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Taiwan Semiconductor Corporation 1.5SMC47C
- Part No.:
- 1.5SMC47C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47C.pdf
- Description:
- 1500W, 47V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,002
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Product details
Overview
1.5SMC47C from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in DC power rails and signal lines. It features a 47V breakdown voltage (min 42.3V, max 51.7V), 1500W peak pulse power rating, 67.8V maximum clamping voltage at 23A, and DO-214AB (SMC) package with glass-passivated junction. It is used in telecom interface protection and industrial I/O modules requiring ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance.
For engineers reviewing the 1.5SMC47C datasheet, 1.5SMC47C pinout, 1.5SMC47C application, or 1.5SMC47C equivalent, this page delivers verified electrical specs, thermal resistance data (RθJA = 50°C/W), clamping behavior under 10/1000µs surge, leakage current (<1µA @ 40.2V), and bidirectional polarity marking - all critical for automotive load-dump and industrial surge immunity design.
Technical Context
The 1.5SMC47C implements a silicon avalanche diode structure optimized for fast transient suppression, with sub-1ps response time and bidirectional conduction symmetry. Its glass-passivated junction ensures stable VBR temperature coefficient (0.101%/°C) and low leakage (<1µA at VWM = 40.2V).
Rated for 1500W peak pulse power (10/1000µs waveform), it operates across –55°C to +150°C junction temperature range and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - enabling direct placement in high-reliability automated SMT lines without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 42.3V / 51.7V - defines guaranteed avalanche onset range at 1mA test current; sets minimum overvoltage threshold before clamping activation |
| VWM | 40.2V - maximum continuous working voltage; system DC rail must stay below this to avoid leakage-induced power loss or thermal stress |
| VC @ IPPM | 67.8V at 23A - clamping voltage during full 1500W surge; determines protected circuit's maximum transient exposure level |
| IPPM | 23A - peak impulse current capability under 10/1000µs waveform; defines surge energy handling limit per event |
| RθJA | 50°C/W - junction-to-ambient thermal resistance; informs PCB copper area and airflow requirements for sustained 6.5W steady-state dissipation |
| TJ max | +150°C - maximum allowable junction temperature; constrains derating above 25°C ambient per Fig.2 in datasheet |
| Package | DO-214AB (SMC) - industry-standard 2-pin surface-mount outline with 7.11 × 6.22 mm footprint and matte tin-plated leads |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with cathode band marking for unidirectional variants; 1.5SMC47C is bidirectional and marked with "FDJ" code - no polarity band required. Leads are matte tin-plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche terminals | Identical electrical behavior in both directions; connects across protected line and ground (or between differential lines) without orientation dependency |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional surge suppression | Enables single-device protection of AC-coupled or floating interfaces (e.g., RS-485, CAN, Ethernet PHY) without external polarity management |
| 1500W peak pulse power (10/1000µs) | Withstands automotive load dump (ISO 7637-2 Pulse 5a) and industrial lightning-induced surges without degradation |
| Clamping voltage ≤67.8V at 23A | Ensures downstream 5V/3.3V logic ICs remain below absolute maximum ratings during worst-case transients |
| Leakage <1µA @ 40.2V | Minimizes standby power loss in battery-backed or energy-sensitive systems such as remote sensors and IoT edge nodes |
| MSL Level 1 (J-STD-020) | Allows unlimited floor life and reflow compatibility without pre-baking - reduces manufacturing overhead in high-volume SMT lines |
Applications
| Industrial I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V DC input lines on PLC digital input cards exposed to relay coil flyback and field wiring ESD. IC Role / Device Role / Timing Role: Standoff TVS placed between input terminal and ground, conducting only during >40.2V transients. Use Value: Limits induced voltage to ≤67.8V, protecting optocoupler input stages and microcontroller GPIOs from damage per IEC 61000-4-2/4-4. |
Use Scenario: LIN bus transceiver power supply rail in door module subjected to battery disconnect/load dump events. IC Role / Device Role / Timing Role: Bidirectional clamp across VCC–GND, absorbing ISO 7637-2 Pulse 5a (75V/100ms) energy. Use Value: Maintains transceiver operation during 1500W surge pulses while holding rail voltage within safe operating area of 5V LDO regulator. |
| Telecom Line Interface | RS-485 Transceiver Port |
Use Scenario: T1/E1 line driver outputs connected to outside plant cabling vulnerable to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired 1.5SMC47C devices in back-to-back configuration across tip/ring and ground. Use Value: Clamps differential and common-mode transients symmetrically, preserving signal integrity while meeting GR-1089-CORE Level 3 surge immunity. |
Use Scenario: Half-duplex RS-485 node in factory automation network with long cable runs and shared ground potential shifts. IC Role / Device Role / Timing Role: Bidirectional TVS on A/B differential pair referenced to local ground plane. Use Value: Suppresses ESD (±15kV contact) and fast transients (IEC 61000-4-4, 4kV) without distorting 10Mbps signal edges due to low junction capacitance (~100pF @ 0V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47CA (Bourns) | Same DO-214AA (SMB) package; lower 600W PPK; VC = 77.0V @ 12.3A | Lower surge margin; suitable only for non-automotive, low-energy environments | Select when board space allows SMB footprint and peak surge energy is ≤600W |
| SMCJ47CA (Littelfuse) | Same DO-214AB (SMC) package; identical 1500W rating; VC = 67.8V @ 23A (same clamping) | Functionally interchangeable; minor VBR tolerance difference (43.0–52.0V vs. 42.3–51.7V) | Drop-in alternative with validated production history in industrial motor drives |
Compared with SMBJ47CA, 1.5SMC47C provides 2.5× higher surge energy handling and tighter clamping; versus SMCJ47CA, it offers equivalent protection performance with Taiwan Semiconductor's MSL Level 1 qualification and halogen-free compliance per IEC 61249-2-21.
