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Vishay General Semiconductor - Diodes Division TPSMB9.1HE3/5BT
- Part No.:
- TPSMB9.1HE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB9.1HE3/5BT.pdf
- Description:
- TVS DIODE 7.37VWM 13.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,924
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Product details
Overview
TPSMB9.1HE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features a 9.1 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 13.4 V maximum clamping voltage at 44.8 A peak pulse current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPSMB9.1HE3/5BT datasheet, TPSMB9.1HE3/5BT pinout, TPSMB9.1HE3/5BT application, or TPSMB9.1HE3/5BT equivalent, this device is selected for high-reliability automotive and industrial power rail protection where AEC-Q101 qualification, low clamping voltage, and MSL Level 1 solderability are required.
Technical Context
The TPSMB9.1HE3/5BT uses passivated anisotropic rectifier technology to deliver stable breakdown behavior across temperature and lifetime. Its unidirectional polarity supports DC-biased protection paths, and its 10/1000 µs waveform rating reflects standardized surge immunity testing per ANSI/IEEE C62.35.
With a 0.060 %/°C temperature coefficient of VBR, it maintains predictable clamping over -65 °C to +185 °C operating range. The SMB (DO-214AA) package enables compact PCB layout while meeting UL 94 V-0 flammability and JESD 201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1 mA test current - defines precise clamping onset threshold under transient stress |
| Stand-off Voltage VWM | 7.78 V - maximum continuous reverse voltage before leakage exceeds 25 µA, ensuring no false triggering |
| Peak Pulse Power PPPM | 600 W (10/1000 µs) - sustains high-energy transients without failure when mounted on 5 mm × 5 mm copper pads |
| Clamping Voltage VC | 13.4 V at 44.8 A IPPM - limits downstream voltage to safe levels for 5 V or 12 V ICs and MOSFETs |
| Junction Temperature Range | -65 °C to +185 °C - supports under-hood automotive and industrial environments without derating |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with cathode band marking and matte tin terminals |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with cathode band marking; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; meets MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping path during reverse-bias conduction |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C Junction Rating | Enables operation in engine control units and power converters without thermal derating penalties |
| 600 W Peak Pulse Power | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V supply rails with margin |
| Low Clamping Ratio (VC/VBR ≈ 1.47) | Minimizes voltage overshoot during fast transients, protecting sensitive gate oxides and logic inputs |
| AEC-Q101 Qualification (HE3 suffix) | Confirms reliability for automotive applications including ADAS power supplies and body control modules |
| MSL Level 1 Reflow Compatibility | Supports standard SMT assembly without moisture sensitivity concerns or bake requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power input and ground to clamp surges above 13.4 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during ISO 7637-2 pulse 5a events. |
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 connected across differential or single-ended signal pairs to ground. Use Value: Limits transient-induced offset errors and preserves signal integrity in 0–10 V or 4–20 mA industrial loops. |
| Consumer Power Adapter Input Protection | Telecom DC Power Feeding Protection |
|
Use Scenario: Safeguarding AC/DC adapter secondary-side outputs against surge coupling from primary side or mains transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on +5 V or +12 V output rail, positioned upstream of LDOs and USB controllers. Use Value: Maintains compliance with IEC 61000-4-5 by limiting output voltage excursion to ≤13.4 V during 1.2/50 µs surges. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras, wireless APs) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Unidirectional TVS installed between PSE output and PD input to absorb longitudinal mode surges. Use Value: Ensures continuity of power delivery during IEEE 802.3bt-compliant surge tests without shutdown or reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Lower PPPM (400 W), higher VC (14.4 V at 27.8 A), same SMB package and unidirectional polarity | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin |
| SMCJ9.0A | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VBR range and AEC-Q101 option available | Requires PCB area increase; better suited for 24 V systems with higher surge energy | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits larger footprint |
Compared with SMAJ9.0A and SMCJ9.0A, the TPSMB9.1HE3/5BT delivers optimal balance of automotive qualification, 600 W surge capability, and SMB footprint-making it preferred for space-constrained 12 V automotive modules where AEC-Q101 compliance is mandatory and surge energy falls within its rated PPPM.
