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Vishay General Semiconductor - Diodes Division TPSMB9.1HE3/52T
- Part No.:
- TPSMB9.1HE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB9.1HE3/52T.pdf
- Description:
- TVS DIODE 7.37VWM 13.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,189
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Product details
Overview
TPSMB9.1HE3/52T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode 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, and operates up to +185 °C junction temperature - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB9.1HE3/52T datasheet, TPSMB9.1HE3/52T pinout, TPSMB9.1HE3/52T application, or TPSMB9.1HE3/52T equivalent, this page delivers verified electrical parameters, SMB (DO-214AA) package details, AEC-Q101 qualification status, thermal derating curves, and direct alternatives for high-reliability overvoltage protection design.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and fast-rising transients. Its unidirectional polarity and cathode-band marking align with standard SMB PCB layout conventions.
The device is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), supports MSL Level 1 reflow (260 °C peak), and exhibits a +0.060 %/°C temperature coefficient of VBR, allowing predictable clamping behavior across -65 °C to +185 °C operating range.
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 under transient stress |
| Stand-off Voltage VWM | 7.78 V - ensures no conduction during normal 5 V–7.5 V rail operation, minimizing leakage |
| Peak Pulse Power PPPM | 600 W (10/1000 µs waveform) - sustains single high-energy surges without failure |
| Maximum Clamping Voltage VC | 13.4 V at 44.8 A IPPM - limits downstream IC voltage exposure during worst-case surge |
| Junction Temperature Range | -65 °C to +185 °C - enables use in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress test requirements |
| Package | SMB (DO-214AA) - industry-standard SMD footprint with 0.220" x 0.130" body and matte tin leads |
Pinout & Package
TPSMB9.1HE3/52T is housed in the SMB (DO-214AA) surface-mount package: 0.220" × 0.130" body, cathode indicated by a color band, matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line; conducts when transient exceeds VBR relative to anode |
| Anode | Cathode of internal PN junction | Typically tied to ground or lower-potential rail; completes clamping path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C Junction Rating | Enables deployment in high-temperature engine control units and power converters without thermal derating penalties |
| 600 W Peak Pulse Power | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 12 V systems with margin |
| Low Clamping Ratio (VC/VBR ≈ 1.47) | Minimizes voltage overshoot during clamping - critical for protecting 5 V and 3.3 V logic interfaces |
| AEC-Q101 Qualification (HE3 suffix) | Confirms robustness against temperature cycling, humidity, and mechanical shock required for automotive ECUs |
| MSL Level 1 Reflow Compatibility | Supports standard lead-free reflow profiles up to 260 °C peak without delamination or parametric shift |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs from load-dump transients in vehicle body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between VIN and GND, activated within <1 ns of overvoltage onset. Use Value: Limits peak voltage to ≤13.4 V during 35 V/100 ms load dump, preventing MCU brownout or latch-up. |
Use Scenario: Safeguarding analog outputs of pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting transient energy from 4–20 mA loop wiring induced by nearby motor switching. Use Value: Maintains signal integrity below 13.4 V clamping level while adding <1 pF junction capacitance at 0 V bias. |
| Consumer USB Port ESD Suppression | Telecom DC Power Input Surge Guard |
|
Use Scenario: Secondary-level ESD protection on VBUS line of USB-C ports in portable docking stations. IC Role / Device Role / Timing Role: Stand-off device blocking normal 5 V operation but clamping ±15 kV HBM ESD events per IEC 61000-4-2. Use Value: Delivers sub-13.4 V clamping at 44.8 A peak current, preserving USB PD negotiation integrity. |
Use Scenario: Primary surge suppression on -48 V DC telecom power feeds entering base station cabinets. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, absorbing 600 W lightning-induced surges on telecom plant infrastructure. Use Value: Withstands repetitive 10/1000 µs surges at 0.01% duty cycle without degradation in harsh outdoor environments. |
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 25.6 A), same SMB package | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom |
| TPSMB9.1AHM3 | Halogen-free molding compound; identical electrical specs and AEC-Q101 qualification | Required for RoHS-compliant, halogen-free BOMs in EU/Asia automotive programs | Choose HM3 suffix where material compliance mandates exceed standard HE3 environmental requirements |
Compared with SMAJ9.0A and TPSMB9.1AHM3, the TPSMB9.1HE3/52T provides superior surge handling margin and certified automotive reliability, while maintaining full SMB footprint compatibility - making it optimal for safety-critical 12 V systems where thermal stability and long-term parametric consistency are mandatory.
