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Vishay General Semiconductor - Diodes Division TPSMB39AHE3/52T
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- Part No.:
- TPSMB39AHE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB39AHE3/52T.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,123
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Product details
Overview
TPSMB39AHE3/52T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive and lightning-induced transients on power rails and signal lines. It features a 39.0 V breakdown voltage (VBR), 33.3 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 11.1 A peak pulse current (IPPM), and 53.9 V maximum clamping voltage (VC) - deployed in automotive engine control units, industrial sensor interfaces, and telecom power supplies.
For engineers reviewing the TPSMB39AHE3/52T datasheet, TPSMB39AHE3/52T pinout, TPSMB39AHE3/52T application, or TPSMB39AHE3/52T equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification, 185 °C junction temperature rating, and verified clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
The TPSMB39AHE3/52T employs passivated anisotropic rectifier technology to deliver stable breakdown behavior across temperature and lifetime. Its 0.091 %/°C temperature coefficient of VBR enables predictable clamping shift from −65 °C to +185 °C, critical for under-hood automotive environments.
It operates as a single-junction, unidirectional avalanche diode with cathode-band polarity marking. Clamping response is sub-nanosecond, supported by low incremental surge resistance and excellent energy absorption at 600 W (10/1000 µs), validated per ANSI/IEEE C62.35 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - defines precise avalanche initiation threshold at 1 mA test current |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 53.9 V - clamped voltage during 11.1 A 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 600 W - peak transient power dissipation capability under standardized surge waveform |
| TJ max. | +185 °C - enables operation in high-temperature zones like powertrain ECUs without derating |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" x 0.130" footprint and MSL Level 1 rating |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, cathode indicated by color band; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VRM exceeded |
| Anode | Reference node | Typically tied to system ground or low-impedance return path for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional polarity | Enables protection of DC-biased lines without forward conduction during normal operation |
| 185 °C junction rating | Supports placement near heat sources (e.g., power MOSFETs, inductors) without thermal derating |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V systems with margin |
| AEC-Q101 qualification (HE3 suffix) | Validates robustness for automotive applications including engine control, body electronics, and ADAS sensors |
| Low clamping ratio (VC/VBR = 1.38) | Minimizes overvoltage exposure to downstream components compared to higher-ratio TVS devices |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of engine control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between battery rail and LDO input. Use Value: Limits voltage to ≤53.9 V during 11.1 A surge, preventing damage to 40 V-rated regulators and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional TVS connected across sensor output and ground to absorb ESD and cable discharge events. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) within nanoseconds while maintaining <1 µA leakage at 33.3 V operating voltage. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Protection |
Use Scenario: Shielding PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary surge clamp on secondary-side DC bus before DC-DC converter stage. Use Value: Absorbs 600 W transient energy without degradation, preserving 48 V system integrity per IEEE 802.3bt requirements. |
Use Scenario: Adding secondary-side overvoltage protection to USB-C PD adapters delivering up to 20 V. IC Role / Device Role / Timing Role: Standoff-rated TVS on 20 V output rail to guard against regulator failure or feedback loop faults. Use Value: Activates at 37.1 V minimum breakdown, ensuring safe shutdown before downstream 24 V-rated components are overstressed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ39A | Same SMB package, identical VBR (37.1–41.0 V), but rated for 600 W with 10/1000 µs waveform and not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial designs where AEC compliance is not mandated | Select SMBJ39A when cost sensitivity outweighs automotive reliability requirements and qualification documentation is unnecessary |
| TPSMB39AHM3/52T | Identical electrical specs and AEC-Q101 qualification; differs only in halogen-free molding compound (HM3 vs HE3) | Required for RoHS-compliant, halogen-free BOMs in EU automotive programs (e.g., VW TL 813) | Choose TPSMB39AHM3/52T when material compliance mandates halogen-free construction per JESD201 Class 2 whisker resistance |
Compared with SMBJ39A and TPSMB39AHM3/52T, the TPSMB39AHE3/52T provides AEC-Q101 qualification and standard RoHS compliance without halogen-free constraints - making it optimal for Tier 1 automotive subsystems requiring traceable qualification evidence but no halogen-free mandate.
Availability
TPSMB39AHE3/52T is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for TPSMB39AHE3/52T 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, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The TPSMB series belongs to Vishay's PAR® (Protected Avalanche Rectifier) TVS platform, engineered specifically for high-temperature, high-surge environments in automotive power distribution and industrial control systems.
FAQ
What is the maximum clamping voltage of the TPSMB39AHE3/52T under a 10/1000 µs surge?
The TPSMB39AHE3/52T has a maximum clamping voltage (VC) of 53.9 V when subjected to its rated peak pulse current of 11.1 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see limited overvoltage during transient events. The TPSMB39AHE3/52T maintains this clamping performance across its full operating temperature range.
Is the TPSMB39AHE3/52T qualified for automotive use?
Yes, the TPSMB39AHE3/52T is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, making the TPSMB39AHE3/52T suitable for automotive powertrain, body, and ADAS applications where reliability is mission-critical.
What does the "HE3" suffix indicate in TPSMB39AHE3/52T?
The "HE3" suffix denotes RoHS-compliant construction with matte tin-plated leads and AEC-Q101 qualification. It also indicates compliance with JESD201 Class 2 whisker resistance testing. The "52T" denotes tape-and-reel packaging in 13-inch reels with 3200 units per reel - a standard logistics configuration for automated SMT assembly of the TPSMB39AHE3/52T.
How does the TPSMB39AHE3/52T differ from the TPSMB39AHM3/52T?
The TPSMB39AHE3/52T and TPSMB39AHM3/52T share identical electrical specifications and AEC-Q101 qualification, but differ in material composition: HE3 uses standard RoHS-compliant molding compound, while HM3 adds halogen-free formulation required by certain OEM environmental standards. Both are drop-in replacements electrically, but TPSMB39AHM3/52T is selected when halogen-free compliance is mandatory - unlike the TPSMB39AHE3/52T.
What is the standoff voltage (VWM) of the TPSMB39AHE3/52T, and why does it matter?
The TPSMB39AHE3/52T has a maximum standoff voltage (VWM) of 33.3 V, meaning it remains non-conductive with leakage <1 µA up to this DC or RMS voltage. This parameter ensures reliable operation on 32 V nominal systems (e.g., 24 V automotive with 30% tolerance) without false triggering. Exceeding VWM risks premature conduction, so proper margining against system rail variation is essential when applying the TPSMB39AHE3/52T.
TPSMB39AHE3/52T 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- 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)
TPSMB39AHE3/52T FAQ
1.How can I place an order for TPSMB39AHE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB39AHE3/52T 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 TPSMB39AHE3/52T reliable?
The price and inventory of TPSMB39AHE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB39AHE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB39AHE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB39AHE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB39AHE3/52T?
TPSMB39AHE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB39AHE3/52T 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 TPSMB39AHE3/52T?
For technical support, including TPSMB39AHE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB39AHE3/52T requirements.
6.How does Aetrix verify that TPSMB39AHE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB39AHE3/52T 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 TPSMB39AHE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB39AHE3/52T?
All TPSMB39AHE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB39AHE3/52T, 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 TPSMB39AHE3/52T part is unused and in its original packaging.
Return procedure for TPSMB39AHE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB39AHE3/52T Tags
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