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Vishay General Semiconductor - Diodes Division TPSMB39A-1BHE3/5BT
- Part No.:
- TPSMB39A-1BHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB39A-1BHE3/5BT.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,741
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Product details
Overview
TPSMB39A-1BHE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features a 39 V breakdown voltage (VBR = 37.1–41.0 V at 1 mA), 33.3 V stand-off voltage (VWM), 53.9 V clamping voltage at 11.1 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature. It is used in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB39A-1BHE3/5BT datasheet, TPSMB39A-1BHE3/5BT pinout, TPSMB39A-1BHE3/5BT application, or TPSMB39A-1BHE3/5BT equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, clamping performance under 10/1000 µs surge, and thermal derating above 25 °C ambient.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-reliability transient suppression. Its junction design delivers low incremental surge resistance and excellent clamping capability with sub-nanosecond response time, enabling effective protection of downstream MOSFETs and ICs against fast-rising ESD and load-dump events.
The device is rated for repetitive 600 W pulse dissipation at TA = 25 °C on 5.0 mm × 5.0 mm copper pads, with thermal derating per Figure 2. It meets MSL Level 1 per J-STD-020 (260 °C peak reflow), and the HE3 suffix confirms RoHS compliance and AEC-Q101 qualification for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 37.1–41.0 V at 1 mA - defines minimum voltage at which clamping initiates reliably under surge conditions |
| Stand-off Voltage VWM | 33.3 V - maximum continuous reverse voltage before leakage exceeds 1 μA; sets operating margin below clamping threshold |
| Clamping Voltage VC | 53.9 V at 11.1 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge event |
| Peak Pulse Power PPPM | 600 W - energy-handling capacity for standardized 10/1000 µs waveform; determines survivability of common transients |
| Operating Temperature | -65 °C to +185 °C - enables deployment in under-hood automotive and high-temperature industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with cathode band marking; compatible with automated assembly |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VIN exceeds VBR |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current loop |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift < ±5 % over lifetime and >1000 hrs HTOL at 150 °C |
| TJ = 185 °C capability | Supports placement near heat sources (e.g., power converters) without derating loss in surge rating |
| 600 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1 (inductive switch-off) and IEC 61000-4-5 Combination Wave (10/700 µs) surges |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for 3.3 V/5 V logic interfaces |
| MSL Level 1 (260 °C peak) | Eliminates moisture sensitivity concerns; allows standard SMT reflow without baking preconditioning |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 33.3 V. Use Value: Limits peak rail voltage to ≤53.9 V during 11.1 A surge, preventing damage to LDOs and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair to shunt transients before front-end amplifier. Use Value: Sub-1 ns response ensures clamping occurs before sensitive op-amp input stages are overstressed. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feed Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side controllers from mains-borne surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Mounted across bulk capacitor terminals to absorb line-to-line and line-to-ground transients. Use Value: 600 W rating supports repeated surge exposure in unregulated wall adapters without parameter shift. |
Use Scenario: Protecting PoE-powered equipment (IEEE 802.3af/at) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Bidirectional clamping not required; unidirectional TPSMB39A-1BHE3/5BT used from feed line to return. Use Value: 33.3 V VWM provides 15 % margin above nominal 48 V / 2 ratio, allowing safe operation with ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 | VBR = 40–44.2 V; VWM = 36 V; VC = 58.1 V @ 10.3 A; same SMB package | Higher VWM reduces leakage at 33–35 V rails but increases clamping voltage by ~4.2 V | Select when protecting 36 V nominal systems where tighter VWM/VBR margin is needed |
| TPSMB39CA-1BHE3/5BT | Bi-directional variant; symmetric VBR (±39 V); same VC, PPPM, and package | Required for AC-coupled or bidirectional signal lines (e.g., RS-485, CAN bus) subject to polarity-reversal surges | Choose only if transient threat includes negative-going excursions; otherwise unidirectional offers lower cost and leakage |
Compared with SMBJ36A-E3/52 and TPSMB39CA-1BHE3/5BT, the TPSMB39A-1BHE3/5BT provides optimal clamping headroom for 33.3 V stand-off in automotive 12 V systems, with verified AEC-Q101 qualification and lower VC than the SMBJ series-critical for protecting 3.3 V logic powered from regulated 5 V rails.
