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Vishay General Semiconductor - Diodes Division TPSMB24HE3/5BT
- Part No.:
- TPSMB24HE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB24HE3/5BT.pdf
- Description:
- TVS DIODE 19.4VWM 34.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,776
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Product details
Overview
TPSMB24HE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features 24 V nominal breakdown voltage (VBR = 22.8–25.2 V at IT = 1 mA), 20.5 V stand-off voltage (VWM), 33.2 V maximum clamping voltage (VC) at 18.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB24HE3/5BT datasheet, TPSMB24HE3/5BT pinout, TPSMB24HE3/5BT application, or TPSMB24HE3/5BT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, TJ = 185 °C operation, low clamping ratio (VC/VWM ≈ 1.63), and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial PCB designs requiring robust ESD and surge immunity.
Technical Context
The TPSMB24HE3/5BT employs passivated anisotropic rectifier technology to achieve stable breakdown characteristics across temperature. Its junction operates up to +185 °C and maintains tight VBR tolerance (±5%) with 0.085 %/°C temperature coefficient, enabling predictable clamping in under-hood automotive environments.
It delivers 600 W peak pulse power per 10/1000 µs waveform with low incremental surge resistance, ensuring fast response (<1 ns) and minimal voltage overshoot during transient events. The device is rated for 75 A non-repetitive forward surge current (IFSM) and exhibits only 3.5 V forward voltage at 50 A, supporting high-energy surge absorption without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 / 24.0 / 25.2 V at 1 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 20.5 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 33.2 V at 18.1 A - peak clamped voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W (10/1000 µs) - energy-handling capacity for repetitive surge events at 0.01% duty cycle |
| TJ max. | +185 °C - enables placement near hot components (e.g., power MOSFETs, DC/DC converters) without derating |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation |
| Package | SMB (DO-214AA) - industry-standard SMD outline with 0.205" × 0.220" footprint and MSL Level 1 rating |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by color band. Compliant with UL 94 V-0 flammability rating and J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE > VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Junction passivation | Stable VBR drift < ±5% over lifetime; prevents parameter shift under humidity or bias stress |
| Low clamping ratio (VC/VWM) | 1.62 - minimizes overvoltage margin required between protected IC's absolute max rating and VWM |
| MSL Level 1 (260 °C peak) | Enables standard reflow assembly without pre-baking; supports high-volume automated manufacturing |
| 185 °C junction rating | Eliminates thermal derating in engine control units (ECUs) and power inverters operating above 150 °C ambient |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp spikes up to ±100 V. Use Value: Limits rail voltage to ≤33.2 V during 600 W surges, preventing damage to MCU, CAN transceivers, and analog front-ends. |
Use Scenario: Shielding 4–20 mA current-loop sensors in factory automation from EFT and surge coupling. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across sensor output terminals to shunt fast transients. Use Value: Sub-1 ns response ensures signal integrity remains intact; 1 μA leakage at 20.5 V avoids loop current error. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Surge Suppression |
|
Use Scenario: Secondary-side overvoltage protection in 24 V wall adapters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after rectification but before primary DC-DC stage input. Use Value: Withstands repeated 600 W pulses without degradation; RoHS-compliant HE3 suffix meets global compliance requirements. |
Use Scenario: Protecting PoE-powered remote radio units from induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: Unidirectional TVS installed at DC input connector to divert common-mode transients to earth ground. Use Value: 75 A IFSM rating handles multi-pulse surge events; 185 °C rating supports outdoor enclosure operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Same SMB package, identical VBR (22.8–25.2 V), but not AEC-Q101 qualified; lower TJ max. (150 °C) | Limited to commercial/industrial use; unsuitable for automotive under-hood deployment | Select SMBJ24A only if AEC-Q101 and 185 °C operation are not required. |
| TPSMB24AHM3/5BT | Halogen-free variant of same base part; identical electrical specs and AEC-Q101 qualification; differs only in material composition | No functional difference; chosen solely for halogen-free compliance in specific regional regulatory programs | Choose TPSMB24AHM3/5BT when halogen-free materials are mandated by OEM or environmental policy. |
Compared with SMBJ24A, TPSMB24HE3/5BT provides extended thermal capability and automotive qualification; compared with TPSMB24AHM3/5BT, it offers RoHS compliance without halogen-free constraints - making TPSMB24HE3/5BT the preferred choice for cost-sensitive AEC-Q101 applications where halogen content is unrestricted.
