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Vishay General Semiconductor - Diodes Division 1.5SMC24A-E3/9AT
- Part No.:
- 1.5SMC24A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC24A-E3/9AT.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,573
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Product details
Overview
1.5SMC24A-E3/9AT 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 IT = 1.0 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 capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial power supply rails.
For engineers reviewing the 1.5SMC24A-E3/9AT datasheet, 1.5SMC24A-E3/9AT pinout, 1.5SMC24A-E3/9AT application, or 1.5SMC24A-E3/9AT equivalent, this page delivers verified electrical parameters, SMC (DO-214AB) package details, clamping performance under surge conditions, thermal resistance data, and RoHS-compliant commercial-grade sourcing context.
Technical Context
This unidirectional TVS diode operates as a fast-acting shunt protector: when reverse voltage exceeds VWM = 20.5 V, it transitions from high-impedance blocking to low-impedance clamping within <1 ps, limiting transient energy to safe levels for downstream ICs and MOSFETs. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable breakdown behavior across temperature.
The device is rated for 150 °C maximum junction temperature, exhibits 75 °C/W junction-to-ambient thermal resistance (RθJA), and supports 200 A non-repetitive forward surge current (IFSM). Its SMC (DO-214AB) package enables automated placement while meeting UL 94 V-0 flammability and J-STD-020 MSL Level 1 reflow requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1.0 mA test current - defines precise voltage threshold where avalanche conduction begins reliably |
| VWM | 20.5 V - maximum continuous reverse operating voltage before significant leakage or conduction occurs |
| VC @ IPPM | 33.2 V at 45.2 A (10/1000 µs) - actual clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 1500 W - peak transient power dissipation capability without failure under standardized surge waveform |
| IPPM | 45.2 A - maximum non-repetitive peak pulse current the device can safely divert |
| RθJA | 75 °C/W - thermal resistance from junction to ambient air on standard 8.0 mm × 8.0 mm copper pads |
| Junction Temp | -65 °C to +150 °C - operational and storage range compatible with under-hood automotive and industrial environments |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to system ground or lower-potential node; defines directionality of clamping action |
| Cathode | Reverse voltage input / Clamping output | Connected to protected line (e.g., 24 V rail or sensor signal); conducts avalanche current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables protection against severe transients like ISO 7637-2 Pulse 5a (load dump) in 24 V automotive systems |
| 33.2 V clamping at 45.2 A | Keeps protected 24 V logic or MCU I/O pins below absolute maximum ratings during surge events |
| Low 1.0 µA leakage @ VWM | Minimizes standby power loss and avoids false triggering in battery-powered or low-current sensor circuits |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture-related popcorn failure risk |
| RoHS-compliant E3 suffix | Meets EU Directive 2011/65/EU and JEDEC J-STD-609A Class 2 whisker resistance for long-term reliability |
Applications
| Automotive Body Control Module (BCM) | Industrial 24 V PLC Input Stage |
|---|---|
Use Scenario: Protecting microcontroller GPIO and CAN transceiver power rails from load-dump spikes and alternator ripple in 24 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between 24 V supply and ground, clamping transients faster than system response time. Use Value: Limits voltage excursion to ≤33.2 V during 1500 W surges, preventing latch-up or gate oxide damage in connected semiconductors. |
Use Scenario: Safeguarding digital input optocouplers and level-shifting buffers in programmable logic controller (PLC) field-side 24 V DC inputs exposed to inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field wiring interface, absorbing energy from relay coil flyback and ESD events. Use Value: Maintains signal integrity by suppressing >20 V transients before they reach isolation barriers, reducing false triggers and component wear. |
| Telecom Remote Radio Unit (RRU) Power Feed | Medical Infusion Pump Motor Driver |
Use Scenario: Shielding 24 V DC power feed lines in outdoor telecom base stations from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: First-line transient suppressor at power entry point, coordinated with upstream MOVs and downstream LC filters. Use Value: Responds in sub-nanosecond time to limit let-through energy to <10 mJ, preserving DC-DC converter input stage reliability. |
Use Scenario: Protecting H-bridge MOSFET gates and current-sense amplifiers in battery-operated infusion pumps subject to ESD and motor commutation spikes. IC Role / Device Role / Timing Role: Localized TVS on motor driver VDD rail and sense-line inputs, placed adjacent to sensitive analog components. Use Value: Prevents transient-induced reset or calibration drift by holding rail voltage within ±10% of nominal during 45.2 A pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A-T | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA) | Best suited for space-constrained consumer electronics with lower-energy transients | Select when board area is critical and surge threat level is ≤600 W (e.g., USB-powered devices) |
| 1.5KE24A | Through-hole DO-201 package, identical VBR/VC/PPPM, higher IFSM (250 A) | Preferred for legacy designs, prototyping, or high-reliability military/aerospace where through-hole mounting is mandated | Choose when manual assembly, rework flexibility, or proven field history outweighs SMT automation benefits |
Compared with SMBJ24A-T and 1.5KE24A, the 1.5SMC24A-E3/9AT delivers optimal balance of 1500 W surge handling, SMC package manufacturability, and commercial-grade RoHS compliance - making it ideal for high-volume automotive and industrial SMT production where both robustness and process efficiency matter.
