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Vishay General Semiconductor - Diodes Division TPSMB9.1AHM3_A/I
- Part No.:
- TPSMB9.1AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB9.1AHM3_A/I.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,380
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Product details
Overview
TPSMB9.1AHM3_A/I 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), 44.8 V clamping voltage at 13.4 A peak current, and operates up to +185 °C junction temperature - deployed in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the TPSMB9.1AHM3_A/I datasheet, TPSMB9.1AHM3_A/I pinout, TPSMB9.1AHM3_A/I application, or TPSMB9.1AHM3_A/I equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, 13.4 A IPPM surge handling, and ±0.060 %/°C VBR temperature coefficient for thermal stability in high-reliability designs.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and fast-rising transients before downstream ICs are damaged. Its 185 °C maximum junction temperature and MSL Level 1 rating support reflow soldering at 260 °C and operation in under-hood automotive environments.
The device is strictly unidirectional with cathode band marking, optimized for DC-biased rail protection where reverse conduction must be blocked. Clamping performance is specified per ANSI/IEEE C62.35 using 10/1000 µs waveform, and derating curves confirm stable operation above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 8.65 / 9.10 / 9.55 V - precise breakdown threshold ensures reliable triggering without false trips during normal 7.78 V DC operation |
| VWM | 7.78 V - maximum continuous reverse working voltage compatible with 5 V–9 V logic and sensor supply rails |
| VC @ IPPM | 44.8 V - clamps 13.4 A surge to safe level below typical 48 V system damage thresholds |
| PPPM | 600 W - handles repetitive 10/1000 µs transients at 0.01 % duty cycle in automotive load-dump scenarios |
| TJ max | +185 °C - supports placement near hot components (e.g., power MOSFETs, DC-DC inductors) without derating |
| αT | +0.060 %/°C - predictable VBR drift enables accurate overvoltage margin design across full temperature range |
| AEC-Q101 | Qualified - meets stress test requirements for automotive electronic modules per JESD22-A108 |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or low-side return path; defines unidirectional blocking direction |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 12 V rail); clamps transients to ground when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Reduces leakage drift and improves long-term reliability under high-temperature bias stress |
| MSL Level 1 | Enables single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision |
| Halogen-free construction | Meets automotive and industrial environmental compliance standards (e.g., JIG-101) |
| 10/1000 µs waveform rating | Validated for real-world inductive switch-off and lightning surge profiles per IEC 61000-4-5 |
Applications
| Automotive Sensor Protection | Industrial Power Input Stage |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor supply rail and chassis ground to clamp transients before they reach LDOs or ADC inputs. Use Value: Prevents latch-up or permanent damage in AEC-Q100 qualified ICs by limiting voltage to ≤44.8 V during 13.4 A surges. | Use Scenario: Safeguarding 24 V DC input of PLC I/O modules against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power entry, coordinated with upstream fuse and downstream π-filter. Use Value: Maintains system uptime by absorbing 600 W surges without degradation, validated for >1000 cycles at 0.01 % duty. |
| Consumer USB-C Port Protection | Telecom Base Station DC Feeds |
Use Scenario: Secondary surge protection on VBUS line of USB-C PD ports subjected to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Fast-response clamp after primary common-mode choke, shunting differential-mode transients to ground. Use Value: Limits VBUS overshoot to <45 V during 8 kV ESD (IEC 61000-4-2), preserving USB-PD controller integrity. | Use Scenario: Input rail protection for remote radio units powered via 48 V DC over long outdoor cables susceptible to lightning coupling. IC Role / Device Role / Timing Role: First-line TVS on DC feed before DC-DC converter, sized to handle partial lightning energy per IEC 61643-21. Use Value: Withstands repeated 10/1000 µs surges up to 13.4 A while maintaining VWM = 7.78 V compatibility with telecom -48 V nominal systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | VBR = 9.0 V min, VC = 14.4 V @ 41.7 A; same SMB package but lower clamping voltage and higher IPPM | Higher surge current capacity suits 12 V automotive systems with larger energy transients | Select when clamping voltage headroom is tighter and peak surge current exceeds 13.4 A |
| TPSMB9.1AHE3_A/I | Identical electrical specs but RoHS-compliant with lead-free plating only (not halogen-free); no AEC-Q101 qualification | Acceptable for commercial/industrial use where automotive qualification is not required | Choose for cost-sensitive non-automotive designs where halogen-free and AEC-Q101 are not mandated |
Compared with SMBJ9.0A and TPSMB9.1AHE3_A/I, the TPSMB9.1AHM3_A/I uniquely combines halogen-free construction, AEC-Q101 qualification, and precise 9.1 V breakdown - making it the preferred choice for Tier-1 automotive modules requiring both environmental compliance and functional safety validation.
