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Vishay General Semiconductor - Diodes Division TPC39AHM3/87A
- Part No.:
- TPC39AHM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC39AHM3/87A.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,179
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Product details
Overview
TPC39AHM3/87A from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in SMPC (TO-277A) package, designed for high-reliability automotive and industrial electronics protection. It features a standoff voltage of 33.3 V, breakdown voltage of 37.1–41.0 V at 1 mA, clamping voltage of 53.9 V at 27.8 A, and operates up to 185 °C junction temperature.
For engineers reviewing the TPC39AHM3/87A datasheet, TPC39AHM3/87A pinout, TPC39AHM3/87A application, or TPC39AHM3/87A equivalent, key selection criteria include unidirectional surge handling, AEC-Q101 qualification, low-profile 1.1 mm height, MSL Level 1 rating, and compatibility with automated SMT placement on power rails and signal lines.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for fast response (<1 ns), low incremental surge resistance, and stable clamping under repetitive transients. Its unidirectional configuration supports DC-biased protection paths where reverse conduction must be blocked during normal operation.
The device is rated for 10/1000 μs waveform peak pulse power of 1500 W, withstands 200 A non-repetitive forward surge current (8.3 ms half-sine), and maintains reliable operation across -65 °C to +185 °C junction temperature range - meeting automotive-grade thermal and reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V at 1 mA - ensures predictable turn-on threshold across production lot and temperature |
| VC @ IPPM | 53.9 V at 27.8 A - limits downstream voltage stress during 10/1000 μs surge events |
| PPPM | 1500 W - peak pulse power handling capability per standard 10/1000 μs waveform |
| TJ max | +185 °C - enables use in under-hood automotive modules and high-temperature industrial enclosures |
| Package | SMPC (TO-277A) - surface-mount, 3-terminal, low-profile (1.1 mm typical height) package with matte tin leads |
| AEC-Q101 | Qualified - validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMPC (TO-277A), 3-terminal surface-mount package with cathode band marking. Dimensions conform to JEDEC TO-277A standard; mounting pad layout specified for 2 oz. copper PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Cathode | Connected to protected line; conducts during overvoltage event to shunt surge current to ground |
| Terminal 2 | Cathode | Parallel cathode connection - enables higher surge current sharing between dual-cathode structure |
| Terminal 3 | Anode | Common anode tied to system ground or low-impedance return path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR and low leakage over lifetime and temperature |
| Low profile height | 1.1 mm typical - allows integration into space-constrained automotive ECUs and sensor modules |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60 % RH - eliminates bake requirements prior to reflow |
| Automated placement compatibility | Matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 - supports high-yield pick-and-place |
| Whisker resistance | HM3 suffix meets JESD 201 Class 2 - prevents tin whisker growth in long-life applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches LDOs or MCU VDD pins. Use Value: Clamps to 53.9 V at 27.8 A, limiting stress on downstream 36 V-rated regulators and ensuring system survival per AEC-Q100 stress profiles. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) in factory automation sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Fast-response (<1 ns) voltage clamp placed directly at connector interface to absorb sub-microsecond transients. Use Value: Low clamping voltage and 1500 W rating prevent latch-up or damage to precision op-amps and ADC front-ends without adding series impedance. |
| Telecom DC Power Interface | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding PoE-powered Ethernet switch ports and base station RF module DC feeds from lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge suppression stage on 48 V input rail, coordinated with upstream fuse and downstream filtering. Use Value: 185 °C TJ rating supports operation near heat-generating RF amplifiers; AEC-Q101 qualification adds confidence in field reliability. | Use Scenario: Protecting gate drivers and MCU I/O in smart home appliance motor controllers (e.g., washing machine inverter boards) from back-EMF spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS on half-bridge high-side and low-side supply rails to clamp commutation spikes. Use Value: Dual-cathode configuration (Terminals 1 & 2) enables symmetrical layout and balanced current sharing during bidirectional inductive transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5A (Vishay) | Lower PPPM (400 W), SMA package, VC = 58.1 V @ 6.9 A, TJ max = 150 °C | Limited to lower-energy transients; not AEC-Q101 qualified; unsuitable for under-hood automotive | Select only for cost-sensitive consumer applications with <500 W surge exposure and ambient <125 °C. |
| TPC36AHM3/87A (Vishay) | VWM = 30.8 V, VBR = 34.2–37.8 V, VC = 49.9 V @ 30.1 A - tighter clamping at lower voltage but reduced surge margin | Better for 24 V systems requiring lower clamping; less headroom for VBR drift at high temperature | Prefer when protecting 28 V nominal rails where 50 V clamping is critical and 1500 W remains sufficient. |
Compared with SMAJ36A-E3/5A and TPC36AHM3/87A, the TPC39AHM3/87A delivers higher clamping voltage tolerance (53.9 V), full AEC-Q101 compliance, and extended 185 °C operation - making it the preferred choice for 36 V automotive and industrial power rail protection where thermal margin and qualification rigor are mandatory.
