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Taiwan Semiconductor Corporation 1.5SMC36
- Part No.:
- 1.5SMC36
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36.pdf
- Description:
- 1500W, 36V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:9,760
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Product details
Overview
1.5SMC36 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-level surge protection in DC power rails and signal lines. It features a 32.4–39.6 V breakdown voltage (VBR), 29.1 V working stand-off voltage (VWM), 52.0 V maximum clamping voltage (VC) at 30 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 µs waveform - deployed in telecom interfaces, industrial I/O modules, and automotive body control units.
For engineers reviewing the 1.5SMC36 datasheet, 1.5SMC36 pinout, 1.5SMC36 application, or 1.5SMC36 equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, leakage current ≤1 µA at VWM, DO-214AB (SMC) package thermal resistance (RθJA = 50 °C/W), and unidirectional polarity marking.
Technical Context
This TVS operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1.0 ps) to ESD and lightning-induced transients. Its unidirectional configuration provides reverse-biased clamping only, with forward voltage drop of 3.5 V at 50 A for this voltage range (per spec note).
The device complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, supporting lead-free reflow assembly. Thermal design relies on RθJC = 15 °C/W and RθJA = 50 °C/W, requiring adequate PCB copper area for 6.5 W steady-state dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 32.4 V / 39.6 V - defines minimum and maximum voltage at which avalanche conduction begins under 1 mA test current |
| VWM | 29.1 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VC@IPPM | 52.0 V at 30 A - clamping voltage during 10/1000 µs surge, limiting downstream voltage stress |
| PPK | 1500 W - peak transient power handling capability per single non-repetitive pulse |
| IR@VWM | ≤1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | 150 °C - maximum junction temperature defining thermal derating envelope for reliability |
| RθJA | 50 °C/W - thermal resistance from junction to ambient, guiding PCB copper pour requirements |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Case meets UL 94V-0 flammability rating; matte tin-plated leads comply with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional clamp configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., +12 V rail); conducts when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling |
| Clamping response <1.0 ps | Protects sensitive ICs before ESD or fast transients propagate through PCB traces |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1/2a/2b/3a/3b) |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives for environmentally compliant manufacturing |
| DO-214AB mechanical robustness | Supports automated placement and withstands 200 A surge (IFSM) in unidirectional mode |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting 12 V CAN transceiver power pins against load dump and inductive switching spikes. IC Role / Device Role: Primary overvoltage clamp on VCC rail, placed upstream of LDO regulator. Use Value: Limits transient voltage to ≤52.0 V, preventing latch-up or damage to 3.3 V/5 V logic supply circuitry. | Use Scenario: Safeguarding 24 V digital input channels from field-wiring induced surges and ESD. IC Role / Device Role: Front-end TVS on optocoupler input side, shunting energy before current-limiting resistor. Use Value: Maintains ≤1 µA leakage at 29.1 V stand-off, preserving input threshold accuracy and reducing false triggering. |
| Telecom Ethernet PHY Interface | Consumer Appliance Power Supply |
Use Scenario: Clamping induced surges on PoE-powered Ethernet PHY bias rails. IC Role / Device Role: Unidirectional TVS on 3.3 V or 5 V auxiliary supply feeding magnetics bias winding. Use Value: Delivers 1500 W pulse handling with 52.0 V clamping, keeping PHY ICs within absolute maximum ratings during lightning tests. | Use Scenario: Suppressing switch-mode power supply turn-on transients on main DC bus (e.g., 36 V intermediate rail). IC Role / Device Role: Secondary-side TVS across bulk capacitor terminals to absorb ringing and MOSFET drain spikes. Use Value: Withstands 1500 W pulses and maintains thermal stability up to 150 °C junction temperature in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | 600 W rating, DO-214AA (SMB) package, 58.1 V clamping at 10.3 A | Lower power handling and smaller footprint; suitable for space-constrained but lower-energy surge environments | Select SMBJ36A when board space is limited and peak surge energy is ≤600 W |
| 1.5KE36A | Through-hole TO-204AA (DO-41), 1500 W, 58.1 V clamping at 25.9 A | Requires through-hole assembly; higher thermal mass but no SMT reflow compatibility | Choose 1.5KE36A for prototyping or legacy through-hole designs where rework tolerance is prioritized |
Compared with 1.5SMC36, SMBJ36A offers reduced surge capacity in a smaller package, while 1.5KE36A delivers identical power rating in a through-hole form factor - both require layout and thermal redesign, and neither is pin-compatible.
