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Vishay General Semiconductor - Diodes Division TPSMB9.1A1BHE3/5BT
- Part No.:
- TPSMB9.1A1BHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB9.1A1BHE3/5BT.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,654
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Product details
Overview
TPSMB9.1A1BHE3/5BT 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 9.1 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 44.8 V clamping voltage at 13.4 A peak pulse current, and operates up to +185 °C junction temperature - deployed in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the TPSMB9.1A1BHE3/5BT datasheet, TPSMB9.1A1BHE3/5BT pinout, TPSMB9.1A1BHE3/5BT application, or TPSMB9.1A1BHE3/5BT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HE3 suffix), MSL Level 1 rating, 0.060 %/°C VBR temperature coefficient, and cathode-band-defined terminal orientation for PCB layout verification.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under high-temperature operation (TJ = 185 °C), enabling use in under-hood automotive environments and industrial motor drive control units. Its low incremental surge resistance and fast response time ensure effective suppression of sub-microsecond transients without compromising system-level ESD immunity.
The device is rated for 600 W peak pulse power with 10/1000 µs waveform and supports repetitive surge duty cycles up to 0.01 %, making it suitable for protection of MOSFET gate drivers and microcontroller I/O lines where transient energy is moderate but thermal margin must be preserved across wide ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 8.65 / 9.10 / 9.55 V - defines precise clamping onset threshold at 1 mA test current, critical for matching protected IC's absolute maximum ratings |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 25 µA, ensuring no false triggering during normal operation |
| VC @ IPPM | 44.8 V at 13.4 A - clamped voltage seen by downstream circuitry during worst-case 600 W surge, directly limiting stress on connected components |
| IPPM | 13.4 A - peak pulse current capability under 10/1000 µs waveform, determining minimum trace width and fuse coordination |
| TJ max. | +185 °C - enables placement near heat sources (e.g., power inductors, MOSFETs) without derating, supporting compact automotive ECUs |
| αT | 0.060 %/°C - predictable VBR drift over temperature, allowing accurate margining in thermal-aware protection schemes |
| Package | SMB (DO-214AA) - standardized surface-mount footprint with 0.220" × 0.130" body, compatible with automated pick-and-place and reflow profiles up to 260 °C |
Pinout & Package
SMB (DO-214AA) package with molded plastic body, matte tin-plated leads, and cathode band marking on one end. Leads are solderable per J-STD-002 and JESD 22-B102; meets JESD 201 Class 2 whisker test and UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR, requiring low-inductance ground path design |
| Anode | Reference/ground return | Typically tied to system ground plane; must maintain minimal impedance to avoid clamping voltage overshoot during fast transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and body electronics |
| MSL Level 1 (260 °C peak) | Zero moisture sensitivity risk during standard SMT reflow, eliminating bake requirements and reducing production cost and cycle time |
| 185 °C junction rating | Enables direct placement adjacent to power semiconductors in motor drives or DC-DC converters without thermal derating penalties |
| Low VC/VBR ratio (4.93) | Indicates efficient clamping efficiency - lower ratio reduces voltage overshoot margin needed for downstream component survival |
| Unidirectional polarity only | Optimized for DC-biased rail protection (e.g., 12 V battery inputs); avoids capacitance penalty of bidirectional designs in single-polarity systems |
Applications
| Automotive Sensor Protection | Industrial Power Supply Input |
|---|---|
|
Use Scenario: Protecting CAN transceiver I/O pins and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between sensor line and ground, activated within <1 ns to clamp spikes above 9.1 V. Use Value: Prevents latch-up or permanent damage to 5 V or 3.3 V interface ICs while maintaining signal integrity due to low leakage (<25 µA at 7.78 V). |
Use Scenario: Safeguarding AC-DC and DC-DC converter inputs against 600 V/100 A lightning surges per IEC 61000-4-5 (Level 3). IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V or 48 V bus, absorbing 600 W pulses without degradation over >100,000 events. Use Value: Eliminates need for series fusing or additional MOV stages, reducing BOM count and board space in DIN-rail mounted PLC power modules. |
| Consumer Device USB Port | Telecom Line Interface |
|
Use Scenario: ESD and surge protection for USB 2.0 data lines and VBUS in portable medical monitors and point-of-sale terminals. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS rail only, coordinated with bidirectional TVS on D+/D− to meet IEC 61000-4-2 Level 4 (±15 kV air). Use Value: Maintains <1 nA leakage at 5 V, preventing battery drain in always-on devices while surviving repeated ±8 kV contact discharge events. |
Use Scenario: Front-end protection of Ethernet PHY and PoE injectors against induced surges from nearby power cables in building automation gateways. IC Role / Device Role / Timing Role: Standoff-rated TVS on 48 V PoE supply line, clamping to 44.8 V before upstream DC-DC controller enters overvoltage shutdown. Use Value: Enables compliance with GR-1089-CORE telecom surge immunity requirements without derating or parallel staging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Same SMB package, 9.0 V VBR, 600 W PPPM, but not AEC-Q101 qualified; higher VC = 14.4 V at 35.3 A | Limited to commercial/industrial use; lacks automotive qualification and high-temp reliability validation | Select SMAJ9.0A only for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
| TPSMB9.1AHM3/5BT | Identical electrical specs and AEC-Q101 qualification; HM3 suffix adds halogen-free molding compound (vs. HE3's RoHS-only) | Required for strict environmental compliance (e.g., EU automotive Tier 1s mandating halogen-free materials) | Choose TPSMB9.1AHM3/5BT when halogen-free content is contractually required; otherwise HE3 suffices |
Compared with SMAJ9.0A and TPSMB9.1AHM3/5BT, the TPSMB9.1A1BHE3/5BT offers identical surge performance and automotive qualification in a RoHS-compliant package, making it optimal for mainstream automotive electronics where halogen-free is optional but AEC-Q101 is mandatory.
