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Vishay General Semiconductor - Diodes Division 1.5SMC7.5A-M3/9AT
- Part No.:
- 1.5SMC7.5A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5A-M3/9AT.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,345
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Product details
Overview
1.5SMC7.5A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 7.13 V minimum breakdown voltage (VBR), 6.40 V standoff voltage (VWM), 11.3 V maximum clamping voltage (VC) at 133 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the 1.5SMC7.5A-M3/9AT datasheet, 1.5SMC7.5A-M3/9AT pinout, 1.5SMC7.5A-M3/9AT application, or 1.5SMC7.5A-M3/9AT equivalent, key selection criteria include unidirectional polarity, halogen-free RoHS-compliant construction (M3 suffix), 150 °C max junction temperature, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads per terminal.
Technical Context
This TVS diode operates as a clamping device triggered by reverse-biased avalanche breakdown above its standoff voltage. Its glass-passivated junction ensures stable leakage (<500 μA at VWM) and fast response time (<1.0 ns), enabling protection against ESD, lightning-induced surges, and inductive switching transients.
The 1.5SMC7.5A-M3/9AT delivers 133 A peak pulse current (IPPM) under standardized 10/1000 μs waveform while maintaining low incremental surge resistance and clamping voltage of 11.3 V - critical for safeguarding 5 V–6 V logic-level circuits without overstressing downstream components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 6.40 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold |
| VBR (Min) | 7.13 V - Minimum breakdown voltage at 10 mA test current; defines reliable avalanche initiation point |
| VC @ IPPM | 11.3 V - Clamped voltage at 133 A peak pulse; determines maximum stress imposed on protected circuit |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 μs waveform; enables robust surge immunity per IEC 61000-4-5 |
| IPPM | 133 A - Peak pulse current capability; supports high-energy transient suppression in 12 V automotive systems |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood or industrial ambient environments |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with IPC-7351B standard |
Pinout & Package
SMC (DO-214AB) package with two terminals: cathode marked by band, anode unmarked. Designed for PCB mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to meet thermal derating requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche node | Connected to protected line; conducts during overvoltage to clamp to VC |
| Anode | Reference/ground return path | Typically tied to system ground or lower-potential rail; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables compliance with IEC 61000-4-5 Level 4 (4 kV surge) when properly mounted on recommended pad layout |
| Glass passivated chip junction | Ensures stable VBR tolerance (±5 % typical), low leakage (<500 μA), and long-term reliability under thermal cycling |
| Halogen-free, RoHS-compliant (M3) | Meets automotive and industrial environmental standards including JESD201 Class 2 whisker resistance and UL 94 V-0 flammability |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow soldering without preconditioning; eliminates moisture sensitivity concerns in SMT production |
| AEC-Q101 qualified option | Available as 1.5SMC7.5AHM3_A variant for automotive-grade applications requiring validated reliability testing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp spikes exceeding 13.5 V. Use Value: Limits transient voltage to ≤11.3 V at 133 A, preventing damage to 5 V LDOs and CAN transceivers downstream. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Standoff-rated clamping device on 4–20 mA loop or 0–10 V output line. Use Value: Maintains <500 μA leakage at 6.4 V, avoiding signal offset errors while suppressing ±2 kV ESD events. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side surge protection in AC/DC adapters supplying USB-C PD or PoE-powered devices. IC Role / Device Role / Timing Role: Fast-acting clamping element across +5 V or +9 V output rails. Use Value: Responds in <1 ns to suppress 10/1000 μs surges up to 1500 W without latch-up or degradation. |
Use Scenario: DC input protection for base station RF amplifiers powered via -48 V telecom supply. IC Role / Device Role / Timing Role: Reverse-polarity protected TVS on negative rail relative to chassis ground. Use Value: Withstands repetitive 100 A pulses at 0.01 % duty cycle, supporting long-life deployment in outdoor cabinets. |
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 PPPM (600 W), smaller SMB package (DO-214AA), 7.0 V nominal VWM | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge energy does not exceed 600 W |
| 1.5KE7.5A | Through-hole TO-204AE (DO-15) package, same VWM/VC, higher RθJA (100 °C/W) | Not compatible with automated SMT; requires wave soldering or hand assembly | Choose only for legacy through-hole designs or prototyping where reflow is unavailable |
Compared with SMBJ7.0A and 1.5KE7.5A, the 1.5SMC7.5A-M3/9AT uniquely balances 1500 W surge capacity, SMC surface-mount compatibility, and halogen-free compliance - making it optimal for high-reliability automotive and industrial SMT production where both performance and regulatory alignment are required.
Availability
1.5SMC7.5A-M3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feed protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC7.5A-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 developed to deliver high-power transient suppression in compact surface-mount packages for automotive, industrial, and telecom systems where space, thermal performance, and regulatory compliance are critical design constraints.
FAQ
What is the standoff voltage (VWM) of the 1.5SMC7.5A-M3/9AT?
The 1.5SMC7.5A-M3/9AT has a maximum reverse standoff voltage (VWM) of 6.40 V at 25 °C. This value defines the highest continuous reverse voltage the device can block without exceeding 500 μA leakage current. It ensures compatibility with 5 V logic rails and provides sufficient margin below the 7.13 V minimum breakdown voltage to prevent false triggering during normal operation.
Does the 1.5SMC7.5A-M3/9AT meet automotive qualification standards?
The base 1.5SMC7.5A-M3/9AT is commercial-grade and halogen-free RoHS-compliant, but not AEC-Q101 qualified. However, Vishay offers the automotive-qualified variant 1.5SMC7.5AHM3_A, which shares identical electrical characteristics and uses the same M3 halogen-free construction while undergoing full AEC-Q101 stress testing for temperature cycling, HTRB, and ESD.
What is the clamping voltage (VC) of the 1.5SMC7.5A-M3/9AT at its rated peak pulse current?
The 1.5SMC7.5A-M3/9AT clamps to a maximum of 11.3 V at its rated peak pulse current (IPPM) of 133 A, measured using the standardized 10/1000 μs double-exponential waveform. This clamping performance ensures protected circuits - such as 5 V microcontrollers or CAN transceivers - remain within safe voltage limits during surge events.
Can the 1.5SMC7.5A-M3/9AT be used in bidirectional configurations?
No - the 1.5SMC7.5A-M3/9AT is strictly unidirectional, indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies the 1.5SMC7.5CA variant, which has symmetrical breakdown in both directions and no polarity marking. Using the 1.5SMC7.5A-M3/9AT in reverse-biased signal paths will result in forward conduction and failure to suppress positive transients.
What is the thermal resistance (RθJA) of the 1.5SMC7.5A-M3/9AT under standard mounting conditions?
The 1.5SMC7.5A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes no additional heatsinking and defines the allowable power dissipation (≤6.5 W at 50 °C ambient) before exceeding the 150 °C maximum junction temperature.
1.5SMC7.5A-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:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC7.5A-M3/9AT FAQ
1.How can I place an order for 1.5SMC7.5A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5A-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 1.5SMC7.5A-M3/9AT reliable?
The price and inventory of 1.5SMC7.5A-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 1.5SMC7.5A-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5A-M3/9AT?
1.5SMC7.5A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5A-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 1.5SMC7.5A-M3/9AT?
For technical support, including 1.5SMC7.5A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5A-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC7.5A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5A-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 1.5SMC7.5A-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5A-M3/9AT?
All 1.5SMC7.5A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5A-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 1.5SMC7.5A-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC7.5A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5A-M3/9AT Tags
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