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Vishay General Semiconductor - Diodes Division TPSMB9.1AHE3/5BT
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- Part No.:
- TPSMB9.1AHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB9.1AHE3/5BT.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,668
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Product details
Overview
TPSMB9.1AHE3/5BT 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 - ideal for automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the TPSMB9.1AHE3/5BT datasheet, TPSMB9.1AHE3/5BT pinout, TPSMB9.1AHE3/5BT application, or TPSMB9.1AHE3/5BT equivalent, this page delivers verified electrical specs, SMB (DO-214AA) package details, AEC-Q101 qualification status, thermal derating curves, and real-world use cases in automotive and industrial environments - all grounded in Vishay Document #88406 (Rev. 23-Jan-2024).
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation for stable clamping under high-temperature stress. Its unidirectional polarity and 10/1000 µs waveform response enable precise overvoltage suppression without forward conduction during normal operation.
The device meets MSL Level 1 per J-STD-020 (260 °C peak reflow), supports 75 A non-repetitive surge current (8.3 ms half-sine), and exhibits low incremental surge resistance - critical for protecting MOSFET gates and IC inputs against fast-rising transients in automotive ECUs and industrial PLCs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1 mA test current - defines precise clamping initiation threshold for reliable overvoltage detection |
| Stand-off Voltage VWM | 7.78 V maximum - ensures no leakage or false triggering below system operating voltage |
| Clamping Voltage VC | 44.8 V at 13.4 A IPPM - limits downstream voltage stress during 600 W transient events |
| Peak Pulse Power PPPM | 600 W (10/1000 µs waveform) - sustains high-energy surges common in automotive load-dump and inductive switching |
| Junction Temperature Range | −65 °C to +185 °C - enables deployment in under-hood automotive and high-ambient industrial environments |
| AEC-Q101 Qualified | Yes (HE3 suffix) - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | SMB (DO-214AA) - industry-standard SMD footprint with 0.220" × 0.205" outline and matte tin-plated leads |
Pinout & Package
TPSMB9.1AHE3/5BT is housed in an SMB (DO-214AA) surface-mount package with two terminals: cathode (marked by color band) and anode. The package complies with UL 94 V-0 flammability rating and supports soldering per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VIN exceeds VBR |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature junction capability | TJ max = +185 °C - eliminates derating concerns in engine control modules and motor drives |
| Low clamping ratio (VC/VBR) | 44.8 V / 9.1 V ≈ 4.9 - minimizes overvoltage margin while maintaining robust surge handling |
| Fast response time | < 1.0 ps typical - activates before sensitive CMOS inputs or gate drivers are damaged |
| AEC-Q101 qualification (HE3) | Validated for automotive applications including temperature cycling, HTRB, and ESD testing |
| MSL Level 1 moisture sensitivity | No floor life limitation - supports standard SMT assembly without dry-pack or baking requirements |
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 in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground to shunt transients before reaching IC pins. Use Value: Prevents latch-up and gate oxide damage in 5 V/12 V sensor interfaces while maintaining signal integrity during normal operation. |
Use Scenario: Safeguarding RS-485/RS-232 communication ports and digital I/O lines in programmable logic controllers (PLCs) exposed to EFT and surge per IEC 61000-4-4/5. IC Role / Device Role / Timing Role: Standoff-clamp TVS positioned at connector entry point to absorb repetitive fast transients without degrading data rate. Use Value: Enables >100,000 surge cycles at 4 kV contact discharge without parameter shift, ensuring long-term field reliability. |
| Power Rail Transient Suppression | MOSFET Gate Protection |
|
Use Scenario: Clamping 12 V/24 V supply rails in automotive body control modules against battery reverse connection and alternator load dump. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor to limit rail voltage excursion during 100 V/400 ms transients. Use Value: Limits rail overshoot to ≤44.8 V, preventing overvoltage shutdown of PMICs and microcontrollers downstream. |
Use Scenario: Shielding N-channel MOSFET gates from Miller-induced voltage spikes during high-di/dt switching in motor drivers and DC-DC converters. IC Role / Device Role / Timing Role: Low-capacitance TVS placed between gate and source to clamp dv/dt-induced ringing without slowing turn-on/off. Use Value: Suppresses gate voltage excursions beyond ±20 V, eliminating unintended turn-on and gate oxide stress. |
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 | Lower PPPM (400 W), higher VC (15.4 V at 12.5 A), same SMB package | Not AEC-Q101 qualified; suitable for commercial-grade consumer electronics only | Select SMAJ9.0A only if automotive qualification and 600 W surge margin are not required. |
| SMCJ9.0A | Higher PPPM (1500 W), larger SMC (DO-214AB) package, VC = 14.4 V at 65.2 A | Requires PCB area increase (~30% larger footprint); better for high-energy industrial surges | Choose SMCJ9.0A when system-level surge tests exceed IEC 61000-4-5 Level 4 (4 kV/2 Ω) and layout allows SMC footprint. |
Compared with SMAJ9.0A and SMCJ9.0A, the TPSMB9.1AHE3/5BT uniquely balances AEC-Q101 compliance, 600 W surge capacity, and SMB footprint - making it optimal for space-constrained automotive modules where qualification and thermal robustness are mandatory.