Availability
TPSMB9.1HE3/52T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer USB power delivery systems, and telecom DC power input stages requiring stable component supply and AEC-Q101 assurance.
Supply support for TPSMB9.1HE3/52T 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 engineered for automotive, industrial, and computing applications.
The TPSMB series belongs to Vishay's PAR® (Protection and Regulation) transient voltage suppressor family, developed specifically for robust, high-temperature-stable overvoltage protection in demanding automotive and industrial power systems.
FAQ
What is the exact breakdown voltage range for TPSMB9.1HE3/52T?
The TPSMB9.1HE3/52T 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 standards. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in 9 V nominal systems. The nominal VBR is 9.10 V, and the device maintains this specification across its full -65 °C to +185 °C operating temperature range.
Is TPSMB9.1HE3/52T qualified for automotive applications?
Yes, TPSMB9.1HE3/52T is AEC-Q101 qualified - confirmed by Vishay's official documentation and ordering code suffix "HE3". This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock, validating its suitability for under-hood and chassis-mounted automotive electronics. The device also meets MSL Level 1 reflow requirements, supporting automated assembly in automotive manufacturing lines.
What is the maximum clamping voltage of TPSMB9.1HE3/52T and at what current does it occur?
The TPSMB9.1HE3/52T achieves a maximum clamping voltage (VC) of 13.4 V at a peak pulse current (IPPM) of 44.8 A, tested with the standardized 10/1000 µs waveform. This clamping performance is specified at TA = 25 °C and reflects worst-case conduction under surge conditions. The low VC/VBR ratio (~1.47) confirms efficient voltage limiting essential for protecting downstream 5 V and 3.3 V ICs.
Does TPSMB9.1HE3/52T have bidirectional polarity?
No, TPSMB9.1HE3/52T is unidirectional only - clearly stated in Vishay's datasheet under FEATURES and PRIMARY CHARACTERISTICS. It conducts only when the cathode is positive relative to the anode, making it suitable for DC rail protection where reverse voltage is not expected. For AC or bipolar transient protection, a bidirectional variant (e.g., TPSMB9.1CA) would be required - but that part number is not offered in the HE3/52T configuration.
What package type and dimensions does TPSMB9.1HE3/52T use?
TPSMB9.1HE3/52T uses the SMB (DO-214AA) surface-mount package: body size 0.220" × 0.130" (5.59 mm × 3.30 mm), with cathode identified by a visible color band. Lead finish is matte tin, compliant with J-STD-002 solderability and JESD22-B102. The package supports standard reflow profiles and is compatible with automated pick-and-place equipment used in high-volume automotive and industrial PCB assembly.
TPSMB9.1HE3/52T 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)
TPSMB9.1HE3/52T FAQ
1.How can I place an order for TPSMB9.1HE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB9.1HE3/52T 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 TPSMB9.1HE3/52T reliable?
The price and inventory of TPSMB9.1HE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB9.1HE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB9.1HE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB9.1HE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB9.1HE3/52T?
TPSMB9.1HE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB9.1HE3/52T 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 TPSMB9.1HE3/52T?
For technical support, including TPSMB9.1HE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB9.1HE3/52T requirements.
6.How does Aetrix verify that TPSMB9.1HE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB9.1HE3/52T 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 TPSMB9.1HE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB9.1HE3/52T?
All TPSMB9.1HE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB9.1HE3/52T, 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 TPSMB9.1HE3/52T part is unused and in its original packaging.
Return procedure for TPSMB9.1HE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB9.1HE3/52T Tags
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