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Vishay General Semiconductor - Diodes Division 1.5SMC15CA-M3/57T
- Part No.:
- 1.5SMC15CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15CA-M3/57T.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,100
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Product details
Overview
1.5SMC15CA-M3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 12.8 V stand-off voltage (VWM), and clamps to ≤21.2 V at 70.8 A peak pulse current (IPPM). It protects signal lines and power rails in automotive sensor interfaces and industrial I/O modules.
For engineers reviewing the 1.5SMC15CA-M3/57T datasheet, 1.5SMC15CA-M3/57T pinout, 1.5SMC15CA-M3/57T application, or 1.5SMC15CA-M3/57T equivalent, key selection criteria include bidirectional clamping capability, M3 halogen-free RoHS compliance, 150 °C max junction temperature, and compatibility with automated SMT assembly on 8 mm × 8 mm copper pads.
Technical Context
This TVS device operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM) across -65 °C to +150 °C operating range.
The 1.5SMC15CA-M3/57T delivers fast response time (<1.0 ns) and low incremental surge resistance, achieving clamping within 10/1000 μs waveform limits while maintaining thermal resistance of 75 °C/W (junction-to-ambient) under standard PCB mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12.8 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 14.3 V / 15.8 V at 1.0 mA - Verified breakdown threshold ensures predictable turn-on during transients. |
| IPPM | 70.8 A - Peak pulse current handling at 10/1000 μs waveform; determines survivability against lightning-induced surges. |
| VC | ≤21.2 V - Clamping voltage at IPPM; limits stress on downstream ICs like microcontrollers or CAN transceivers. |
| PPPM | 1500 W - Peak pulse power rating; supports high-energy transient suppression without thermal runaway. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 0.320" x 0.246" footprint; compatible with JEDEC-compliant reflow profiles. |
Pinout & Package
SMC (DO-214AB) package: two-terminal, symmetrical bidirectional device with no polarity marking; terminals are matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no functional distinction required in layout. |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing symmetrical clamping path; enables placement across differential lines or AC rails without orientation check. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, RS-485 buses, or ungrounded power rails without polarity concerns. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) when mounted on recommended 8 mm × 8 mm copper pads. |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial end equipment without compromising surge robustness. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT line integration and inventory management. |
| AEC-Q101 qualification option | Available in HM3 variant for automotive applications requiring validated reliability under temperature cycling and humidity testing. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Communication |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output and ECU input to clamp transients before they reach precision ADC front-end. Use Value: Maintains signal integrity by limiting clamped voltage to 21.2 V while surviving 70.8 A surges-preventing latch-up or damage to 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLCs subjected to ground bounce and EFT bursts. IC Role / Device Role / Timing Role: Placed across A/B differential pair to suppress common-mode surges without distorting data eye diagram. Use Value: Symmetrical clamping ensures equal protection on both lines, preserving differential signaling margins and meeting IEC 61000-4-4 Level 3 immunity. |
| Consumer USB Power Delivery | Telecom DSL Line Interface |
Use Scenario: Guarding 5 V VBUS lines in USB-C PD adapters against hot-plug induced transients and capacitive coupling noise. IC Role / Device Role / Timing Role: Mounted at connector entry point to shunt surge energy before it reaches buck converter controller and USB protocol IC. Use Value: 12.8 V VWM provides 20 % margin above 5 V rail while 21.2 V clamping avoids overvoltage stress on 20 V-rated MOSFETs and controllers. |
Use Scenario: Shielding ADSL/VDSL line drivers from lightning-induced surges entering via outdoor telephone wiring. IC Role / Device Role / Timing Role: Connected between tip/ring and ground in hybrid coupler circuit to absorb longitudinal mode surges. Use Value: 1500 W rating handles telecom-grade lightning surges (10/700 μs); bidirectional symmetry matches balanced line architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Lower peak pulse power (600 W), smaller SMB package (DO-214AA), higher RθJA (90 °C/W). | Best suited for space-constrained consumer electronics where full 1500 W is not required. | Select SMBJ15CA only if board area is critical and surge threat level is limited to IEC 61000-4-5 Level 2. |
| 1.5KE15CA | Through-hole TO-204AE (DO-201AE) package, same 1500 W rating but slower thermal response and no MSL Level 1 rating. | Used in legacy industrial power supplies where wave soldering remains standard. | Choose 1.5KE15CA only when through-hole assembly is mandated and reflow compatibility is not needed. |
Compared with SMBJ15CA and 1.5KE15CA, the 1.5SMC15CA-M3/57T uniquely combines SMT scalability, halogen-free compliance, and full 1500 W capability in a JEDEC-standard SMC outline-making it optimal for new automotive and industrial designs requiring AEC-Q101 readiness and automated manufacturing.
Availability
1.5SMC15CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communication interfaces, consumer USB power delivery, and telecom line interface applications requiring stable component supply and halogen-free compliance.
Supply support for 1.5SMC15CA-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 diodes, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where robustness, consistency, and regulatory compliance are non-negotiable.
FAQ
What is the clamping voltage of the 1.5SMC15CA-M3/57T at its rated peak pulse current?
The 1.5SMC15CA-M3/57T clamps to a maximum of 21.2 V when subjected to its rated peak pulse current of 70.8 A under the standardized 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.
Is the 1.5SMC15CA-M3/57T suitable for automotive applications?
Yes-the 1.5SMC15CA-M3/57T is halogen-free and RoHS-compliant, and its base series is AEC-Q101 qualified in HM3 variants. While the M3 suffix itself denotes commercial-grade halogen-free construction, the identical electrical and thermal specs enable direct use in non-safety-critical automotive subsystems such as body control modules and infotainment I/O protection.
Does the 1.5SMC15CA-M3/57T require orientation during PCB placement?
No-the 1.5SMC15CA-M3/57T is a bidirectional TVS diode with symmetrical characteristics; there is no cathode band or polarity marking. Either terminal may connect to either side of a differential line or AC-coupled node, eliminating orientation checks during automated placement.
What is the maximum operating temperature for the 1.5SMC15CA-M3/57T?
The 1.5SMC15CA-M3/57T has a maximum junction temperature (TJ) of +150 °C and operates across a full range of -65 °C to +150 °C. This allows deployment in under-hood automotive locations, industrial motor drives, and outdoor telecom enclosures without derating at ambient temperatures up to +125 °C.
How does the 1.5SMC15CA-M3/57T differ from unidirectional versions like 1.5SMC15A-M3/57T?
The 1.5SMC15CA-M3/57T is bidirectional with symmetrical breakdown in both polarities, whereas 1.5SMC15A-M3/57T is unidirectional and conducts only in reverse bias. The "CA" suffix indicates bidirectional functionality, making the 1.5SMC15CA-M3/57T appropriate for AC signal lines, differential buses, and floating power domains where polarity is undefined.
1.5SMC15CA-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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- 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)
1.5SMC15CA-M3/57T FAQ
1.How can I place an order for 1.5SMC15CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15CA-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 1.5SMC15CA-M3/57T reliable?
The price and inventory of 1.5SMC15CA-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 1.5SMC15CA-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC15CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15CA-M3/57T?
1.5SMC15CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15CA-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 1.5SMC15CA-M3/57T?
For technical support, including 1.5SMC15CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15CA-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC15CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15CA-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 1.5SMC15CA-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC15CA-M3/57T?
All 1.5SMC15CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15CA-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 1.5SMC15CA-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC15CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15CA-M3/57T Tags
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