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Taiwan Semiconductor Corporation 1.5SMC7.5
- Part No.:
- 1.5SMC7.5
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5.pdf
- Description:
- 1500W, 7.5V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,696
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Product details
Overview
1.5SMC7.5 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 6.75–8.25 V breakdown voltage (VBR), 6.05 V working stand-off voltage (VWM), 1500 W peak pulse power (PPK), and clamps transients to ≤11.7 V at 500 A, making it suitable for ESD and lightning surge protection in telecom front-ends.
For engineers reviewing the 1.5SMC7.5 datasheet, 1.5SMC7.5 pinout, 1.5SMC7.5 application, or 1.5SMC7.5 equivalent, key selection criteria include its DO-214AB (SMC) package compatibility, low leakage (<1 µA @ 6.05 V), fast sub-1 ps response, and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance - all critical for automotive infotainment and industrial I/O interface hardening.
Technical Context
The 1.5SMC7.5 operates as a unidirectional avalanche diode with glass-passivated junction, optimized for clamping fast-rising transients while maintaining low capacitance and minimal leakage. Its thermal design supports 150 °C maximum junction temperature and leverages a 15 °C/W junction-to-case thermal resistance for effective power dissipation during 1 ms pulses.
It delivers 1500 W peak pulse power per 10/1000 µs waveform (per Fig.5), with clamping voltage tightly specified at 11.7 V under 500 A impulse current. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, enabling robust automated SMT assembly without pre-baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.75 V / 8.25 V - Ensures reliable avalanche initiation above 6.05 V operating rail without false triggering |
| VWM | 6.05 V - Maximum continuous DC voltage the device blocks without significant leakage |
| IPPM | 500 A - Peak surge current capability under standardized 10/1000 µs transient, defining protection margin |
| VC@IPPM | ≤11.7 V - Clamped voltage seen by protected circuit during full-rated surge, limiting stress on downstream ICs |
| PPK | 1500 W - Peak pulse power handling per single 1 ms event, derated linearly above 25 °C ambient |
| TJ max | 150 °C - Maximum junction temperature enabling operation in under-hood or enclosed industrial enclosures |
| RθJC | 15 °C/W - Enables thermal coupling to PCB copper pour for sustained surge recovery without thermal runaway |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Case meets UL 94V-0 flammability rating; matte tin-plated leads comply with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected line (e.g., +12 V rail); conducts during reverse-biased surge |
| Cathode | Ground/reference side | Connected to system ground or low-impedance return; defines polarity and clamping reference |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| Sub-1 ps response time | Clamps ESD events before sensitive logic inputs can be damaged, meeting IEC 61000-4-2 Level 4 |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1/2a/2b/3a/3b) |
| Moisture Sensitivity Level 1 | Allows direct placement without baking, reducing manufacturing cost and process complexity |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics manufacturing |
Applications
| Automotive Infotainment Power Input | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting 5–12 V power input of head unit modules against battery load dump and alternator transients. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of DC-DC converters and LDOs. Use Value: Limits voltage to ≤11.7 V during 500 A surges, preventing damage to PMICs and microcontrollers rated for ≤16 V absolute max. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS shunting surge energy to chassis ground before reaching optocoupler input stages. Use Value: Withstands 1500 W pulses while maintaining <1 µA leakage at 6.05 V, preserving input threshold accuracy and noise immunity. |
| Telecom Line Card Surge Protection | Consumer USB Power Delivery Interface |
Use Scenario: Front-end protection of Ethernet PHY power supplies and auxiliary bias rails in base station line cards. IC Role / Device Role / Timing Role: Secondary overvoltage clamp after gas discharge tube (GDT) primary stage. Use Value: Fast 11.7 V clamping ensures downstream PoE controller ICs (e.g., TPS2375) remain within safe operating area during ISO 7637-2 Pulse 2b events. |
Use Scenario: Overvoltage guard on VBUS line of USB-C receptacles subjected to hot-plug ESD and adapter fault conditions. IC Role / Device Role / Timing Role: Low-capacitance unidirectional suppressor placed between connector and USB PD controller. Use Value: 6.05 V VWM allows clean 5 V operation; 11.7 V VC prevents latch-up in USB PD sink ICs such as FUSB302B. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Lower PPK (600 W), higher VC (12.0 V @ 30 A), SMB package (smaller footprint, lower thermal mass) | Not suitable for 500 A surge events; limited to lower-energy ESD-only scenarios | Select only when board space is constrained and surge threat level is ≤IEC 61000-4-5 1 kV |
| 1.5KE7.5 | Through-hole TO-204AA (DO-41), same VBR/VC, but slower response (>1 ns) and no MSL-1 rating | Requires wave soldering; incompatible with high-speed SMT lines and moisture-sensitive environments | Choose only for legacy through-hole designs where rework flexibility outweighs automated assembly needs |
Compared with 1.5SMC7.5, SMBJ7.0A offers smaller size but insufficient 1500 W surge capacity, while 1.5KE7.5 provides identical electrical specs but lacks SMT readiness and MSL-1 compliance - making 1.5SMC7.5 the optimal choice for new automotive and industrial SMT designs requiring robust, automated, and standards-compliant TVS protection.