Availability
TPSMB24HE3/5BT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power feeders requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPSMB24HE3/5BT 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 and high-temperature performance.
The TPSMB series was engineered specifically for high-reliability transient suppression in automotive and industrial environments, targeting applications demanding AEC-Q101 qualification, 185 °C operation, and stable clamping under thermal stress.
FAQ
What is the maximum clamping voltage of the TPSMB24HE3/5BT during a 600 W transient event?
The TPSMB24HE3/5BT clamps to a maximum of 33.2 V when subjected to its rated 18.1 A peak pulse current (10/1000 µs waveform). This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - a critical parameter for ensuring downstream ICs remain within their absolute maximum ratings. The TPSMB24HE3/5BT achieves this with low dynamic impedance and stable junction behavior up to 185 °C.
Is the TPSMB24HE3/5BT suitable for automotive applications?
Yes, the TPSMB24HE3/5BT is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature, making it suitable for under-hood automotive applications such as engine control modules, body control units, and ADAS power supplies. Its unidirectional polarity, low clamping ratio, and robust surge handling align with ISO 7637-2 and ISO 16750-2 test requirements. The TPSMB24HE3/5BT also meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow compatibility.
What does the "HE3" suffix indicate in TPSMB24HE3/5BT?
The "HE3" suffix in TPSMB24HE3/5BT denotes a RoHS-compliant, AEC-Q101-qualified version with matte tin-plated leads and JESD201 Class 2 whisker resistance. It specifies compliance with lead-free soldering standards (peak reflow temperature 260 °C) and automotive reliability testing. The "/5BT" denotes packaging in 7" tape-and-reel format with 750 units per reel - a detail confirmed in Vishay's official ordering information table for the TPSMB24HE3/5BT.
How does the TPSMB24HE3/5BT compare to bidirectional TVS diodes?
The TPSMB24HE3/5BT is unidirectional and therefore protects only against positive-going transients on the cathode side relative to anode - unlike bidirectional variants that clamp both polarities. This makes the TPSMB24HE3/5BT ideal for DC power rail protection where polarity is fixed, offering tighter VBR tolerance and lower leakage than equivalent bidirectional parts. Its design eliminates ambiguity in grounding configuration, simplifying layout for systems like 24 V automotive supplies where reverse polarity is not expected.
What is the standoff voltage (VWM) and why is it important for TPSMB24HE3/5BT?
The TPSMB24HE3/5BT has a maximum standoff voltage (VWM) of 20.5 V, meaning it remains in high-impedance state with leakage < 1 μA up to this DC or RMS voltage. This parameter ensures no interference with normal circuit operation while guaranteeing reliable turn-on only during overvoltage events exceeding VBR. Selecting a VWM ≥10–20% below the protected rail's maximum steady-state voltage - e.g., 20.5 V for a 24 V system - is essential to avoid false triggering and ensure long-term reliability of the TPSMB24HE3/5BT.
TPSMB24HE3/5BT 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):
- 19.4V
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.7V
- Current - Peak Pulse (10/1000µs):
- 17.3A
- 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)
TPSMB24HE3/5BT FAQ
1.How can I place an order for TPSMB24HE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB24HE3/5BT 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 TPSMB24HE3/5BT reliable?
The price and inventory of TPSMB24HE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB24HE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB24HE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB24HE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB24HE3/5BT?
TPSMB24HE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB24HE3/5BT 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 TPSMB24HE3/5BT?
For technical support, including TPSMB24HE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB24HE3/5BT requirements.
6.How does Aetrix verify that TPSMB24HE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB24HE3/5BT 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 TPSMB24HE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB24HE3/5BT?
All TPSMB24HE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB24HE3/5BT, 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 TPSMB24HE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB24HE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB24HE3/5BT Tags
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