Availability
1.5SMC47C is available at Aetrix Electronics and suitable for industrial I/O protection, automotive body electronics, telecom line interface, and RS-485 transceiver port applications requiring stable component supply, RoHS/halogen-free compliance, and ISO 7637-2 certification support.
Supply support for 1.5SMC47C 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, with ISO 9001 and IATF 16949 certified production.
The 1.5SMCxx series was engineered for high-reliability surface-mount surge protection in automotive, industrial, and telecom infrastructure - emphasizing MSL Level 1 process compatibility, low leakage, and repeatable clamping performance across temperature.
FAQ
What is the polarity configuration of 1.5SMC47C?
The 1.5SMC47C is a bidirectional TVS diode, meaning it conducts identically in both forward and reverse bias directions. Unlike unidirectional variants (e.g., 1.5SMC47), it has no cathode band marking and is designated by the "C" suffix. This enables symmetrical clamping across AC signals or floating differential buses without orientation constraints during placement.
Does 1.5SMC47C meet ISO 7637-2 compliance?
Yes, 1.5SMC47C meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for automotive transient immunity. Its 1500W peak pulse power rating and 67.8V clamping voltage at 23A ensure robust suppression of coupled transients from inductive load switching and electrostatic discharge, as verified in Taiwan Semiconductor's characterization reports.
What is the maximum steady-state power dissipation for 1.5SMC47C?
The 1.5SMC47C has a steady-state power dissipation (PD) of 6.5W at TA = 25°C. This value derates linearly above 25°C ambient per the thermal derating curve (Fig.2), reaching zero at 150°C. Designers must calculate board-level thermal resistance to ensure junction temperature remains ≤150°C under continuous DC leakage conditions.
How does the 1.5SMC47C differ from the 1.5SMC47CA variant?
The 1.5SMC47C and 1.5SMC47CA are functionally identical bidirectional TVS diodes. The "A" suffix denotes tighter VBR tolerance (44.7–49.4V vs. 42.3–51.7V for 1.5SMC47C) and same clamping performance (64.8V @ 24A). Both share DO-214AB package, 1500W rating, and MSL Level 1 qualification - selection depends on required VBR consistency in high-precision clamp designs.
What is the junction-to-case thermal resistance (RθJC) of 1.5SMC47C?
The junction-to-case thermal resistance (RθJC) of 1.5SMC47C is 15°C/W, measured from die junction to the external lead frame surface. This parameter is critical when using thermal vias or copper heatsinking under the SMC package - it enables accurate prediction of junction temperature rise above case temperature during pulsed or continuous power dissipation scenarios.
1.5SMC47C 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):
- 38.1V
- Voltage - Breakdown (Min):
- 42.3V
- Voltage - Clamping (Max) @ Ipp:
- 67.8V
- Current - Peak Pulse (10/1000µs):
- 23A
- 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)
1.5SMC47C FAQ
1.How can I place an order for 1.5SMC47C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47C 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 1.5SMC47C reliable?
The price and inventory of 1.5SMC47C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC47C is usually 5 days.
3.What payment methods are accepted for 1.5SMC47C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47C?
1.5SMC47C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47C 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 1.5SMC47C?
For technical support, including 1.5SMC47C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47C requirements.
6.How does Aetrix verify that 1.5SMC47C is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47C 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 1.5SMC47C meets industry standards.
7.What is the process for return or replacement of 1.5SMC47C?
All 1.5SMC47C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47C, 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 1.5SMC47C part is unused and in its original packaging.
Return procedure for 1.5SMC47C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47C Tags
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