Availability
1.5SMC24A-E3/9AT is available at Aetrix Electronics and suitable for automotive body control modules, industrial 24 V PLC inputs, and telecom remote radio unit power feeds requiring stable component supply, full traceability, and consistent RoHS-compliant delivery.
Supply support for 1.5SMC24A-E3/9AT 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, precision, 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 systems where compact size, repeatable clamping, and AEC-Q101 readiness are essential.
FAQ
What is the clamping voltage of the 1.5SMC24A-E3/9AT under a 10/1000 µs surge?
The 1.5SMC24A-E3/9AT clamps to a maximum of 33.2 V when subjected to its rated 45.2 A peak pulse current with a 10/1000 µs waveform. This value is measured per industry-standard test conditions and reflects the actual voltage imposed on protected circuitry during worst-case transient events - critical for verifying compatibility with downstream IC absolute maximum ratings.
Is the 1.5SMC24A-E3/9AT RoHS-compliant and halogen-free?
Yes, the 1.5SMC24A-E3/9AT carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU. It is not halogen-free; for halogen-free and RoHS-compliant versions, specify the "M3" suffix (e.g., 1.5SMC24A-M3/9AT). Both meet JESD 201 Class 2 whisker resistance requirements.
What does the "9AT" in 1.5SMC24A-E3/9AT signify?
The "9AT" denotes the packaging configuration: 13-inch diameter plastic tape and reel, containing 3500 units per reel. This format supports high-speed pick-and-place assembly and is distinct from the "57T" option (7-inch reel, 850 units), enabling optimized logistics for medium-to-high volume production runs of the 1.5SMC24A-E3/9AT.
Can the 1.5SMC24A-E3/9AT be used in bidirectional applications?
No - the 1.5SMC24A-E3/9AT is strictly unidirectional. For bidirectional transient suppression at the same voltage rating, use the 1.5SMC24CA-E3/9AT variant. The "A" suffix indicates unidirectional construction with cathode band marking; bidirectional types omit polarity marking and use "CA" suffixes.
What is the maximum operating temperature for the 1.5SMC24A-E3/9AT?
The 1.5SMC24A-E3/9AT has a specified operating junction temperature range of -65 °C to +150 °C. Its thermal resistance (RθJA) is 75 °C/W on standard 8.0 mm × 8.0 mm copper pads, meaning power dissipation must be derated above 25 °C ambient to maintain safe junction temperatures - essential for under-hood automotive or enclosed industrial deployments of the 1.5SMC24A-E3/9AT.
1.5SMC24A-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for 1.5SMC24A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC24A-E3/9AT 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-E3/9AT reliable?
The price and inventory of 1.5SMC24A-E3/9AT 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-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC24A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC24A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC24A-E3/9AT?
1.5SMC24A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC24A-E3/9AT 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-E3/9AT?
For technical support, including 1.5SMC24A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC24A-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC24A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC24A-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC24A-E3/9AT?
All 1.5SMC24A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC24A-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC24A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC24A-E3/9AT Tags
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