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Vishay General Semiconductor - Diodes Division 1.5SMC24A-M3/57T
- Part No.:
- 1.5SMC24A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC24A-M3/57T.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,112
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Product details
Overview
1.5SMC24A-M3/57T 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 mA), 20.5 V stand-off voltage (VWM), 33.2 V clamping voltage (VC) at 45.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC24A-M3/57T datasheet, 1.5SMC24A-M3/57T pinout, 1.5SMC24A-M3/57T application, or 1.5SMC24A-M3/57T equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, clamping performance under repetitive surge conditions, and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM (20.5 V), it transitions rapidly from high-impedance to low-impedance state, diverting transient energy away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repeated surges.
Designed for 10/1000 µs waveform compliance, it delivers 45.2 A peak pulse current (IPPM) with 33.2 V clamping, achieving low incremental surge resistance and sub-nanosecond response time. Thermal resistance is rated at RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads), supporting operation from –65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1 mA - defines precise breakdown threshold for reliable triggering |
| VWM | 20.5 V - maximum continuous reverse operating voltage before conduction begins |
| VC @ IPPM | 33.2 V at 45.2 A - clamping voltage limiting stress on protected ICs during surge events |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform, 0.01% duty cycle |
| IPPM | 45.2 A - maximum non-repetitive surge current the device safely clamps without failure |
| TJ max. | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" body length and matte tin-plated leads |
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 and JESD 22-B102; cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return in unidirectional configuration |
| Cathode | Reverse-biased terminal / Clamping node | Connected to protected line; conducts when transient exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables protection against severe transients like ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes voltage overshoot during clamping, reducing risk of damage to 24 V-rated interface ICs |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive OEM supply chains |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns |
| –65 °C to +150 °C operating range | Validates use in extended-temperature applications including engine control modules and motor drives |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between signal line and ground, clamping transients within nanoseconds. Use Value: Limits voltage seen by 24 V-tolerant transceivers to ≤33.2 V during 1500 W surges, preventing latch-up or gate oxide damage. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges and inductive kickback. IC Role / Device Role / Timing Role: Standoff-connected TVS on each input line, absorbing repetitive 10/1000 µs transients up to 0.01% duty cycle. Use Value: Maintains functional integrity of optocoupler input stages by holding clamped voltage below 35 V during 45 A surge events. |
| Telecom Power Supply Rail Protection | Motor Drive Control Signal Protection |
Use Scenario: Secondary-side overvoltage suppression on 24 V telecom power distribution boards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary transient suppressor on DC output rail, coordinated with upstream MOVs and fuses. Use Value: Provides fast-response secondary clamping with 33.2 V ceiling, ensuring downstream DC/DC converters remain within absolute maximum ratings. |
Use Scenario: Shielding isolated gate driver inputs (e.g., for IGBTs/MOSFETs) from coupling noise and switching transients in variable-frequency drives. IC Role / Device Role / Timing Role: Point-of-load TVS on PWM signal lines between controller and isolation barrier. Use Value: Prevents false triggering or latch-up in level-shifted control paths by clamping spikes to ≤33.2 V with <1 ns response. |
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-E3/52 | Lower peak power (600 W), SMB package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics; insufficient for automotive load dump | Select when board area is critical and surge energy is ≤600 W |
| 1.5KE24A-T | Through-hole DO-201 package, same VBR/VC, but lower thermal performance and no MSL-1 rating | Used in legacy industrial power supplies where reflow compatibility is not required | Choose only for through-hole assembly or cost-sensitive non-automotive designs |
Compared with SMBJ24A-E3/52 and 1.5KE24A-T, the 1.5SMC24A-M3/57T offers superior surge robustness (1500 W vs. 600 W/1500 W), SMT compatibility with MSL-1 reflow support, and halogen-free compliance - making it the preferred choice for new automotive and industrial designs requiring AEC-Q101-aligned reliability.
Availability
1.5SMC24A-M3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom power distribution units, and motor drive control boards requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC24A-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 1.5SMC Series was developed for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, consistency, and regulatory compliance (AEC-Q101, RoHS, halogen-free) are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC24A-M3/57T under maximum surge conditions?
The 1.5SMC24A-M3/57T has a maximum clamping voltage (VC) of 33.2 V at its rated peak pulse current of 45.2 A, measured with a 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet (Document Number 88303, Rev. 09-Mar-2026) and reflects worst-case performance under standardized surge testing - critical for verifying margin against downstream IC absolute maximum ratings in the 1.5SMC24A-M3/57T design.
Is the 1.5SMC24A-M3/57T suitable for automotive applications?
Yes, the 1.5SMC24A-M3/57T is qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes; however, the M3 suffix (as in 1.5SMC24A-M3/57T) denotes halogen-free RoHS compliance and commercial-grade qualification. For automotive use, confirm with Vishay whether the specific M3 lot is AEC-Q101 certified - the base 1.5SMC24A-M3/57T part itself meets all electrical and thermal specs required for under-hood protection, but formal qualification depends on ordering code variant.
What does the "M3" suffix mean in 1.5SMC24A-M3/57T?
The "M3" suffix in 1.5SMC24A-M3/57T indicates halogen-free, RoHS-compliant construction with matte tin-plated leads, meeting JESD 201 Class 2 whisker resistance. It distinguishes this version from E3 (RoHS-compliant, non-halogen-free) and HM3 (AEC-Q101 qualified + halogen-free). The "/57T" denotes packaging: 7-inch tape-and-reel, 850 units per reel - confirmed in Vishay's Ordering Information table (Doc. 88303, p.3).
How does the 1.5SMC24A-M3/57T compare to bidirectional TVS diodes like 1.5SMC24CA?
The 1.5SMC24A-M3/57T is unidirectional and features a cathode band for polarity identification, while 1.5SMC24CA is bidirectional with no polarity marking. Electrically, the 1.5SMC24A-M3/57T has VWM = 20.5 V and VBR = 22.8–25.2 V, whereas 1.5SMC24CA specifies symmetric VWM = 20.5 V and VBR = 22.8–25.2 V in both directions. Use 1.5SMC24A-M3/57T for DC-biased lines (e.g., 24 V supply rails); choose 1.5SMC24CA for AC or floating signal lines like RS-485.
What PCB pad layout is recommended for optimal thermal performance of the 1.5SMC24A-M3/57T?
Vishay specifies mounting the 1.5SMC24A-M3/57T on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve the rated RθJA = 75 °C/W and full 1500 W pulse power capability. Smaller pads increase thermal resistance and reduce surge handling - verified in Fig. 2 of the datasheet (Doc. 88303). The recommended SMC (DO-214AB) land pattern is provided on page 5, with cathode band alignment critical for automated placement accuracy in the 1.5SMC24A-M3/57T assembly process.
1.5SMC24A-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:
- 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-M3/57T FAQ
1.How can I place an order for 1.5SMC24A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC24A-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 1.5SMC24A-M3/57T reliable?
The price and inventory of 1.5SMC24A-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 1.5SMC24A-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC24A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC24A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC24A-M3/57T?
1.5SMC24A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC24A-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 1.5SMC24A-M3/57T?
For technical support, including 1.5SMC24A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC24A-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC24A-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC24A-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 1.5SMC24A-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC24A-M3/57T?
All 1.5SMC24A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC24A-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 1.5SMC24A-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC24A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC24A-M3/57T Tags
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