Availability
1.5SMC7.5 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and telecom line card power protection requiring stable component supply across extended production lifecycles.
Supply support for 1.5SMC7.5 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 1.5SMC7.5 belongs to TSC's SMC-family of high-power surface-mount TVS diodes, engineered specifically for automotive, industrial, and telecom applications demanding ISO 7637-2 compliance, high surge robustness, and automated assembly compatibility.
FAQ
What is the polarity configuration of the 1.5SMC7.5?
The 1.5SMC7.5 is a unidirectional TVS diode, configured with anode and cathode terminals marked by a cathode band on the DO-214AB package body. It conducts only during reverse-bias transients - i.e., when cathode voltage exceeds anode voltage - and blocks up to 6.05 V in forward direction. This polarity must be observed during PCB layout to ensure correct clamping behavior in DC power line protection.
Does the 1.5SMC7.5 meet automotive surge immunity standards?
Yes, the 1.5SMC7.5 meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (supply interruption), Pulse 3a (capacitive coupled noise), and Pulse 3b (battery connection bounce). Its 1500 W peak power rating and 11.7 V clamping voltage at 500 A enable compliance with Level III/IV test profiles used in automotive infotainment and body control module designs.
What is the maximum allowable mounting temperature for the 1.5SMC7.5 during reflow?
The 1.5SMC7.5 is rated for Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/60% RH and subjected to standard lead-free reflow profiles without baking. Peak reflow temperature must not exceed 260 °C for ≤30 seconds, consistent with IPC/JEDEC J-STD-020D. The device's UL 94V-0 molding compound ensures stability under these thermal conditions.
How does the 1.5SMC7.5 compare to the 1.5SMC7.5A variant?
The 1.5SMC7.5A has tighter VBR tolerance (7.13–7.88 V vs. 6.75–8.25 V) and slightly higher VWM (6.40 V vs. 6.05 V), resulting in improved margin against false triggering near nominal 5 V or 6 V rails. Both share identical PPK (1500 W), VC (11.3 V for 1.5SMC7.5A), package, and thermal specs. Choose 1.5SMC7.5A when tighter voltage control is required in precision power monitoring circuits.
Can the 1.5SMC7.5 be used in bidirectional applications?
No - the 1.5SMC7.5 is unidirectional only. For bidirectional transient suppression (e.g., AC signal lines or differential buses), use the 1.5SMC7.5C or 1.5SMC7.5CA variants, which feature symmetrical breakdown in both polarities and are explicitly designated for bipolar operation in TSC's ordering matrix. Using 1.5SMC7.5 in reverse-biased AC contexts risks permanent failure due to forward conduction during negative half-cycles.
1.5SMC7.5 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):
- 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)
1.5SMC7.5 FAQ
1.How can I place an order for 1.5SMC7.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5 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 1.5SMC7.5 reliable?
The price and inventory of 1.5SMC7.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC7.5 is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5?
1.5SMC7.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5 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 1.5SMC7.5?
For technical support, including 1.5SMC7.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5 requirements.
6.How does Aetrix verify that 1.5SMC7.5 is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5 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 1.5SMC7.5 meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5?
All 1.5SMC7.5 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5, 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 1.5SMC7.5 part is unused and in its original packaging.
Return procedure for 1.5SMC7.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5 Tags
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