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Vishay General Semiconductor - Diodes Division TPSMC39AHE3/57T
- Part No.:
- TPSMC39AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC39AHE3/57T.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,087
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Product details
Overview
TPSMC39AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-reliability overvoltage protection of sensitive electronics. It features a 39 V nominal breakdown voltage (VBR = 37.1–41.0 V), 33.3 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 μs), and 185 °C maximum junction temperature - enabling robust clamping in automotive and industrial power rail and signal line protection.
For engineers reviewing the TPSMC39AHE3/57T datasheet, TPSMC39AHE3/57T pinout, TPSMC39AHE3/57T application, or TPSMC39AHE3/57T equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal derating behavior, clamping performance at 27.8 A, and real-world use context for ESD/surge protection in automotive ECUs, sensor interfaces, and industrial I/O modules.
Technical Context
This TVS diode operates as a unidirectional clamping device with an anisotropic rectifier structure optimized for low incremental surge resistance and fast response (<1 ns). Its junction passivation enables stable operation up to TJ = 185 °C, meeting AEC-Q101 stress test requirements including high-temperature reverse bias and temperature cycling.
The device uses a 10/1000 μs waveform-defined surge rating (1500 W PPPM), with clamping voltage VC = 53.9 V at IPPM = 27.8 A. Its VBR temperature coefficient αT = 0.091 %/°C allows accurate breakdown voltage prediction across operating temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - defines minimum voltage at which device enters avalanche conduction under 1 mA test current |
| VWM | 33.3 V - maximum continuous reverse working voltage before leakage exceeds 1 μA at 25 °C |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 μs waveform on specified copper pad layout |
| VC @ IPPM | 53.9 V at 27.8 A - clamping voltage limiting downstream circuit stress during surge events |
| TJ max. | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| AEC-Q101 qualified | Yes - certified for automotive-grade reliability per stress test requirements including HTGB, HTRB, and TC |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.13 mm × 6.22 mm footprint and matte tin-plated leads |
Pinout & Package
TPSMC39AHE3/57T is housed in the SMC (DO-214AB) package: a rectangular surface-mount case with cathode band marking, 0.320" × 0.246" (8.13 mm × 6.22 mm) body size, and terminals compatible with J-STD-002 soldering standards. The device has two terminals only: anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivated anisotropic rectifier technology | Enables stable 185 °C operation and low leakage drift over lifetime in harsh thermal environments |
| 1500 W peak pulse power (10/1000 μs) | Provides robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surge transients |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage |
| AEC-Q101 qualified (HE3 suffix) | Validates suitability for automotive powertrain, body control, and ADAS subsystems without additional qualification |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-supplied microcontrollers and CAN transceivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between VBAT and GND, absorbing energy from 100 V/400 ms load dump pulses. Use Value: Withstands 1500 W surges and maintains VC ≤ 53.9 V, ensuring downstream 3.3 V/5 V logic remains within safe operating area. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted at connector entry point, shunting >8 kV HBM ESD strikes to ground. Use Value: Sub-1 ns response time and 1 μA leakage at 33.3 V enable precision signal integrity without DC error or offset drift. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Protection |
|
Use Scenario: Safeguarding Ethernet PHY power pins and PoE interface circuitry against lightning-induced surges on outdoor telecom equipment. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V PoE input rail, coordinated with secondary GDT or MOV for staged clamping. Use Value: 185 °C TJ rating supports operation inside sealed outdoor enclosures where ambient temperatures exceed 85 °C. |
Use Scenario: Adding secondary-side overvoltage suppression on AC-DC adapter DC outputs (e.g., 12 V, 19 V) before USB-C PD controllers. IC Role / Device Role / Timing Role: Standoff-rated clamp preventing accidental 24 V misconnection or regulator fault from damaging downstream USB-PD ICs. Use Value: Precise 33.3 V VWM ensures no conduction during normal operation while triggering reliably at ≥37.1 V faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A (Bourns) | Lower PPPM (600 W), smaller SMB package (DO-214AA), VBR = 40–44.2 V, VC = 58.1 V @ 10.3 A | Limited to lower-energy transients; not rated for 1500 W or AEC-Q101 | Select when board space is constrained and surge threat level is ≤ IEC 61000-4-5 Level 3 (1 kV/0.5 kA) |
| 1.5KE39A (ON Semiconductor) | Through-hole DO-201 package, same VBR/VC specs but higher VF (3.5 V), no AEC-Q101 qualification | Requires wave soldering; unsuitable for automated SMT lines or automotive vibration environments | Choose only for legacy through-hole designs or cost-sensitive non-automotive applications where reflow compatibility is irrelevant |
Compared with SMBJ36A and 1.5KE39A, TPSMC39AHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge capacity in SMC form factor, and 185 °C operation - making it the only option among the three validated for under-hood automotive use with zero derating up to +125 °C ambient.