Availability
TPSMB9.1A1BHE3/5BT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial power supply inputs, and telecom line protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TPSMB9.1A1BHE3/5BT 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The TPSMB series is part of Vishay's PAR® (Protected Anisotropic Rectifier) platform, engineered specifically for robust transient suppression in harsh environments where temperature stability, surge endurance, and qualification rigor are non-negotiable.
FAQ
What is the exact breakdown voltage tolerance for TPSMB9.1A1BHE3/5BT?
The TPSMB9.1A1BHE3/5BT has a guaranteed breakdown voltage range of 8.65 V to 9.55 V at 1 mA test current (VBR min/typ/max), with nominal 9.10 V. This ±5 % tolerance ensures consistent clamping behavior across production lots and allows precise margining against protected IC's maximum voltage ratings without overdesign.
Is TPSMB9.1A1BHE3/5BT suitable for bidirectional signal line protection?
No - the TPSMB9.1A1BHE3/5BT is unidirectional only, with cathode-band polarity. It must be used on DC-biased lines such as power rails or single-ended analog outputs. For bidirectional protection (e.g., RS-485, USB D+/D−), a separate bidirectional TVS like SMBJ9.0CA is required; mixing polarities risks failure.
Does TPSMB9.1A1BHE3/5BT require derating at elevated ambient temperatures?
Yes - the peak pulse power of TPSMB9.1A1BHE3/5BT must be derated linearly above 25 °C per Figure 2 in the datasheet, reaching ~50 % of 600 W at 125 °C ambient. Designers must verify clamping performance at worst-case operating temperature using the published derating curve to ensure safe operation in under-hood or enclosed industrial enclosures.
What does the "1B" in TPSMB9.1A1BHE3/5BT signify?
The "1B" denotes the revision code per Vishay's ordering convention - indicating the specific manufacturing revision of the die and process. It appears in the full orderable part number to track process changes affecting reliability or parametric consistency; all TPSMB9.1A1BHE3/5BT units share identical electrical specs and qualification status as defined in Document Number 88406 Rev. 23-Jan-2024.
Can TPSMB9.1A1BHE3/5BT be used in place of TPSMB9.1AHE3/5BT?
Yes - TPSMB9.1A1BHE3/5BT is a direct revision update of TPSMB9.1AHE3/5BT with identical electrical characteristics, package, and qualification. The "1B" revision reflects minor internal process improvements; no design or layout changes are needed, and both are fully interchangeable in production and field replacement.
TPSMB9.1A1BHE3/5BT 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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 44.8A
- 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)
TPSMB9.1A1BHE3/5BT FAQ
1.How can I place an order for TPSMB9.1A1BHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB9.1A1BHE3/5BT 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 TPSMB9.1A1BHE3/5BT reliable?
The price and inventory of TPSMB9.1A1BHE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB9.1A1BHE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB9.1A1BHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB9.1A1BHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB9.1A1BHE3/5BT?
TPSMB9.1A1BHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB9.1A1BHE3/5BT 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 TPSMB9.1A1BHE3/5BT?
For technical support, including TPSMB9.1A1BHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB9.1A1BHE3/5BT requirements.
6.How does Aetrix verify that TPSMB9.1A1BHE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB9.1A1BHE3/5BT 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 TPSMB9.1A1BHE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB9.1A1BHE3/5BT?
All TPSMB9.1A1BHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB9.1A1BHE3/5BT, 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 TPSMB9.1A1BHE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB9.1A1BHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB9.1A1BHE3/5BT Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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