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Vishay General Semiconductor - Diodes Division 1.5SMC75CA-M3/9AT
- Part No.:
- 1.5SMC75CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75CA-M3/9AT.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,109
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Product details
Overview
1.5SMC75CA-M3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 75 V standoff voltage (VWM), 82.9 V minimum breakdown voltage (VBR), 104 V maximum clamping voltage (VC) at 14.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC75CA-M3/9AT datasheet, 1.5SMC75CA-M3/9AT pinout, 1.5SMC75CA-M3/9AT application, or 1.5SMC75CA-M3/9AT equivalent, this page delivers verified electrical parameters, SMC (DO-214AB) package details, bidirectional clamping behavior, thermal derating curves, and AEC-Q101-qualified alternatives for automotive-grade design-in.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance during positive and negative transients. Its glass-passivated junction ensures stable leakage (<1 μA at 64.1 V) and fast response time (<1 ns), while low incremental surge resistance supports effective energy diversion without thermal runaway.
The device is rated for 150 °C maximum junction temperature and exhibits a +0.105 %/°C temperature coefficient of VBR, enabling predictable voltage shift under thermal stress. Mounting on 8.0 mm × 8.0 mm copper pads achieves specified 1500 W pulse handling per JEDEC standards, with MSL Level 1 moisture sensitivity and halogen-free RoHS compliance (M3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 64.1 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - Voltage range where device enters avalanche breakdown; ensures reliable triggering across production lot. |
| VC (Clamping) | 104 V at 14.6 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress. |
| PPPM | 1500 W - Peak transient power dissipation capability; validates suitability for lightning-induced surges (IEC 61000-4-5 Level 4). |
| ID (Leakage) | <1 μA at VWM - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance nodes. |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments and thermally constrained industrial enclosures. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, and J-STD-002 solderability compliance. Bidirectional construction has no polarity marking - terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path (bidirectional) | Either terminal accepts positive or negative surge; no cathode band marking required - simplifies layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - eliminates need for dual-device solutions in AC-coupled or floating signal paths. |
| 1500 W peak pulse power | Withstands 10/1000 μs surges up to 14.6 A - meets IEC 61000-4-5 Ed. 3 requirements for industrial and automotive port protection. |
| Halogen-free & RoHS-compliant (M3) | Complies with IPC-1752A material declaration and EU Directive 2015/863 - supports green manufacturing and export compliance. |
| AEC-Q101 qualified option | Available as HM3 variant - validated for automotive applications including engine control units and ADAS sensor interfaces. |
| Low thermal resistance | RθJL = 15 °C/W - enables efficient heat transfer to PCB copper, sustaining repetitive surge events without thermal degradation. |
Applications
| Automotive Sensor Protection | Industrial Ethernet Port Protection |
|---|---|
|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ESD events in vehicle cabin modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential pair or supply rail to shunt transients before they reach PHY ICs. Use Value: Clamps to 104 V within nanoseconds, preserving signal integrity and preventing latch-up in 5 V or 3.3 V transceivers. |
Use Scenario: Safeguarding RJ45 Ethernet magnetics and PHY ICs against induced surges from nearby motor drives or relay switching. IC Role / Device Role / Timing Role: Common-mode TVS across transformer center taps or differential pairs to suppress common-mode transients. Use Value: 1500 W PPPM rating handles repeated 10/1000 μs surges per IEC 61000-4-5, avoiding degradation after 100+ events. |
| Telecom DSL Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding ADSL/VDSL line drivers and SLIC circuits from lightning-induced longitudinal surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Primary protection device mounted at line entry point, upstream of gas discharge tube secondary protection. Use Value: 64.1 V VWM allows full swing of ±48 V DC bias while clamping surges above 71.3 V - maintains baseline functionality during fault. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Across motor terminals or H-bridge outputs to absorb stored inductive energy during MOSFET turn-off. Use Value: Low clamping voltage (104 V) prevents MOSFET avalanche failure, extending lifetime of 60 V-rated power stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Lower PPPM (600 W), same VWM (64.1 V), SMB package (smaller footprint, higher RθJA) | Limited to lower-energy transients (e.g., ESD-only); unsuitable for lightning-level surges | Select when board space is critical and surge threat level is ≤IEC 61000-4-2 Level 4 only. |
| 1.5KE75CA | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly | Requires manual or wave-solder rework; not viable for high-volume automated production | Choose only for legacy repair, prototyping, or mixed-technology boards where SMT is unavailable. |
Compared with SMBJ75CA and 1.5KE75CA, the 1.5SMC75CA-M3/9AT uniquely balances 1500 W surge capacity, SMC surface-mount compatibility, and halogen-free compliance - making it the preferred choice for new automotive and industrial designs requiring AEC-Q101 readiness and automated manufacturing.
Availability
1.5SMC75CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial Ethernet ports, telecom DSL line protection, and consumer appliance motor control requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC75CA-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, repeatability, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC75CA-M3/9AT under a 10/1000 μs surge?
The 1.5SMC75CA-M3/9AT clamps to a maximum of 104 V when subjected to its rated 14.6 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC75CA-M3/9AT suitable for automotive applications?
Yes - the 1.5SMC75CA-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), and an AEC-Q101-qualified version (HM3) is available. While the M3 variant itself is commercial-grade, its construction - glass-passivated junction, 150 °C TJ max, and SMC package robustness - aligns with automotive environmental requirements, and many Tier 1 suppliers use it in non-safety-critical cabin modules pending full HM3 qualification.
How does the bidirectional design of the 1.5SMC75CA-M3/9AT affect PCB layout?
The 1.5SMC75CA-M3/9AT has no polarity marking and functions identically in either orientation, eliminating orientation-dependent placement errors. This simplifies layout for AC-coupled lines, differential buses (e.g., RS-485), or floating grounds - unlike unidirectional TVS diodes that require strict cathode/anode alignment relative to system ground.
What is the maximum steady-state power dissipation for the 1.5SMC75CA-M3/9AT?
The 1.5SMC75CA-M3/9AT has a maximum steady-state power dissipation (PD) of 6.5 W at TA = 50 °C with infinite heatsink conditions. In typical PCB layouts using 8.0 mm × 8.0 mm copper pads per terminal, derating applies above 25 °C ambient - consult Figure 2 in Vishay document 88303 for precise thermal derating curves.
Does the 1.5SMC75CA-M3/9AT meet UL recognition standards?
Yes - the 1.5SMC75CA-M3/9AT carries Underwriters Laboratories recognition under file E136766 for both unidirectional and bidirectional configurations, compliant with UL 497B for signal circuit protectors. This certification validates its safety performance in telecommunications and data line applications subject to regulatory review.
1.5SMC75CA-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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- 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)
1.5SMC75CA-M3/9AT FAQ
1.How can I place an order for 1.5SMC75CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75CA-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 1.5SMC75CA-M3/9AT reliable?
The price and inventory of 1.5SMC75CA-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 1.5SMC75CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC75CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75CA-M3/9AT?
1.5SMC75CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75CA-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 1.5SMC75CA-M3/9AT?
For technical support, including 1.5SMC75CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75CA-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC75CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75CA-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 1.5SMC75CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC75CA-M3/9AT?
All 1.5SMC75CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75CA-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 1.5SMC75CA-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC75CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75CA-M3/9AT Tags
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