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Vishay General Semiconductor - Diodes Division SM15T100CA-M3/57T
- Part No.:
- SM15T100CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T100CA-M3/57T.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,217
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Product details
Overview
SM15T100CA-M3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 137 V maximum clamping voltage at 11.0 A IPPM, and 85.5 V stand-off voltage. It protects signal lines and power rails in automotive sensor units and industrial I/O interfaces against lightning-induced and switching transients.
For engineers reviewing the SM15T100CA-M3/57T datasheet, SM15T100CA-M3/57T pinout, SM15T100CA-M3/57T application, or SM15T100CA-M3/57T equivalent, key selection criteria include bidirectional clamping capability, 10.6 × 10⁻⁴/°C temperature coefficient of breakdown voltage, halogen-free RoHS compliance, and AEC-Q101 qualification readiness via HM3 suffix variants.
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical breakdown (95.0–105 V) and clamping (137 V) characteristics in either direction. Its low-inductance SMC package and glass-passivated junction enable fast response to transient threats while maintaining stable thermal resistance (RθJA = 75 °C/W).
The device sustains 11.0 A peak pulse current under 10/1000 μs waveform at TA = 25 °C when mounted on 8.0 mm × 8.0 mm copper pads, and derates linearly above 25 °C per Fig. 2 - supporting reliable operation up to TJ = 150 °C in high-temperature automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - withstands lightning surge and inductive switching transients without failure |
| Stand-off Voltage (VWM) | 85.5 V - defines maximum continuous reverse operating voltage before conduction begins |
| Breakdown Voltage (VBR) | 95.0–105 V at 1 mA - ensures precise, repeatable clamping onset in both directions |
| Maximum Clamping Voltage (VC) | 137 V at 11.0 A IPPM - limits downstream voltage stress during worst-case transient events |
| Operating Temperature Range | −65 °C to +150 °C - supports under-hood automotive and industrial ambient conditions |
| Package | SMC (DO-214AB) - surface-mount footprint compatible with automated assembly and IPC-7351B land patterns |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix), MSL Level 1 - enables lead-free reflow without moisture sensitivity concerns |
Pinout & Package
SM15T100CA-M3/57T uses the standard SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, no polarity marking (bidirectional), and 0.305" × 0.220" body dimensions. Mounting requires 8.0 mm × 8.0 mm copper pads per terminal per JEDEC recommendations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (negative polarity) | Conducts during negative-going surges; symmetrical with Cathode in bidirectional operation |
| Cathode | Transient current entry point (positive polarity) | Conducts during positive-going surges; functionally identical to Anode due to CA suffix bidirectionality |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power rating | Enables protection against IEC 61000-4-5 Level 4 (4 kV) surges without derating in typical PCB layouts |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage stress on protected ICs like CAN transceivers or ADC front-ends |
| 10.6 × 10⁻⁴/°C αT coefficient | Ensures predictable VBR drift across −40 °C to +125 °C operating range |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free soldering without pre-baking or special handling |
| AEC-Q101 qualification path | HM3 suffix variants are qualified for automotive powertrain and chassis applications |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load-dump and ESD events in engine control modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains 85.5 V stand-off while clamping to 137 V at 11 A, preserving signal integrity for 5 V or 12 V sensor supplies. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to motor drive noise and relay coil kickback. IC Role / Device Role / Timing Role: Fast-response transient suppressor installed between field wiring and optocoupler isolation barrier. Use Value: Limits induced voltage spikes to ≤137 V within 1 ns, preventing false triggering or latch-up in 24 V DC I/O stages. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges entering via RJ-45 jacks in outdoor access points. IC Role / Device Role / Timing Role: Primary-level TVS on unshielded twisted-pair lines, coordinated with secondary GDT or MOV stages. Use Value: Delivers 1500 W surge handling with <1 ns response time, meeting ITU-T K.21 Basic Protection Level requirements. |
