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Vishay General Semiconductor - Diodes Division TPSMC39AHE3_B/H
- Part No.:
- TPSMC39AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC39AHE3_B/H.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,214
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Product details
Overview
TPSMC39AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping fast-rising voltage transients on power and signal lines. It features 39 V breakdown voltage (VBR = 37.1–41.0 V at 1 mA), 33.3 V stand-off voltage (VWM), 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 - deployed in automotive sensor protection and industrial power rail surge suppression.
For engineers reviewing the TPSMC39AHE3_B/H datasheet, TPSMC39AHE3_B/H pinout, TPSMC39AHE3_B/H application, or TPSMC39AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C junction temperature capability, low incremental surge resistance, and RoHS-compliant matte tin-plated terminals solderable per J-STD-002.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under repetitive surge stress and high-temperature operation up to 185 °C. Its junction passivation enables reliable performance in automotive under-hood environments and industrial control systems exposed to load-switching transients.
The device responds within picoseconds to overvoltage events and maintains low dynamic impedance during 10/1000 μs surges, delivering consistent clamping at ≤53.9 V up to 27.8 A. It meets MSL Level 1 per J-STD-020 and supports reflow soldering at peak temperatures up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V at 1 mA - defines precise voltage threshold where avalanche conduction begins reliably |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 53.9 V at 27.8 A - clamping voltage limiting downstream IC/MOSFET stress during 10/1000 μs surge |
| PPPM | 1500 W - peak transient power dissipation capability without failure under standardized waveform |
| TJ max. | +185 °C - enables use in high-ambient automotive and industrial environments without derating |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked by band |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.13 mm × 6.22 mm footprint and thermal pad compatibility |
Pinout & Package
TPSMC39AHE3_B/H is housed in an SMC (DO-214AB) plastic package with two terminals: cathode (marked by color band) and anode. The package conforms to JEDEC DO-214AB mechanical dimensions and supports automated placement and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage event |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan |
| Junction passivation | Reduces surface leakage and improves long-term stability under humidity and bias stress |
| MSL Level 1 | Zero floor-life limitation; supports unlimited exposure to ambient prior to reflow soldering |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surge (4 kV line-earth) when properly mounted on 8 mm × 8 mm copper pads |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage margin between clamping and protected device's absolute maximum rating |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load-dump and inductive switching transients in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and ground to clamp positive spikes before they reach sensitive input pins. Use Value: Enables compliance with ISO 7637-2 Pulse 1/2a/5a and AEC-Q100 stress requirements while maintaining signal integrity below 53.9 V. |
Use Scenario: Safeguarding 24 V DC power inputs of PLC modules and motor drives against switching surges from relay coils and solenoids. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main supply rail, coordinated with upstream fuse and downstream LDO/regulator. Use Value: Limits rail overshoot to ≤53.9 V during 1500 W transients, preventing latch-up or gate oxide damage in downstream MOSFETs and controllers. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Stage |
|
Use Scenario: Shielding Ethernet PHY power pins and auxiliary bias rails in PoE-powered switches and base stations from lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level transient suppressor located after primary gas discharge tube (GDT), handling residual energy. Use Value: Provides sub-100 ns response and low clamping voltage to protect 3.3 V/5 V logic supplies referenced to isolated grounds. |
Use Scenario: Suppressing differential-mode surges on AC-DC adapter primary-side rectified output before bulk capacitor and controller IC. IC Role / Device Role / Timing Role: Fast-acting unidirectional clamp across DC bus to absorb turn-off spikes from bridge rectifier and EMI filter inrush. Use Value: Extends capacitor lifetime and prevents controller reset by limiting bus voltage excursions to ≤53.9 V during 10/1000 μs events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5AT (Vishay) | Lower VBR (34.2–37.8 V), lower PPPM (400 W), SMA package (smaller thermal mass) | Not AEC-Q101 qualified; limited to commercial-temperature industrial use | Select when cost and board space are critical and 400 W surge rating suffices |
| 1.5KE39A (ON Semiconductor) | Through-hole DO-201 package, same VBR range, 1500 W rating, but no AEC-Q101 qualification | Requires wave soldering; unsuitable for fully SMT automotive production | Choose for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMAJ36A-E3/5AT and 1.5KE39A, the TPSMC39AHE3_B/H delivers automotive-grade reliability via AEC-Q101 qualification, superior thermal robustness (TJ = 185 °C), and SMC package compatibility with high-volume SMT assembly - making it the preferred choice for production automotive and industrial systems requiring validated surge immunity.
Availability
TPSMC39AHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial power rail protection, and telecom line interface circuits requiring stable component supply, AEC-Q101 compliance, and high-temperature operational continuity.
Supply support for TPSMC39AHE3_B/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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The TPSMC39AHE3_B/H belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for robust transient suppression in harsh-environment applications including automotive powertrain and industrial automation.
FAQ
What is the breakdown voltage tolerance for TPSMC39AHE3_B/H?
The TPSMC39AHE3_B/H has a specified breakdown voltage range of 37.1 V (minimum) to 41.0 V (maximum) at 1 mA test current, with 39.0 V as the nominal value. This ±5% tolerance ensures predictable clamping onset across production lots and temperature extremes, supporting design margining for protected ICs with known absolute maximum ratings.
Is TPSMC39AHE3_B/H suitable for bidirectional transient protection?
No, TPSMC39AHE3_B/H is unidirectional only - it clamps positive transients relative to its cathode terminal and blocks reverse voltage up to VWM = 33.3 V. For bidirectional protection, a pair of TPSMC39AHE3_B/H devices in series opposition or a dedicated bidirectional TVS such as TPSMC39CAHE3_B/H would be required.
Does TPSMC39AHE3_B/H require derating at elevated ambient temperatures?
Yes, TPSMC39AHE3_B/H must be derated above 25 °C ambient per Figure 2 in the datasheet. At 125 °C ambient, its peak pulse power drops to approximately 750 W (50% of rated 1500 W), and at 150 °C, it falls to ~500 W. Proper PCB copper pad area (8.0 mm × 8.0 mm per terminal) is essential to maintain thermal performance.
What does the "HE3" suffix indicate in TPSMC39AHE3_B/H?
The "HE3" suffix in TPSMC39AHE3_B/H denotes RoHS-compliant construction and AEC-Q101 qualification. It confirms the device meets automotive reliability standards and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 whisker testing Class 2 - critical for long-term solder joint integrity in automotive applications.
How is the clamping voltage VC measured for TPSMC39AHE3_B/H?
VC for TPSMC39AHE3_B/H is measured as the maximum voltage across the device when subjected to a 10/1000 μs exponential current waveform peaking at 27.8 A - per Figure 3 in the datasheet. This yields a guaranteed VC ≤ 53.9 V, representing worst-case overvoltage seen by downstream circuitry during standardized surge testing.
TPSMC39AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 (SMC)
TPSMC39AHE3_B/H FAQ
1.How can I place an order for TPSMC39AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC39AHE3_B/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 TPSMC39AHE3_B/H reliable?
The price and inventory of TPSMC39AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC39AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMC39AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC39AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC39AHE3_B/H?
TPSMC39AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC39AHE3_B/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 TPSMC39AHE3_B/H?
For technical support, including TPSMC39AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC39AHE3_B/H requirements.
6.How does Aetrix verify that TPSMC39AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMC39AHE3_B/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 TPSMC39AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMC39AHE3_B/H?
All TPSMC39AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC39AHE3_B/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 TPSMC39AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMC39AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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