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Vishay General Semiconductor - Diodes Division 1.5SMC7.5CA-M3/9AT
- Part No.:
- 1.5SMC7.5CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5CA-M3/9AT.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,912
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Product details
Overview
1.5SMC7.5CA-M3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 7.5 V standoff voltage (VWM), 1500 W peak pulse power rating (10/1000 µs), and clamps to ≤11.3 V at 133 A peak pulse current - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC7.5CA-M3/9AT datasheet, 1.5SMC7.5CA-M3/9AT pinout, 1.5SMC7.5CA-M3/9AT application, or 1.5SMC7.5CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, SMC (DO-214AB) package thermal performance, low leakage (<500 µA at 6.4 V), and AEC-Q101 qualification readiness via HM3 suffix variants.
Technical Context
This TVS diode operates symmetrically in both directions, with breakdown voltage (VBR) specified at 7.13–7.88 V (IT = 10 mA), enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable surge response and long-term reliability under repetitive transients.
Thermal design relies on low RθJL (15 °C/W) and moderate RθJA (75 °C/W), requiring PCB copper pad areas of 8.0 mm × 8.0 mm per terminal for full 1500 W rating. The device meets MSL Level 1 (260 °C peak reflow) and supports automated SMT placement with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 6.4 V - Maximum continuous reverse voltage before clamping begins; sets operating margin for 5 V or 6 V rail protection. |
| VBR (Breakdown) | 7.13–7.88 V @ 10 mA - Confirmed avalanche onset range; ensures predictable turn-on during fast transients. |
| VC (Clamping) | ≤11.3 V @ IPPM = 133 A - Peak voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 µs waveform; supports lightning and ESD immunity per IEC 61000-4-5. |
| ID (Leakage) | ≤500 µA @ 6.4 V - Low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance nodes. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with industry-standard pick-and-place feeders. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or industrial ambient environments. |
Pinout & Package
Package: SMC (DO-214AB), bidirectional - no polarity marking; symmetrical two-terminal construction with cathode/anode terminals interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous voltage polarity; no fixed polarity required. |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal completing symmetrical clamping path; enables protection of AC signals, differential buses, or floating references. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled lines (e.g., RS-485, CAN, audio) without external polarity management. |
| 1500 W peak pulse power | Withstands 10/1000 µs surges up to 133 A - exceeds IEC 61000-4-5 Level 4 (4 kV) requirements when properly mounted. |
| Glass-passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced degradation in harsh industrial or automotive environments. |
| MSL Level 1 compliance | Supports lead-free reflow up to 260 °C peak without moisture-related popcorning; eliminates pre-bake requirement for production. |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance mandates for EU, China RoHS, and automotive supply chains without compromising surge performance. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting 5 V supply and signal lines of wheel speed or pressure sensors exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±100 V transients before reaching ASIC or microcontroller input pins. Use Value: Maintains system uptime by preventing latch-up or gate oxide damage in sensor front-end circuits during vehicle battery disconnect events. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers against field wiring faults and induced lightning surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp across loop terminals, working in concert with series current-limiting resistors and shunt regulators. Use Value: Enables uninterrupted analog measurement by limiting transient voltage to <12 V, well below ADC input absolute maximum ratings. |
| Telecom Line Card Protection | Consumer USB Port ESD |
Use Scenario: Shielding Ethernet PHY or DSL line drivers from induced surges on outdoor-facing ports in access equipment. IC Role / Device Role / Timing Role: First-stage transient suppressor on line side of isolation transformer or common-mode choke. Use Value: Absorbs >90 % of 1.2/50 µs surge energy before it reaches sensitive magnetics or PHY ICs, reducing failure rate in field deployments. |
Use Scenario: Providing secondary-level ESD protection on USB 2.0 D+/D− lines after primary polymer-based TVS in portable devices. IC Role / Device Role / Timing Role: Fast-response silicon TVS placed adjacent to USB connector to clamp contact discharge events to <12 V. Use Value: Prevents data corruption and interface lockup during human-body-model (HBM) ESD events up to ±15 kV without affecting signal rise time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA | Lower PPPM (600 W), smaller SMB package (DO-214AA), higher VWM (6.0 V), same bidirectional configuration. | Better suited for space-constrained consumer electronics where 600 W surge margin suffices; not recommended for automotive load dump. | Select SMBJ7.0CA only if board area is critical and peak surge energy remains ≤600 W; verify thermal derating on small pads. |
| 1.5KE7.5CA | Through-hole TO-204AE (DO-15) package, identical electrical specs (VWM = 6.4 V, VC = 11.3 V), higher RθJA (~100 °C/W). | Used in legacy industrial designs with wave-solder assembly; lacks SMT compatibility and MSL Level 1 reflow support. | Choose 1.5KE7.5CA only for through-hole prototyping or repair of existing DO-15-based boards; not suitable for new SMT production. |
Compared with SMBJ7.0CA and 1.5KE7.5CA, the 1.5SMC7.5CA-M3/9AT delivers 2.5× higher surge power in an SMT-optimized package with superior thermal performance and halogen-free compliance - making it the preferred choice for new automotive and industrial designs requiring AEC-Q101 readiness and 1500 W robustness.