Availability
TPSMC39AHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning circuits, and telecom line card surge protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for TPSMC39AHE3/57T 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 high-reliability, high-temperature, and automotive-grade performance.
The TPSMC39AHE3/57T belongs to Vishay's PAR® series of transient voltage suppressors, engineered specifically for demanding overvoltage protection in automotive, industrial, and telecom infrastructure where thermal stability and surge immunity are critical.
FAQ
What is the maximum clamping voltage of the TPSMC39AHE3/57T at its rated peak pulse current?
The TPSMC39AHE3/57T exhibits a maximum clamping voltage (VC) of 53.9 V when subjected to its rated peak pulse current (IPPM) of 27.8 A under the standard 10/1000 μs waveform. This value is measured at TA = 25 °C on specified 8.0 mm × 8.0 mm copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The TPSMC39AHE3/57T maintains this clamping performance across its full operational temperature range due to its low temperature coefficient of VBR.
Is the TPSMC39AHE3/57T qualified for automotive applications?
Yes, the TPSMC39AHE3/57T carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. It has passed all required stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling. Its 185 °C maximum junction temperature rating and MSL Level 1 reflow compatibility further validate its suitability for automotive powertrain, body electronics, and ADAS systems. The TPSMC39AHE3/57T is explicitly designated for automotive use in Vishay's ordering nomenclature.
What does the "HE3" and "57T" suffix mean in TPSMC39AHE3/57T?
The "HE3" suffix denotes RoHS-compliant construction and AEC-Q101 qualification, while "57T" indicates tape-and-reel packaging in a 13-inch diameter reel with a base quantity of 3500 units. This packaging format ensures compatibility with high-speed pick-and-place equipment and supports automated SMT assembly. The TPSMC39AHE3/57T is fully traceable, with Vishay's material categorization and whisker testing (JESD 201 Class 2) documented in the official datasheet. All markings and suffixes apply directly to the TPSMC39AHE3/57T unit.
How does the TPSMC39AHE3/57T compare to bidirectional TVS diodes in surge protection design?
The TPSMC39AHE3/57T is unidirectional and intended for DC-biased lines such as power rails or single-polarity signal paths, offering lower leakage and tighter VWM tolerance than equivalent bidirectional devices. Unlike bidirectional TVS diodes, it cannot protect AC signals or floating lines without external biasing. Its 33.3 V VWM and 39 V VBR make it ideal for 36 V nominal systems. For designs requiring AC line protection, a separate bidirectional part would be needed - the TPSMC39AHE3/57T is not interchangeable with them.
What is the thermal derating behavior of the TPSMC39AHE3/57T above 25 °C ambient?
The TPSMC39AHE3/57T follows Vishay's standard derating curve (Fig. 2 in datasheet 88407): peak pulse power decreases linearly from 100 % at 25 °C to approximately 50 % at 125 °C ambient, based on mounting on 8.0 mm × 8.0 mm copper pads. At TA = 100 °C, its PPPM is ~750 W. This derating is critical for automotive under-hood applications. The TPSMC39AHE3/57T retains full functionality up to TJ = 185 °C, but system-level thermal design must ensure junction temperature stays within limits during repeated surge events.
TPSMC39AHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
TPSMC39AHE3/57T FAQ
1.How can I place an order for TPSMC39AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC39AHE3/57T 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 TPSMC39AHE3/57T reliable?
The price and inventory of TPSMC39AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC39AHE3/57T is usually 5 days.
3.What payment methods are accepted for TPSMC39AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC39AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC39AHE3/57T?
TPSMC39AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC39AHE3/57T 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 TPSMC39AHE3/57T?
For technical support, including TPSMC39AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC39AHE3/57T requirements.
6.How does Aetrix verify that TPSMC39AHE3/57T is sourced from the original manufacturer or authorized distributors?
All TPSMC39AHE3/57T 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 TPSMC39AHE3/57T meets industry standards.
7.What is the process for return or replacement of TPSMC39AHE3/57T?
All TPSMC39AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC39AHE3/57T, 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 TPSMC39AHE3/57T part is unused and in its original packaging.
Return procedure for TPSMC39AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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