Availability
TPSMB9.1AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power input stages, consumer USB-C port hardening, and telecom DC feed protection requiring stable component supply across extended temperature and lifecycle demands.
Supply support for TPSMB9.1AHM3_A/I 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 high-reliability, high-temperature, and automotive-grade solutions.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for robust, high-temperature-stable clamping in automotive and industrial environments where AEC-Q101 qualification and 185 °C operation are mandatory.
FAQ
What is the breakdown voltage tolerance of the TPSMB9.1AHM3_A/I?
The TPSMB9.1AHM3_A/I has a guaranteed breakdown voltage range of 8.65 V (min) to 9.55 V (max) at 1 mA test current, with a typical value of 9.10 V. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable overvoltage margining in 9 V nominal systems. The TPSMB9.1AHM3_A/I datasheet specifies this parameter under standard test conditions per ANSI/IEEE C62.35.
Is the TPSMB9.1AHM3_A/I suitable for automotive applications?
Yes, the TPSMB9.1AHM3_A/I is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature, making it suitable for under-hood and body-control module applications. Its halogen-free, RoHS-compliant construction and MSL Level 1 rating further align with automotive manufacturing requirements. The TPSMB9.1AHM3_A/I is explicitly designated for automotive use in Vishay's ordering nomenclature (HM3 suffix).
What is the clamping voltage of the TPSMB9.1AHM3_A/I at its rated peak pulse current?
The TPSMB9.1AHM3_A/I clamps to a maximum of 44.8 V at its rated peak pulse current of 13.4 A (10/1000 µs waveform). This clamping voltage is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The TPSMB9.1AHM3_A/I maintains this performance across its full operating temperature range.
Does the TPSMB9.1AHM3_A/I have bidirectional polarity?
No, the TPSMB9.1AHM3_A/I is unidirectional only, with cathode marked by a color band. It blocks reverse voltage up to 7.78 V and clamps positive transients on the cathode side. For AC or bipolar transient protection, a separate bidirectional device such as the SMBJ9.0CA would be required. The TPSMB9.1AHM3_A/I datasheet explicitly states "Available in unidirectional polarity only."
What package type does the TPSMB9.1AHM3_A/I use, and what are its mounting requirements?
The TPSMB9.1AHM3_A/I uses the SMB (DO-214AA) surface-mount package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Recommended mounting uses 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to meet thermal and surge current ratings. The TPSMB9.1AHM3_A/I package outline and pad layout are documented in Vishay's datasheet Figure 4.
TPSMB9.1AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
TPSMB9.1AHM3_A/I FAQ
1.How can I place an order for TPSMB9.1AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB9.1AHM3_A/I 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 TPSMB9.1AHM3_A/I reliable?
The price and inventory of TPSMB9.1AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB9.1AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB9.1AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB9.1AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB9.1AHM3_A/I?
TPSMB9.1AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB9.1AHM3_A/I 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 TPSMB9.1AHM3_A/I?
For technical support, including TPSMB9.1AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB9.1AHM3_A/I requirements.
6.How does Aetrix verify that TPSMB9.1AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB9.1AHM3_A/I 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 TPSMB9.1AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB9.1AHM3_A/I?
All TPSMB9.1AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB9.1AHM3_A/I, 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 TPSMB9.1AHM3_A/I part is unused and in its original packaging.
Return procedure for TPSMB9.1AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB9.1AHM3_A/I 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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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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