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Vishay General Semiconductor - Diodes Division 1.5SMC24A-E3/57T
- Part No.:
- 1.5SMC24A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC24A-E3/57T.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:180
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Product details
Overview
1.5SMC24A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 24 V breakdown voltage (VBR = 22.8–25.2 V at 1.0 mA), 20.5 V stand-off voltage (VWM), clamps transients to ≤33.2 V at 45.2 A peak pulse current, and delivers 1500 W peak pulse power with a 10/1000 μs waveform - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC24A-E3/57T datasheet, 1.5SMC24A-E3/57T pinout, 1.5SMC24A-E3/57T application, or 1.5SMC24A-E3/57T equivalent, this page provides verified electrical parameters, SMC (DO-214AB) package details, clamping performance under surge conditions, and direct alternatives for ESD/lightning transient suppression in commercial and AEC-Q101–capable designs.
Technical Context
The 1.5SMC24A-E3/57T operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (22.8–25.2 V). Its glass-passivated junction ensures stable leakage (<1.0 μA at 20.5 V) and fast response (<1.0 ns), enabling effective suppression of inductive switching spikes and lightning-induced surges on DC rails and low-speed signal paths.
Thermally rated for TJ = –65 °C to +150 °C, it uses an SMC (DO-214AB) package with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. With RθJA = 75 °C/W and RθJL = 15 °C/W, it supports reliable operation under repetitive 0.01% duty-cycle pulses when mounted on 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1.0 mA - defines precise avalanche initiation window for predictable clamping onset |
| VWM | 20.5 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | ≤33.2 V at 45.2 A - clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 1500 W - peak transient power handling capability under standardized surge waveform |
| IPPM | 45.2 A - maximum non-repetitive peak pulse current the device safely conducts |
| TJ max. | +150 °C - maximum junction temperature enabling use in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" x 0.246" footprint and cathode band marking |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case meeting UL 94 V-0 flammability rating; terminals are matte tin-plated, solderable per J-STD-002; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Avalanche conduction terminal | Connected to protected line (e.g., 24 V rail); band-marked end conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Withstands high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure when properly mounted |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage |
| Fast response time <1 ns | Engages before sensitive circuitry experiences damaging voltage rise, critical for MOSFET gate protection |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free PCB assembly without preconditioning or special handling |
| RoHS-compliant, commercial grade (E3 suffix) | Meets environmental compliance requirements for global electronics manufacturing and export |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive kickback in 24 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach the transceiver's input pins. Use Value: Limits voltage to ≤33.2 V during 45.2 A surges, preserving signal integrity and preventing permanent damage to automotive-grade ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring faults and electrostatic discharge in factory automation. IC Role / Device Role / Timing Role: Mounted at connector entry point to shunt surge energy away from optocoupler inputs and microcontroller GPIOs. Use Value: Enables reliable operation under IEC 61000-4-5 Level 3 (1 kV/2 kA) surge testing due to low dynamic impedance and repeatable clamping. |
| DC Power Rail Protection | Consumer Appliance Motor Control |
|
Use Scenario: Guarding 24 V DC power distribution networks in telecom equipment and network switches against accidental short-circuits and hot-swap transients. IC Role / Device Role / Timing Role: Placed in parallel with bulk capacitance on main supply rail to absorb energy from inductive back-EMF during relay switching. Use Value: Absorbs up to 1500 W peak power without degradation, maintaining system uptime and eliminating need for redundant fusing. |
Use Scenario: Shielding motor driver ICs (e.g., half-bridge gate drivers) from flyback voltage spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Connected between motor supply rail and ground to clamp commutation spikes before reaching driver's VDD pin. Use Value: Prevents overvoltage shutdown and gate oxide stress with sub-1 ns response, extending driver lifetime in high-cycle applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower peak power (600 W), same VBR range (22.8–25.2 V), SMB package (smaller footprint, higher thermal resistance) | Best suited for space-constrained consumer electronics where surge energy is limited to <600 W | Select SMBJ24A only if board layout cannot accommodate SMC size and worst-case surge is ≤600 W |
| 1.5KE24A | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly; higher RθJA (100 °C/W) | Used in legacy industrial controls or repair scenarios requiring through-hole replacement | Choose 1.5KE24A only for manual assembly or backward compatibility in existing through-hole designs |
Compared with SMBJ24A and 1.5KE24A, the 1.5SMC24A-E3/57T offers optimal balance of high-power handling (1500 W), SMT manufacturability, and thermal performance (RθJA = 75 °C/W), making it preferred for new automotive and industrial designs requiring automated placement and robust surge immunity.
Availability
1.5SMC24A-E3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and 24 V DC power rail safeguarding requiring stable component supply across production lifecycles.
Supply support for 1.5SMC24A-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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping, AEC-Q101 readiness, and surface-mount scalability are essential.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC24A-E3/57T?
The 1.5SMC24A-E3/57T has a specified breakdown voltage (VBR) range of 22.8 V to 25.2 V at 1.0 mA test current, representing ±5% tolerance around the nominal 24 V rating. This tight tolerance ensures predictable clamping behavior across production lots and temperature ranges, critical for protecting 24 V systems without premature conduction.
Is the 1.5SMC24A-E3/57T RoHS-compliant and halogen-free?
Yes, the 1.5SMC24A-E3/57T carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU. It is not halogen-free; for halogen-free versions, Vishay offers the "M3" variant (e.g., 1.5SMC24A-M3/57T), which meets both RoHS and JEDEC JS709B halogen-free requirements.
Can the 1.5SMC24A-E3/57T be used in bidirectional configurations?
No - the 1.5SMC24A-E3/57T is strictly unidirectional. Bidirectional variants use the "CA" suffix (e.g., 1.5SMC24CA). Using the 1.5SMC24A-E3/57T in bidirectional circuits would result in forward conduction during negative transients, potentially causing failure. Always match suffix to application polarity requirement.
What is the maximum clamping voltage of the 1.5SMC24A-E3/57T under surge conditions?
The 1.5SMC24A-E3/57T clamps to a maximum of 33.2 V at its rated peak pulse current of 45.2 A (10/1000 μs waveform). This value is guaranteed per Vishay's datasheet and reflects worst-case dynamic impedance under standardized surge testing - essential for verifying margin against downstream IC absolute maximum ratings.
Does the 1.5SMC24A-E3/57T meet AEC-Q101 qualification?
No - the 1.5SMC24A-E3/57T is commercial-grade (E3 suffix). For AEC-Q101 qualified versions, specify the "HE3" suffix (e.g., 1.5SMC24AHE3_A/H), which undergoes additional stress testing for automotive use. The 1.5SMC24A-E3/57T remains suitable for industrial and consumer applications where automotive qualification is not mandated.
1.5SMC24A-E3/57T 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45.2A
- 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)
1.5SMC24A-E3/57T FAQ
1.How can I place an order for 1.5SMC24A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC24A-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 1.5SMC24A-E3/57T reliable?
The price and inventory of 1.5SMC24A-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 1.5SMC24A-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC24A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC24A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC24A-E3/57T?
1.5SMC24A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC24A-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 1.5SMC24A-E3/57T?
For technical support, including 1.5SMC24A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC24A-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC24A-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC24A-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 1.5SMC24A-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC24A-E3/57T?
All 1.5SMC24A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC24A-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 1.5SMC24A-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC24A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC24A-E3/57T Tags
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