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Vishay General Semiconductor - Diodes Division TPSMA39AHE3/5AT
- Part No.:
- TPSMA39AHE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA39AHE3/5AT.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,903
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Product details
Overview
TPSMA39AHE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 39.0 V nominal breakdown voltage (VBR), 53.9 V maximum clamping voltage (VC) at 7.4 A peak pulse current, 400 W peak pulse power (10/1000 µs), 185 °C max junction temperature, and AEC-Q101 qualification - used in automotive sensor protection and industrial power rail surge suppression.
For engineers reviewing the TPSMA39AHE3/5AT datasheet, TPSMA39AHE3/5AT pinout, TPSMA39AHE3/5AT application, or TPSMA39AHE3/5AT equivalent, key selection criteria include unidirectional polarity, 33.3 V stand-off voltage (VWM), low 1.0 µA reverse leakage at VWM, MSL Level 1 moisture sensitivity, and compatibility with reflow soldering up to 260 °C peak.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge conditions. Its 185 °C junction rating enables operation in high-temperature automotive engine compartments and industrial motor drives without derating penalties above 125 °C.
The device exhibits fast response time (<1 ps) and low incremental surge resistance, ensuring effective suppression of ESD and lightning-induced transients. It meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements for safety-critical PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 V / 39.0 V / 41.0 V - defines minimum voltage at which device enters avalanche conduction during transient events |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 53.9 V at 7.4 A - clamped voltage seen by protected circuit during 400 W, 10/1000 µs surge |
| PPPM | 400 W - peak pulse power handling capability per single 10/1000 µs waveform |
| TJ max. | +185 °C - enables use in under-hood automotive modules and high-ambient industrial controls |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked with band |
| MSL Level | Level 1 (J-STD-020) - supports standard SMT reflow without dry-pack or baking requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, 0.064 g unit weight. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side reference in unidirectional TVS configuration |
| Cathode | Current exit point during avalanche clamping | Connected to protected line; color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| 185 °C junction rating | Eliminates thermal derating in engine control units and power inverters operating above 150 °C ambient |
| 400 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a transients and IEC 61000-4-5 Level 3 surges on 12 V/24 V systems |
| Low 1.0 µA leakage @ VWM | Minimizes standby power loss in always-on automotive modules and battery-powered sensors |
| MSL Level 1, 260 °C peak reflow | Enables drop-in placement into standard lead-free SMT lines without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp transients before they reach sensitive input pins. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends while maintaining signal integrity below 33.3 V normal operation. |
Use Scenario: Safeguarding 24 V DC input rails in PLC I/O modules and motor drive controllers against 400 V/12 Ω surge events per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main supply input, coordinated with upstream fuses and downstream regulators. Use Value: Limits rail voltage excursion to ≤53.9 V during 400 W surges, preserving MOSFET gate oxide integrity and regulator stability. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Transient suppression on Ethernet PHY power pins and PoE injectors exposed to lightning-induced surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Secondary-level TVS on isolated DC-DC converter inputs, working with primary GDT or MOV stages. Use Value: Provides precise 39 V clamping with <1 ps response to complement slower bulk protectors, reducing let-through energy to <10 mJ. |
Use Scenario: Input-stage surge protection in USB-C PD adapters and wireless charging base stations subjected to EN 61000-4-4 EFT bursts. IC Role / Device Role / Timing Role: Fast-acting clamping device across AC-DC rectified output or DC bus before primary controller IC. Use Value: Maintains 33.3 V stand-off during no-load conditions while clamping 1 kV EFT pulses to 53.9 V within nanoseconds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39A | Same VBR (39 V), but lower PPPM = 400 W (same), higher VC = 60.0 V, non-AEC-Q101 rated | Lacks automotive qualification; suitable for commercial/industrial only | Select when AEC-Q101 compliance is not required and cost is prioritized over automotive traceability |
| SMCJ39A | Same VBR/VC, but larger SMC (DO-214AB) package, higher IFSM = 100 A vs. 40 A, same PPPM | Requires larger PCB footprint; better for high-repetition surge duty cycles | Select when board space allows and higher surge repetition rate (>0.01% duty cycle) is needed |
Compared with SMAJ39A and SMCJ39A, the TPSMA39AHE3/5AT uniquely combines AEC-Q101 qualification, MSL Level 1, and DO-214AC form factor - making it optimal for space-constrained automotive modules where qualification and reflow compatibility are mandatory.
Availability
TPSMA39AHE3/5AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power rail clamping, and telecom line interface applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMA39AHE3/5AT 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-temperature, and automotive-qualified components.
The TPSMA39AHE3/5AT belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for robust surge immunity in harsh environments - targeting automotive, industrial, and telecom infrastructure applications where failure is not acceptable.
FAQ
What is the clamping voltage of the TPSMA39AHE3/5AT at its rated peak pulse current?
The TPSMA39AHE3/5AT has a maximum clamping voltage (VC) of 53.9 V at 7.4 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value ensures protected circuits remain below critical voltage thresholds during standardized surge events. The TPSMA39AHE3/5AT achieves this clamping performance while maintaining low dynamic impedance and minimal let-through energy to downstream ICs.
Is the TPSMA39AHE3/5AT qualified for automotive applications?
Yes, the TPSMA39AHE3/5AT is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified construction. This qualification covers stress tests including HTGB, H3TRB, and temperature cycling - validating the TPSMA39AHE3/5AT for use in engine control, body electronics, and ADAS modules.
What is the stand-off voltage (VWM) of the TPSMA39AHE3/5AT, and why does it matter?
The TPSMA39AHE3/5AT has a stand-off voltage (VWM) of 33.3 V, meaning it remains non-conductive up to this reverse voltage level with leakage <1.0 µA. This parameter ensures the TPSMA39AHE3/5AT does not interfere with normal 24 V or 32 V system operation while remaining ready to clamp transients exceeding that threshold - critical for reliable power rail protection.
Does the TPSMA39AHE3/5AT require special handling during PCB assembly?
No - the TPSMA39AHE3/5AT is rated MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, compatible with standard lead-free SMT processes. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, and the TPSMA39AHE3/5AT requires no baking or dry-pack prior to assembly.
How does the TPSMA39AHE3/5AT differ from the TPSMA39AHE3/B?
The TPSMA39AHE3/5AT uses tape-and-reel packaging with 7" diameter reels (1800 pcs/reel), whereas TPSMA39AHE3/B denotes a different reel size or carrier specification - typically 13" reels (7500 pcs). Both share identical electrical specs, AEC-Q101 qualification, and DO-214AC package; only packaging and quantity differ. The TPSMA39AHE3/5AT is optimized for mid-volume automated placement lines.
TPSMA39AHE3/5AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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):
- 7.4A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA39AHE3/5AT FAQ
1.How can I place an order for TPSMA39AHE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA39AHE3/5AT 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 TPSMA39AHE3/5AT reliable?
The price and inventory of TPSMA39AHE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA39AHE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA39AHE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA39AHE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA39AHE3/5AT?
TPSMA39AHE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA39AHE3/5AT 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 TPSMA39AHE3/5AT?
For technical support, including TPSMA39AHE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA39AHE3/5AT requirements.
6.How does Aetrix verify that TPSMA39AHE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA39AHE3/5AT 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 TPSMA39AHE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA39AHE3/5AT?
All TPSMA39AHE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA39AHE3/5AT, 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 TPSMA39AHE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA39AHE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA39AHE3/5AT Tags
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