Availability
TPSMB39A-1BHE3/5BT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power feed circuits requiring stable component supply with AEC-Q101 assurance and high-temperature operational integrity.
Supply support for TPSMB39A-1BHE3/5BT 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, thermal performance, and automotive qualification.
The TPSMB39A-1BHE3/5BT belongs to Vishay's PAR® (Protected Anisotropic Rectifier) TVS family, engineered specifically for high-energy transient suppression in harsh environments where long-term stability and AEC-Q101 compliance are mandatory.
FAQ
What is the exact breakdown voltage range for TPSMB39A-1BHE3/5BT?
The TPSMB39A-1BHE3/5BT has a guaranteed breakdown voltage (VBR) range of 37.1 V to 41.0 V at 1 mA test current, measured per ANSI/IEEE C62.35. This specification is confirmed in the Vishay datasheet Document Number 88406, Revision 23-Jan-2024, Table on page 2. The nominal VBR is 39.0 V, and the device maintains this tolerance across its full operating temperature range.
Is TPSMB39A-1BHE3/5BT qualified for automotive use?
Yes, TPSMB39A-1BHE3/5BT is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet under "FEATURES" and "ORDERING INFORMATION". The HE3 suffix denotes RoHS-compliant and AEC-Q101 qualified construction. It undergoes stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements, making it suitable for under-hood and body-control module applications.
What does the "-1B" in TPSMB39A-1BHE3/5BT signify?
The "-1B" suffix in TPSMB39A-1BHE3/5BT indicates the revision code for the device's marking and internal manufacturing lot traceability. Per Vishay's ordering convention, "_X" denotes revision (e.g., A, B), and "1B" corresponds to a specific wafer fab and assembly lot configuration. It does not affect electrical specifications but ensures consistent process control and material pedigree for automotive traceability requirements.
Can TPSMB39A-1BHE3/5BT be used in place of TPSMB39CA-1BHE3/5BT?
No-TPSMB39A-1BHE3/5BT is unidirectional, while TPSMB39CA-1BHE3/5BT is bidirectional. Substituting the unidirectional TPSMB39A-1BHE3/5BT for the bidirectional version risks failure on negative-going transients. Use TPSMB39A-1BHE3/5BT only where the protected line has fixed polarity (e.g., positive supply rail to ground); for AC or differential signals, the CA variant is mandatory.
What is the maximum clamping voltage of TPSMB39A-1BHE3/5BT under surge conditions?
The maximum clamping voltage (VC) of TPSMB39A-1BHE3/5BT is 53.9 V at 11.1 A peak pulse current with a 10/1000 µs waveform, as specified in the Electrical Characteristics table (page 2, Document 88406). This value represents the worst-case voltage imposed on the protected circuit during standardized surge testing and is critical for verifying margin against downstream component absolute maximum ratings.
TPSMB39A-1BHE3/5BT 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 (SMB)
TPSMB39A-1BHE3/5BT FAQ
1.How can I place an order for TPSMB39A-1BHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB39A-1BHE3/5BT 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 TPSMB39A-1BHE3/5BT reliable?
The price and inventory of TPSMB39A-1BHE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB39A-1BHE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB39A-1BHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB39A-1BHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB39A-1BHE3/5BT?
TPSMB39A-1BHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB39A-1BHE3/5BT 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 TPSMB39A-1BHE3/5BT?
For technical support, including TPSMB39A-1BHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB39A-1BHE3/5BT requirements.
6.How does Aetrix verify that TPSMB39A-1BHE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB39A-1BHE3/5BT 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 TPSMB39A-1BHE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB39A-1BHE3/5BT?
All TPSMB39A-1BHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB39A-1BHE3/5BT, 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 TPSMB39A-1BHE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB39A-1BHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB39A-1BHE3/5BT Tags
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