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Taiwan Semiconductor Corporation 1.5SMC30C
- Part No.:
- 1.5SMC30C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC30C.pdf
- Description:
- 1500W, 30V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:9,062
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Product details
Overview
1.5SMC30C from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in power rails and signal lines. It features a 30V breakdown voltage (VBR = 27.0–33.0V), 1500W peak pulse power rating, 43.5V maximum clamping voltage at 36A peak current, and DO-214AB (SMC) package - deployed in telecom interface protection and industrial I/O circuits.
For engineers reviewing the 1.5SMC30C datasheet, 1.5SMC30C pinout, 1.5SMC30C application, or 1.5SMC30C equivalent, key selection criteria include bidirectional clamping capability, sub-1ps response time, <1µA leakage at 24.3V working stand-off voltage, compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b, and moisture sensitivity level 1 handling.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1MΩ) with ≤1µA leakage at VWM = 24.3V; during transients exceeding VBR, it avalanches rapidly (<1.0ps) to clamp voltage to ≤43.5V at 36A (10/1000µs waveform). Its bidirectional symmetry ensures identical clamping in both polarities - critical for AC-coupled or floating signal paths.
Thermally, it sustains 150°C junction temperature with RθJA = 50°C/W and RθJC = 15°C/W, enabling reliable operation in compact PCB layouts. The glass-passivated junction and matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 27.0V / 33.0V - defines guaranteed avalanche initiation range at 1mA test current |
| VWM | 24.3V - maximum continuous reverse operating voltage before significant leakage |
| VC @ IPPM | 43.5V at 36A - clamping voltage limiting downstream circuit stress during 10/1000µs surge |
| PPK | 1500W - peak transient power dissipation capability per single non-repetitive pulse |
| IR @ VWM | ≤1µA - low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150°C - enables use in high-temperature industrial environments without derating |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 0.210g mass and UL 94V-0 molding |
Pinout & Package
Package: DO-214AB (SMC), bidirectional device with cathode band omitted - terminals are symmetrical and non-polarized. Case meets UL 94V-0 flammability rating; leads are matte tin plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge conduction path | No polarity marking required; either terminal serves as input/output for transient energy diversion |
| Case (exposed metal slug) | Thermal conduction path | Integral heat-sinking surface - requires adequate copper pour for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance in both directions - eliminates polarity concerns in AC or differential lines |
| Sub-1ps response time | Typically <1.0ps - faster than most ESD events, ensuring protection before sensitive ICs experience overstress |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) - suitable for automotive and industrial 12V/24V systems |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement before reflow - supports standard SMT assembly without special handling |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - meets environmental compliance for global electronics manufacturing |
Applications
| Industrial PLC Digital I/O Protection | Automotive Body Control Module (BCM) LIN Bus |
|---|---|
Use Scenario: Protecting 24V digital input channels in programmable logic controllers against inductive switching spikes and ESD from field wiring. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and ground, clamping transients before they reach input buffer ICs. Use Value: Limits voltage to ≤43.5V during 36A surges, preventing latch-up or damage to 3.3V/5V logic interfaces downstream. |
Use Scenario: Safeguarding LIN transceiver pins in body control modules exposed to battery transients and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional clamping element across LIN bus differential pair (LIN_H/L) referenced to chassis ground. Use Value: Maintains signal integrity by clamping ±43.5V peaks while adding <1pF junction capacitance - no data rate degradation on 20kbps LIN. |
| Telecom Ethernet PHY Port Protection | Smart Meter RS-485 Interface |
Use Scenario: Secondary-level surge protection on 10/100BASE-TX Ethernet PHY magnetics secondary side, downstream of primary gas discharge tube. IC Role / Device Role / Timing Role: Fast-response TVS across each twisted pair (TD+/TD−, RD+/RD−) to ground. Use Value: Clamps lightning-induced surges to safe levels within 1ps, preserving PHY IC reliability without affecting 100MHz signal bandwidth. |
Use Scenario: Protecting half-duplex RS-485 transceivers in utility smart meters installed in outdoor substations subject to induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS on A/B bus lines referenced to local ground, absorbing common-mode transients. Use Value: Withstands repeated 1kV/500A surges per IEC 61000-4-5 Level 3, extending field lifetime beyond 15 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA (Bourns) | Same DO-214AA (SMB) package; lower PPK = 600W; VC = 48.4V @ 12.4A | Lower surge capacity suits cost-sensitive consumer ports, not industrial 1500W requirements | Select only if system-level testing confirms 600W suffices and SMB footprint is preferred |
| SMCJ30CA (Littelfuse) | Identical DO-214AB (SMC) package and 1500W rating; VC = 48.4V @ 31.3A - 4.9V higher clamping than 1.5SMC30C | Higher clamping may exceed downstream IC absolute maximum ratings in tight-margin designs | Prefer 1.5SMC30C where clamping headroom below 44V is mandatory |
Compared with SMBJ30CA and SMCJ30CA, the 1.5SMC30C delivers superior clamping performance (43.5V vs. ≥48.4V) at full 1500W rating in the same SMC footprint - making it optimal for industrial and automotive applications demanding minimal voltage overshoot.
