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Vishay General Semiconductor - Diodes Division 1.5SMC24AHE3_A/H
- Part No.:
- 1.5SMC24AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC24AHE3_A/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,584
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Product details
Overview
1.5SMC24AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 24 V breakdown voltage (VBR = 22.8–25.2 V at IT = 1.0 mA), 33.2 V maximum clamping voltage (VC) at 45.2 A peak pulse current, and 1500 W peak pulse power with 10/1000 μs waveform - deployed for overvoltage protection of automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the 1.5SMC24AHE3_A/H datasheet, 1.5SMC24AHE3_A/H pinout, 1.5SMC24AHE3_A/H application, or 1.5SMC24AHE3_A/H equivalent, key selection criteria include clamping performance under 10/1000 μs surge, AEC-Q101 qualification status, unidirectional polarity marking, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast response time (<1 ns) and low incremental surge resistance. Its clamping behavior is defined by a tightly controlled VBR range (22.8–25.2 V) and guaranteed VC ≤ 33.2 V at IPPM = 45.2 A, enabling predictable protection of downstream 24 V rail systems.
Designed for automotive-grade reliability, the 1.5SMC24AHE3_A/H meets AEC-Q101 qualification, supports operating junction temperatures from –65 °C to +150 °C, and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards - all within a low-profile SMC (DO-214AB) package rated MSL Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at IT = 1.0 mA - defines precise avalanche initiation threshold for 24 V system protection |
| VWM | 20.5 V - maximum continuous reverse stand-off voltage; ensures no conduction during normal 24 V operation |
| VC @ IPPM | 33.2 V at 45.2 A - clamping voltage limits transient energy delivered to protected ICs or MOSFETs |
| PPPM | 1500 W (10/1000 μs) - sustains high-energy surges common in automotive load-dump and inductive switching events |
| IPPM | 45.2 A - peak pulse current capacity directly tied to system-level surge immunity requirements (e.g., ISO 7637-2 Pulse 1/2a) |
| TJ max. | +150 °C - enables reliable operation in under-hood automotive environments and industrial enclosures |
| RθJA | 75 °C/W - thermal resistance informs PCB pad layout design (0.31" × 0.31" copper per terminal required for rated power) |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case with UL 94 V-0 flammability rating; cathode indicated by band on body; terminals are matte tin-plated for lead-free reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or low-side return path; not used in reverse-biased TVS operation |
| Cathode | Current exit point during reverse avalanche | Connected to protected line (e.g., CAN_H, LIN, sensor supply); band-marked end must align with PCB silkscreen polarity indicator |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics - eliminates need for additional qualification testing |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power | Withstands repetitive 10/1000 μs transients at 0.01% duty cycle - suitable for harsh industrial and vehicle electrical environments |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients - critical for protecting sensitive 24 V logic interfaces |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loops) and digital sensor signals (e.g., Hall-effect, temperature) in engine bay modules subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach ADC inputs or microcontroller GPIOs. Use Value: Clamps 10/1000 μs surges to ≤33.2 V while maintaining <1 μA leakage at 20.5 V - preserving signal integrity and preventing latch-up in 24 V sensor front-ends. |
Use Scenario: Safeguarding RS-485/RS-422 communication ports and digital input channels on programmable logic controllers exposed to EFT bursts and lightning-induced surges in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp on differential bus lines or single-ended inputs, mounted adjacent to connector to intercept energy before it enters isolation barriers or interface ICs. Use Value: Delivers 1500 W surge handling with 45.2 A peak current capacity - exceeds IEC 61000-4-5 Level 4 (4 kV) requirements when combined with series impedance. |
| DC Power Rail Protection | Motor Drive Feedback Line Protection |
Use Scenario: Guarding 24 V DC power distribution networks in commercial vehicles and off-road equipment against battery reversal, jump-start spikes, and alternator load dump. IC Role / Device Role / Timing Role: Parallel-connected TVS across power rail and ground, sized to absorb >1500 W transient energy without failure. Use Value: Withstands 200 A non-repetitive forward surge (IFSM) and maintains VC ≤33.2 V - prevents damage to DC-DC converters and power management ICs downstream. |
Use Scenario: Shielding encoder quadrature outputs, resolver feedback, or current-sense amplifier inputs in brushless motor drives subjected to commutation noise and inductive kickback. IC Role / Device Role / Timing Role: Localized TVS at motor controller PCB edge, placed before signal conditioning stages to suppress sub-100 ns ringing and EMI coupling. Use Value: Sub-nanosecond response time and low capacitance (<100 pF at 0 V) avoid signal distortion on high-frequency feedback paths up to 1 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHE3_A/H | Lower PPPM (600 W), same VBR/VC, SMB (DO-214AA) package - smaller footprint but reduced surge margin | Suitable for space-constrained consumer or telecom boards where 600 W surge immunity suffices | Select when board area is critical and system-level surge stress is below ISO 7637-2 Pulse 5a severity |
| 1.5KE24A-E3/54 | Through-hole DO-201 package, identical VBR/VC/PPPM, but higher RθJA (~100 °C/W) and no AEC-Q101 qualification | Used in legacy industrial power supplies or repair scenarios requiring through-hole replacement | Choose only for manual assembly or retrofits where AEC-Q101 compliance and SMT compatibility are not required |
Compared with SMBJ24AHE3_A/H and 1.5KE24A-E3/54, the 1.5SMC24AHE3_A/H uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC package thermal performance - making it the preferred choice for new automotive and high-reliability industrial designs requiring validated robustness and automated manufacturing support.
