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Vishay General Semiconductor - Diodes Division TPC39AHM3_A/I
- Part No.:
- TPC39AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC39AHM3_A/I.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:5,754
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Product details
Overview
TPC39AHM3_A/I from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, designed for robust overvoltage protection of sensitive electronics. It features a standoff voltage (VWM) of 33.3 V, breakdown voltage (VBR) of 37.1–41.0 V at 1 mA, clamping voltage (VC) of 53.9 V at 27.8 A peak pulse current, and operates from −65 °C to +185 °C - ideal for automotive power line and sensor interface protection.
For engineers reviewing the TPC39AHM3_A/I datasheet, TPC39AHM3_A/I pinout, TPC39AHM3_A/I application, or TPC39AHM3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, MSL Level 1 rating, 1.1 mm profile for space-constrained PCBs, low incremental surge resistance, and uni-directional clamping behavior for DC-biased signal or power rail protection.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-reliability transient suppression. Its junction temperature rating up to 185 °C supports under-hood automotive environments, and its 10/1000 μs waveform capability delivers 1500 W peak pulse power with fast response time and low clamping ratio (VC/VBR ≈ 1.38).
The device is rated for uni-directional operation only, with a maximum reverse leakage of 1.0 μA at VWM (33.3 V) and 15 μA at TJ = 150 °C. It meets JESD201 Class 2 whisker resistance and is halogen-free, RoHS-compliant, and qualified per AEC-Q101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33.3 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 37.1 V / 41.0 V at 1.0 mA - ensures reliable triggering above normal operating voltage |
| VC @ IPPM | 53.9 V at 27.8 A - limits transient voltage seen by downstream ICs during 10/1000 μs surge |
| PPPM | 1500 W - peak pulse power handling capacity for short-duration transients |
| TJ max. | +185 °C - enables use in high-temperature automotive and industrial environments |
| Polarity | Uni-directional - protects DC-biased lines such as 24 V supply rails or CAN bus power |
| Package | TO-277A (SMPC) - surface-mount, low-profile (1.1 mm height), AEC-Q101 qualified |
Pinout & Package
TPC39AHM3_A/I is housed in a TO-277A (SMPC) package - a 3-terminal, single-anode dual-cathode configuration with matte tin-plated leads. The package conforms to JEDEC TO-277A outline, offers UL 94 V-0 flammability rating, and supports automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Common anode connection | Reference node for uni-directional clamping; connects to ground or low-side return path |
| Cathode 1 (Pin 1) | First cathode terminal | Connects to protected line (e.g., 24 V supply); forms one clamping path to anode |
| Cathode 2 (Pin 2) | Second cathode terminal | Electrically tied to Cathode 1 internally; provides mechanical redundancy and current sharing |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design improves long-term reliability under repeated surge stress |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60 % RH - eliminates bake requirements before reflow |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Low profile (1.1 mm) | Enables use in ultra-thin modules and compact ECUs where Z-height is constrained |
| Halogen-free & RoHS | Complies with automotive material compliance standards (Vishay Doc. #99912) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Uni-directional TVS clamping device placed between power rail and chassis ground. Use Value: Limits transient voltage to ≤53.9 V during 27.8 A surges, preventing damage to downstream PMICs and microcontrollers. | Use Scenario: Safeguarding analog input pins of industrial pressure or temperature sensors connected to long cables. IC Role / Device Role / Timing Role: Line-side transient suppressor on sensor signal lines referenced to local ground. Use Value: Clamps ESD and lightning-induced surges while maintaining <1.0 μA leakage at 33.3 V, preserving measurement accuracy. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing 48 V DC input of telecom base station power supplies against AC-line coupled transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk DC input before DC/DC conversion stage. Use Value: Withstands 1500 W peak pulses and operates up to +185 °C ambient, supporting fanless telecom enclosure designs. | Use Scenario: Shielding MCU I/O and gate drivers in smart washing machine motor control boards from brush-commutator noise. IC Role / Device Role / Timing Role: Localized TVS on motor driver power and feedback lines. Use Value: Fast response and low clamping voltage prevent false triggering of protection circuits during commutation spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5T | Lower PPPM (400 W), SMA package (higher thermal resistance), VWM = 36 V, VC = 58.1 V @ 6.9 A | Not AEC-Q101 qualified; limited to commercial/industrial use; unsuitable for under-hood automotive | Choose when cost sensitivity outweighs automotive qualification and surge energy requirements are lower |
| TPSMD36A | Same 1500 W PPPM, but DO-214AB package (larger footprint), VWM = 36 V, VC = 58.1 V @ 25.8 A | Higher mounting height (2.6 mm vs. 1.1 mm); less suitable for ultra-low-profile designs | Prefer when board layout allows larger footprint and thermal mass is prioritized over Z-height |
Compared with SMAJ36A-E3/5T and TPSMD36A, TPC39AHM3_A/I delivers superior automotive readiness (AEC-Q101 + 185 °C), smallest Z-height in its 1500 W class, and tighter clamping ratio - making it optimal for space- and reliability-critical 24 V systems.