Availability
1.5SMC30C is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive LIN bus safeguarding, telecom Ethernet PHY hardening, and smart meter RS-485 interface protection requiring stable component supply and long-term lifecycle assurance.
Supply support for 1.5SMC30C 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, Taiwan, with ISO 9001 and IATF 16949 certified operations.
The 1.5SMCxx series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial automation, and telecommunications infrastructure where reliability under ISO 7637-2 and long-term stability are critical.
FAQ
What does the 'C' suffix indicate in 1.5SMC30C?
The 'C' suffix in 1.5SMC30C denotes bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities without polarity marking. Unlike unidirectional variants (e.g., 1.5SMC30), the 1.5SMC30C has identical electrical characteristics (VBR, VC, IPPM) for positive and negative surges, making it ideal for AC-coupled or floating signal lines such as RS-485 or LIN bus.
What is the maximum clamping voltage of 1.5SMC30C and under what test condition?
The maximum clamping voltage of 1.5SMC30C is 43.5V, measured at a peak pulse current (IPPM) of 36A using the standardized 10/1000µs double-exponential waveform defined in IEC 61000-4-5. This value is guaranteed across the full operating temperature range and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events.
Is 1.5SMC30C compliant with automotive transient standards?
Yes, 1.5SMC30C meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), making it suitable for 12V and 24V automotive subsystems including body control modules and infotainment interfaces. Its 1500W rating and bidirectional clamping align with stringent OEM surge immunity specifications.
What is the working stand-off voltage (VWM) of 1.5SMC30C and why does it matter?
The working stand-off voltage (VWM) of 1.5SMC30C is 24.3V - the maximum DC or continuous peak voltage the device can withstand without entering avalanche conduction. This parameter ensures reliable operation on 24V nominal systems (e.g., industrial controls or automotive accessories), providing margin above normal operating voltage while maintaining <1µA leakage to avoid signal distortion or power loss.
Does 1.5SMC30C require special PCB layout considerations?
Yes - due to its 1500W surge rating, 1.5SMC30C requires low-inductance PCB routing: short, wide traces to ground plane; minimum 2 oz copper; and thermal relief pads connected to ≥1 cm² internal/external copper pour. The DO-214AB case acts as a thermal path; insufficient copper area raises junction temperature, reducing surge endurance and accelerating degradation over repeated events.
1.5SMC30C 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):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 36A
- 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)
1.5SMC30C FAQ
1.How can I place an order for 1.5SMC30C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC30C 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 1.5SMC30C reliable?
The price and inventory of 1.5SMC30C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC30C is usually 5 days.
3.What payment methods are accepted for 1.5SMC30C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC30C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC30C?
1.5SMC30C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC30C 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 1.5SMC30C?
For technical support, including 1.5SMC30C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC30C requirements.
6.How does Aetrix verify that 1.5SMC30C is sourced from the original manufacturer or authorized distributors?
All 1.5SMC30C 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 1.5SMC30C meets industry standards.
7.What is the process for return or replacement of 1.5SMC30C?
All 1.5SMC30C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC30C, 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 1.5SMC30C part is unused and in its original packaging.
Return procedure for 1.5SMC30C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC30C Tags
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