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Vishay General Semiconductor - Diodes Division 1.5SMC11CA-M3/57T
- Part No.:
- 1.5SMC11CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11CA-M3/57T.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,281
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Product details
Overview
1.5SMC11CA-M3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features a 11 V breakdown voltage (VBR min/max = 10.5–11.6 V at 1 mA), 9.4 V stand-off voltage (VWM), 15.6 V clamping voltage (VC) at 96.2 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 μs waveform - used to safeguard automotive sensor interfaces, industrial I/O ports, and telecom line drivers.
For engineers reviewing the 1.5SMC11CA-M3/57T datasheet, 1.5SMC11CA-M3/57T pinout, 1.5SMC11CA-M3/57T application, or 1.5SMC11CA-M3/57T equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal derating curves, SMC package mechanical data, and AEC-Q101-qualified alternatives for automotive-grade ESD and lightning surge protection design.
Technical Context
The 1.5SMC11CA-M3/57T operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity marking. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for protecting sensitive analog front-ends and digital I/O against inductive switching spikes and EFT bursts.
Rated for 150 °C maximum junction temperature and MSL Level 1 (260 °C reflow peak), it supports automated SMT placement on standard PCB copper pads (8.0 mm × 8.0 mm per terminal). The device meets UL 497B recognition (QVGQ2) and complies with JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V at IT = 1 mA - defines precise avalanche initiation threshold for reliable bidirectional clamping |
| VWM | 9.4 V - maximum continuous reverse operating voltage before leakage exceeds 5 μA; sets safe margin below VBR |
| VC @ IPPM | 15.6 V at 96.2 A (10/1000 μs) - peak clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 1500 W - peak pulse power handling capacity under standardized surge waveform; determines survivability of lightning-induced transients |
| IPPM | 96.2 A - maximum non-repetitive surge current the device can shunt without failure |
| TJ max | 150 °C - maximum junction temperature rating; governs thermal design margin and board layout copper area requirements |
| RθJA | 75 °C/W - typical junction-to-ambient thermal resistance; used to calculate temperature rise under DC power dissipation |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); cathode band omitted for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive surges and anode during negative surges - no polarity marking required |
| Cathode | Transient return path (bidirectional) | Acts as anode during positive surges and cathode during negative surges - symmetrical conduction in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly mounted on 8 mm × 8 mm copper pads |
| Low clamping ratio (VC/VBR ≈ 1.49) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
| AEC-Q101 qualified option available | HM3 suffix variants meet automotive reliability standards for engine control, ADAS sensor interfaces, and infotainment systems |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile compatibility without baking preconditioning |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and temperature/pressure sensor signal lines from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential pair or single-ended sensor output to ground. Use Value: Limits transient voltage to ≤15.6 V during 10/1000 μs surges, preventing latch-up or gate oxide damage in 3.3 V/5 V sensor signal conditioning ICs. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS between input terminal and ground, activated within <1 ns of overvoltage event. Use Value: Clamps induced transients to 15.6 V while maintaining <5 μA leakage at 9.4 V, preserving measurement accuracy and long-term calibration stability. |
| Telecom Line Driver Protection | Consumer USB Port ESD Suppression |
Use Scenario: Shielding RS-485/RS-232 transceivers and Ethernet PHYs from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of secondary protection (e.g., polymer PTC + capacitor). Use Value: Absorbs up to 1500 W of surge energy without degradation, enabling compliance with ITU-T K.20/K.21 telecom surge immunity standards. |
Use Scenario: Secondary-level protection for USB 2.0 data lines (D+/D−) in set-top boxes and smart displays exposed to human-body-model ESD events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed across differential pair to limit ESD voltage without distorting signal integrity. Use Value: Provides 15.6 V clamping at 96.2 A while adding negligible capacitance - preserves USB 2.0 eye diagram and signal rise/fall times. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | Lower peak power rating (600 W), same VBR/VC, SMB (DO-214AA) package - 30% smaller footprint, lower thermal mass | Best suited for space-constrained consumer electronics where 600 W surge margin suffices | Select when board area is limited and surge threat level is IEC 61000-4-2/4-4 only - not recommended for lightning-prone industrial or automotive environments |
| 1.5KE11CA | Higher peak power (1500 W), axial-leaded DO-15 package - requires through-hole mounting and manual assembly | Used in legacy industrial power supplies and telecom chassis where through-hole reliability and serviceability are prioritized | Choose for repairable designs or where automated SMT is unavailable; avoid if RoHS-compliant halogen-free requirement applies (1.5KE11CA lacks M3 suffix) |
Compared with SMBJ11CA and 1.5KE11CA, the 1.5SMC11CA-M3/57T uniquely combines 1500 W SMT surge capability, halogen-free RoHS compliance, MSL Level 1 reflow readiness, and bidirectional symmetry - making it optimal for new automotive and industrial designs requiring high-reliability, high-volume production compatibility.
