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Vishay General Semiconductor - Diodes Division 1.5SMC24AHE3/57T
- Part No.:
- 1.5SMC24AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC24AHE3/57T.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,225
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Product details
Overview
1.5SMC24AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 24 V standoff voltage (VWM), 25.2 V maximum breakdown voltage (VBR), 33.2 V clamping voltage at 45.2 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform.
For engineers reviewing the 1.5SMC24AHE3/57T datasheet, 1.5SMC24AHE3/57T pinout, 1.5SMC24AHE3/57T application, or 1.5SMC24AHE3/57T equivalent, this device serves as a high-reliability, AEC-Q101-qualified transient suppressor for automotive power supply inputs, industrial sensor interfaces, and telecom line protection where fast response (<1 ns), low clamping ratio, and stable thermal performance up to +150 °C junction temperature are required.
Technical Context
The 1.5SMC24AHE3/57T operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (22.8–25.2 V at 1 mA). Its glass-passivated junction ensures stable leakage (<1 µA at 20.5 V) and long-term reliability under repetitive surge stress.
It delivers 1500 W peak pulse power per JEDEC-standard 10/1000 µs waveform with derating above 25 °C ambient, supported by a thermal resistance of 75 °C/W (junction-to-ambient) on standard 8 mm × 8 mm copper pads. The device is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) and meets MSL Level 1 reflow compatibility (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse operating voltage before significant conduction begins; defines safe DC operating margin. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 33.2 V at 45.2 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 1500 W - Surge energy handling capacity under standardized waveform; enables protection against lightning-induced surges. |
| ID (Reverse Leakage) | <1 µA at 20.5 V - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial environments. |
| RθJA | 75 °C/W - Thermal resistance defining temperature rise per watt dissipated; guides PCB copper pad design for thermal management. |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side (e.g., GND or return path); defines polarity-sensitive placement in unidirectional configuration. |
| Cathode | Avalanche conduction terminal / Surge current sink | Connected to protected line (e.g., 24 V rail); carries full surge current to ground during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance per stress test requirements. |
| 1500 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV) surges on 24 V systems without external series impedance. |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes overvoltage overshoot during fast transients, reducing risk of damage to downstream MOSFETs or controllers. |
| MSL Level 1 moisture sensitivity | Allows direct placement into standard lead-free reflow profiles (peak 260 °C) without baking or special handling. |
| Glass-passivated junction | Provides stable electrical parameters over time and temperature, with reduced parameter drift vs. epoxy-passivated alternatives. |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 24 V supply input of BCM against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND, clamping transients within 1 ns to limit voltage to ≤33.2 V. Use Value: Prevents latch-up or destruction of upstream DC/DC converters and microcontrollers during 120 V/50 ms load dump events. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers against field-wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Standoff-rated TVS shunting surge energy to ground before it reaches optocoupler or Schmitt trigger input stages. Use Value: Maintains signal integrity and prevents false triggering or input stage failure in harsh factory-floor environments. |
| Telecom Remote Radio Unit (RRU) DC Feed Line | Medical Infusion Pump Motor Driver Supply |
Use Scenario: Protecting -48 V DC power feed lines in outdoor base station RRUs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS configured with cathode to -48 V rail, anode to ground, clamping negative-going transients. Use Value: Ensures uninterrupted operation of RF amplifiers and control ICs during 10/1000 µs surges up to 1500 W without system reset. |
Use Scenario: Shielding 24 V motor driver supply in battery-powered infusion pumps from switching noise and cable coupling transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on H-bridge supply rail, coordinated with ceramic bypass capacitors for sub-100 ns response. Use Value: Guarantees fail-safe operation and compliance with IEC 60601-1-2 immunity requirements for medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A-E3/52 | Lower peak power (600 W), same VWM/VBR/VC, SMB package (smaller footprint, higher RθJA = 90 °C/W). | Best suited for space-constrained consumer electronics with lower-energy transients; not recommended for automotive load dump. | Select when board area is critical and surge energy is ≤600 W; verify thermal margin with smaller pad layout. |
| 1.5KE24A-T | Through-hole DO-201 package, identical electrical specs, but no AEC-Q101 qualification and higher RθJA (60 °C/W on larger pads). | Used in legacy industrial power supplies where reworkability and manual assembly are prioritized over automated SMT production. | Choose for prototyping or low-volume through-hole designs; avoid in new automotive or high-reliability SMT production. |
Compared with SMBJ24A-E3/52 and 1.5KE24A-T, the 1.5SMC24AHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge rating, and SMC package compatibility with high-volume automated assembly-making it the preferred choice for production automotive and industrial applications demanding validated reliability and robust transient immunity.
