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Taiwan Semiconductor Corporation SA36A
- Part No.:
- SA36A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA36A.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,661
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Product details
Overview
SA36A from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode with 36V working stand-off voltage, 40.0–44.2V breakdown voltage at 1mA test current, and 58.1V maximum clamping voltage at 9.0A peak pulse current. It uses DO-204AC (DO-15) package and protects automotive and industrial power rails against ESD and inductive switching transients.
For engineers reviewing the SA36A datasheet, SA36A pinout, SA36A application, or SA36A equivalent, this device is selected for robust overvoltage protection in 24V/36V DC systems where low clamping voltage, sub-1μA leakage above 10V, and AEC-Q101 qualification are required.
Technical Context
The SA36A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its VBR range (40.0–44.2V), then clamping transients to ≤58.1V at 9.0A (10/1000μs waveform). Its low dynamic impedance ensures effective energy diversion during fast EFT events.
Designed for surface-mount compatibility with DO-15 footprint, it supports steady-state power dissipation of 3W at TL = 75°C on 10×10 mm copper pads and withstands 70A non-repetitive forward surge (8.3 ms half-sine). Junction temperature range is –55°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR @ IT=1mA | 40.0–44.2 V - Breakdown threshold defining turn-on sensitivity and system margin |
| VC @ IPPM=9.0A | 58.1 V - Clamped voltage during 10/1000μs surge, limiting stress on downstream ICs |
| PPK | 500 W - Peak pulse power handling per single 10/1000μs transient event |
| IR @ VWM | <1 μA - Negligible leakage current ensuring minimal standby power loss |
| TJ max | +175 °C - Enables operation in under-hood automotive environments and high-ambient industrial enclosures |
Pinout & Package
Package: DO-204AC (DO-15), axial-lead, epoxy-molded case with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; defines unidirectional conduction direction |
| Cathode | Protected line input | Connected to supply rail (e.g., 24V/36V bus); absorbs positive transients toward ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Clamping voltage ≤58.1V at 9.0A | Provides tighter overvoltage margin than standard 36V-rated TVS devices, reducing risk of IC latch-up |
| Response time <1.0 ps (0→VBR) | Ensures suppression initiates before nanosecond-scale ESD pulses propagate into sensitive circuitry |
| RoHS & halogen-free (IEC 61249-2-21) | Complies with global environmental regulations and enables use in green manufacturing processes |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24V/36V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive surges. Use Value: Limits transient voltage to ≤58.1V, preserving integrity of 40V-rated DC-DC converters and microcontrollers. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Standoff protection element on field-side signal lines, absorbing repetitive 10/1000μs surges up to 500W. Use Value: Prevents false triggering and latch-up in optocouplers and level translators due to <1μA leakage at 36V. |
| LED Driver Overvoltage Suppression | Telecom Power Interface Protection |
Use Scenario: Shielding constant-current LED drivers in streetlight systems from lightning-induced surges on AC/DC front-ends. IC Role / Device Role / Timing Role: Primary clamping device across bulk capacitor input, triggered by >40V transients. Use Value: Maintains system uptime by surviving 500W pulses without degradation, supported by 175°C junction rating. | Use Scenario: Securing 48V PoE-powered equipment interfaces against EFT and surge coupling from adjacent data lines. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; SA36A used for unidirectional DC bias rail protection only. Use Value: Delivers predictable clamping performance with ±5% VBR tolerance and <10mV/°C tempco, critical for stable telecom power budgets. |
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 DO-214AC package; 36V VWM, 58.1V VC @ 9.2A, but rated for 400W peak power | Limited to lower-energy transients; unsuitable for full 500W load-dump events | Select SA36A when 500W surge rating and AEC-Q101 compliance are mandatory |
| P6SMB36A | DO-214AA package; identical VWM/VC specs but 600W rating and higher IR (5μA @ 36V) | Higher leakage may impact ultra-low-power sensor nodes; larger footprint requires layout change | Choose SA36A for space-constrained designs needing DO-15 footprint and sub-1μA leakage |
Compared with SMAJ36A and P6SMB36A, the SA36A uniquely combines 500W surge capability, DO-15 form factor, AEC-Q101 qualification, and <1μA leakage-making it optimal for automotive body control modules and industrial 24V fieldbus nodes where reliability, size, and low standby loss are jointly critical.
Availability
SA36A is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and LED lighting systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SA36A 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 high-reliability transient suppression in harsh environments, emphasizing low clamping voltage, tight parametric tolerances, and AEC-Q101 validation for automotive power systems.
FAQ
What is the breakdown voltage range of the SA36A?
The SA36A has a specified breakdown voltage (VBR) range of 40.0 V to 44.2 V at 1 mA test current, measured per ANSI/IEEE C62.35. This range ensures consistent turn-on behavior across production lots and supports design margining for 36V nominal systems.
Is the SA36A unidirectional or bidirectional?
The SA36A is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix and confirmed by its cathode-band marking and specification table entries limited to VBR (uni-directional). It conducts only during positive transients on the cathode side relative to anode.
Does the SA36A meet AEC-Q101 requirements?
Yes, the SA36A is AEC-Q101 qualified, as explicitly stated in the product features and ordering code notes ("H" suffix denotes AEC-Q101 qualification). This certification covers stress tests including HTGB, H3TRB, and temperature cycling relevant to automotive under-hood deployment.
What is the maximum clamping voltage of the SA36A at rated surge current?
The SA36A exhibits a maximum clamping voltage (VC) of 58.1 V at 9.0 A peak pulse current (10/1000μs waveform), as listed in the electrical characteristics table. This value defines the upper voltage limit imposed on protected circuitry during standardized surge events.
What package type does the SA36A use?
The SA36A uses the DO-204AC (DO-15) package, a standard axial-leaded plastic case with defined mechanical dimensions, UL 94V-0 molding compound, and pure tin-plated leads compliant with J-STD-002 solderability requirements.
SA36A 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:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 9A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA36A FAQ
1.How can I place an order for SA36A through Aetrix?
Please submit a Request for Quotation (RFQ) for SA36A 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 SA36A reliable?
The price and inventory of SA36A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA36A is usually 5 days.
3.What payment methods are accepted for SA36A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA36A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA36A?
SA36A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA36A 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 SA36A?
For technical support, including SA36A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA36A requirements.
6.How does Aetrix verify that SA36A is sourced from the original manufacturer or authorized distributors?
All SA36A 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 SA36A meets industry standards.
7.What is the process for return or replacement of SA36A?
All SA36A units undergo pre-shipment inspection (PSI). If there is an issue with SA36A, 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 SA36A part is unused and in its original packaging.
Return procedure for SA36A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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