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Taiwan Semiconductor Corporation 1.5SMC75
- Part No.:
- 1.5SMC75
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75.pdf
- Description:
- 1500W, 75V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,983
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Product details
Overview
1.5SMC75 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 67.5–82.5 V breakdown voltage (VBR), 60.7 V working stand-off voltage (VWM), 1500 W peak pulse power (PPK), and clamps to ≤108 V at 14 A peak impulse current - deployed in telecom power inputs, industrial I/O modules, and automotive body control units.
For engineers reviewing the 1.5SMC75 datasheet, 1.5SMC75 pinout, 1.5SMC75 application, or 1.5SMC75 equivalent, this page delivers verified electrical specs, DO-214AB package details, clamping behavior under ISO 7637-2 transients, thermal resistance data, and real-world ESD/switching-surge protection use cases - all confirmed against Taiwan Semiconductor's S2207 specification release.
Technical Context
This unidirectional TVS operates with a glass-passivated junction and exhibits <1.0 ps response time, enabling effective suppression of fast-rising ESD events (IEC 61000-4-2) and load-dump transients. Its 150 °C maximum junction temperature and JESD201 Class 2 whisker resistance support reliability in thermally demanding environments.
The device complies with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms and delivers 50 °C/W junction-to-ambient thermal resistance (RθJA) in standard PCB mounting. It is rated for 1 μA maximum leakage at 60.7 V and supports surge currents up to 14 A (10/1000 μs waveform) without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 67.5 V / 82.5 V - defines guaranteed conduction onset range under 1 mA test current; ensures robust margin above 60.7 V operating rail |
| VWM | 60.7 V - maximum continuous reverse voltage before significant leakage; sets safe DC operating ceiling |
| VC@IPPM | ≤108 V at 14 A - clamping voltage during 10/1000 μs surge; determines protected circuit's peak stress level |
| PPK | 1500 W - peak pulse power handling per single transient; validates immunity to ISO 7637-2 Pulse 1 & 2b |
| IR@VWM | ≤1 μA - ultra-low blocking leakage at rated stand-off; avoids parasitic loading on high-impedance nodes |
| TJMAX | 150 °C - maximum junction temperature; enables operation in under-hood or enclosed industrial enclosures |
| RθJA | 50 °C/W - thermal resistance to ambient; informs minimum copper area needed for 1500 W pulse dissipation |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Case meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; completes clamping loop during transient |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 48 V rail); conducts surge current to ground when VBR exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under humidity and thermal cycling |
| <1.0 ps response time | Guarantees sub-nanosecond turn-on for ESD events per IEC 61000-4-2 Level 4 (15 kV air) |
| ISO 7637-2 compliance | Validated for automotive load-dump (Pulse 2b), supply interruption (Pulse 3b), and coupled transients |
| Moisture sensitivity level 1 | Eliminates bake requirements prior to reflow; supports standard SMT assembly without floor-life constraints |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU; suitable for green manufacturing programs |
Applications
| Telecom Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 48 V DC power feed to base station RF modules exposed to lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and LDOs. Use Value: Limits transient voltage to ≤108 V, preventing damage to 60 V-rated MOSFETs and PMICs while maintaining >60.7 V nominal operation. |
Use Scenario: 24 V digital input channel on programmable logic controller subjected to inductive kickback from solenoid switching. IC Role / Device Role / Timing Role: Fast-acting shunt protector across optocoupler input terminals. Use Value: Clamps 14 A surge within 1 ps, preserving signal integrity and avoiding false triggering of downstream logic. |
| Automotive Body Control Module (BCM) | Consumer Appliance Motor Drive Supply |
Use Scenario: 12 V battery-supplied microcontroller power rail in BCM exposed to ISO 7637-2 Pulse 2b (load dump). IC Role / Device Role / Timing Role: Standoff-rated TVS parallel to input capacitor bank. Use Value: Absorbs 1500 W pulse energy without failure, ensuring MCU reset immunity and EEPROM data retention during engine cranking. |