Availability
1.5SMC24AHE3/57T is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input protection, telecom remote radio units, and medical infusion pump power systems requiring stable component supply across extended product lifecycles.
Supply support for 1.5SMC24AHE3/57T 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments-emphasizing AEC-Q101 qualification, low clamping ratio, and robust surge endurance for mission-critical 12 V/24 V/48 V systems.
FAQ
What is the clamping voltage of the 1.5SMC24AHE3/57T at its rated peak pulse current?
The 1.5SMC24AHE3/57T has a maximum clamping voltage (VC) of 33.2 V at 45.2 A peak pulse current (IPPM), measured under 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. The 1.5SMC24AHE3/57T maintains this clamping performance due to its low incremental surge resistance and stable avalanche characteristics.
Is the 1.5SMC24AHE3/57T qualified for automotive applications?
Yes, the 1.5SMC24AHE3/57T is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Document Number: 88303). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and surge endurance-validating its suitability for under-hood and chassis-mounted automotive electronics. The 1.5SMC24AHE3/57T is explicitly designated for automotive use in the manufacturer's ordering information table.
What is the thermal resistance of the 1.5SMC24AHE3/57T, and how does it affect PCB layout?
The 1.5SMC24AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value directly informs PCB copper pour sizing: reducing pad area increases RθJA and risks exceeding the +150 °C maximum junction temperature during repeated surges. For reliable 1500 W pulse handling, the 1.5SMC24AHE3/57T must be placed on minimum recommended pad layouts per Vishay's mechanical drawings.
How does the 1.5SMC24AHE3/57T differ from bidirectional TVS diodes like 1.5SMC24CA?
The 1.5SMC24AHE3/57T is unidirectional and conducts only in reverse bias above its breakdown voltage, making it ideal for DC rail protection with defined polarity. In contrast, 1.5SMC24CA is bidirectional and symmetric-suitable for AC lines or data buses where voltage polarity reverses. The 1.5SMC24AHE3/57T offers tighter VBR tolerance (22.8–25.2 V) and lower leakage than its bidirectional counterpart, but cannot protect against positive-going transients on grounded lines without additional circuitry.
What is the maximum reverse leakage current of the 1.5SMC24AHE3/57T at its standoff voltage?
The 1.5SMC24AHE3/57T exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated standoff voltage of 20.5 V, measured at 25 °C ambient. This ultra-low leakage preserves power efficiency in always-on systems and avoids false triggering in high-impedance sensing circuits. The 1.5SMC24AHE3/57T maintains leakage below 5 µA up to +125 °C, supporting stable operation across industrial temperature ranges.
1.5SMC24AHE3/57T 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC24AHE3/57T FAQ
1.How can I place an order for 1.5SMC24AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC24AHE3/57T 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 1.5SMC24AHE3/57T reliable?
The price and inventory of 1.5SMC24AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC24AHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC24AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC24AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC24AHE3/57T?
1.5SMC24AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC24AHE3/57T 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 1.5SMC24AHE3/57T?
For technical support, including 1.5SMC24AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC24AHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC24AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC24AHE3/57T 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 1.5SMC24AHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC24AHE3/57T?
All 1.5SMC24AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC24AHE3/57T, 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 1.5SMC24AHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC24AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC24AHE3/57T Tags
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