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Vishay General Semiconductor - Diodes Division 1.5SMC43AHE3/57T
- Part No.:
- 1.5SMC43AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC43AHE3/57T.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,361
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Product details
Overview
1.5SMC43AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 43 V breakdown voltage (VBR = 40.9–45.2 V at 1 mA), 36.8 V stand-off voltage (VWM), clamps transients to ≤59.3 V at 25.3 A peak pulse current (10/1000 µs), and delivers 1500 W peak pulse power - ideal for safeguarding automotive sensor signal lines against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5SMC43AHE3/57T datasheet, 1.5SMC43AHE3/57T pinout, 1.5SMC43AHE3/57T application, or 1.5SMC43AHE3/57T equivalent, key selection criteria include its AEC-Q101 qualification, unidirectional polarity with cathode band marking, low incremental surge resistance, fast response time, and compatibility with automated SMT assembly on standard PCB pad layouts per JEDEC DO-214AB footprint.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds VBR, limiting transient energy to protected downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Rated for 1500 W peak pulse power (10/1000 µs waveform, 0.01% duty cycle), it sustains 200 A non-repetitive forward surge current (8.3 ms half-sine) and operates across –65 °C to +150 °C junction temperature range. Thermal resistance is 75 °C/W (junction-to-ambient) on recommended 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines precise avalanche onset threshold for predictable clamping behavior |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | ≤59.3 V at 25.3 A - clamping voltage during full-rated 1500 W transient, determining protected IC's voltage stress |
| IPPM | 25.3 A (10/1000 µs) - peak surge current capability defining robustness against common lightning/inductive spikes |
| PPPM | 1500 W - peak pulse power rating enabling protection of high-energy interfaces without derating at room temperature |
| TJ max | +150 °C - maximum junction temperature supporting operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
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; meets UL 94 V-0 flammability rating and MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables single-device protection of 12 V/24 V automotive data lines against ISO 7637-2 Pulse 1/2a/5a-level transients |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics use with extended temperature cycling, humidity, and surge life testing |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) over lifetime and temperature |
| Low profile SMC package | Supports high-density PCB layouts and automated pick-and-place with industry-standard DO-214AB footprint |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN, LIN, or analog sensor signal lines (e.g., pressure, temperature) in engine control units from load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground to shunt transients before reaching MCU input pins. Use Value: Clamps 1500 W surges to ≤59.3 V, preventing damage to 3.3 V/5 V sensor interface ICs while maintaining signal integrity below VWM = 36.8 V. |
Use Scenario: Safeguarding digital input/output terminals of programmable logic controllers exposed to relay coil flyback and ESD in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-mode TVS mounted at connector entry point to divert inductive kickback away from isolation barriers and microcontroller GPIOs. Use Value: Withstands 200 A 8.3 ms surge and maintains <1 µA leakage at 36.8 V, ensuring no false triggering or power loss in 24 V DC control circuits. |
| Telecom Power Interface | Consumer USB Port Protection |
|
Use Scenario: Secondary-side surge suppression on 48 V PoE-powered equipment front-end, downstream of primary TVS and upstream of DC-DC converter. IC Role / Device Role / Timing Role: Fast-response clamping diode absorbing residual transients that bypass upstream protection stages. Use Value: Low clamping voltage (59.3 V) prevents overvoltage stress on 50 V-rated input capacitors and enables compact secondary-stage design. |
Use Scenario: Overvoltage protection for USB 2.0 data lines and VBUS in portable docking stations subjected to accidental 12 V adapter misconnection. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line referenced to ground, triggered only during overvoltage events above 36.8 V. Use Value: 1500 W rating handles sustained overvoltage without thermal runaway; RoHS-compliant HE3 suffix ensures compliance with consumer product regulations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A-E3/52 | Same VBR (40.9–45.2 V), lower PPPM = 600 W, SMB (DO-214AA) package (smaller footprint, higher RθJA = 90 °C/W) | Limited to lower-energy transients; suitable for space-constrained consumer electronics but not automotive load-dump | Select when board area is critical and surge energy is ≤600 W; verify thermal margin on smaller pads |
| 1.5KE43A-T | Same electrical specs, axial-leaded DO-15 package, no AEC-Q101 qualification, higher RθJA ≈ 100 °C/W | Not suitable for automated SMT production or automotive under-hood environments due to leaded construction and qualification gap | Choose only for through-hole prototyping or legacy repair where SMT is unavailable |
Compared with SMBJ43A-E3/52 and 1.5KE43A-T, the 1.5SMC43AHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMC package manufacturability - making it the preferred choice for production automotive and industrial SMT designs requiring validated reliability and high-energy clamping.
Availability
1.5SMC43AHE3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O terminals, telecom power interfaces, and consumer USB power delivery systems requiring stable component supply, AEC-Q101 compliance, and high-volume SMT assembly support.
Supply support for 1.5SMC43AHE3/57T 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 performance.
The 1.5SMC Series was developed to deliver high-power, surface-mount transient suppression for automotive, industrial, and telecom applications where AEC-Q101 qualification, low clamping voltage, and automated assembly compatibility are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC43AHE3/57T under full-rated surge conditions?
The 1.5SMC43AHE3/57T clamps to a maximum of 59.3 V when subjected to its rated 25.3 A peak pulse current (10/1000 µs waveform). This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC43AHE3/57T suitable for automotive applications?
Yes, the 1.5SMC43AHE3/57T is AEC-Q101 qualified (denoted by the HE3 suffix), meaning it has passed rigorous automotive reliability tests including temperature cycling, high-temperature reverse bias, and surge endurance. Its –65 °C to +150 °C operating range and 1500 W surge rating make it appropriate for under-hood and body-control module applications.
What does the "HE3" suffix indicate in 1.5SMC43AHE3/57T?
The "HE3" suffix in 1.5SMC43AHE3/57T specifies RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability standards. It distinguishes this automotive-grade variant from commercial-grade E3 or halogen-free HM3 versions, confirming suitability for automotive production.
How is polarity identified on the 1.5SMC43AHE3/57T package?
The 1.5SMC43AHE3/57T is unidirectional and marked with a cathode band at one end of the SMC (DO-214AB) package. During circuit layout, the banded terminal must be connected to the line being protected, while the opposite (anode) terminal connects to ground - reversing polarity prevents proper clamping and may cause device failure.
What is the maximum steady-state power dissipation of the 1.5SMC43AHE3/57T?
The 1.5SMC43AHE3/57T has a maximum steady-state power dissipation (PD) of 6.5 W when mounted on an infinite heatsink at TA = 50 °C. In typical PCB applications with 8.0 mm × 8.0 mm copper pads per terminal, derating is required above 25 °C ambient - consult Figure 2 in the Vishay 88303 datasheet for exact thermal derating curves.
1.5SMC43AHE3/57T 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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 25.3A
- 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)
1.5SMC43AHE3/57T FAQ
1.How can I place an order for 1.5SMC43AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC43AHE3/57T 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 1.5SMC43AHE3/57T reliable?
The price and inventory of 1.5SMC43AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC43AHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC43AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC43AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC43AHE3/57T?
1.5SMC43AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC43AHE3/57T 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 1.5SMC43AHE3/57T?
For technical support, including 1.5SMC43AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC43AHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC43AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC43AHE3/57T 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 1.5SMC43AHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC43AHE3/57T?
All 1.5SMC43AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC43AHE3/57T, 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 1.5SMC43AHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC43AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC43AHE3/57T Tags
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