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Taiwan Semiconductor Corporation SA36CAH
- Part No.:
- SA36CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA36CAH.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,794
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Product details
Overview
SA36CAH from Taiwan Semiconductor is a bidirectional AEC-Q101-qualified transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, 36V working stand-off voltage (VWM), and clamps to ≤58.1V at 9.0A peak pulse current. It delivers fast response (<5.0ns), low leakage (<1μA @ 36V), and operates from −55°C to +175°C - deployed in automotive lighting and ECU power rail protection.
For engineers reviewing the SA36CAH datasheet, SA36CAH pinout, SA36CAH application, or SA36CAH equivalent, key selection criteria include bidirectional clamping performance at 36V VWM, AEC-Q101 qualification status, DO-15 mechanical compatibility, and verified 500W surge capability per IEC 61000-4-5 Level 4 requirements.
Technical Context
The SA36CAH is a silicon avalanche diode designed for bidirectional transient suppression, with symmetrical breakdown characteristics in both polarities. Its VBR min/max of 40.0V/48.9V at 1mA test current ensures consistent clamping across temperature and unit-to-unit variation, while its 58.1V [email protected] defines the maximum voltage seen by protected circuitry during a 10/1000μs surge.
It features low dynamic impedance under surge conditions, enabling effective energy diversion without thermal runaway. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards, and its pure tin-plated leads comply with J-STD-002 solderability requirements - critical for automotive reflow and wave soldering processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before significant leakage; sets minimum system bus rating for safe integration. |
| VBR (min/max) | 40.0 / 48.9 V @ 1 mA - Confirmed avalanche onset range; guarantees reliable triggering above 36V transients. |
| VC @ IPPM | 58.1 V @ 9.0 A - Clamped voltage during full 500W surge; determines worst-case stress on downstream ICs. |
| PPK | 500 W - Peak pulse power handling per 10/1000μs waveform; meets ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 surge immunity. |
| IR @ VWM | <1 μA - Reverse leakage at 36V; negligible power loss and signal integrity impact in high-impedance sensing paths. |
| TJ max | +175 °C - Maximum junction temperature; supports under-hood automotive placement without derating. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package; compatible with legacy PCB footprints and automated insertion equipment. |
Pinout & Package
DO-204AC (DO-15) package with axial leads; cathode band marking omitted for bidirectional configuration (SAxCAH series). Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance. Weight: 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No polarity dependence - either lead connects to protected line; enables single-component protection of AC or floating DC rails. |
| Lead 1 | Terminal for PCB mounting | Standard axial lead; requires 9.5 mm (0.375") lead length for rated 3W steady-state dissipation per JEDEC mounting condition. |
| Lead 2 | Terminal for PCB mounting | Identical to Lead 1; symmetric construction eliminates orientation constraints during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, lighting, and ADAS modules. |
| 500W 10/1000μs surge rating | Withstands repeated ISO 7637-2 Pulse 5a (50V, 500ms) and IEC 61000-4-5 combination wave surges without degradation. |
| Bidirectional clamping | Enables protection of differential lines (e.g., CAN, LIN) or ungrounded DC buses without external polarity management circuitry. |
| Fast response time | <5.0 ns turn-on from 0 V to VBR - intercepts EFT bursts (IEC 61000-4-4) and ESD events before sensitive logic is latched. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports automotive OEM environmental compliance programs. |
Applications
| Automotive LED Headlamp Driver Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects LED driver ICs and MOSFETs from load dump (ISO 7637-2 Pulse 5a) and alternator ripple-induced transients in 12V/24V vehicle systems. IC Role / Device Role: Bidirectional TVS placed across input supply rail to clamp positive and negative spikes before they reach the DC-DC controller. Use Value: Limits rail voltage to ≤58.1V during 500W surge, preventing overvoltage failure of 60V-rated buck controllers and maintaining functional safety integrity. | Use Scenario: Shields 24V digital input channels in programmable logic controllers from field-wiring induced surges and inductive kickback from solenoid valves. IC Role / Device Role: Standoff protection element mounted at connector entry point, shunting transient energy to ground before reaching optocoupler or MCU GPIO. Use Value: Withstands ≥10,000 surges at 9.0A/58.1V per IEC 61000-4-5, extending channel lifetime and reducing field return rates in harsh factory environments. |
| Automotive Body Control Module (BCM) Power Rail | Smart Building Occupancy Sensor Interface |
Use Scenario: Secures 5V/3.3V internal power domains in BCMs against coupled transients from adjacent high-current circuits (e.g., window motors, HVAC blower). IC Role / Device Role: Secondary-level TVS placed downstream of main fuse and upstream of LDO regulators to suppress residual spikes bypassing primary protection. Use Value: Low 1μA leakage at 36V VWM prevents loading of low-power always-on domains, preserving battery drain budgets in sleep mode. | Use Scenario: Guards PIR and ultrasonic sensor analog front-ends connected to long building wiring runs exposed to lightning-induced surges and EFT noise. IC Role / Device Role: Bidirectional clamping device across differential sensor supply (e.g., 12V ±10%) to maintain common-mode rejection during fast transients. Use Value: Symmetrical 40–48.9V VBR ensures balanced clamping on both supply rails, eliminating offset errors and false triggers in low-voltage analog signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | DO-214AA (SMB) package; 600W rating; VBR 40.0–44.2V; higher thermal mass but larger footprint. | Preferred where board space allows SMB footprint and higher surge margin is needed beyond 500W. | Select SMBJ36CA when upgrading from DO-15 for improved thermal robustness in high-temperature enclosures. |
| P6SMB36CA | Same DO-214AA package as SMBJ36CA; identical electrical specs but different manufacturing lot traceability and AEC-Q101 documentation coverage. | Used in industrial automation where automotive qualification is not mandated but same performance is required. | Choose P6SMB36CA for cost-sensitive non-automotive designs requiring identical clamping behavior and RoHS compliance. |
Compared with SA36CAH, SMBJ36CA offers 20% higher peak power and better thermal dissipation in SMB package, while P6SMB36CA provides equivalent electrical performance with alternate supply chain validation - both require PCB layout change due to different package dimensions.