Availability
1.5SMC7.5CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, and telecom line card surge immunity requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC7.5CA-M3/9AT 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-energy transient suppression in demanding environments - targeting automotive, industrial, and telecom systems where consistent clamping performance and AEC-Q101 qualification readiness are mandatory.
FAQ
What is the standoff voltage (VWM) of the 1.5SMC7.5CA-M3/9AT?
The 1.5SMC7.5CA-M3/9AT has a maximum reverse standoff voltage (VWM) of 6.4 V at 25 °C. This value defines the highest continuous DC or RMS voltage the device can block without entering avalanche conduction - critical for ensuring reliable operation on 5 V systems while maintaining sufficient margin above nominal rail voltage.
Is the 1.5SMC7.5CA-M3/9AT unidirectional or bidirectional?
The 1.5SMC7.5CA-M3/9AT is a bidirectional TVS diode, indicated by the "CA" suffix. It provides symmetrical clamping in both polarities, making it ideal for protecting AC-coupled signals, differential buses like RS-485 or CAN, and floating reference nodes where polarity reversal may occur during transients.
What does the "M3" suffix mean in 1.5SMC7.5CA-M3/9AT?
The "M3" suffix denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. It confirms compliance with environmental regulations for commercial-grade applications and distinguishes it from E3 (standard RoHS) and HM3 (AEC-Q101 qualified) variants.
What is the clamping voltage (VC) of the 1.5SMC7.5CA-M3/9AT at its rated peak pulse current?
The 1.5SMC7.5CA-M3/9AT clamps to a maximum of 11.3 V at its rated peak pulse current (IPPM) of 133 A, measured with a 10/1000 µs waveform. This clamping level ensures protected downstream components - such as microcontrollers or transceivers - remain within safe absolute maximum voltage limits during surge events.
Can the 1.5SMC7.5CA-M3/9AT be used in automotive applications?
While the 1.5SMC7.5CA-M3/9AT itself is commercial-grade, it belongs to the AEC-Q101-qualified 1.5SMC family - with HM3-suffix variants (e.g., 1.5SMC7.5CAHM3_A/I) explicitly certified. For production automotive use, specify the HM3 version; the M3 variant is suitable for development, testing, and non-safety-critical subsystems where full qualification is not mandated.
1.5SMC7.5CA-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 133A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC7.5CA-M3/9AT FAQ
1.How can I place an order for 1.5SMC7.5CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5CA-M3/9AT 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 1.5SMC7.5CA-M3/9AT reliable?
The price and inventory of 1.5SMC7.5CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC7.5CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5CA-M3/9AT?
1.5SMC7.5CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5CA-M3/9AT 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 1.5SMC7.5CA-M3/9AT?
For technical support, including 1.5SMC7.5CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5CA-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC7.5CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5CA-M3/9AT 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 1.5SMC7.5CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5CA-M3/9AT?
All 1.5SMC7.5CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5CA-M3/9AT, 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 1.5SMC7.5CA-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC7.5CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5CA-M3/9AT Tags
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