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Vishay General Semiconductor - Diodes Division 1.5SMC39CA-M3/57T
- Part No.:
- 1.5SMC39CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC39CA-M3/57T.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,255
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Product details
Overview
1.5SMC39CA-M3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection on signal and power lines. It features a 33.3 V standoff voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, 53.9 V maximum clamping voltage (VC) at 27.8 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC39CA-M3/57T datasheet, 1.5SMC39CA-M3/57T pinout, 1.5SMC39CA-M3/57T application, or 1.5SMC39CA-M3/57T equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal derating curves, SMC package mechanical data, and AEC-Q101-comparable alternatives for ESD and lightning surge protection design validation.
Technical Context
The 1.5SMC39CA-M3/57T operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while MSL Level 1 moisture sensitivity supports lead-free reflow up to 260 °C peak.
It delivers 1500 W peak pulse power under standardized 10/1000 µs waveform with 0.01% duty cycle, and exhibits 15 °C/W typical junction-to-lead thermal resistance - enabling effective heat dissipation when mounted on 8.0 mm × 8.0 mm copper pads per terminal. Junction temperature range spans –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33.3 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 24 V nominal systems. |
| VBR (min/max) | 37.1 V / 41.0 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 53.9 V at 27.8 A - Clamped voltage during 1500 W transient; limits downstream IC stress below 5.5 V logic rail tolerance. |
| PPPM | 1500 W - Peak pulse power rating with 10/1000 µs waveform; meets IEC 61000-4-5 Level 4 surge immunity requirements. |
| TJ Range | –65 °C to +150 °C - Full operational junction temperature range; supports under-hood automotive and industrial ambient conditions. |
| Package | SMC (DO-214AB) - Surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place. |
| Construction | Halogen-free, RoHS-compliant, matte tin-plated leads - Meets J-STD-002 solderability and JESD22-B102 whisker resistance Class 2. |
Pinout & Package
SMC (DO-214AB) package: two-terminal, symmetrical bidirectional device with no polarity marking. Cathode/anode designation does not apply; terminals are electrically identical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient Current Input/Output | Either terminal accepts surge current; bidirectional conduction enables single-device protection of AC-coupled or floating lines. |
| Terminal 2 | Transient Current Input/Output | Paired with Terminal 1 to complete low-impedance clamping path; no ground reference required for operation. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W Peak Pulse Power | Supports IEC 61000-4-5 surge testing up to 4 kV (line-earth) without degradation when properly mounted. |
| Low Incremental Surge Resistance | Enables tight clamping (VC/IPPM = 1.93 Ω) to minimize voltage overshoot during fast transients. |
| MSL Level 1 Rating | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking or special handling. |
| AEC-Q101 Qualified Variant Available | HM3 suffix versions (e.g., 1.5SMC39CAHM3_A/H) meet automotive reliability stress tests for engine control and ADAS modules. |
| Glass-Passivated Junction | Ensures long-term stability of VBR and low leakage (<1 µA) across temperature and humidity cycling. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and chassis ground, responding within <1 ns to limit voltage excursion. Use Value: Maintains signal integrity by clamping transients to ≤53.9 V, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field-wiring surges and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage shunt located at connector entry point, conducting >27 A peak current without failure. Use Value: Eliminates need for series impedance or additional filtering stages due to low dynamic impedance and repeatable clamping performance. |
| Telecom Line Card Surge Suppression | Consumer USB/DisplayPort ESD Clamp |
Use Scenario: Secondary protection on Ethernet PHY lines (10/100BASE-TX) and xDSL line drivers exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Coordinated clamp with upstream GDT or polymer PTC, absorbing residual energy after primary suppression. Use Value: Withstands repetitive 1500 W pulses at 0.01% duty cycle, ensuring multi-year field reliability in outdoor cabinet deployments. |
Use Scenario: Board-level ESD protection for high-speed differential pairs (e.g., USB 2.0 D+/D–, DisplayPort AUX) in laptops and docking stations. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) bidirectional clamp placed adjacent to connector, minimizing signal distortion. Use Value: Provides ±15 kV air-gap and ±8 kV contact IEC 61000-4-2 protection without degrading 480 Mbps signal rise time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Lower peak power (600 W), smaller SMB package (DO-214AA), 33 V VWM, 53.3 V VC @ 11.8 A | Better suited for space-constrained consumer PCBs; insufficient for IEC 61000-4-5 Level 4 compliance. | Select when board area is critical and surge threat level is limited to IEC 61000-4-2/4-4 only. |
| 1.5KE39CA | Through-hole TO-218 package, same 33.3 V VWM and 53.9 V VC, but higher thermal mass and manual assembly requirement | Preferred for legacy industrial designs requiring serviceability or high-reliability through-hole mounting. | Choose when reworkability, creepage distance, or legacy manufacturing infrastructure dictates axial/TO-218 form factor. |
Compared with SMBJ33CA and 1.5KE39CA, the 1.5SMC39CA-M3/57T uniquely balances 1500 W surge capacity, SMC surface-mount compatibility, and halogen-free RoHS compliance - making it optimal for new automotive and industrial designs requiring AEC-Q101-aligned reliability without through-hole constraints.
