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Vishay General Semiconductor - Diodes Division 1.5SMC7.5CA-M3/57T
- Part No.:
- 1.5SMC7.5CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5CA-M3/57T.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,242
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Product details
Overview
1.5SMC7.5CA-M3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 7.5 V standoff voltage (VWM), 11.3 V maximum clamping voltage (VC) at 133 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), making it suitable for protecting I/O lines and power rails in automotive sensor interfaces and industrial control inputs.
For engineers reviewing the 1.5SMC7.5CA-M3/57T datasheet, 1.5SMC7.5CA-M3/57T pinout, 1.5SMC7.5CA-M3/57T application, or 1.5SMC7.5CA-M3/57T equivalent, this device delivers verified bidirectional clamping performance, halogen-free RoHS compliance, and AEC-Q101 qualification readiness - critical for automotive-grade transient suppression where polarity-agnostic surge immunity and thermal reliability are required.
Technical Context
The 1.5SMC7.5CA-M3/57T operates as a bidirectional avalanche diode with symmetrical breakdown behavior in both polarities, enabling single-device protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<500 µA at VWM), while the SMC package provides low thermal resistance (RθJL = 15 °C/W) for reliable energy dissipation during repetitive transients.
It meets J-STD-020 MSL Level 1 and supports automated placement with matte tin-plated leads. The device is rated for -65 °C to +150 °C operating junction temperature and exhibits a VBR range of 7.13–7.88 V at 10 mA test current, confirming tight manufacturing tolerance essential for predictable clamping onset in precision analog or digital interface protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 6.40 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 7.13–7.88 V at 10 mA - Confirmed avalanche initiation range; ensures consistent turn-on across production lots |
| VC (Clamping) | 11.3 V at 133 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream ICs |
| PPPM | 1500 W - Surge energy handling capacity; enables protection against lightning-induced transients per IEC 61000-4-5 |
| IPPM | 133 A - Peak current capability under standard 10/1000 µs waveform; validates robustness against ESD and inductive switching spikes |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - Industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal relief; compatible with reflow and wave soldering |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional polarity distinction; either terminal serves as anode or cathode depending on transient polarity - eliminates orientation errors during assembly |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded circuits without external polarity management |
| 1500 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Combination Wave (10/700 µs) |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for automotive and industrial end equipment without compromising surge performance |
| MSL Level 1 moisture sensitivity | Allows indefinite floor life before reflow; eliminates bake-out requirement and reduces manufacturing overhead |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage overshoot during fast transients, preserving timing margins in high-speed digital interfaces |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Transceiver Protection |
|---|---|
Use Scenario: Protecting LIN/CAN physical layer receivers and analog sensor outputs (e.g., pressure, temperature) from battery line transients and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground, clamping surges before they reach the transceiver input stage. Use Value: Prevents latch-up or permanent damage to automotive-grade transceivers (e.g., TJA1042, SN65HVD230) during load dump events up to 120 V. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs exposed to motor drive noise and long-cable induced surges. IC Role / Device Role / Timing Role: Differential-line TVS across A/B bus terminals and to ground, suppressing common-mode and differential-mode transients simultaneously. Use Value: Maintains data integrity by limiting bus voltage excursion to ≤11.3 V during 1 kV/0.5 kΩ IEC 61000-4-5 surges, preventing false triggering or receiver saturation. |
| Consumer USB Port ESD Protection | Power Supply Input Clamp |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines in set-top boxes and smart displays, supplementing internal IC-level protection. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed directly at connector, shunting ±15 kV HBM ESD pulses to ground. Use Value: Adds system-level robustness beyond integrated protection diodes, reducing field failure rates in high-handling consumer environments. |
Use Scenario: Input rail clamp on 5 V or 12 V DC power supplies feeding microcontrollers and sensors in IoT gateways. IC Role / Device Role / Timing Role: Primary overvoltage limiter placed after bulk filter capacitor, absorbing inductive kickback from relay coils or solenoids. Use Value: Limits supply rail overshoot to 11.3 V during 100 A inductive switch-off events, preventing brownout resets or regulator latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA | Lower peak power (600 W), same VWM/VC, SMB (DO-214AA) package - 30% smaller footprint, lower thermal mass | Best suited for space-constrained consumer PCBs with moderate surge exposure (IEC 61000-4-2 only) | Select when board area is critical and surge threat level does not exceed 1 kV/42 Ω IEC 61000-4-5 |
| 1.5KE7.5CA | Higher peak power (1500 W), axial-leaded DO-15 package - no SMT compatibility, higher parasitic inductance | Used in legacy through-hole designs or prototyping; unsuitable for automated high-volume assembly | Choose only for manual assembly or repair scenarios where SMT infrastructure is unavailable |
Compared with SMBJ7.5CA and 1.5KE7.5CA, the 1.5SMC7.5CA-M3/57T uniquely balances high-power SMT capability, bidirectional symmetry, and halogen-free compliance - making it the preferred choice for new automotive and industrial designs requiring AEC-Q101 alignment and reflow-ready packaging.
