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Vishay General Semiconductor - Diodes Division SM15T24CA-E3/57T
- Part No.:
- SM15T24CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T24CA-E3/57T.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,692
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Product details
Overview
SM15T24CA-E3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 24 V standoff voltage (VWM), and clamping voltage of 33.2 V at 45 A peak pulse current. It protects signal lines and power rails in automotive sensor interfaces and industrial I/O modules against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T24CA-E3/57T datasheet, SM15T24CA-E3/57T pinout, SM15T24CA-E3/57T application, or SM15T24CA-E3/57T equivalent, key selection criteria include bidirectional clamping behavior, 24 V VWM, 33.2 V VC at 45 A, RoHS-compliant commercial-grade construction, and SMC package thermal performance under high-impedance surge conditions.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 22.8–25.2 V (min/max) under 1 mA test current. Its low clamping ratio (VC/VWM ≈ 1.38) ensures tight overvoltage limiting during 10/1000 μs transients up to 45 A.
Thermal resistance is characterized at RθJA = 75 °C/W (junction-to-ambient, on recommended 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W (junction-to-lead), supporting reliable operation up to TJ = 150 °C with 6.5 W steady-state power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 22.8 V / 25.2 V - Breakdown occurs within this range at 1 mA, confirming bidirectional symmetry |
| VC @ IPPM | 33.2 V @ 45 A - Clamping voltage during 10/1000 μs surge; limits downstream voltage stress |
| PPPM | 1500 W - Peak pulse power handling capability per standard waveform, critical for lightning immunity |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
| RoHS Status | E3 suffix - RoHS-compliant, commercial-grade, matte tin-plated leads per J-STD-002 |
Pinout & Package
SM15T24CA-E3/57T uses the SMC (DO-214AB) package: a surface-mount, bidirectional device with no polarity marking. The case is molded compound rated UL 94 V-0; terminals are matte tin-plated leads suitable for reflow soldering per J-STD-020 MSL Level 1 (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal 1 (cathode-band side not applicable) | Bidirectional conduction path - functions identically as anode or cathode depending on transient polarity |
| Cathode | Terminal 2 (no band marking) | Same physical terminal as Anode; symmetric structure eliminates polarity dependency in layout |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) in high-impedance circuits |
| Low clamping voltage (33.2 V @ 45 A) | Reduces voltage overshoot on 24 V systems, preserving margin for 3.3 V/5 V logic interfaces downstream |
| SMC package with MSL Level 1 rating | Supports standard lead-free reflow profiles without moisture sensitivity concerns |
| Glass passivated junction | Ensures stable VBR and leakage performance over temperature and lifetime in harsh environments |
| AEC-Q101 qualification option (HE3 suffix) | Provides validated reliability path for automotive applications without redesigning board layout |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control units exposed to load-dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning ICs. Use Value: Maintains signal integrity by limiting transient excursions to ≤33.2 V, preventing latch-up or damage to 24 V-tolerant analog front-ends. | Use Scenario: Safeguarding digital input modules in programmable logic controllers subjected to 24 V DC field wiring surges from relay coils and solenoid drivers. IC Role / Device Role / Timing Role: Primary overvoltage suppression element on each isolated input channel, mounted adjacent to terminal block. Use Value: Withstands repeated 1500 W pulses without degradation, extending maintenance intervals in factory automation systems. |
| Telecom Power Rail Protection | Consumer Appliance Motor Control |
Use Scenario: Guarding 24 V backup power rails in VoIP gateways and base station management units against induced lightning surges on Ethernet or alarm lines. IC Role / Device Role / Timing Role: Secondary-level TVS parallel to bulk capacitance, activated after primary gas discharge tube clamps. Use Value: Fast response (<1 ps) and low dynamic impedance ensure sub-microsecond clamping, reducing let-through energy to <10 mJ. | Use Scenario: Shielding microcontroller GPIOs and H-bridge gate drivers in smart washing machines and HVAC blowers from motor commutation spikes. IC Role / Device Role / Timing Role: Localized TVS on motor driver PCB near MOSFET source pins to suppress shoot-through-inducing voltage spikes. Use Value: 24 V VWM matches common appliance supply rails, while 33.2 V VC stays below MOSFET VDS rating margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | 600 W PPPM, same VWM/VC, SMB package (smaller footprint, higher RθJA) | Limited to lower-energy threats (IEC 61000-4-5 Level 2); unsuitable for direct lightning coupling | Select when space-constrained and threat level is defined as ≤600 W (e.g., internal board-level coupling only) |
| SMCJ24CA | 1500 W PPPM, identical VWM/VC, same SMC package but higher VBR tolerance (22.2–25.8 V) | Broader VBR spec allows wider manufacturing spread; functionally interchangeable in most 24 V designs | Prefer when tighter VBR control is unnecessary and cost optimization is prioritized |
Compared with SMBJ24CA and SMCJ24CA, SM15T24CA-E3/57T offers identical 24 V system compatibility and SMC mechanical fit, but delivers guaranteed 1500 W surge capacity with tighter VBR (22.8–25.2 V) - making it optimal for AEC-Q101-optional designs requiring precise clamping predictability in automotive and industrial edge nodes.