Availability
1.5SMC24AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, 24 V DC power distribution systems, and motor drive feedback protection requiring stable component supply and full traceability.
Supply support for 1.5SMC24AHE3_A/H 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 1.5SMC Series was developed to deliver high-power, AEC-Q101-qualified transient suppression in compact SMC packages - targeting automotive, industrial, and communications systems where robust overvoltage protection is mission-critical.
FAQ
What is the clamping voltage of the 1.5SMC24AHE3_A/H under maximum surge conditions?
The 1.5SMC24AHE3_A/H has a maximum clamping voltage (VC) of 33.2 V at 45.2 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is guaranteed across temperature and lifetime per Vishay's 88303 specification sheet and reflects worst-case performance under standardized surge testing - critical for ensuring protected circuits remain below absolute maximum ratings during transients.
Is the 1.5SMC24AHE3_A/H qualified for automotive use?
Yes, the 1.5SMC24AHE3_A/H is AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's 88303 datasheet. It is specifically intended for automotive applications including engine control units, body electronics, and ADAS sensor modules - meeting stress test requirements for temperature cycling, humidity, and mechanical shock without derating.
How does the 1.5SMC24AHE3_A/H differ from the standard 1.5SMC24A variant?
The 1.5SMC24AHE3_A/H differs from the base 1.5SMC24A by incorporating AEC-Q101 qualification, RoHS compliance, and packaging in 7" tape-and-reel (H code). The "HE3" suffix denotes automotive-grade construction, while the "_A/H" ordering code specifies reel size and packaging format - all verified in Vishay's official ordering information table on page 3 of document 88303.
What is the recommended PCB pad layout for optimal thermal performance of the 1.5SMC24AHE3_A/H?
Vishay specifies mounting the 1.5SMC24AHE3_A/H on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W pulse power and thermal resistance (RθJA = 75 °C/W). Smaller pads increase junction temperature and reduce surge endurance - this layout is mandatory for compliance with the device's maximum ratings per Figure 2 and Table "Thermal Characteristics" in document 88303.
Does the 1.5SMC24AHE3_A/H have polarity marking, and how is it oriented on the PCB?
Yes, the 1.5SMC24AHE3_A/H is unidirectional and features a cathode band on the body - the banded end must be connected to the line being protected (e.g., 24 V signal or power rail), while the anode connects to ground. This polarity is essential for correct operation; reverse orientation renders the device ineffective against positive transients and may cause catastrophic failure under surge conditions.
1.5SMC24AHE3_A/H 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:
- -
- 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_A/H FAQ
1.How can I place an order for 1.5SMC24AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC24AHE3_A/H 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_A/H reliable?
The price and inventory of 1.5SMC24AHE3_A/H 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_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC24AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC24AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC24AHE3_A/H?
1.5SMC24AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC24AHE3_A/H 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_A/H?
For technical support, including 1.5SMC24AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC24AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC24AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC24AHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC24AHE3_A/H?
All 1.5SMC24AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC24AHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC24AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC24AHE3_A/H Tags
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