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Vishay General Semiconductor - Diodes Division TPSMP27HM3/85A
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- Part No.:
- TPSMP27HM3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP27HM3/85A.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,000
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Product details
Overview
TPSMP27HM3/85A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, designed for high-reliability automotive and industrial circuit protection. It features a 24.3 V to 29.7 V breakdown voltage (VBR), 39.1 V clamping voltage (VC) at 10.2 A peak pulse current, 400 W peak pulse power rating, and AEC-Q101 qualification for under-hood electronics.
For engineers reviewing the TPSMP27HM3/85A datasheet, TPSMP27HM3/85A pinout, TPSMP27HM3/85A application, or TPSMP27HM3/85A equivalent, key selection criteria include unidirectional polarity, 1.0 mm profile height, MSL Level 1 moisture sensitivity, 185 °C junction temperature capability, and compatibility with automated SMT placement on FR-4 PCBs.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and lightning-induced transients per IEC 61000-4-2 and ISO 7637-2. Its unidirectional configuration provides forward conduction path only during overvoltage events, supporting DC-biased signal and power line protection.
The device operates across -65 °C to +185 °C junction temperature range and delivers stable clamping performance up to 150 °C ambient, with 0.100 %/°C temperature coefficient of VBR. It is rated for 40 A non-repetitive forward surge current (IFSM) and dissipates 2.5 W continuously at 75 °C on infinite heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 24.3 V / 29.7 V - defines minimum and maximum voltage at which device enters avalanche breakdown under 1 mA test current |
| VC @ IPPM | 39.1 V @ 10.2 A - clamping voltage during 10/1000 μs surge, limiting downstream voltage stress |
| PPPM | 400 W - peak pulse power handling capacity for transient suppression without failure |
| VWM | 21.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| TJ max. | +185 °C - enables use in high-temperature automotive environments such as engine control units |
| Package | DO-220AA (SMP) - ultra-low-profile surface-mount package with 1.0 mm typical height and matte tin-plated leads |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
TPSMP27HM3/85A uses the DO-220AA (SMP) package: a two-terminal, unidirectional surface-mount device with cathode indicated by a color band. The package measures 3.61 mm × 1.88 mm × 1.0 mm (L × W × H), features UL 94 V-0 molding compound, and supports J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of protected line; conducts during reverse-transient clamp |
| Cathode | Reverse-biased terminal | Marked with color band; connected to higher-potential side (e.g., VCC, signal line); defines unidirectional polarity |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier technology | Enables precise VBR tolerance and stable clamping over temperature and lifetime |
| 185 °C junction temperature rating | Supports deployment in under-hood automotive modules without derating at elevated ambient temperatures |
| 1.0 mm typical height | Reduces board space and improves mechanical robustness in vibration-prone environments |
| MSL Level 1 (260 °C peak reflow) | Eliminates pre-baking requirement and simplifies SMT assembly process flow |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, enhancing protection margin for sensitive ICs |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control units (ECUs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp transients before they reach regulator ICs. Use Value: Withstands 400 W peak pulse power and maintains clamping below 39.1 V, preventing overvoltage damage to downstream PMICs and microcontrollers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS mounted directly at connector interface to shunt fast transients before entering op-amp or ADC front-end. Use Value: Sub-1 ns response time and 1.0 μA leakage at 21.8 V ensure signal integrity and minimal offset error in precision measurement circuits. |
| Consumer USB Port ESD Protection | Telecom DC Power Input Protection |
Use Scenario: Adding secondary-level ESD protection on VBUS line of USB 2.0 ports in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary fuse and upstream of USB switch IC to absorb contact discharge events. Use Value: AEC-Q101 qualification and 300 V HBM ESD rating provide margin beyond IEC 61000-4-2 ±8 kV contact discharge requirements. | Use Scenario: Protecting 48 V DC input of PoE-powered network switches against surges induced by nearby lightning strikes. IC Role / Device Role / Timing Role: Primary transient suppressor on main DC input rail, coordinated with MOV and filter inductors. Use Value: 40 A IFSM rating and 400 W PPPM enable reliable handling of long-duration surges without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/5AT | DO-214AC (SMA) package; 24 V nominal VWM; 38.9 V VC @ 10.3 A; 400 W PPPM | Larger footprint (4.5 mm × 2.7 mm) and 2.2 mm height; less suitable for ultra-thin automotive modules | Select when legacy SMA layout exists and height constraint is relaxed |
| TPSMD27H | DO-218AB (SMF) package; same VBR range; 39.1 V VC; 400 W PPPM; halogen-free | Higher profile (2.3 mm); different pad layout; not AEC-Q101 qualified | Select for industrial-only designs where automotive qualification is unnecessary |
Compared with SMAJ24A-E3/5AT and TPSMD27H, TPSMP27HM3/85A offers the lowest profile (1.0 mm), smallest footprint (3.61 mm × 1.88 mm), and full AEC-Q101 qualification-making it optimal for space-constrained, high-reliability automotive applications requiring zero rework risk in SMT assembly.
