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Taiwan Semiconductor Corporation 1.5SMC36CA
- Part No.:
- 1.5SMC36CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CA.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,671
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Product details
Overview
1.5SMC36CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 36V working stand-off voltage (VWM), 34.2–37.8V breakdown voltage (VBR), 49.9V clamping voltage at 31A peak pulse current, and 1500W peak pulse power rating per 10/1000μs waveform - deployed in telecom interface protection and industrial I/O conditioning.
For engineers reviewing the 1.5SMC36CA datasheet, 1.5SMC36CA pinout, 1.5SMC36CA application, or 1.5SMC36CA equivalent, key selection criteria include bidirectional clamping performance, DO-214AB package thermal resistance (RθJC = 15°C/W), compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b, and leakage current ≤1μA at 30.8V.
Technical Context
The 1.5SMC36CA operates as a symmetrical avalanche diode, delivering bidirectional clamping without polarity dependence. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low temperature coefficient (0.099%/°C), enabling predictable response across –55°C to +150°C junction temperatures.
It sustains 1500W non-repetitive peak pulse power per 10/1000μs waveform, with fast sub-1ps response time and <1μA blocking leakage above 30.8V. Thermal design is supported by RθJA = 50°C/W and RθJC = 15°C/W ratings, validated under JEDEC JESD22-A108 conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.8 V - Maximum continuous DC or RMS voltage the device blocks without conduction |
| VBR min/max | 34.2 V / 37.8 V @ 1 mA - Confirmed avalanche onset range ensuring reliable turn-on before system damage |
| VC @ IPPM | 49.9 V @ 31 A - Clamped voltage during 10/1000μs surge, limiting downstream stress to safe levels |
| PPK | 1500 W - Peak pulse power handling capability per standard IEC 61000-4-5 and ISO 7637-2 waveforms |
| IR @ VWM | <1 μA - Ultra-low leakage preserves signal integrity and minimizes standby power loss |
| Package | DO-214AB (SMC) - Surface-mount outline with 0.210 g mass, UL 94V-0 molding, and matte tin leads |
| TJ max | +150 °C - Maximum junction temperature enabling operation in harsh industrial environments |
Pinout & Package
1.5SMC36CA uses the DO-214AB (SMC) surface-mount package: molded epoxy case with cathode band marking (bidirectional function indicated by "CA" suffix; no polarity-dependent terminals). Leads are matte tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals; either side serves as anode or cathode depending on transient polarity |
| Cathode band marking | Manufacturing orientation indicator | Present for traceability only; does not define unidirectional behavior in CA-suffix devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating lines without external polarity management |
| ISO 7637-2 compliance | Validated against automotive load-dump and switching transient pulses (Pulse 1, 2a, 2b, 3a, 3b) |
| Glass passivated junction | Ensures long-term VBR stability and low leakage drift over temperature and lifetime |
| Moisture sensitivity level 1 | Eliminates bake requirements prior to reflow; supports standard SMT assembly without preconditioning |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant production |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24V digital input channels in programmable logic controllers from inductive kickback and ESD events. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed directly at connector entry point to shunt transients before reaching optocoupler or MCU GPIO. Use Value: Limits clamped voltage to 49.9V, well below 60V absolute maximum rating of common industrial isolators and level translators. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs in body electronics exposed to battery load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional transient suppressor bridging VCC and GND near BCM power entry, absorbing ISO 7637-2 Pulse 5a energy. Use Value: Withstands 1500W peak pulse and maintains <1μA leakage at 30.8V, preserving sleep-mode current budgets. |
| Telecom Ethernet PHY Interface | Smart Meter Power Supply Input |
Use Scenario: Secondary-level surge protection on 12V bias rails feeding Ethernet PHY ICs in residential gateways and ONTs. IC Role / Device Role / Timing Role: Fast-response TVS placed after primary MOV filtering to clamp residual ringwave transients (<1ps response). Use Value: Clamps to 49.9V within nanoseconds, preventing latch-up or oxide breakdown in 12V-tolerant PHY analog front-ends. |
Use Scenario: DC input rail protection in ANSI C12.20-compliant smart meters subjected to utility grid surges and lightning-induced coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12–24V meter supply, coordinated with upstream fuse and PTC. Use Value: 1500W rating handles 10/1000μs surges up to 31A while maintaining thermal safety via RθJC = 15°C/W path to PCB copper. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA (Bourns) | Same DO-214AA package; 36V VWM, 400W PPK rating (vs. 1500W); higher RθJA = 65°C/W | Limited to lower-energy transients (IEC 61000-4-2 contact discharge only); unsuitable for ISO 7637-2 Pulse 5a | Select when board space is constrained and surge threat level is limited to ESD-only environments |
| SMCJ36CA (Littelfuse) | Identical DO-214AB package; same 36V VWM, 1500W PPK, and 49.9V VC; tighter VBR tolerance (±3.5% vs. ±5%) | Validated for MIL-STD-883H Method 3015.8 ESD testing; broader automotive qualification history | Prefer for mission-critical automotive or defense designs requiring extended reliability documentation |
Compared with SMBJ36CA and SMCJ36CA, the 1.5SMC36CA delivers identical clamping performance and package compatibility but offers cost-optimized industrial qualification with full ISO 7637-2 coverage - making it ideal for high-volume industrial and telecom equipment where certification depth is balanced with procurement efficiency.
