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Vishay General Semiconductor - Diodes Division TPSMB39AHE3_A/H
- Part No.:
- TPSMB39AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB39AHE3_A/H.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,004
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Product details
Overview
TPSMB39AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive and lightning-induced transients on power rails and signal lines. It features a 39 V breakdown voltage (VBR = 37.1–41.0 V at IT = 1 mA), 33.3 V stand-off voltage (VWM), 53.9 V maximum 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 - used in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB39AHE3_A/H datasheet, TPSMB39AHE3_A/H pinout, TPSMB39AHE3_A/H application, or TPSMB39AHE3_A/H equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification, TJ = 185 °C rating, and clamping performance under repetitive surge conditions per IEC 61000-4-5.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional architecture provides forward conduction only during overvoltage events, with fast response time enabling sub-nanosecond clamping onset.
The device is rated for 75 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits a typical VBR temperature coefficient of +0.091 %/°C, supporting predictable voltage drift across its -65 °C to +185 °C operating range.
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 for avalanche conduction initiation |
| VWM | 33.3 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 53.9 V at 11.1 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 600 W - peak pulse power handling capability under standardized transient waveform |
| TJ max. | +185 °C - enables use in under-hood automotive and high-ambient industrial environments |
| Polarity | Unidirectional - cathode-banded configuration for DC rail protection only |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.205" × 0.220" footprint |
Pinout & Package
TPSMB39AHE3_A/H uses the SMB (DO-214AA) package: a two-terminal, surface-mount plastic case with matte tin-plated leads, MSL Level 1 rating, and cathode indicated by a color band. Dimensions are 3.94 mm × 2.20 mm × 1.52 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage |
| Anode | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure ensures stable VBR and low leakage over lifetime and temperature |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| MSL Level 1 | Reflow-compatible up to 260 °C peak without preconditioning - supports standard SMT assembly |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin |
| High-temperature operation | Rated for continuous operation at TJ = 185 °C - suitable for engine control units and motor drives |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 33.3 V. Use Value: Limits voltage seen by downstream regulators and microcontrollers to ≤53.9 V during 11.1 A pulses, preventing latch-up or damage. | 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 on signal line to ground, leveraging fast response and minimal loading. Use Value: Clamps ±8 kV contact ESD (IEC 61000-4-2) while maintaining signal integrity due to stable VBR and low leakage (<1 µA at VWM). |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Stage |
Use Scenario: Safeguarding PoE-powered equipment inputs against lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS on DC input side of PD controller, coordinated with secondary-stage protection. Use Value: Absorbs 600 W transient energy (10/1000 µs) without degradation, preserving isolation barrier integrity. | Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters after rectification and bulk capacitance. IC Role / Device Role / Timing Role: Standoff-rated TVS across output capacitor to prevent regulator overvoltage during no-load or fault conditions. Use Value: Maintains 33.3 V hold-off during normal operation while clamping to 53.9 V during surge, avoiding false triggering of OVP circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | VBR = 40–44.2 V; VC = 58.1 V at 10.3 A; same SMB package and unidirectional polarity | Higher clamping voltage (+4.2 V) and slightly lower IPPM (10.3 A vs. 11.1 A) | Select when tighter VBR tolerance (±5 %) and higher VWM (36.8 V) are required for 36 V nominal systems |
| SMCJ36A | Same VBR/VWM range but in larger SMC (DO-214AB) package; PPPM = 1500 W | Higher power handling but 2.5× larger footprint and different thermal profile | Choose for higher-energy surge immunity where board space allows and thermal mass improves reliability |
Compared with SMBJ36A and SMCJ36A, the TPSMB39AHE3_A/H offers the optimal balance of compact SMB footprint, AEC-Q101 qualification, and precise 39 V breakdown targeting 33.3 V nominal rails - making it preferred for space-constrained automotive and industrial modules requiring validated reliability.
Availability
TPSMB39AHE3_A/H is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, telecom surge protection, and consumer power adapter designs requiring stable component supply and long-term lifecycle support.
Supply support for TPSMB39AHE3_A/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, TVS devices, and optoelectronics with emphasis on reliability, high-temperature operation, and automotive qualification.
The TPSMB series belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for robust transient suppression in harsh environments - including under-hood automotive, industrial automation, and infrastructure equipment.
FAQ
What is the breakdown voltage tolerance of the TPSMB39AHE3_A/H?
The TPSMB39AHE3_A/H has a guaranteed breakdown voltage range of 37.1 V to 41.0 V at test current IT = 1 mA, corresponding to a ±5 % tolerance around the nominal 39 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in 33.3 V nominal systems.
Is the TPSMB39AHE3_A/H RoHS-compliant and halogen-free?
Yes, the TPSMB39AHE3_A/H carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. It is not halogen-free; for halogen-free compliance, the HM3 suffix variant (e.g., TPSMB39AHM3_A/H) must be selected per Vishay's ordering matrix.
What is the maximum clamping voltage of the TPSMB39AHE3_A/H under surge conditions?
The TPSMB39AHE3_A/H has a maximum clamping voltage VC of 53.9 V at IPPM = 11.1 A using the standardized 10/1000 µs waveform. This value represents the peak voltage seen across the device during worst-case surge events and directly determines the protection level afforded to downstream circuitry.
Does the TPSMB39AHE3_A/H require derating at elevated ambient temperatures?
Yes, the TPSMB39AHE3_A/H must be derated above TA = 25 °C per Figure 2 in the datasheet. At 125 °C ambient, its peak pulse power capability drops to approximately 300 W (50 % of rated 600 W), and its IPPM decreases proportionally - requiring thermal design validation for high-temperature deployments.
Can the TPSMB39AHE3_A/H be used in bidirectional configurations?
No, the TPSMB39AHE3_A/H is unidirectional only, with cathode marked by a band. Bidirectional protection requires either a dedicated bidirectional TVS (e.g., TPSMB39CA) or back-to-back connection of two unidirectional devices - neither of which is supported by the TPSMB39AHE3_A/H's construction or qualification.
TPSMB39AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 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 (SMB)
TPSMB39AHE3_A/H FAQ
1.How can I place an order for TPSMB39AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB39AHE3_A/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 TPSMB39AHE3_A/H reliable?
The price and inventory of TPSMB39AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB39AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMB39AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB39AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB39AHE3_A/H?
TPSMB39AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB39AHE3_A/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 TPSMB39AHE3_A/H?
For technical support, including TPSMB39AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB39AHE3_A/H requirements.
6.How does Aetrix verify that TPSMB39AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB39AHE3_A/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 TPSMB39AHE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMB39AHE3_A/H?
All TPSMB39AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB39AHE3_A/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 TPSMB39AHE3_A/H part is unused and in its original packaging.
Return procedure for TPSMB39AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB39AHE3_A/H Tags
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