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Vishay General Semiconductor - Diodes Division TPSMB39HE3/52T
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- Part No.:
- TPSMB39HE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB39HE3/52T.pdf
- Description:
- TVS DIODE 31.6VWM 56.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,507
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Product details
Overview
TPSMB39HE3/52T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive and lightning-induced transients on power rails and signal lines. It features 39 V breakdown voltage (VBR = 37.1–41.0 V at IT = 1 mA), 33.3 V stand-off voltage (VWM), 53.9 V clamping voltage (VC) at 11.1 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - ideal for automotive power rail protection.
For engineers reviewing the TPSMB39HE3/52T datasheet, TPSMB39HE3/52T pinout, TPSMB39HE3/52T application, or TPSMB39HE3/52T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, 185 °C thermal capability, and verified clamping performance under repetitive surge conditions per IEC 61000-4-5.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its junction passivation enables reliable operation at TJ = 185 °C and meets AEC-Q101 stress requirements for automotive under-hood applications.
The device delivers fast response time (<1 ps) and excellent clamping ratio (VC/VWM ≈ 1.62), with low leakage (<1 µA at VWM) and stable VBR temperature coefficient (+0.091 %/°C). It is rated for 75 A non-repetitive forward surge (8.3 ms half-sine) and derates linearly above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V at 1 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 53.9 V at 11.1 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 600 W - peak pulse power handling capacity under standardized transient waveform |
| TJ max. | +185 °C - enables use in high-temperature environments including engine control units and DC-DC converters |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked by band |
| Package | SMB (DO-214AA) - industry-standard SMD outline with 0.220" x 0.130" footprint and MSL Level 1 rating |
Pinout & Package
SMB (DO-214AA) surface-mount package with matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by color band; terminals are anode and cathode only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal under forward bias | Connected to protected line's lower-potential side (e.g., ground or return path) |
| Cathode | Current exit terminal under forward bias; marked with band | Connected to protected line's higher-potential side (e.g., VIN, signal line, or power rail) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing |
| 185 °C junction rating | Supports placement near heat sources (e.g., power MOSFETs, inductors) without derating penalty |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV) on 2 Ω source impedance |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage margin required for downstream ICs' absolute maximum ratings |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive surges. Use Value: Withstands 75 A 8.3 ms surge and maintains clamping below 54 V, preserving MCU and CAN transceiver integrity. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential or single-ended signal pair to ground. Use Value: Sub-1 µA leakage at 33.3 V ensures minimal signal offset; fast response prevents latch-up in precision ADC front-ends. |
| Telecom DC Power Input Stage | Consumer USB Power Delivery Port |
Use Scenario: Safeguarding PoE-powered equipment inputs against induced surges on long Ethernet runs. IC Role / Device Role / Timing Role: Primary clamping device on 48 V DC input, upstream of DC-DC converter. Use Value: 600 W rating handles multi-pulse surge sequences; 185 °C rating supports sealed enclosure thermal design. |
Use Scenario: Overvoltage suppression on VBUS line of USB-C ports exposed to hot-plug and adapter faults. IC Role / Device Role / Timing Role: Standoff-rated TVS between VBUS and GND, sized to survive repeated 10/1000 µs transients. Use Value: 33.3 V VWM accommodates USB PD 3.0 20 V profiles while clamping to 53.9 V - within USB-C VBUS absolute max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | Lower PPPM (400 W), VBR = 36–39.8 V, VC = 58.1 V @ 6.9 A, SMB package | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin |
| TPSMB36HE3/52T | 36 V VBR (34.2–37.8 V), 30.8 V VWM, 49.9 V VC @ 12 A, identical package and AEC-Q101 rating | Better suited for 24 V nominal systems requiring tighter clamping margin | Choose for 24 V rail protection where lower VC reduces stress on 36 V-rated downstream FETs |
Compared with SMAJ36A and TPSMB36HE3/52T, the TPSMB39HE3/52T provides higher standoff and clamping voltages optimized for 36 V nominal systems - delivering superior margin against false triggering while maintaining full automotive qualification and 600 W surge capability.
Availability
TPSMB39HE3/52T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom DC input staging, and consumer USB-C VBUS safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for TPSMB39HE3/52T 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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The TPSMB39HE3/52T belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for high-temperature, high-surge environments where AEC-Q101 compliance and robust clamping performance are mandatory.
FAQ
What is the exact breakdown voltage range for TPSMB39HE3/52T?
The TPSMB39HE3/52T has a guaranteed breakdown voltage (VBR) range of 37.1 V to 41.0 V at test current IT = 1 mA, per Vishay Document 88406. This range reflects manufacturing tolerance and ensures consistent clamping behavior across production lots. The nominal value is 39.0 V, and the device is tested to this specification during final electrical test.
Is TPSMB39HE3/52T qualified for automotive applications?
Yes, TPSMB39HE3/52T is AEC-Q101 qualified - confirmed by its HE3 suffix and explicit listing in Vishay's qualified product documentation. It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and human-body-model ESD (≥8 kV contact). This makes TPSMB39HE3/52T suitable for under-hood and body-control module applications.
What is the clamping voltage of TPSMB39HE3/52T under surge conditions?
The TPSMB39HE3/52T clamps to a maximum of 53.9 V at 11.1 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents worst-case VC across temperature and lot variation. At lower currents (e.g., 1 A), clamping drops to ~42 V, enabling precise overvoltage margining in sensitive circuits.
Does TPSMB39HE3/52T have a bidirectional variant?
No, TPSMB39HE3/52T is unidirectional only - as stated in the Vishay datasheet under FEATURES. Bidirectional variants are not offered in the TPSMBxxA family. For bidirectional protection, engineers must select alternate families such as SMBJxxCA or SMCJxxCA, which differ in package (SMB vs. SMC) and surge rating (600 W vs. 1500 W).
What is the maximum operating temperature for TPSMB39HE3/52T?
The TPSMB39HE3/52T has a maximum junction temperature (TJ) rating of +185 °C, validated per AEC-Q101 requirements. This allows direct placement near high-power components without thermal derating penalties. The device remains fully functional across the full storage and operating range of –65 °C to +185 °C, supporting extended-temperature automotive and industrial deployments.
TPSMB39HE3/52T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 31.6V
- Voltage - Breakdown (Min):
- 35.1V
- Voltage - Clamping (Max) @ Ipp:
- 56.4V
- Current - Peak Pulse (10/1000µs):
- 10.6A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
TPSMB39HE3/52T FAQ
1.How can I place an order for TPSMB39HE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB39HE3/52T 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 TPSMB39HE3/52T reliable?
The price and inventory of TPSMB39HE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB39HE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB39HE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB39HE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB39HE3/52T?
TPSMB39HE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB39HE3/52T 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 TPSMB39HE3/52T?
For technical support, including TPSMB39HE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB39HE3/52T requirements.
6.How does Aetrix verify that TPSMB39HE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB39HE3/52T 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 TPSMB39HE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB39HE3/52T?
All TPSMB39HE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB39HE3/52T, 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 TPSMB39HE3/52T part is unused and in its original packaging.
Return procedure for TPSMB39HE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB39HE3/52T Tags
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