Availability
SA36CAH is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC input modules, and body control module power rail protection requiring stable component supply and AEC-Q101-compliant surge immunity.
Supply support for SA36CAH 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 headquartered in Hsinchu, Taiwan, specializing in discrete power devices, TVS diodes, rectifiers, and automotive-qualified components since 1979.
The SA Series was developed specifically for automotive and industrial transient suppression, emphasizing AEC-Q101 reliability, tight VBR tolerances, and robust 10/1000μs surge performance in standard axial packages.
FAQ
What does the "C" in SA36CAH signify?
The "C" in SA36CAH denotes bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional SA36AH variants, SA36CAH has no cathode marking and functions identically regardless of terminal orientation, making it ideal for AC-coupled or floating DC applications. This is confirmed in TSC's SA Series datasheet Version L2105, Section 2.
Is SA36CAH suitable for CAN bus line protection?
SA36CAH is not recommended for direct CAN bus line protection because its 36V VWM exceeds typical CAN common-mode voltage limits (±40V max), and its clamping voltage (58.1V) is too high to safeguard ISO 11898-2 transceivers rated for <58V absolute maximum. For CAN, lower-voltage TVS devices such as SMAJ12CA or SMCJ15CA are appropriate. SA36CAH targets 24V/36V power rail protection, not data line ESD.
Does SA36CAH meet AEC-Q101 requirements out-of-the-box?
Yes - the "H" suffix in SA36CAH explicitly indicates full AEC-Q101 qualification per TSC's ordering information (Version L2105, Page 5). This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and ESD per ANSI/ESDA/JEDEC JS-001. No additional qualification is needed; SA36CAH is certified for automotive under-hood and cabin applications.
What is the maximum steady-state power dissipation for SA36CAH?
The maximum steady-state power dissipation (PD) for SA36CAH is 3 W when mounted on 10 × 10 mm copper pads per lead at TL = 75°C, as specified in the Absolute Maximum Ratings table. This value assumes proper PCB thermal relief and is distinct from its 500W peak pulse rating. Continuous DC power must remain below 3 W to avoid junction overheating and parametric drift.
How does SA36CAH compare to SA36A in terms of clamping performance?
SA36CAH clamps to 58.1V at 9.0A, while unidirectional SA36A clamps to 64.5V at 8.1A. The bidirectional SA36CAH achieves lower VC due to optimized junction design for symmetrical conduction - a 6.4V improvement that directly reduces stress on protected 40V-rated ICs. Both share identical VWM (36V) and VBR range (40.0–48.9V), but only SA36CAH supports bipolar surge events without polarity constraints.
SA36CAH 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:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 9A
- 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)
SA36CAH FAQ
1.How can I place an order for SA36CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SA36CAH 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 SA36CAH reliable?
The price and inventory of SA36CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA36CAH is usually 5 days.
3.What payment methods are accepted for SA36CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA36CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA36CAH?
SA36CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA36CAH 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 SA36CAH?
For technical support, including SA36CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA36CAH requirements.
6.How does Aetrix verify that SA36CAH is sourced from the original manufacturer or authorized distributors?
All SA36CAH 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 SA36CAH meets industry standards.
7.What is the process for return or replacement of SA36CAH?
All SA36CAH units undergo pre-shipment inspection (PSI). If there is an issue with SA36CAH, 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 SA36CAH part is unused and in its original packaging.
Return procedure for SA36CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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