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Taiwan Semiconductor Corporation 1.5SMC36A
- Part No.:
- 1.5SMC36A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36A.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,147
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Product details
Overview
1.5SMC36A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 34.2–37.8 V breakdown voltage (VBR), 30.8 V working stand-off voltage (VWM), 49.9 V maximum clamping voltage (VC) at 31 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 µs waveform - deployed in telecom front-ends and industrial I/O interfaces.
For engineers reviewing the 1.5SMC36A datasheet, 1.5SMC36A pinout, 1.5SMC36A application, or 1.5SMC36A equivalent, this page delivers verified electrical specs, DO-214AB package details, clamping behavior under surge conditions, and validated alternatives for ESD and lightning-induced transients in 24–48 V systems.
Technical Context
The 1.5SMC36A operates as a unidirectional avalanche diode with glass-passivated junction, enabling sub-nanosecond response (<1.0 ps) to fast-rising transients. Its 150 °C maximum junction temperature and JESD201 Class 2 whisker resistance support reliability in automotive-grade ambient environments.
It meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for automotive electronics, and its 1 μA maximum leakage at VWM ensures minimal standby power loss in always-on circuits - critical for battery-backed sensors and remote I/O modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V - defines guaranteed avalanche conduction onset across production lot; used to set margin above 30.8 V system operating rail |
| VWM | 30.8 V - maximum continuous reverse voltage before significant leakage; sets upper limit for 24 V nominal bus operation |
| VC @ IPPM | 49.9 V @ 31 A - clamped voltage during 10/1000 µs surge; determines protected IC's absolute maximum input rating requirement |
| PPK | 1500 W - peak pulse power handling per single transient; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity design |
| IR @ VWM | <1 µA - ultra-low reverse leakage ensures no measurable loading on 30.8 V bias networks or high-impedance monitoring inputs |
| TJ max | +150 °C - enables placement near heat-generating components (e.g., DC-DC converters) without thermal derating penalties |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band; weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference node for unidirectional clamping | Connected to system ground or low-side return path; must maintain low-inductance path to handle 31 A surge current |
| Cathode | Protected line input terminal | Connected directly to the line being protected (e.g., 24 V supply rail or RS-485 A/B); cathode band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps - ensures clamping activation before transient energy couples into downstream ICs, critical for protecting USB PHYs and CAN transceivers |
| Glass passivated junction | Enhances long-term stability of VBR and leakage under thermal cycling and humidity stress per J-STD-020 MSL Level 1 |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1/2a/2b/3a/3b), enabling drop-in use in vehicle body control modules |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - required for CE-marked industrial equipment and consumer electronics |
Applications
| Industrial PLC Analog Input Protection | Automotive Body Control Module Power Rail |
|---|---|
Use Scenario: 4–20 mA current loop interface exposed to field wiring surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V auxiliary supply feeding op-amp signal conditioning circuitry. Use Value: Limits transient voltage to ≤49.9 V during 1 kV/500 A surge events, preventing latch-up or damage to precision ADC drivers and isolators. |
Use Scenario: 12 V/24 V battery-connected microcontroller power domain subjected to load dump per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: First-stage clamping device upstream of LDO regulators and CAN transceivers. Use Value: Absorbs up to 1500 W peak energy while holding rail voltage below 50 V, preserving reset logic integrity and avoiding brownout resets. |
| Telecom Remote Radio Unit DC Feed | Smart Energy Meter Communication Port |
Use Scenario: -48 V DC power feed to remote radio head in cellular base station, subject to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional TVS on DC input line, paired with bidirectional TVS on data lines. Use Value: Clamps negative-going transients to ground with 31 A peak current capacity, maintaining <1 µA leakage to avoid affecting -48 V regulation accuracy. |
Use Scenario: RS-485 port on utility meter exposed to induced surges from nearby power distribution lines. IC Role / Device Role / Timing Role: Line-to-ground protection on VCC rail feeding isolated RS-485 transceiver. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV differential) by limiting clamped voltage to 49.9 V, within transceiver's absolute max rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A (Bourns) | Same DO-214AA package; 36 V VBR range (34.2–37.8 V), identical 1500 W PPK, but higher VC = 58.1 V @ 26 A | Higher clamping voltage reduces margin for 3.3 V or 5 V logic rails; better suited for 48 V systems where 58.1 V is acceptable | Select SMBJ36A only if board layout uses DO-214AA footprint and system VMAX > 58 V |
| 1.5KE36A (ON Semiconductor) | Through-hole DO-15 package; same 36 V VBR and 1500 W rating, but slower response (>1 ns) and higher thermal resistance (RθJA = 60 °C/W vs. 50 °C/W) | Not suitable for high-density SMT designs; requires PCB real estate and wave-solder process; lower power density limits placement near hot components | Choose 1.5KE36A only for legacy through-hole assemblies or prototyping where reflow compatibility is not required |
Compared with SMBJ36A and 1.5KE36A, the 1.5SMC36A offers superior clamping performance (49.9 V vs. 58.1 V), lower thermal resistance, and SMT compatibility - making it optimal for space-constrained, high-reliability 24–48 V industrial and automotive power rail protection.