Availability
1.5SMC39CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, telecom line cards, and consumer USB interface protection requiring stable component supply and full traceability.
Supply support for 1.5SMC39CA-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where compact size, repeatable clamping, and AEC-Q101 qualification are essential.
FAQ
What is the standoff voltage (VWM) of the 1.5SMC39CA-M3/57T?
The 1.5SMC39CA-M3/57T has a standoff voltage (VWM) of 33.3 V, meaning it remains non-conductive up to this reverse voltage under normal operating conditions. This value is confirmed in the Vishay 1.5SMC Series datasheet (Document Number: 88303) and ensures compatibility with 24 V nominal systems while maintaining adequate margin before clamping initiates.
Is the 1.5SMC39CA-M3/57T unidirectional or bidirectional?
The 1.5SMC39CA-M3/57T is a bidirectional transient voltage suppressor, indicated by the "CA" suffix. It provides symmetrical clamping in both polarities, with no cathode band marking and identical electrical characteristics in either direction - ideal for protecting AC-coupled, differential, or floating signal lines.
What package type does the 1.5SMC39CA-M3/57T use?
The 1.5SMC39CA-M3/57T uses the SMC (DO-214AB) surface-mount package, measuring 7.75 mm × 6.22 mm with a height of 2.62 mm. Its low-profile construction supports automated placement, and its thermal resistance (RθJL = 15 °C/W) enables efficient heat transfer when soldered to recommended 8.0 mm × 8.0 mm copper pads.
Does the 1.5SMC39CA-M3/57T meet automotive qualification standards?
The base 1.5SMC39CA-M3/57T is halogen-free and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the functionally identical 1.5SMC39CAHM3_A/H variant - which carries the HM3 suffix and full AEC-Q101 qualification - for automotive applications such as engine control units and ADAS sensor modules.
What is the maximum clamping voltage (VC) of the 1.5SMC39CA-M3/57T at rated peak pulse current?
The 1.5SMC39CA-M3/57T has a maximum clamping voltage (VC) of 53.9 V at its rated peak pulse current (IPPM) of 27.8 A, measured under the standard 10/1000 µs waveform. This value is specified in the Vishay 1.5SMC Series datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
1.5SMC39CA-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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 27.8A
- 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)
1.5SMC39CA-M3/57T FAQ
1.How can I place an order for 1.5SMC39CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC39CA-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 1.5SMC39CA-M3/57T reliable?
The price and inventory of 1.5SMC39CA-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 1.5SMC39CA-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC39CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC39CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC39CA-M3/57T?
1.5SMC39CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC39CA-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 1.5SMC39CA-M3/57T?
For technical support, including 1.5SMC39CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC39CA-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC39CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC39CA-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 1.5SMC39CA-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC39CA-M3/57T?
All 1.5SMC39CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC39CA-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 1.5SMC39CA-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC39CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC39CA-M3/57T Tags
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