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Taiwan Semiconductor Corporation 1.5SMC75C
- Part No.:
- 1.5SMC75C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75C.pdf
- Description:
- 1500W, 75V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,146
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Product details
Overview
1.5SMC75C 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 75V breakdown voltage (67.5–82.5V), 1500W peak pulse power rating, 60.7V working stand-off voltage, <1μA leakage at VWM, and clamps to ≤108V at 14A peak impulse current. It is used in telecom interface protection and industrial I/O modules requiring ISO 7637-2 compliance.
For engineers reviewing the 1.5SMC75C datasheet, 1.5SMC75C pinout, 1.5SMC75C application, or 1.5SMC75C equivalent, key selection criteria include bidirectional clamping capability, DO-214AB package thermal performance (RθJA = 50°C/W), junction temperature range (–55°C to +150°C), and compliance with automotive transient standards including Pulse 1/2a/2b/3a/3b.
Technical Context
The 1.5SMC75C operates as a voltage-clamped avalanche diode with symmetrical bidirectional conduction-enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage across temperature.
It delivers fast transient response (<1.0 ps), supports repetitive surge events when derated per Fig.2, and maintains clamping performance under 10/1000μs waveform conditions defined by R.E.A. standards. Thermal design must account for its 15°C/W junction-to-case resistance and 50°C/W junction-to-ambient rating in PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 67.5 V / 82.5 V - defines guaranteed avalanche initiation window under 1.0 mA test current |
| VWM | 60.7 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| IPPM | 14 A - peak surge current it safely clamps at 10/1000μs waveform, determining minimum series impedance needed |
| VC@IPPM | ≤108 V - maximum clamped voltage seen by protected circuit during rated surge event |
| PPK | 1500 W - peak non-repetitive pulse power handling capacity at TA = 25°C |
| TJ Range | –55°C to +150°C - operational junction temperature range affecting leakage and clamping stability |
| RθJA | 50°C/W - thermal resistance from junction to ambient, critical for power derating above 25°C |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional, cathode band not applicable (symmetrical terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Surge current path terminal | Either terminal accepts transient current in either polarity; no polarity marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating nodes without external polarity management |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transients (Pulse 1/2a/2b/3a/3b) |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly processes |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives for environmentally constrained applications |
| Glass passivated junction | Ensures long-term parameter stability and low IR drift over temperature and life cycle |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24V digital input channels in programmable logic controllers against inductive kickback and ESD. IC Role / Device Role / Timing Role: Standoff voltage limiter and surge energy sink placed directly at connector entry point. Use Value: Maintains 60.7V working stand-off while clamping 14A transients to ≤108V, preserving downstream logic-level interface integrity. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs in body electronics exposed to battery line transients. IC Role / Device Role / Timing Role: Bidirectional TVS on supply rail and data lines to absorb ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2b (load dump). Use Value: Symmetrical clamping ensures protection regardless of signal polarity; 1500W rating handles high-energy pulses without degradation. |
| Telecom Ethernet PHY Interface | Smart Meter Power Supply Input |
Use Scenario: Shielding 10/100BASE-TX magnetics and PHY pins from lightning-induced surges and hot-plug ESD. IC Role / Device Role / Timing Role: Secondary-level TVS after common-mode chokes, placed across differential pairs and to chassis ground. Use Value: Sub-1ps response time prevents voltage overshoot beyond PHY absolute maximum ratings; low capacitance avoids signal integrity impact. |
Use Scenario: Protecting AC-DC converter front-end and microcontroller supply rails in utility-grade smart meters. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V or 24V auxiliary supply, coordinated with fuse and MOV staging. Use Value: 1500W peak power rating sustains multiple surge events per IEC 61000-4-5 Level 4; –55°C to +150°C operation suits outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA (Bourns) | Same DO-214AA package; 1000W rating; lower IPPM (11.3A); VC = 121V @ IPPM | Limited to lower-energy transients; less margin for ISO 7637-2 Pulse 2b | Select when board space constraints favor SMB package and surge requirements are ≤1000W |
| 1.5KE75CA (ON Semiconductor) | Through-hole DO-15; same 1500W rating but higher RθJA (~65°C/W); slower mounting process | Not suitable for high-density SMT production; requires wave solder or hand assembly | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with 1.5SMC75C, SMBJ75CA offers smaller footprint but reduced surge capacity and higher clamping voltage, while 1.5KE75CA matches power rating but sacrifices SMT manufacturability and thermal performance-making 1.5SMC75C optimal for automated, high-reliability industrial and automotive SMT deployments.
