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Taiwan Semiconductor Corporation SA36
- Part No.:
- SA36
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA36.pdf
- Description:
- 500W, 44.5V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,775
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Product details
Overview
SA36 from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, with 36V working stand-off voltage (VWM), 40.0–48.9V breakdown voltage (VBR @ 1mA), 64.5V clamping voltage at 8.1A peak pulse current, and <1.0ps response time. It protects automotive and industrial power rails against ESD, EFT, and inductive switching transients.
For engineers reviewing the SA36 datasheet, SA36 pinout, SA36 application, or SA36 equivalent, this page delivers verified electrical parameters, mechanical package data, real-world protection use cases, and validated alternative parts for circuit design and BOM optimization.
Technical Context
The SA36 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR range (40.0–48.9V). Its low dynamic impedance enables rapid clamping to ≤64.5V under 10/1000μs surge, limiting energy delivered to downstream ICs.
Designed for high-reliability environments, it meets AEC-Q101 stress requirements, supports junction temperatures up to +175°C, and features pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before leakage rises significantly |
| VBR @ IT=1mA | 40.0–48.9 V - Breakdown threshold defining turn-on point for transient suppression |
| VC @ IPPM=8.1A | 64.5 V - Clamped voltage during 10/1000μs surge; determines maximum stress on protected IC |
| PPK | 500 W - Peak pulse power handling per single non-repetitive 10/1000μs event |
| IR @ VWM | <1 μA - Reverse leakage ensures minimal standby power loss in battery-powered systems |
| TJ max | +175 °C - Enables operation in under-hood automotive or high-ambient industrial locations |
| Response time | <1.0 ps - Sub-picosecond turn-on guarantees suppression before sensitive logic is damaged |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Meets UL 94V-0 flammability rating and RoHS/halogen-free compliance (IEC 61249-2-21).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-side return path in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 36V rail); conducts only during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option available (SA36H) | Validated for automotive powertrain and body electronics per stress test requirements |
| 500W peak pulse power (10/1000μs) | Withstands high-energy surges from load dump or inductive kick without degradation |
| Clamping ratio VC/VBR ≈ 1.45 | Low clamping ratio minimizes voltage overshoot across protected IC inputs |
| Ultra-fast response <1.0ps | Engages before ESD or EFT pulses propagate into system-level signal paths |
| RoHS and halogen-free | Complies with environmental regulations for global industrial and automotive shipments |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 36V battery-fed control module exposed to ISO 7637-2 load dump and ISO 10605 ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 36V supply rail and ground to clamp transients before they reach PMIC or MCU power pins. Use Value: Limits rail voltage to ≤64.5V during 500W surges, preventing latch-up or oxide breakdown in 36V-rated power management ICs. | Use Scenario: Analog input channel of programmable logic controller subjected to field-wiring induced EFT bursts. IC Role / Device Role / Timing Role: SA36 installed at connector entry point to shunt fast transients away from precision ADC front-end and isolation amplifier. Use Value: Sub-1ps response ensures clamping occurs within first nanosecond of EFT edge, preserving signal integrity and measurement accuracy. |
| LED Driver Overvoltage Clamp | DC Motor Controller Flyback Suppression |
Use Scenario: Constant-current LED driver board powered from 36V bus, vulnerable to backfeed or hot-swap transients. IC Role / Device Role / Timing Role: SA36 placed across input terminals to absorb positive-going spikes generated during cable disconnect/reconnect. Use Value: 64.5V clamping prevents overvoltage stress on buck controller ICs rated for 40V absolute maximum input. | Use Scenario: H-bridge motor driver with 36V supply experiencing inductive flyback during PWM turn-off. IC Role / Device Role / Timing Role: SA36 connected anode-to-ground, cathode-to-drain node to clamp flyback voltage spikes at MOSFET drain. Use Value: 500W surge rating handles repetitive 8.3ms half-sine surges up to 70A IFSM, protecting gate drivers and sense resistors. |
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 (not DO-15); 36V VWM, 58.1V VC @ 8.1A, 400W PPK | Lower peak power rating; requires PCB layout change due to SMD footprint | Select if surface-mount assembly is preferred and 400W surge margin suffices |
| ON Semiconductor 1.5KE36A | DO-201AD package; 36V VWM, 58.1V VC @ 8.1A, 1500W PPK, higher IR (5μA) | Higher surge capacity but larger through-hole package and higher leakage | Select for legacy designs needing higher energy absorption and existing DO-201AD footprint |
Compared with SMAJ36A and 1.5KE36A, the SA36 offers optimal balance of 500W surge capability, ultra-low leakage (<1μA), and compact DO-15 through-hole form factor-ideal for space-constrained, low-power automotive and industrial modules where thermal derating and long-term reliability are critical.