Use Scenario: 36 V DC bus in smart washing machine motor inverter subjected to relay contact bounce and brush arcing. IC Role / Device Role / Timing Role: Secondary protection stage after bulk MOV, fine-tuned for fast edge suppression. Use Value: Provides precise 60.7 V clamping threshold with <1 μA leakage, eliminating standby power loss in always-on control circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A (Bourns) | Same DO-214AA package; 75 V VBR min/max = 71.3–78.8 V; 1000 W PPK; higher VC = 121 V @ 10.3 A | Limited to lower-energy transients; insufficient for ISO 7637-2 Pulse 1 (1500 W requirement) | Select only if system surge energy is capped below 1000 W and layout space restricts to SMB footprint. |
| 1.5KE75 (ON Semiconductor) | Through-hole DO-15 package; identical VBR and VC specs; same 1500 W rating but 3× higher RθJA (150 °C/W) | Requires manual insertion or wave solder; unsuitable for high-density SMT production | Choose only for legacy through-hole designs or prototyping where thermal derating is acceptable. |
Compared with SMBJ75A and 1.5KE75, the 1.5SMC75 uniquely combines SMT-compatible DO-214AB packaging, full 1500 W ISO 7637-2 compliance, and 50 °C/W thermal performance - making it the optimal choice for automated, high-reliability 48 V/24 V industrial and automotive power rail protection.
Availability
1.5SMC75 is available at Aetrix Electronics and suitable for telecom power inputs, industrial PLC I/O modules, and automotive body control units requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC75 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 was engineered specifically for high-power, surface-mount transient suppression in automotive and industrial environments - emphasizing ISO 7637-2 compliance, moisture resilience, and automated assembly readiness.
FAQ
What is the breakdown voltage range for the 1.5SMC75?
The 1.5SMC75 has a guaranteed breakdown voltage (VBR) range of 67.5 V to 82.5 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range ensures reliable turn-on above its 60.7 V working stand-off voltage while accommodating process variation - critical for protecting 48 V systems where margin against false triggering must be preserved.
Is the 1.5SMC75 unidirectional or bidirectional?
The 1.5SMC75 is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix. It conducts only when cathode voltage exceeds anode by ≥67.5 V and blocks up to 60.7 V in reverse bias. For bidirectional protection, TSC specifies the 1.5SMC75C variant - which uses the same DO-214AB package but provides symmetrical clamping in both polarities.
What is the maximum clamping voltage of the 1.5SMC75 under surge conditions?
The 1.5SMC75 clamps to a maximum of 108 V when subjected to its rated 14 A peak impulse current (IPPM) using the standardized 10/1000 μs waveform. This value is measured per Fig.5 in the datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case transients - directly informing downstream component voltage ratings.
Does the 1.5SMC75 meet automotive transient standards?
Yes, the 1.5SMC75 meets ISO 7637-2 Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (load dump into alternator), Pulse 3a (capacitive coupling), and Pulse 3b (battery connection bounce). Its 1500 W rating and 108 V clamping ensure compliance across all five test waveforms without external circuit modification.
What is the thermal resistance of the 1.5SMC75 in standard mounting?
The 1.5SMC75 has a junction-to-ambient thermal resistance (RθJA) of 50 °C/W under standard JEDEC PCB mounting conditions (1 in² copper pad, 2 oz Cu). This value enables accurate thermal modeling for 1500 W pulse dissipation and confirms suitability for compact layouts where forced airflow is unavailable - provided minimum copper area guidelines are followed.
1.5SMC75 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):
- 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)
1.5SMC75 FAQ
1.How can I place an order for 1.5SMC75 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75 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 1.5SMC75 reliable?
The price and inventory of 1.5SMC75 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75 is usually 5 days.
3.What payment methods are accepted for 1.5SMC75?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75?
1.5SMC75 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75 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 1.5SMC75?
For technical support, including 1.5SMC75 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75 requirements.
6.How does Aetrix verify that 1.5SMC75 is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75 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 1.5SMC75 meets industry standards.
7.What is the process for return or replacement of 1.5SMC75?
All 1.5SMC75 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75, 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 1.5SMC75 part is unused and in its original packaging.
Return procedure for 1.5SMC75:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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