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Taiwan Semiconductor Corporation 1.5SMC7.5C
- Part No.:
- 1.5SMC7.5C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5C.pdf
- Description:
- 1500W, 7.5V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,702
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Product details
Overview
1.5SMC7.5C from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for ESD and surge protection of data lines and power rails. It features a 7.5V nominal breakdown voltage (6.75–8.25V), 1500W peak pulse power rating, 11.7V maximum clamping voltage at 500A, and <1μA leakage at 6.05V working stand-off voltage.
For engineers reviewing the 1.5SMC7.5C datasheet, 1.5SMC7.5C pinout, 1.5SMC7.5C application, or 1.5SMC7.5C equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, and suitability for telecom interface protection, USB port hardening, and industrial I/O line safeguarding.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector with symmetrical avalanche breakdown in both polarities, enabling robust bidirectional transient suppression without polarity dependency. Its glass-passivated junction ensures stable VBR tolerance (±10%) and low temperature coefficient (0.061%/°C), critical for consistent clamping across automotive and industrial temperature ranges.
The device delivers 1500W peak pulse power handling per 10/1000μs waveform, with thermal resistance RθJA = 50°C/W and RθJC = 15°C/W, supporting reliable operation up to TJ = +150°C. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.75V / 8.25V - Ensures reliable turn-on before system damage threshold; ±10% tolerance supports design margining |
| VWM | 6.05V - Maximum continuous reverse operating voltage; allows safe operation below breakdown |
| VC @ IPPM | 11.7V @ 500A - Clamping voltage during 10/1000μs surge; limits downstream voltage stress to safe levels |
| PPK | 1500W - Peak pulse power rating per standard waveform; defines single-event surge energy handling |
| IR @ VWM | <1μA - Ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max | +150°C - Junction temperature limit enables use in under-hood or enclosed industrial environments |
| Response time | <1.0ps - Enables effective suppression of ESD events (IEC 61000-4-2) and fast transients |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads, UL 94V-0 molding compound, 0.210g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No polarity marking required; identical clamping behavior in either direction |
| Case (body) | Thermal path / mechanical anchor | DO-214AB outline provides 15°C/W junction-to-case thermal resistance for PCB heat dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance in both directions-eliminates orientation concerns during automated placement |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling)-supports automotive and heavy-industrial 12V/24V systems |
| Glass passivated junction | Stable parametric drift over lifetime and temperature; prevents moisture-induced degradation in humid environments |
| Sub-1ps response | Clamps ESD events before propagation into IC inputs-meets IEC 61000-4-2 Level 4 (15kV air / 8kV contact) requirements |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU-enables use in green electronics manufacturing |
Applications
| Automotive Infotainment Interface | Industrial RS-485 Data Line |
|---|---|
Use Scenario: Protecting HDMI, USB, or CAN-FD ports in head units from ESD and load-dump induced transients. IC Role / Device Role: Bidirectional shunt clamp placed between signal pair and chassis ground. Use Value: Limits transient voltage to ≤11.7V during 500A surges, preventing latch-up or gate oxide damage in SerDes ICs and PHYs. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs exposed to motor switching noise. IC Role / Device Role: Differential-line TVS across A/B bus lines referenced to local ground. Use Value: Clamps common-mode surges up to 1500W without degrading signal integrity due to low capacitance and symmetric response. |
| Consumer USB-C Port Protection | Telecom DSL Line Interface |
Use Scenario: Hardening USB-C receptacles against user-handling ESD and hot-plug transients. IC Role / Device Role: Bidirectional TVS on VCONN, CC, and SBU lines with minimal footprint. Use Value: Sub-1ps response and <1μA leakage preserve USB PD negotiation timing and battery drain specs. |
Use Scenario: Protecting ADSL/VDSL line drivers and receivers from lightning-induced surges on twisted-pair copper lines. IC Role / Device Role: Primary surge arrestor placed before transformer or integrated line driver. Use Value: 1500W rating handles 10/1000μs lightning surges while maintaining low VC/VBR ratio for upstream component safety. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA (Bourns) | Lower PPK = 600W; VC = 12.0V @ 30A; DO-214AA (SMB) package | Not suitable for 1500W ISO 7637-2 Pulse 1; limited to lower-energy transients | Select only when surge energy is constrained and board space requires smaller SMB footprint |
| 1.5KE7.5C (ON Semiconductor) | Through-hole TO-277 package; same VBR/VC but higher RθJA (65°C/W); no J-STD-020 MSL-1 rating | Requires wave soldering; unsuitable for high-density SMT-only production | Choose only for legacy through-hole designs or where thermal mass of leaded package is preferred |
Compared with 1.5SMC7.5C, SMBJ7.0CA offers smaller size but insufficient power handling for automotive load-dump, while 1.5KE7.5C provides identical electrical specs but lacks SMT compatibility and moisture sensitivity certification-making 1.5SMC7.5C optimal for modern automated, high-reliability surface-mount deployments.
