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Vishay General Semiconductor - Diodes Division TPSMB9.1AHM3_A/H
- Part No.:
- TPSMB9.1AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB9.1AHM3_A/H.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,654
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Product details
Overview
TPSMB9.1AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive and lightning-induced transients on signal lines and power rails. 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 surge current, and operates up to +185 °C junction temperature - deployed in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the TPSMB9.1AHM3_A/H datasheet, TPSMB9.1AHM3_A/H pinout, TPSMB9.1AHM3_A/H application, or TPSMB9.1AHM3_A/H equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, TJ = 185 °C capability, and verified clamping performance under 10/1000 µs surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional configuration provides forward conduction only during reverse overvoltage events, with fast response time enabling sub-nanosecond clamping onset.
The device is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 0.060 %/°C temperature coefficient of VBR, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak - confirming suitability for automated SMT assembly in harsh-environment automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1 mA test current - defines precise voltage threshold where clamping initiates |
| Stand-off Voltage VWM | 7.78 V maximum - ensures no leakage conduction during normal 5 V–7.5 V system operation |
| Clamping Voltage VC | 44.8 V at 13.4 A IPPM (10/1000 µs) - limits downstream IC stress to safe levels during surge |
| Peak Pulse Power PPPM | 600 W (10/1000 µs waveform, 0.01% duty cycle) - sustains repeated transient suppression without degradation |
| Junction Temperature Range | −65 °C to +185 °C - enables deployment in engine bay, powertrain, and industrial control enclosures |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 0.220" x 0.130" footprint and matte tin leads |
Pinout & Package
TPSMB9.1AHM3_A/H is housed in an SMB (DO-214AA) surface-mount package with cathode indicated by a color band. The device has two terminals: anode and cathode - mounted on 5.0 mm × 5.0 mm copper pads per terminal for optimal thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts reverse surge current to ground reference during overvoltage |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current loop |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design reduces leakage drift and improves long-term stability at TJ = 150 °C |
| High-temperature operation | TJ max = +185 °C supports placement near heat sources (e.g., power MOSFETs, motor drivers) without derating |
| Low clamping ratio | VC/VBR ≈ 4.9 - delivers tight voltage limiting relative to breakdown, minimizing margin overhead in protected circuits |
| Halogen-free & RoHS | HM3 suffix confirms halogen-free molding compound and full RoHS compliance per JEDEC J-STD-609 |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - eliminates bake requirements before reflow soldering |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching sensitive input stages. Use Value: Maintains VWM = 7.78 V margin below 12 V nominal supply while clamping to 44.8 V - preserving signal integrity and preventing latch-up in 3.3 V/5 V receivers. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-mode protector on 24 V DC input channels, absorbing repetitive 600 W transients without degradation. Use Value: 185 °C TJ rating allows direct mounting on DIN-rail enclosures with ambient >85 °C; AEC-Q101 qualification adds confidence in long-life deployments. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side transient suppression on USB-C PD adapter output rails exposed to hot-plug and cable ESD events. IC Role / Device Role / Timing Role: Fast-response clamping element across VBUS and GND, activated within <1 ns of overvoltage onset. Use Value: 13.4 A IPPM and 44.8 V VC limit downstream buck converter stress to <50 V - avoiding overvoltage shutdown and ensuring continuous delivery. |
Use Scenario: Front-end protection for Ethernet PHYs and POTS line interface units subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS on differential pairs (e.g., TX+/TX−), referenced to isolated ground planes. Use Value: SMB footprint enables dense layout on line card edge connectors; 0.060 %/°C αT ensures stable clamping across −40 °C to +85 °C operating range. |
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 | 9.0 V VBR min (vs. 8.65 V), same SMB package, 600 W PPPM, but not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial use only | Select when AEC-Q101 is not required and tighter VBR tolerance is acceptable |
| TPSMB9.1AHE3_A/H | Identical electrical specs, same SMB package, but HE3 suffix indicates standard RoHS (not halogen-free) | Same automotive use case, but HM3 version preferred where halogen-free compliance is mandated (e.g., EU automotive Tier 1) | Choose TPSMB9.1AHM3_A/H when halogen-free material specification is contractually required |
Compared with SMBJ9.0A and TPSMB9.1AHE3_A/H, the TPSMB9.1AHM3_A/H uniquely combines AEC-Q101 qualification, halogen-free construction, and 185 °C junction rating - making it the only option among the three qualified for under-hood automotive sensor nodes requiring both environmental and regulatory compliance.
