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Vishay General Semiconductor - Diodes Division 1.5SMC39AHE3/57T
- Part No.:
- 1.5SMC39AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC39AHE3/57T.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,436
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Product details
Overview
1.5SMC39AHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 33.3 V stand-off voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, 53.9 V maximum clamping voltage (VC) at 27.8 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC39AHE3/57T datasheet, 1.5SMC39AHE3/57T pinout, 1.5SMC39AHE3/57T application, or 1.5SMC39AHE3/57T equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), polarity marking (cathode band), and RoHS-compliant matte tin plating per J-STD-002 - all critical for ESD/surge design validation and automotive-grade BOM selection.
Technical Context
The 1.5SMC39AHE3/57T operates as a unidirectional avalanche-clamping device with glass-passivated junction, enabling sub-nanosecond response to transients. Its 1500 W peak pulse power handling is rated under JEDEC-standard 10/1000 μs waveform at 0.01% duty cycle, with derating above TA = 25 °C per Fig. 2 of the datasheet.
Thermal performance is defined by RθJA = 75 °C/W (typ.) and RθJL = 15 °C/W (typ.), measured on 0.31" × 0.31" copper pads. The device is AEC-Q101 qualified (HE3 suffix), RoHS-compliant, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33.3 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold |
| VBR (Breakdown) | 37.1–41.0 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering during overvoltage events |
| VC (Clamping) | 53.9 V at 27.8 A - Peak voltage seen by protected circuit during 10/1000 μs surge; defines worst-case stress on downstream ICs |
| PPPM | 1500 W - Surge energy absorption capacity under standard waveform; enables protection against lightning-induced transients |
| IPPM | 27.8 A - Peak pulse current supported at VC; determines minimum trace width and PCB layout robustness |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient; informs heatsinking requirements on standard FR-4 with recommended pad layout |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode identified by black band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts during positive transients to clamp voltage to VC |
| Anode (unmarked end) | Reference/ground terminal | Typically tied to system ground or lower-potential rail; completes clamping path during surge events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 μA at VWM) across temperature and lifetime |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without external series impedance |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns; peak temp up to 260 °C |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in 12 V/24 V vehicle systems. IC Role / Device Role: Unidirectional TVS placed between signal line and chassis ground to shunt transient energy before it reaches the transceiver IC. Use Value: Clamps 10/1000 μs surges to ≤53.9 V, keeping protected ICs within absolute maximum ratings while maintaining AEC-Q101 compliance. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation. IC Role / Device Role: Standoff-rated TVS on 24 V DC input lines to absorb repetitive 1500 W pulses without degradation. Use Value: Enables >100,000 surge cycles per MIL-STD-883H Method 3015.7 due to low thermal resistance (RθJL = 15 °C/W) and robust junction construction. |
| Telecom Power Rail Protection | Consumer Power Adapter Output Protection |
Use Scenario: Secondary-side surge suppression on 48 V PoE-powered equipment (e.g., IP cameras, wireless access points) subject to lightning-induced common-mode transients. IC Role / Device Role: Unidirectional clamping device between VOUT and GND on DC-DC converter output stage. Use Value: Maintains 33.3 V stand-off while clamping to 53.9 V, preserving regulation integrity and preventing latch-up in downstream PMICs. |
Use Scenario: Overvoltage protection on 5 V/12 V USB-C PD adapter outputs against fault conditions like feedback loop failure or Zener regulator drift. IC Role / Device Role: Final-stage TVS placed after DC-DC controller to limit output excursion during short-circuit or open-loop events. Use Value: Fast response time and low VC/VBR ratio (1.45×) ensure protected loads (e.g., USB peripherals) remain undamaged during sustained overvoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 | Lower PPPM (600 W), smaller SMB package (DO-214AA), VC = 58.1 V at 10.3 A | Not AEC-Q101 qualified; suitable for commercial-grade consumer power supplies but not automotive under-hood use | Select when space-constrained layouts require smaller footprint and surge energy demand is ≤600 W |
| 1.5KE39A-E3/54 | Through-hole TO-204AE (DO-41) package, same VBR/VC, PPPM = 1500 W, no AEC-Q101 qualification | Lacks MSL Level 1 rating and automated placement compatibility; limited to legacy through-hole assembly | Choose only for repair/refurbishment of existing through-hole designs where SMT conversion is impractical |
Compared with SMBJ36A-E3/52 and 1.5KE39A-E3/54, the 1.5SMC39AHE3/57T uniquely combines AEC-Q101 qualification, SMC surface-mount compatibility, and full 1500 W surge capability - making it the only option among the three validated for new automotive electronics requiring zero rework risk and high-volume SMT production.
Availability
1.5SMC39AHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power systems, and consumer power adapter protection requiring stable component supply and long-term lifecycle assurance.
Supply support for 1.5SMC39AHE3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The 1.5SMC Series was developed specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and 1500 W surge handling are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC39AHE3/57T at its rated peak pulse current?
The 1.5SMC39AHE3/57T has a maximum clamping voltage (VC) of 53.9 V at 27.8 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 and Table 1 of Vishay Document 88303 and defines the upper voltage limit imposed on protected circuits during surge events.
Is the 1.5SMC39AHE3/57T qualified for automotive applications?
Yes, the 1.5SMC39AHE3/57T is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and explicitly stated in the Vishay 1.5SMC Series datasheet (Rev. 09-Mar-2026, p.1). This qualification covers stress tests including temperature cycling, humidity bias, and high-temperature operating life - validating its use in engine control units and ADAS sensor modules.
What does the "57T" suffix indicate in 1.5SMC39AHE3/57T?
The "57T" suffix denotes the packaging configuration: 7-inch diameter plastic tape-and-reel with 850 units per reel. This format is optimized for high-speed SMT placement equipment and aligns with IPC-7351 standards for automated assembly. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification.
How does the thermal resistance of the 1.5SMC39AHE3/57T affect PCB layout?
The 1.5SMC39AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" copper pads per datasheet Fig. 2. To maintain TJ ≤ 150 °C under worst-case 1500 W surge, designers must ensure adequate copper area and avoid thermal bottlenecks - especially in automotive under-hood applications where ambient temperatures exceed 85 °C.
What is the reverse leakage current of the 1.5SMC39AHE3/57T at its stand-off voltage?
At its maximum stand-off voltage (VWM) of 33.3 V and TA = 25 °C, the 1.5SMC39AHE3/57T exhibits a maximum reverse leakage current (ID) of 1.0 μA, as specified in Table 1 of the Vishay datasheet. This low leakage ensures minimal power loss and signal integrity impact in always-on sensor and communication circuits.
1.5SMC39AHE3/57T 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 27.8A
- 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)
1.5SMC39AHE3/57T FAQ
1.How can I place an order for 1.5SMC39AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC39AHE3/57T 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 1.5SMC39AHE3/57T reliable?
The price and inventory of 1.5SMC39AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC39AHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC39AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC39AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC39AHE3/57T?
1.5SMC39AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC39AHE3/57T 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 1.5SMC39AHE3/57T?
For technical support, including 1.5SMC39AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC39AHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC39AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC39AHE3/57T 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 1.5SMC39AHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC39AHE3/57T?
All 1.5SMC39AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC39AHE3/57T, 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 1.5SMC39AHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC39AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC39AHE3/57T Tags
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