Availability
1.5SMC11CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line driver surge suppression requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for 1.5SMC11CA-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, MOSFETs, and protection devices with emphasis on high-reliability, automotive-qualified, and industry-standard solutions.
The 1.5SMC Series was developed specifically for robust, high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge handling and AEC-Q101 qualification are mandatory.
FAQ
What does the "CA" suffix mean in 1.5SMC11CA-M3/57T?
The "CA" suffix in 1.5SMC11CA-M3/57T indicates a bidirectional configuration - meaning the device clamps voltage transients equally in both polarities, with no cathode marking. This distinguishes it from unidirectional variants (e.g., 1.5SMC11A-M3/57T) that require correct polarity orientation during PCB layout. The 1.5SMC11CA-M3/57T is ideal for protecting AC-coupled or floating signal paths where polarity reversal may occur.
Is 1.5SMC11CA-M3/57T AEC-Q101 qualified?
The base part number 1.5SMC11CA-M3/57T is commercial-grade and halogen-free RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the automotive-qualified variant 1.5SMC11CAHM3_A/M3/57T (with HM3 suffix and revision code "A"), which meets AEC-Q101 stress test requirements for temperature cycling, humidity bias, and accelerated life testing - suitable for under-hood and ADAS applications.
What is the clamping voltage of 1.5SMC11CA-M3/57T at its rated peak pulse current?
The 1.5SMC11CA-M3/57T has a maximum clamping voltage (VC) of 15.6 V at its rated peak pulse current (IPPM) of 96.2 A, measured using the standardized 10/1000 μs double-exponential surge waveform. This value represents the highest voltage the protected circuit will experience during a worst-case transient event, ensuring compatibility with 3.3 V and 5 V logic interfaces.
Can 1.5SMC11CA-M3/57T be used in place of a unidirectional TVS like 1.5SMC11A-M3/57T?
No - the 1.5SMC11CA-M3/57T is bidirectional and lacks polarity marking, while 1.5SMC11A-M3/57T is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC signals or floating grounds, whereas unidirectional devices are required for DC-biased lines where reverse conduction must be blocked. Using 1.5SMC11CA-M3/57T in a unidirectional design may cause unintended conduction during normal operation.
What PCB pad layout is recommended for optimal thermal and surge performance of 1.5SMC11CA-M3/57T?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for the 1.5SMC11CA-M3/57T to achieve rated 1500 W peak pulse power and proper thermal dissipation. Smaller pads reduce surge current handling and increase junction temperature - potentially causing premature failure. Internal layer copper pours connected via multiple vias further improve heat spreading and reliability under repetitive surge conditions.
1.5SMC11CA-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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96.2A
- 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)
1.5SMC11CA-M3/57T FAQ
1.How can I place an order for 1.5SMC11CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11CA-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 1.5SMC11CA-M3/57T reliable?
The price and inventory of 1.5SMC11CA-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 1.5SMC11CA-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC11CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11CA-M3/57T?
1.5SMC11CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11CA-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 1.5SMC11CA-M3/57T?
For technical support, including 1.5SMC11CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11CA-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC11CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11CA-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 1.5SMC11CA-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC11CA-M3/57T?
All 1.5SMC11CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11CA-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 1.5SMC11CA-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC11CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC11CA-M3/57T Tags
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