Availability
1.5SMC36CA is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom Ethernet PHY interface applications requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for 1.5SMC36CA 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 - headquartered in Hsinchu Science Park with global distribution and AEC-Q200-qualified production lines.
The 1.5SMCxxCA series was developed for high-reliability surface-mount surge protection in automotive, industrial, and communications infrastructure - emphasizing robustness, tight parameter distributions, and seamless SMT integration.
FAQ
What is the clamping voltage of the 1.5SMC36CA under maximum rated surge current?
The 1.5SMC36CA has a maximum clamping voltage (VC) of 49.9 V at 31 A peak pulse current (IPPM) under the standardized 10/1000 μs double-exponential waveform. This value is measured per IEC 61000-4-5 and ensures downstream circuitry remains below critical voltage thresholds during surge events. The 1.5SMC36CA achieves this with sub-1 ps response time and stable thermal derating up to +150°C junction temperature.
Is the 1.5SMC36CA unidirectional or bidirectional, and how is polarity identified?
The 1.5SMC36CA is a bidirectional TVS diode, indicated by the "CA" suffix per Taiwan Semiconductor's naming convention. Unlike unidirectional variants (e.g., 1.5SMC36C), it provides symmetrical clamping in both polarities - eliminating need for orientation during placement. The cathode band marking on the DO-214AB package is retained for traceability only and carries no functional polarity meaning in the 1.5SMC36CA.
Does the 1.5SMC36CA meet automotive transient immunity standards?
Yes, the 1.5SMC36CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a (sudden load release), Pulse 2b (alternator field decay), Pulse 3a (capacitive coupled noise), and Pulse 3b (battery line spikes). Its 1500W peak pulse rating and 49.9V clamping voltage make it suitable for protecting 24V automotive subsystems including body control modules and infotainment power supplies.
What is the maximum leakage current specification for the 1.5SMC36CA at its working voltage?
The 1.5SMC36CA exhibits a maximum blocking leakage current (IR) of 1 μA at its rated working stand-off voltage of 30.8 V (VWM). This ultra-low leakage is confirmed per electrical specifications table and supports use in battery-powered or low-quiescent-current systems such as smart meters and wireless sensors where standby power integrity is critical.
Can the 1.5SMC36CA be used in place of the 1.5SMC36C in existing designs?
No - the 1.5SMC36CA and 1.5SMC36C are not interchangeable without circuit review. While both share the same VWM and package, the 1.5SMC36C is unidirectional and requires correct anode/cathode orientation, whereas the 1.5SMC36CA is bidirectional with symmetrical characteristics. Substituting one for the other may result in improper clamping or failure to protect reverse-polarity transients unless layout and system grounding are verified.
1.5SMC36CA 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:
- -
- Bidirectional Channels:
- 1
- 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)
1.5SMC36CA FAQ
1.How can I place an order for 1.5SMC36CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CA 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 1.5SMC36CA reliable?
The price and inventory of 1.5SMC36CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36CA is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CA?
1.5SMC36CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CA 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 1.5SMC36CA?
For technical support, including 1.5SMC36CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CA requirements.
6.How does Aetrix verify that 1.5SMC36CA is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CA 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 1.5SMC36CA meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CA?
All 1.5SMC36CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CA, 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 1.5SMC36CA part is unused and in its original packaging.
Return procedure for 1.5SMC36CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36CA Tags
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