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Vishay General Semiconductor - Diodes Division TPSMB36A-1BHE3/5BT
- Part No.:
- TPSMB36A-1BHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB36A-1BHE3/5BT.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,156
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Product details
Overview
TPSMB36A-1BHE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features a 36.0 V nominal breakdown voltage (VBR), 30.8 V maximum stand-off voltage (VWM), 49.9 V clamping voltage at 12 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 TPSMB36A-1BHE3/5BT datasheet, TPSMB36A-1BHE3/5BT pinout, TPSMB36A-1BHE3/5BT application, or TPSMB36A-1BHE3/5BT equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and verified clamping performance under 10/1000 µs surge conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional architecture provides reverse-biased clamping only, with cathode-band polarity marking and no forward conduction capability beyond standard diode behavior.
Rated for 600 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, it delivers 49.9 V clamping voltage at 12 A IPPM and maintains stable VBR across -65 °C to +185 °C operating range, with ±0.090 %/°C temperature coefficient - enabling robust protection in automotive engine control units and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 34.2 / 36.0 / 37.8 V - ensures reliable triggering above system nominal voltage while avoiding false clamping during normal operation |
| VWM | 30.8 V - maximum continuous reverse voltage before leakage exceeds 1 µA, compatible with 24 V automotive systems |
| VC @ IPPM | 49.9 V at 12 A - limits transient voltage seen by downstream ICs to safe levels during 10/1000 µs surges |
| PPPM | 600 W - sustains high-energy transients without failure when mounted on 5.0 mm × 5.0 mm copper pads |
| TJ max. | +185 °C - supports under-hood automotive placement and high-reliability industrial environments |
| Polarity | Unidirectional - protects against negative-going transients only; requires correct cathode orientation in PCB layout |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" body length and matte tin-plated leads |
Pinout & Package
TPSMB36A-1BHE3/5BT uses the SMB (DO-214AA) surface-mount package with two terminals: anode and cathode. The cathode is marked by a color band on the body. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during overvoltage to shunt current to ground or rail |
| Anode | Reference/return path | Typically tied to ground or lower-potential rail; completes clamping path during reverse-biased surge events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards |
| Junction passivation | Reduces surface leakage and improves long-term stability under high-humidity and high-temperature bias conditions |
| MSL Level 1 | Compatible with lead-free reflow up to 260 °C peak, eliminating moisture sensitivity concerns during assembly |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response time), enhancing protection fidelity |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS compliance; HM3 suffix adds halogen-free molding compound per IEC 61249-2-21 |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and ground. Use Value: Limits transient voltage to ≤49.9 V, preventing damage to 36 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on differential or single-ended signal lines. Use Value: Clamps sub-100 ns ESD pulses to <50 V while adding <1 pF parasitic capacitance at 1 MHz. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Safeguarding PoE-powered equipment inputs against induced lightning surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary-level unidirectional clamping element on DC input side of PD circuitry. Use Value: Absorbs 600 W surges per IEEE C62.41.2 Category A/B without degradation, supporting 100 kA/m surge immunity. |
Use Scenario: Preventing failure of AC-DC adapter primary-side rectifiers due to mains switching transients. IC Role / Device Role / Timing Role: Secondary-side TVS on low-voltage DC output rail before USB or charging circuitry. Use Value: Maintains 30.8 V stand-off while clamping 12 A surges to 49.9 V, protecting USB-PD controllers and battery management ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | Same SMB package, identical VBR/VC specs, but not AEC-Q101 qualified; MSL Level 1, RoHS-compliant | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated | Select SMBJ36A for cost-sensitive non-automotive applications requiring identical electrical performance |
| TPSMB36CA | Bi-directional variant with same VBR, VC, and PPPM; includes symmetric clamping for AC-coupled or bidirectional signal lines | Supports both positive and negative transients; required for RS-485, CAN, or audio line protection | Choose TPSMB36CA only when bidirectional clamping is needed - not a drop-in replacement for TPSMB36A-1BHE3/5BT |
Compared with SMBJ36A and TPSMB36CA, TPSMB36A-1BHE3/5BT uniquely combines AEC-Q101 qualification, unidirectional clamping, and HE3 suffix RoHS/halogen-free compliance - making it the preferred choice for automotive power rail protection where regulatory compliance and thermal robustness are mandatory.
Availability
TPSMB36A-1BHE3/5BT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power entry points, and consumer power adapter designs requiring stable component supply and long-term lifecycle support.
Supply support for TPSMB36A-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, MOSFETs, and protection devices with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for robust surge immunity in harsh environments - including under-hood automotive, factory automation, and outdoor telecom infrastructure.
FAQ
What is the maximum clamping voltage of the TPSMB36A-1BHE3/5BT under standard test conditions?
The TPSMB36A-1BHE3/5BT has a maximum clamping voltage (VC) of 49.9 V at 12 A peak pulse current (IPPM) using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and reflects the upper limit of voltage imposed on protected circuitry during surge events - critical for ensuring downstream components remain within absolute maximum ratings.
Is the TPSMB36A-1BHE3/5BT qualified for automotive applications?
Yes, the TPSMB36A-1BHE3/5BT is AEC-Q101 qualified, as confirmed by Vishay's documentation for base P/NHE3 variants. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD - validating its suitability for automotive power distribution modules, body control units, and ADAS sensor power supplies.
What does the "HE3" suffix indicate in TPSMB36A-1BHE3/5BT?
The "HE3" suffix in TPSMB36A-1BHE3/5BT denotes RoHS-compliant construction and AEC-Q101 qualification. It also specifies matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, plus JESD 201 Class 2 whisker resistance - distinguishing it from non-qualified or halogen-free HM3 variants.
Can the TPSMB36A-1BHE3/5BT be used in bidirectional signal protection?
No, the TPSMB36A-1BHE3/5BT is unidirectional only and clamps reverse-biased transients only. For bidirectional protection - such as on RS-485, CAN, or audio lines - the TPSMB36CA (bi-directional variant) must be used instead, as explicitly stated in Vishay's ordering information and electrical characteristics table.
What is the thermal derating behavior of the TPSMB36A-1BHE3/5BT above 25 °C ambient?
The TPSMB36A-1BHE3/5BT follows Vishay's standard derating curve (Fig. 2): peak pulse power decreases linearly from 100 % at 25 °C to ~50 % at 125 °C ambient, with full derating to zero at 175 °C. This behavior is defined for mounting on 0.2" × 0.2" copper pads and must be accounted for in high-temperature PCB layouts.
TPSMB36A-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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
TPSMB36A-1BHE3/5BT FAQ
1.How can I place an order for TPSMB36A-1BHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB36A-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 TPSMB36A-1BHE3/5BT reliable?
The price and inventory of TPSMB36A-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 TPSMB36A-1BHE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB36A-1BHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB36A-1BHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB36A-1BHE3/5BT?
TPSMB36A-1BHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB36A-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 TPSMB36A-1BHE3/5BT?
For technical support, including TPSMB36A-1BHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB36A-1BHE3/5BT requirements.
6.How does Aetrix verify that TPSMB36A-1BHE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB36A-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 TPSMB36A-1BHE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB36A-1BHE3/5BT?
All TPSMB36A-1BHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB36A-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 TPSMB36A-1BHE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB36A-1BHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB36A-1BHE3/5BT Tags
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