Use Scenario: Input-stage overvoltage suppression in universal-input AC/DC adapters for smart home devices subjected to mains transients. IC Role / Device Role / Timing Role: Secondary-side DC bus protector after bridge rectifier, guarding against capacitor discharge spikes and rectifier reverse recovery overshoot. Use Value: Withstands repeated 10/1000 μs surges up to 137 V without degradation, extending adapter lifetime in noisy grid environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA | 600 W PPPM, SMB package, same VWM/VBR/VC ratings but lower surge capacity | Suitable only for lower-energy threats (IEC 61000-4-5 Level 2); not recommended for lightning-prone outdoor interfaces | Select when board space is constrained and surge threat level is ≤600 W; verify layout thermal relief for 75 °C/W RθJA |
| SMCJ100CA | 1500 W PPPM, same SMC package, but VWM = 85.5 V, VC = 137 V, and TJ max = 175 °C | Higher junction temperature rating enables use in hotter enclosures; identical clamping performance | Prefer for extended-temperature industrial designs where 150 °C TJ limit may be exceeded; otherwise functionally interchangeable |
Compared with SMBJ100CA and SMCJ100CA, SM15T100CA-M3/57T delivers identical 1500 W surge capability and 85.5 V stand-off in the SMC footprint, but with halogen-free construction and optimized thermal resistance for cost-sensitive automotive and industrial production.
Availability
SM15T100CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification pathway support.
Supply support for SM15T100CA-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 reliability, efficiency, and application-specific optimization.
The SM15T Series was developed to deliver high-power transient suppression in compact SMC packages for automotive, industrial, and telecom systems where space, thermal performance, and surge robustness are critical design constraints.
FAQ
What does the "CA" suffix indicate in SM15T100CA-M3/57T?
The "CA" suffix denotes a bidirectional configuration - meaning SM15T100CA-M3/57T provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional "A" variants, it has no cathode marking and conducts identically in either polarity, making it ideal for AC-coupled or differential signal lines such as CAN or RS-485 buses.
Is SM15T100CA-M3/57T AEC-Q101 qualified?
SM15T100CA-M3/57T itself carries the commercial-grade M3 suffix (halogen-free, RoHS-compliant). However, the HM3 variant (e.g., SM15T100CAHM3_A/H) is explicitly AEC-Q101 qualified. For automotive applications requiring formal qualification, specify the HM3 suffix version - SM15T100CA-M3/57T meets all electrical and mechanical specs but lacks the certified test report.
What is the maximum clamping voltage of SM15T100CA-M3/57T and at what current?
The maximum clamping voltage (VC) of SM15T100CA-M3/57T is 137 V, measured at a peak pulse current (IPPM) of 11.0 A using the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events.
How does the thermal resistance of SM15T100CA-M3/57T affect PCB layout?
SM15T100CA-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C under sustained 6.5 W power dissipation, designers must allocate sufficient copper area and avoid thermal bottlenecks - undersized pads will cause premature thermal shutdown or parametric shift.
Can SM15T100CA-M3/57T replace older SMAJ100A devices?
No - SM15T100CA-M3/57T is bidirectional (CA), while SMAJ100A is unidirectional (A) with cathode marking and asymmetric conduction. Substituting them risks incorrect polarity installation and failure to suppress negative transients. For direct unidirectional replacement, use SM15T100A-M3/57T; for bidirectional upgrade, confirm system-level symmetry requirements first.
SM15T100CA-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 11A
- 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)
SM15T100CA-M3/57T FAQ
1.How can I place an order for SM15T100CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T100CA-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 SM15T100CA-M3/57T reliable?
The price and inventory of SM15T100CA-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 SM15T100CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SM15T100CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T100CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T100CA-M3/57T?
SM15T100CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T100CA-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 SM15T100CA-M3/57T?
For technical support, including SM15T100CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T100CA-M3/57T requirements.
6.How does Aetrix verify that SM15T100CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T100CA-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 SM15T100CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SM15T100CA-M3/57T?
All SM15T100CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T100CA-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 SM15T100CA-M3/57T part is unused and in its original packaging.
Return procedure for SM15T100CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T100CA-M3/57T Tags
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