Availability
TPSMP27HM3/85A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer USB power delivery systems, and telecom DC input stages requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for TPSMP27HM3/85A 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The TPSMP series belongs to Vishay's eSMP® family of high-power-density TVS diodes, engineered specifically for automotive and industrial applications demanding AEC-Q101 compliance, ultra-low profile, and robust transient immunity.
FAQ
What is the breakdown voltage range of the TPSMP27HM3/85A?
The TPSMP27HM3/85A has a specified breakdown voltage (VBR) range of 24.3 V to 29.7 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This range ensures consistent avalanche initiation across production lots and temperature extremes, and is confirmed in the Vishay datasheet Document Number 88471, page 2. The device is marked "BNP" on its body per the ordering table.
Is the TPSMP27HM3/85A suitable for automotive applications?
Yes, the TPSMP27HM3/85A is AEC-Q101 qualified and rated for operation from -65 °C to +185 °C junction temperature, making it suitable for under-hood automotive applications including engine control units, body control modules, and ADAS power supplies. Its DO-220AA package meets MSL Level 1 and supports lead-free reflow up to 260 °C.
What is the clamping voltage of the TPSMP27HM3/85A at its rated peak pulse current?
The TPSMP27HM3/85A clamps to a maximum of 39.1 V at its rated peak pulse current (IPPM) of 10.2 A under a 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of the Vishay datasheet 88471 and defines the upper voltage limit imposed on protected circuitry during surge events.
Does the TPSMP27HM3/85A have unidirectional or bidirectional polarity?
The TPSMP27HM3/85A is a unidirectional TVS diode, as explicitly stated in the Features section of the Vishay datasheet. Polarity is indicated by a cathode band; it conducts only when the cathode is biased positively relative to the anode, making it appropriate for DC-biased lines like power rails and signal outputs.
What packaging option does the TPSMP27HM3/85A use, and what is its reel size?
The TPSMP27HM3/85A is supplied in 13-inch diameter plastic tape and reel format, with base package code "85A" and base quantity of 10,000 units per reel. This packaging supports high-speed automated placement and complies with EIA-481 standards, as documented in the Ordering Information section of Vishay document 88471.
TPSMP27HM3/85A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 10.2A
- Power - Peak Pulse:
- 400W
- 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-220AA (SMP)
TPSMP27HM3/85A FAQ
1.How can I place an order for TPSMP27HM3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP27HM3/85A 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 TPSMP27HM3/85A reliable?
The price and inventory of TPSMP27HM3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP27HM3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP27HM3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP27HM3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP27HM3/85A?
TPSMP27HM3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP27HM3/85A 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 TPSMP27HM3/85A?
For technical support, including TPSMP27HM3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP27HM3/85A requirements.
6.How does Aetrix verify that TPSMP27HM3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP27HM3/85A 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 TPSMP27HM3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP27HM3/85A?
All TPSMP27HM3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP27HM3/85A, 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 TPSMP27HM3/85A part is unused and in its original packaging.
Return procedure for TPSMP27HM3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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