Availability
1.5SMC7.5C is available at Aetrix Electronics and suitable for automotive infotainment interfaces, industrial RS-485 networks, and consumer USB-C port protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC7.5C 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, and rectifiers with global distribution and AEC-Q200 qualified product lines.
The 1.5SMC series was engineered specifically for high-power, surface-mount transient suppression in automotive, industrial, and telecom infrastructure-emphasizing robustness, automated assembly readiness, and international surge standard compliance.
FAQ
What does the 'C' suffix indicate in 1.5SMC7.5C?
The 'C' suffix in 1.5SMC7.5C denotes bidirectional configuration-meaning the device provides symmetrical transient voltage suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity applied. This eliminates orientation constraints during PCB layout and automated placement, unlike unidirectional variants (e.g., 1.5SMC7.5) that require cathode alignment.
Is 1.5SMC7.5C compliant with ISO 7637-2 for automotive applications?
Yes, 1.5SMC7.5C is explicitly rated to meet ISO 7637-2 test pulses 1, 2a, 2b, 3a, and 3b per the manufacturer's datasheet. Its 1500W peak pulse power rating and 11.7V clamping voltage at 500A enable reliable protection against load-dump transients and inductive switching noise in 12V automotive systems-making it suitable for infotainment, body control, and sensor interface modules.
What is the maximum clamping voltage of 1.5SMC7.5C under surge conditions?
The maximum clamping voltage (VC) of 1.5SMC7.5C is 11.7V at 500A peak impulse current (IPPM) with a 10/1000μs waveform. This value is guaranteed across temperature and production lot, ensuring downstream ICs experience no more than 11.7V during worst-case transients-critical for safeguarding 3.3V or 5V logic interfaces without additional voltage limiting.
Does 1.5SMC7.5C require special PCB layout considerations for thermal performance?
Yes-while 1.5SMC7.5C has RθJA = 50°C/W, optimal thermal performance requires ≥25 mm² of 1-oz copper connected to both terminals as a thermal pad. The DO-214AB (SMC) package relies on copper area for heat spreading; insufficient copper increases junction temperature beyond 150°C under repeated surges, accelerating parametric drift and reducing reliability.
How does the 1.5SMC7.5C compare to the 1.5SMC7.5A variant?
The 1.5SMC7.5C and 1.5SMC7.5A differ in breakdown voltage tolerance: 1.5SMC7.5C has VBR = 6.75–8.25V (±10%), while 1.5SMC7.5A tightens this to 7.13–7.88V (±5%). Both share identical 1500W rating, 11.7V/11.3V clamping, and DO-214AB packaging-but 1.5SMC7.5C offers broader tolerance for cost-sensitive designs where tighter VBR isn't required.
1.5SMC7.5C 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):
- 6.05V
- Voltage - Breakdown (Min):
- 6.75V
- Voltage - Clamping (Max) @ Ipp:
- 11.7V
- Current - Peak Pulse (10/1000µs):
- 134A
- 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)
1.5SMC7.5C FAQ
1.How can I place an order for 1.5SMC7.5C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5C 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 1.5SMC7.5C reliable?
The price and inventory of 1.5SMC7.5C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC7.5C is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5C?
1.5SMC7.5C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5C 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 1.5SMC7.5C?
For technical support, including 1.5SMC7.5C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5C requirements.
6.How does Aetrix verify that 1.5SMC7.5C is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5C 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 1.5SMC7.5C meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5C?
All 1.5SMC7.5C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5C, 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 1.5SMC7.5C part is unused and in its original packaging.
Return procedure for 1.5SMC7.5C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5C Tags
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