments.
FAQ
What is the clamping voltage of the SA36CH under standard 10/1000μs surge conditions?
The SA36CH has a maximum clamping voltage (VC) of 64.5 V at 8.1 A peak pulse current under the 10/1000μs waveform. This value is measured per IEC 61000-4-5 and ensures protected circuitry remains below critical overvoltage thresholds during standardized surge events. The SA36CH maintains this clamping performance across its full operating temperature range.
Is the SA36CH unidirectional or bidirectional, and how is polarity identified?
The SA36CH is a unidirectional TVS diode, with cathode marked by a band on the DO-204AC (DO-15) package body. It conducts only during reverse overvoltage events - i.e., when the cathode is more positive than the anode - and blocks forward current up to 3.5 V at 35 A. Polarity must be observed during PCB layout to ensure correct protection orientation. The SA36CH does not function as a bidirectional device.
Does the SA36CH meet AEC-Q101 requirements, and what tests are included?
Yes, the SA36CH is AEC-Q101 qualified, covering stress tests including high-temperature operating life (HTOL), temperature cycling, mechanical shock, vibration, and solderability per J-STD-002. The "H" suffix in SA36CH explicitly denotes AEC-Q101 compliance. This qualification confirms suitability for automotive under-hood and chassis applications where reliability over 15+ years is mandatory. The SA36CH datasheet documents full test conditions and pass criteria.
What is the maximum steady-state power dissipation for the SA36CH at elevated temperatures?
The SA36CH has a steady-state power dissipation (PD) of 3 W when mounted on 10 × 10 mm copper pads per lead at TL = 75°C. Derating applies above 25°C ambient per the pulse derating curve in the datasheet - e.g., PD drops to ~2.1 W at TA = 100°C. This rating supports continuous operation in thermally demanding locations such as near power converters or motor drivers where the SA36CH may absorb residual leakage or low-energy transients.
How does the SA36CH compare to the SA36A variant?
The SA36CH and SA36A share identical electrical parameters - VWM = 36 V, VBR = 40.0–44.2 V, VC = 58.1 V @ 9.0 A - but differ in qualification and marking. The SA36CH includes AEC-Q101 qualification and "H" suffix; the SA36A is industrial-grade only. Both use DO-204AC packaging and have the same pinout and thermal characteristics. For automotive programs, SA36CH is required; SA36A suffices for non-automotive applications where qualification is not mandated.
SA36CH 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):
- 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)
SA36CH FAQ
1.How can I place an order for SA36CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SA36CH 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 SA36CH reliable?
The price and inventory of SA36CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA36CH is usually 5 days.
3.What payment methods are accepted for SA36CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA36CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA36CH?
SA36CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA36CH 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 SA36CH?
For technical support, including SA36CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA36CH requirements.
6.How does Aetrix verify that SA36CH is sourced from the original manufacturer or authorized distributors?
All SA36CH 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 SA36CH meets industry standards.
7.What is the process for return or replacement of SA36CH?
All SA36CH units undergo pre-shipment inspection (PSI). If there is an issue with SA36CH, 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 SA36CH part is unused and in its original packaging.
Return procedure for SA36CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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