Availability
TPSMB9.1AHE3/5BT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and MOSFET gate transient suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMB9.1AHE3/5BT 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, rectifiers, and protection devices for automotive, industrial, and computing markets.
The TPSMB9.1AHE3/5BT belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for high-temperature stability and AEC-Q101-compliant transient suppression in harsh automotive and industrial environments.
FAQ
What is the exact breakdown voltage range for TPSMB9.1AHE3/5BT?
The TPSMB9.1AHE3/5BT has a guaranteed breakdown voltage (VBR) range of 8.65 V to 9.55 V at 1 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and temperature extremes - a key requirement for automotive safety-critical circuits where predictable overvoltage response is mandatory. The nominal value is 9.10 V.
Is TPSMB9.1AHE3/5BT qualified for automotive applications?
Yes, TPSMB9.1AHE3/5BT is AEC-Q101 qualified, as confirmed by its HE3 suffix and explicit listing in Vishay Document #88406. It undergoes rigorous stress testing including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge - meeting automotive-grade reliability standards for under-hood and chassis-mounted electronics. This qualification applies specifically to the HE3 variant, not generic SMB packages.
What is the clamping voltage of TPSMB9.1AHE3/5BT at its rated surge current?
The TPSMB9.1AHE3/5BT clamps to a maximum of 44.8 V at 13.4 A peak pulse current (IPPM), measured using the standardized 10/1000 µs waveform. This clamping voltage directly determines the maximum stress imposed on downstream components during transient events - enabling designers to verify that protected ICs remain within their absolute maximum ratings even during worst-case surges.
Does TPSMB9.1AHE3/5BT have unidirectional or bidirectional polarity?
TPSMB9.1AHE3/5BT is unidirectional only, as explicitly stated in the Vishay datasheet. Its cathode is marked by a color band, and it conducts surge current only when the anode-to-cathode voltage exceeds the breakdown threshold. This configuration is optimal for DC-biased lines like automotive power rails and sensor supply lines, where reverse conduction is neither needed nor desired.
What package type and mounting specifications does TPSMB9.1AHE3/5BT use?
TPSMB9.1AHE3/5BT uses the SMB (DO-214AA) surface-mount package with dimensions of 0.220" × 0.205" (5.59 mm × 5.21 mm). It features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets MSL Level 1 per J-STD-020 - allowing standard reflow profiles with 260 °C peak temperature and no floor-life restrictions. Mounting pad layout is specified in the datasheet Figure on page 4.
TPSMB9.1AHE3/5BT 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 (SMBJ)
TPSMB9.1AHE3/5BT FAQ
1.How can I place an order for TPSMB9.1AHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB9.1AHE3/5BT 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 TPSMB9.1AHE3/5BT reliable?
The price and inventory of TPSMB9.1AHE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB9.1AHE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB9.1AHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB9.1AHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB9.1AHE3/5BT?
TPSMB9.1AHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB9.1AHE3/5BT 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 TPSMB9.1AHE3/5BT?
For technical support, including TPSMB9.1AHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB9.1AHE3/5BT requirements.
6.How does Aetrix verify that TPSMB9.1AHE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB9.1AHE3/5BT 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 TPSMB9.1AHE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB9.1AHE3/5BT?
All TPSMB9.1AHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB9.1AHE3/5BT, 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 TPSMB9.1AHE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB9.1AHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB9.1AHE3/5BT Tags
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