Availability
1.5SMC7.5CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication interfaces, consumer USB peripherals, and DC power input stages requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for 1.5SMC7.5CA-M3/57T 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was developed specifically for surface-mount transient suppression in harsh environments, emphasizing high surge robustness, tight parametric distribution, and qualification to AEC-Q101 for automotive electronics.
FAQ
What is the clamping voltage of the 1.5SMC7.5CA-M3/57T under a 10/1000 µs surge?
The 1.5SMC7.5CA-M3/57T has a maximum clamping voltage (VC) of 11.3 V at 133 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88303 and reflects the actual voltage imposed on the protected circuit during worst-case transient conditions - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC7.5CA-M3/57T suitable for automotive applications?
Yes, the 1.5SMC7.5CA-M3/57T is halogen-free and RoHS-compliant (M3 suffix), and belongs to the AEC-Q101-qualified 1.5SMC family. While the specific part number 1.5SMC7.5CA-M3/57T carries the commercial-grade M3 suffix, its base design meets AEC-Q101 stress test requirements - confirmed by Vishay's qualification documentation for the 1.5SMC series. For certified automotive use, order with HE3 or HM3 suffixes (e.g., 1.5SMC7.5CAHE3_A).
How does the bidirectional configuration of the 1.5SMC7.5CA-M3/57T affect PCB layout?
The 1.5SMC7.5CA-M3/57T has no polarity marking and functions identically in either orientation, simplifying PCB layout and eliminating risk of incorrect placement. Engineers can route symmetric traces to both terminals without regard to anode/cathode direction - particularly advantageous for differential signal lines like RS-485 or CAN, where balanced layout is essential for noise immunity.
What is the thermal resistance of the 1.5SMC7.5CA-M3/57T, and how does it impact derating?
The 1.5SMC7.5CA-M3/57T has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. This means sustained power dissipation must be limited to ≤6.5 W at 50 °C ambient, and peak surge capability de-rates linearly above 25 °C per Figure 2 in the datasheet - critical for thermal design in enclosed automotive enclosures.
Does the 1.5SMC7.5CA-M3/57T meet industry surge immunity standards?
Yes, the 1.5SMC7.5CA-M3/57T is validated for IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) compliance when applied with appropriate PCB layout (e.g., short traces, ground plane coupling). Its 1500 W peak pulse power and 11.3 V clamping enable pass-level protection against 1 kV/2 Ω combination wave tests - widely adopted in automotive and industrial equipment certification.
1.5SMC7.5CA-M3/57T 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-M3/57T FAQ
1.How can I place an order for 1.5SMC7.5CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5CA-M3/57T 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-M3/57T reliable?
The price and inventory of 1.5SMC7.5CA-M3/57T 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-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5CA-M3/57T?
1.5SMC7.5CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5CA-M3/57T 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-M3/57T?
For technical support, including 1.5SMC7.5CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5CA-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC7.5CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5CA-M3/57T 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-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5CA-M3/57T?
All 1.5SMC7.5CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5CA-M3/57T, 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-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC7.5CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5CA-M3/57T Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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