Availability
TPC39AHM3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for TPC39AHM3_A/I 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, TVS, MOSFETs, and optoelectronics with emphasis on reliability and application-specific performance.
TPC39AHM3_A/I belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for automotive and industrial environments demanding AEC-Q101 qualification, high-temperature operation, and robust transient immunity.
FAQ
What is the maximum clamping voltage of TPC39AHM3_A/I under standard test conditions?
The TPC39AHM3_A/I has a maximum clamping voltage (VC) of 53.9 V when subjected to its rated peak pulse current (IPPM) of 27.8 A using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable voltage limiting during surge events. The clamping performance is guaranteed across the full operating temperature range and is integral to protecting downstream components like microcontrollers and gate drivers in the TPC39AHM3_A/I application circuit.
Is TPC39AHM3_A/I qualified for automotive applications?
Yes, TPC39AHM3_A/I is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and other harsh automotive environments. It also meets JESD201 Class 2 whisker resistance and is halogen-free and RoHS-compliant per Vishay documentation. These qualifications are explicitly confirmed in the official datasheet (Document Number: 89056, Revision: 04-Nov-16) for the TPC39AHM3_A/I device.
What does the "HM3_A/I" suffix indicate in TPC39AHM3_A/I?
The "HM3" denotes the halogen-free, RoHS-compliant, AEC-Q101-qualified TO-277A (SMPC) package variant; "A" is the revision code; and "I" specifies the 13-inch tape-and-reel packaging format with 6500 units per reel. This ordering code distinguishes it from the "H" variant (7-inch reel, 1500 units). The full part number TPC39AHM3_A/I uniquely identifies this specific configuration for procurement and traceability.
Can TPC39AHM3_A/I be used in bi-directional protection circuits?
No, TPC39AHM3_A/I is strictly a uni-directional TVS diode and must not be used for bi-directional or AC-line protection. Its internal structure supports clamping only in the reverse-biased direction relative to the anode. For bi-directional applications, a dedicated bi-directional TVS (e.g., TPC39CA series) or back-to-back configuration would be required - neither of which applies to the TPC39AHM3_A/I device.
What is the thermal resistance (RθJA) of TPC39AHM3_A/I on a standard PCB?
The datasheet does not specify a fixed RθJA value for TPC39AHM3_A/I, as it depends heavily on PCB copper area and layout. However, Figure 5 shows typical transient thermal impedance curves, and the recommended mounting pad layout (Document 89056, page 4) uses a 2 oz. copper area to optimize heat dissipation. For steady-state thermal design, engineers should refer to the transient thermal impedance curve at relevant pulse durations rather than assume a static RθJA - a key consideration in the TPC39AHM3_A/I thermal management strategy.
TPC39AHM3_A/I 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:
- Active
- 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_A/I FAQ
1.How can I place an order for TPC39AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC39AHM3_A/I 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_A/I reliable?
The price and inventory of TPC39AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC39AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPC39AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC39AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC39AHM3_A/I?
TPC39AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC39AHM3_A/I 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_A/I?
For technical support, including TPC39AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC39AHM3_A/I requirements.
6.How does Aetrix verify that TPC39AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPC39AHM3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of TPC39AHM3_A/I?
All TPC39AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPC39AHM3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for TPC39AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC39AHM3_A/I Tags
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