Availability
1.5SMC36 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial programmable logic controllers, and telecom infrastructure equipment requiring stable component supply and full traceability.
Supply support for 1.5SMC36 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, specializing in TVS diodes, rectifiers, and power MOSFETs since 1979.
The 1.5SMC series targets high-reliability surface-mount surge protection across automotive, industrial, and communications markets, emphasizing ISO 7637-2 compliance, low leakage, and robust thermal performance in DO-214AB packaging.
FAQ
What is the clamping voltage of the 1.5SMC36 under standard surge conditions?
The 1.5SMC36 has a maximum clamping voltage (VC) of 52.0 V when subjected to a 10/1000 µs waveform peak impulse current (IPPM) of 30 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is the 1.5SMC36 unidirectional or bidirectional, and how is polarity marked?
The 1.5SMC36 is a unidirectional TVS diode, with polarity indicated by a cathode band on the DO-214AB (SMC) package. The cathode terminal connects to the protected line (e.g., 36 V rail), while the anode connects to ground or return. Bidirectional variants use "C" or "CA" suffixes (e.g., 1.5SMC36C), which are not interchangeable with the 1.5SMC36.
Does the 1.5SMC36 meet automotive surge immunity standards?
Yes, the 1.5SMC36 meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for automotive body electronics, infotainment, and powertrain subsystems. Its 1500 W peak power rating and 52.0 V clamping voltage ensure robust protection against load dump, alternator transients, and inductive switching events defined in that standard.
What is the maximum steady-state power dissipation for the 1.5SMC36?
The 1.5SMC36 has a steady-state power dissipation (PD) rating of 6.5 W at TA = 25 °C. This value decreases with rising ambient temperature per the derating curve (Fig.2), and actual usable power depends on PCB copper area, airflow, and thermal interface - design must ensure junction temperature remains ≤150 °C under worst-case operating conditions.
Can the 1.5SMC36 be used in place of the 1.5SMC36A?
No - the 1.5SMC36 and 1.5SMC36A are not interchangeable. The 1.5SMC36A has tighter VBR tolerance (34.2–37.8 V vs. 32.4–39.6 V), higher VWM (30.8 V vs. 29.1 V), and lower clamping voltage (49.9 V vs. 52.0 V). Substituting one for the other may compromise surge margin or cause premature conduction in precision voltage-sensitive applications.
1.5SMC36 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):
- 29.1V
- Voltage - Breakdown (Min):
- 32.4V
- Voltage - Clamping (Max) @ Ipp:
- 52V
- Current - Peak Pulse (10/1000µs):
- 30A
- 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)
1.5SMC36 FAQ
1.How can I place an order for 1.5SMC36 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36 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 1.5SMC36 reliable?
The price and inventory of 1.5SMC36 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36 is usually 5 days.
3.What payment methods are accepted for 1.5SMC36?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36?
1.5SMC36 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36 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 1.5SMC36?
For technical support, including 1.5SMC36 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36 requirements.
6.How does Aetrix verify that 1.5SMC36 is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36 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 1.5SMC36 meets industry standards.
7.What is the process for return or replacement of 1.5SMC36?
All 1.5SMC36 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36, 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 1.5SMC36 part is unused and in its original packaging.
Return procedure for 1.5SMC36:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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