Availability
SA36 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial PLC I/O conditioning, LED driver overvoltage clamp, and DC motor controller flyback suppression requiring stable component supply and consistent AEC-Q101-compliant sourcing.
Supply support for SA36 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 robust transient immunity in harsh environments-designed to meet AEC-Q101, deliver precise clamping performance across temperature, and support long-lifecycle deployments in automotive ECUs and factory automation equipment.
FAQ
What is the breakdown voltage range of the SA36?
The SA36 has a specified breakdown voltage (VBR) range of 40.0 V to 48.9 V at 1 mA test current, measured per ANSI/IEEE C62.35. This range defines the minimum and maximum voltage at which the device enters avalanche conduction under controlled DC conditions, ensuring predictable clamping behavior across manufacturing lots and temperature extremes.
Is the SA36 unidirectional or bidirectional?
The SA36 is a unidirectional TVS diode, indicated by absence of "CA" or "C" suffix and presence of cathode band marking. It conducts only in reverse bias above VBR and must be oriented with cathode toward the protected line. Bidirectional variants (e.g., SA36CA) are separate part numbers with symmetrical characteristics in both directions.
Does the SA36 meet AEC-Q101 qualification?
The base SA36 is not AEC-Q101 qualified; however, the SA36H variant-identical in electrical and mechanical specifications-is explicitly qualified per AEC-Q101 Rev D. Engineers requiring automotive-grade reliability must specify SA36H, which undergoes extended stress testing including HTGB, AC-H3TRB, and temperature cycling.
What is the clamping voltage of the SA36 under standard surge conditions?
The SA36 clamps to a maximum of 64.5 V at 8.1 A peak pulse current (IPPM), tested with the standardized 10/1000 μs double-exponential waveform. This VC value represents the upper limit of voltage seen by downstream components during worst-case surge events and is critical for verifying compatibility with protected ICs' absolute maximum ratings.
Can the SA36 replace the SA36A in a design?
No-the SA36 and SA36A are distinct variants: SA36 has VBR min/max = 40.0–48.9 V, while SA36A has tighter VBR = 40.0–44.2 V. The SA36A offers lower clamping uncertainty and reduced temperature coefficient (41 mV/°C vs. 46 mV/°C), making it preferable for precision-critical applications. Interchange requires revalidation of worst-case clamping margin.
SA36 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:
- General Purpose
- 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)
SA36 FAQ
1.How can I place an order for SA36 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA36 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 SA36 reliable?
The price and inventory of SA36 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA36 is usually 5 days.
3.What payment methods are accepted for SA36?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA36 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA36?
SA36 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA36 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 SA36?
For technical support, including SA36 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA36 requirements.
6.How does Aetrix verify that SA36 is sourced from the original manufacturer or authorized distributors?
All SA36 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 SA36 meets industry standards.
7.What is the process for return or replacement of SA36?
All SA36 units undergo pre-shipment inspection (PSI). If there is an issue with SA36, 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 SA36 part is unused and in its original packaging.
Return procedure for SA36:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA36 Tags
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