Availability
TPSMB9.1HE3/5BT is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface protection, and telecom DC feeding requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 qualified parts.
Supply support for TPSMB9.1HE3/5BT 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor product line, engineered specifically for robust, low-clamping protection in harsh environments such as automotive under-hood electronics and industrial motor controls.
FAQ
What is the breakdown voltage tolerance for TPSMB9.1HE3/5BT?
The TPSMB9.1HE3/5BT has a specified breakdown voltage (VBR) range of 8.65 V to 9.55 V at 1 mA test current, corresponding to ±5% nominal tolerance around 9.1 V. This tight distribution ensures consistent clamping behavior across production lots and supports reliable design margining in 12 V systems where overvoltage thresholds must remain below 13.4 V.
Is TPSMB9.1HE3/5BT RoHS-compliant and halogen-free?
Yes, the HE3 suffix indicates that TPSMB9.1HE3/5BT is RoHS-compliant and AEC-Q101 qualified. While the HE3 variant is not explicitly halogen-free, the HM3 suffix version (e.g., TPSMB9.1HM3/5BT) meets both RoHS and halogen-free requirements per Vishay's material categorization standard. For TPSMB9.1HE3/5BT, confirm compliance documentation via Vishay's official material declaration portal.
Can TPSMB9.1HE3/5BT be used in bidirectional configurations?
No, TPSMB9.1HE3/5BT is unidirectional only, as confirmed in the Vishay datasheet. It conducts surge current only when the cathode is positive relative to the anode. For AC or bipolar transient protection, a separate bidirectional TVS (e.g., TPSMB9.0CA) or back-to-back unidirectional configuration would be required - neither of which applies to the TPSMB9.1HE3/5BT part number itself.
What is the maximum clamping voltage of TPSMB9.1HE3/5BT at rated peak pulse current?
The maximum clamping voltage (VC) of TPSMB9.1HE3/5BT is 13.4 V at 44.8 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per standard test methods and defines the upper voltage limit imposed on protected circuitry during worst-case surge events, directly supporting compatibility with 5 V and 12 V logic and power stages.
Does TPSMB9.1HE3/5BT require derating at elevated ambient temperatures?
Yes, TPSMB9.1HE3/5BT must be derated above 25 °C ambient per Figure 2 in the Vishay datasheet. Its peak pulse power decreases linearly with increasing junction temperature, reaching ~50% of 600 W at ~125 °C junction. Designers must calculate actual TJ using thermal resistance and power dissipation to ensure operation remains within the -65 °C to +185 °C junction limit, especially in enclosed automotive enclosures.
TPSMB9.1HE3/5BT 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):
- 7.37V
- Voltage - Breakdown (Min):
- 8.19V
- Voltage - Clamping (Max) @ Ipp:
- 13.8V
- Current - Peak Pulse (10/1000µs):
- 43.5A
- 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)
TPSMB9.1HE3/5BT FAQ
1.How can I place an order for TPSMB9.1HE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB9.1HE3/5BT 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 TPSMB9.1HE3/5BT reliable?
The price and inventory of TPSMB9.1HE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB9.1HE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB9.1HE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB9.1HE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB9.1HE3/5BT?
TPSMB9.1HE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB9.1HE3/5BT 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 TPSMB9.1HE3/5BT?
For technical support, including TPSMB9.1HE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB9.1HE3/5BT requirements.
6.How does Aetrix verify that TPSMB9.1HE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB9.1HE3/5BT 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 TPSMB9.1HE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB9.1HE3/5BT?
All TPSMB9.1HE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB9.1HE3/5BT, 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 TPSMB9.1HE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB9.1HE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB9.1HE3/5BT Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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