Availability
1.5SMC75C is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive BCM circuits, and telecom Ethernet PHY interfaces requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC75C 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 global distribution and AEC-Q200 qualified product lines.
The 1.5SMC75C belongs to TSC's SMC-family of high-power surface-mount TVS diodes engineered for automotive, industrial, and telecom surge immunity-designed to replace older axial or larger SMD packages without sacrificing clamping performance or manufacturability.
FAQ
What does the 'C' suffix indicate in 1.5SMC75C?
The 'C' suffix in 1.5SMC75C denotes bidirectional configuration-meaning the device provides symmetrical clamping in both polarities, with identical electrical characteristics (VBR, VC, IPPM) regardless of voltage polarity applied. This distinguishes it from unidirectional variants like 1.5SMC75A and enables use in AC-coupled or floating signal paths without polarity concerns. The 1.5SMC75C is fully specified in the Taiwan Semiconductor datasheet S2207 for bidirectional operation.
Is 1.5SMC75C RoHS and halogen-free compliant?
Yes, 1.5SMC75C is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the official Taiwan Semiconductor datasheet (Version S2207). The molding compound meets UL 94V-0 flammability rating, and matte tin-plated leads comply with J-STD-002 solderability requirements. These certifications are verified for the DO-214AB (SMC) package variant shipped under standard ordering code 1.5SMC75C.
What is the maximum clamping voltage of 1.5SMC75C at its rated peak current?
The maximum clamping voltage (VC) of 1.5SMC75C is 108 V at its rated peak impulse current (IPPM) of 14 A, tested under the standardized 10/1000 μs double-exponential waveform per R.E.A. definition. This value is guaranteed across the full operating temperature range and represents the highest voltage the protected circuit will experience during a full-rated surge event. The 1.5SMC75C datasheet specifies this parameter in the Electrical Specifications table on page 3.
Does 1.5SMC75C meet ISO 7637-2 automotive transient immunity standards?
Yes, 1.5SMC75C is explicitly rated to meet ISO 7637-2 for Pulses 1, 2a, 2b, 3a, and 3b, as stated in the Features section of the Taiwan Semiconductor datasheet (S2207). Its 1500W peak power rating, low clamping voltage (≤108 V), and fast response (<1.0 ps) enable effective suppression of load-dump, inductive switching, and coupling transients encountered in 12V/24V automotive systems. This makes 1.5SMC75C suitable for BCM, ADAS sensor, and infotainment power rail protection.
What is the thermal resistance and maximum junction temperature for 1.5SMC75C?
The 1.5SMC75C has a junction-to-ambient thermal resistance (RθJA) of 50°C/W and a junction-to-case resistance (RθJC) of 15°C/W, with a maximum rated junction temperature (TJ) of +150°C. Its storage temperature range is –55°C to +150°C. These values are measured under standard JEDEC conditions and require appropriate PCB copper area (per suggested pad layout in datasheet) to achieve rated power dissipation. Derating curves in Figure 2 of the 1.5SMC75C datasheet define safe operating limits above 25°C ambient.
1.5SMC75C 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):
- 60.7V
- Voltage - Breakdown (Min):
- 67.5V
- Voltage - Clamping (Max) @ Ipp:
- 108V
- Current - Peak Pulse (10/1000µs):
- 14A
- 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)
1.5SMC75C FAQ
1.How can I place an order for 1.5SMC75C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75C 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 1.5SMC75C reliable?
The price and inventory of 1.5SMC75C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75C is usually 5 days.
3.What payment methods are accepted for 1.5SMC75C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75C?
1.5SMC75C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75C 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 1.5SMC75C?
For technical support, including 1.5SMC75C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75C requirements.
6.How does Aetrix verify that 1.5SMC75C is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75C 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 1.5SMC75C meets industry standards.
7.What is the process for return or replacement of 1.5SMC75C?
All 1.5SMC75C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75C, 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 1.5SMC75C part is unused and in its original packaging.
Return procedure for 1.5SMC75C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75C Tags
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