Availability
TPC39AHM3/87A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom DC power supplies, and consumer appliance motor drive circuits requiring stable component supply and long-term lifecycle support.
Supply support for TPC39AHM3/87A 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices for high-reliability applications worldwide.
The TPC series is part of Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for automotive-grade transient suppression in harsh thermal and electrical environments.
FAQ
What is the clamping voltage of the TPC39AHM3/87A under a 10/1000 µs surge?
The TPC39AHM3/87A has a maximum clamping voltage (VC) of 53.9 V when subjected to its rated peak pulse current of 27.8 A using the standard 10/1000 µs waveform. This value is measured per Figure 3 in the datasheet and reflects worst-case device behavior at TA = 25 °C. The TPC39AHM3/87A maintains this clamping performance across its full operating temperature range due to its stable passivated junction design.
Is the TPC39AHM3/87A qualified for automotive applications?
Yes, the TPC39AHM3/87A is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and transmission-control applications. Its HM3 suffix confirms halogen-free, RoHS-compliant construction and JESD 201 Class 2 whisker resistance - all verified per Vishay's qualification report for the TPC family. The TPC39AHM3/87A meets automotive reliability requirements without derating.
What does the "HM3/87A" suffix indicate in TPC39AHM3/87A?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified SMPC package with matte tin plating and JESD 201 Class 2 whisker resistance. The "87A" is the revision code indicating the specific manufacturing lot and process iteration per Vishay's internal tracking. Both elements are integral to the full orderable part number TPC39AHM3/87A and define its compliance and reliability attributes.
How is the pinout configured for the TPC39AHM3/87A in the SMPC (TO-277A) package?
The TPC39AHM3/87A uses a 3-terminal SMPC (TO-277A) package with Terminals 1 and 2 both serving as cathodes (marked by a single cathode band line), and Terminal 3 as the common anode. This dual-cathode configuration allows symmetric PCB layout and current sharing during high-energy transients. Pin identification follows JEDEC TO-277A mechanical drawings, with Terminal 1 at the left edge when the cathode band is oriented upward.
Does the TPC39AHM3/87A require derating at elevated ambient temperatures?
Yes, the TPC39AHM3/87A must be derated above TA = 25 °C per Figure 2 in the datasheet: peak pulse power decreases linearly to ~50 % at TA = 125 °C. Derating is based on junction-to-ambient thermal resistance and PCB copper area. For sustained high-temperature operation, thermal simulation using the device's transient thermal impedance curve (Figure 5) is recommended to ensure TJ stays within 185 °C. The TPC39AHM3/87A's 185 °C rating provides margin, but layout-dependent thermal performance governs actual derating.
TPC39AHM3/87A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- PAR®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 27.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- TO-277A (SMPC)
TPC39AHM3/87A FAQ
1.How can I place an order for TPC39AHM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC39AHM3/87A 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 TPC39AHM3/87A reliable?
The price and inventory of TPC39AHM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC39AHM3/87A is usually 5 days.
3.What payment methods are accepted for TPC39AHM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC39AHM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC39AHM3/87A?
TPC39AHM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC39AHM3/87A 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 TPC39AHM3/87A?
For technical support, including TPC39AHM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC39AHM3/87A requirements.
6.How does Aetrix verify that TPC39AHM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC39AHM3/87A 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 TPC39AHM3/87A meets industry standards.
7.What is the process for return or replacement of TPC39AHM3/87A?
All TPC39AHM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC39AHM3/87A, 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 TPC39AHM3/87A part is unused and in its original packaging.
Return procedure for TPC39AHM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC39AHM3/87A Tags
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