Availability
1.5SMC36A is available at Aetrix Electronics and suitable for industrial PLC analog inputs, automotive body control modules, telecom DC feeds, and smart energy meter communication ports requiring stable component supply and full traceability.
Supply support for 1.5SMC36A 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 - serving industrial, automotive, and telecom markets since 1979.
The 1.5SMC series was developed for high-power, surface-mount transient suppression in harsh environments - emphasizing low clamping voltage, ISO 7637-2 compliance, and J-STD-020 MSL Level 1 robustness for automated manufacturing.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC36A?
The 1.5SMC36A has a specified breakdown voltage (VBR) range of 34.2 V to 37.8 V at 1.0 mA test current, representing ±5% tolerance around the nominal 36 V rating. This tight spread ensures consistent clamping onset across production lots and simplifies margining for 30.8 V working stand-off voltage applications.
Is the 1.5SMC36A suitable for bidirectional transient protection?
No - the 1.5SMC36A is a unidirectional TVS diode intended for DC rail protection with defined anode-to-cathode polarity. For bidirectional AC or data-line protection, Taiwan Semiconductor offers the 1.5SMC36CA variant; using 1.5SMC36A in reverse-biased configurations risks permanent junction damage due to lack of symmetrical avalanche capability.
What is the maximum clamping voltage of the 1.5SMC36A under surge conditions?
The 1.5SMC36A exhibits a maximum clamping voltage (VC) of 49.9 V when subjected to its rated 31 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at TA = 25°C and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Does the 1.5SMC36A meet automotive qualification standards?
Yes - the 1.5SMC36A is explicitly tested and compliant with ISO 7637-2 for automotive transient immunity (Pulse 1, 2a, 2b, 3a, 3b). Its glass-passivated junction, MSL Level 1 moisture sensitivity rating, and JESD201 Class 2 whisker resistance further support AEC-Q101 readiness when used within its rated temperature and power limits.
How does the 1.5SMC36A compare to the 1.5SMC36 in terms of leakage current?
The 1.5SMC36A specifies ≤1 µA maximum reverse leakage current (IR) at its 30.8 V working stand-off voltage (VWM), whereas the non-A version (1.5SMC36) allows up to 1 µA at only 29.1 V VWM. The "A" suffix denotes tighter VBR tolerance and improved leakage control - critical for low-power sensor nodes and battery-operated devices where standby current matters.
1.5SMC36A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 31A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC36A FAQ
1.How can I place an order for 1.5SMC36A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36A 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 1.5SMC36A reliable?
The price and inventory of 1.5SMC36A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36A is usually 5 days.
3.What payment methods are accepted for 1.5SMC36A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36A?
1.5SMC36A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36A 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 1.5SMC36A?
For technical support, including 1.5SMC36A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36A requirements.
6.How does Aetrix verify that 1.5SMC36A is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36A 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 1.5SMC36A meets industry standards.
7.What is the process for return or replacement of 1.5SMC36A?
All 1.5SMC36A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36A, 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 1.5SMC36A part is unused and in its original packaging.
Return procedure for 1.5SMC36A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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