Availability
SM15T24CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power rail protection, and consumer appliance motor control requiring stable component supply and consistent surge immunity performance.
Supply support for SM15T24CA-E3/57T 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 performance.
The SM15T Series is designed for high-energy transient suppression in 24 V industrial, automotive, and telecom systems where compact SMC packaging, 1500 W surge capability, and bidirectional symmetry are essential.
FAQ
What is the clamping voltage of SM15T24CA-E3/57T at its rated peak pulse current?
The SM15T24CA-E3/57T has a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current of 45 A under the standardized 10/1000 μs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal, ensuring realistic thermal boundary conditions for design validation.
Is SM15T24CA-E3/57T suitable for automotive applications?
Yes - while the E3 suffix denotes commercial-grade qualification, the SM15T24CA-E3/57T shares identical electrical and mechanical specifications with AEC-Q101-qualified variants (e.g., SM15T24CAHE3_A/H). Its 1500 W surge rating, -65 °C to +150 °C operating range, and glass-passivated junction make it suitable for under-hood and body-control module deployments when qualified per customer requirements.
How does the bidirectional configuration of SM15T24CA-E3/57T affect PCB layout?
The SM15T24CA-E3/57T has no polarity marking and functions identically in either orientation, simplifying PCB layout by eliminating orientation checks during automated placement. Unlike unidirectional TVS diodes, it requires no cathode alignment - enabling symmetrical routing on differential lines or shared protection across dual-rail systems without directional constraints.
What is the thermal resistance of SM15T24CA-E3/57T in typical mounting conditions?
The SM15T24CA-E3/57T exhibits a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Its junction-to-lead resistance (RθJL) is 15 °C/W, supporting efficient heat transfer to PCB copper planes in thermally constrained industrial modules.
Does SM15T24CA-E3/57T meet RoHS and halogen-free requirements?
The SM15T24CA-E3/57T carries the E3 suffix, indicating full RoHS compliance per EU Directive 2011/65/EU and exemption 7a. It is not halogen-free; for halogen-free and RoHS-compliant versions, specify the M3 suffix (e.g., SM15T24CA-M3/57T), which meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards.
SM15T24CA-E3/57T 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45A
- 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)
SM15T24CA-E3/57T FAQ
1.How can I place an order for SM15T24CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T24CA-E3/57T 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 SM15T24CA-E3/57T reliable?
The price and inventory of SM15T24CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T24CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SM15T24CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T24CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T24CA-E3/57T?
SM15T24CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T24CA-E3/57T 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 SM15T24CA-E3/57T?
For technical support, including SM15T24CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T24CA-E3/57T requirements.
6.How does Aetrix verify that SM15T24CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T24CA-E3/57T 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 SM15T24CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SM15T24CA-E3/57T?
All SM15T24CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T24CA-E3/57T, 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 SM15T24CA-E3/57T part is unused and in its original packaging.
Return procedure for SM15T24CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T24CA-E3/57T Tags
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