Availability
TPSMB9.1AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line card surge suppression requiring stable component supply across multi-year production cycles.
Supply support for TPSMB9.1AHM3_A/H 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, rectifiers, and protection devices for demanding environments.
The TPSMB series was engineered specifically for automotive and industrial transient suppression, emphasizing high-temperature stability, AEC-Q101 compliance, and robust surge handling in compact SMB packages.
FAQ
What is the clamping voltage of the TPSMB9.1AHM3_A/H at its rated peak pulse current?
The TPSMB9.1AHM3_A/H clamps to 44.8 V at its specified peak pulse current of 13.4 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 23-Jan-2024. The clamping voltage directly determines the maximum stress imposed on downstream circuitry during surge events, making it critical for validating protection margins in designs using the TPSMB9.1AHM3_A/H.
Is the TPSMB9.1AHM3_A/H suitable for automotive applications?
Yes, the TPSMB9.1AHM3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix. It supports junction temperatures up to +185 °C and meets MSL Level 1 reflow requirements - enabling reliable deployment in engine control units, body electronics, and ADAS sensor modules. The TPSMB9.1AHM3_A/H data sheet confirms qualification testing including temperature cycling, high-temperature reverse bias, and ESD robustness per AEC-Q101 Rev G.
What does the "HM3" suffix indicate in TPSMB9.1AHM3_A/H?
The "HM3" suffix in TPSMB9.1AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Unlike the HE3 variant, HM3 specifies bromine- and chlorine-free molding compounds meeting JEDEC J-STD-609A Class 1 requirements. This makes the TPSMB9.1AHM3_A/H compliant with stringent environmental mandates in European and Tier 1 automotive supply chains - a distinction clearly documented in the Vishay ordering information table.
How does the temperature coefficient affect the TPSMB9.1AHM3_A/H breakdown voltage?
The TPSMB9.1AHM3_A/H has a typical temperature coefficient of VBR (αT) of +0.060 %/°C. This means VBR increases linearly with junction temperature: for example, at TJ = 125 °C, VBR rises by approximately 0.6 V above its 25 °C value. Designers must account for this shift when setting safety margins in high-ambient applications - a calculation method is provided in the Vishay datasheet footnote (3) for the TPSMB9.1AHM3_A/H.
What is the maximum reverse leakage current of the TPSMB9.1AHM3_A/H at its stand-off voltage?
At VWM = 7.78 V and TA = 25 °C, the TPSMB9.1AHM3_A/H exhibits a maximum reverse leakage current (IR) of 25 µA. At elevated temperature (TJ = 150 °C), leakage increases to 50 µA - still well below thresholds that would disrupt low-power sensor biasing or microcontroller input detection. This low leakage ensures minimal power loss and signal interference in always-on monitoring circuits using the TPSMB9.1AHM3_A/H.
TPSMB9.1AHM3_A/H 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/H FAQ
1.How can I place an order for TPSMB9.1AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB9.1AHM3_A/H 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/H reliable?
The price and inventory of TPSMB9.1AHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for TPSMB9.1AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB9.1AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB9.1AHM3_A/H?
TPSMB9.1AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB9.1AHM3_A/H 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/H?
For technical support, including TPSMB9.1AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB9.1AHM3_A/H requirements.
6.How does Aetrix verify that TPSMB9.1AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB9.1AHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of TPSMB9.1AHM3_A/H?
All TPSMB9.1AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB9.1AHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for TPSMB9.1AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB9.1AHM3_A/H Tags
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