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Vishay General Semiconductor - Diodes Division TPC39AHM3_A/H
- Part No.:
- TPC39AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC39AHM3_A/H.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:3,056
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Product details
Overview
TPC39AHM3_A/H from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, designed for clamping voltage transients on power and signal lines. It features a standoff voltage of 33.3 V, breakdown voltage range of 37.1–41.0 V at 1 mA, clamping voltage of 53.9 V at 27.8 A, and operates from −65 °C to +185 °C. It is AEC-Q101 qualified and used for automotive sensor line protection.
For engineers reviewing the TPC39AHM3_A/H datasheet, TPC39AHM3_A/H pinout, TPC39AHM3_A/H application, or TPC39AHM3_A/H equivalent, key selection criteria include unidirectional clamping performance, 1500 W peak pulse power rating, 185 °C junction temperature capability, TO-277A package compatibility with automated placement, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The TPC39AHM3_A/H employs passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time (<1 ns). Its unidirectional architecture enables forward-biased clamping during overvoltage events on DC-biased lines, with clamping initiated at 37.1 V minimum breakdown voltage.
Designed for high-reliability automotive applications, it supports operation up to TJ = 185 °C and meets MSL Level 1 per J-STD-020. The device exhibits low profile (1.1 mm typical height), matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains high-energy transients without failure in automotive load-dump or inductive switching events |
| Standoff Voltage (VWM) | 33.3 V - maximum continuous reverse voltage before significant leakage; sets operating margin below breakdown |
| Breakdown Voltage (VBR) | 37.1–41.0 V at 1 mA - precise threshold where avalanche conduction begins under controlled test conditions |
| Clamping Voltage (VC) | 53.9 V at 27.8 A - maximum voltage seen by protected circuit during specified 10/1000 μs surge current |
| Junction Temperature Range | −65 °C to +185 °C - enables deployment in under-hood automotive environments and industrial hot zones |
| Package | TO-277A (SMPC) - surface-mount, low-profile (1.1 mm), AEC-Q101 qualified, halogen-free, RoHS-compliant |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
Pinout & Package
TO-277A (SMPC) package: 3-terminal surface-mount configuration with cathode-anode-cathode layout. Dimensions conform to JEDEC TO-277A standard; nominal height 1.1 mm, footprint 3.70 mm × 4.80 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Cathode) | Anode-side cathode connection | One of two parallel cathode terminals; reduces effective series inductance and improves surge current sharing |
| Terminal 2 (Anode) | Forward conduction path input | Connected to protected line; conducts during reverse-biased avalanche or forward-biased surge events |
| Terminal 3 (Cathode) | Anode-side cathode connection | Second cathode terminal; symmetric layout ensures balanced thermal and electrical performance across both cathodes |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable breakdown voltage and low leakage over lifetime and temperature |
| Low profile height | 1.1 mm typical - enables use in space-constrained modules such as ADAS camera ECUs and motor control PCBs |
| Automated placement compatibility | Matte tin-plated leads and defined land pattern support high-yield SMT assembly without tombstoning or misalignment |
| MSL Level 1 rating | No floor life limitation - eliminates bake requirements prior to reflow, reducing manufacturing overhead |
| Halogen-free & RoHS | HM3 suffix confirms compliance with environmental regulations and automotive material categorization per Vishay Doc. 99912 |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
|
Use Scenario: Protecting LIN bus and analog sensor outputs (e.g., pressure, temperature) in engine control units from load dump and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller input to clamp transients while preserving DC bias. Use Value: Withstand 1500 W surges and operate up to 185 °C, ensuring robustness in under-hood environments where TPC39AHM3_A/H replaces less rugged alternatives. |
Use Scenario: Safeguarding gate driver inputs and feedback lines in variable-frequency drives exposed to inductive kickback from IGBTs/MOSFETs. IC Role / Device Role / Timing Role: Fast-clamping TVS on isolated signal paths to prevent false triggering or latch-up in PWM control circuits. Use Value: 53.9 V clamping voltage at 27.8 A limits stress on downstream optocouplers and level shifters, maintaining timing integrity during surge events. |
| Telecom Power Rail Protection | Consumer Power Adapter Outputs |
|
Use Scenario: Guarding 24 V/48 V DC power rails in base station remote radio units against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary unidirectional clamping device on secondary-side DC distribution, coordinated with upstream MOVs. Use Value: 1500 W rating and low incremental surge resistance allow TPC39AHM3_A/H to absorb energy without thermal runaway during repeated 10/1000 μs pulses. |
Use Scenario: Protecting USB-C PD output lines and auxiliary 5 V/12 V rails in multi-output AC/DC adapters from ESD and cable discharge events. IC Role / Device Role / Timing Role: Secondary-level TVS on regulated output, placed after DC-DC converters to suppress post-regulation transients. Use Value: TO-277A's low profile and AEC-Q101 qualification enable reuse of automotive-grade TPC39AHM3_A/H in premium consumer power designs requiring extended reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5A (Vishay) | Lower PPPM (400 W), SMA package (higher thermal resistance), VWM = 36 V, VC = 58.1 V at 6.9 A | Rated for commercial/industrial use only; not AEC-Q101 qualified; unsuitable for under-hood automotive | Select when cost sensitivity outweighs automotive qualification and surge energy demands are ≤400 W |
| TPSMD36CA (Littelfuse) | Bidirectional configuration, same VWM/VC specs, DO-214AB package, 1500 W rating, AEC-Q101 qualified | Clamps both polarities - appropriate for AC-coupled or floating signal lines but adds leakage in DC-biased applications | Choose only if bidirectional protection is required; otherwise TPC39AHM3_A/H offers lower leakage and optimized unidirectional clamping |
Compared with SMAJ36A-E3/5A and TPSMD36CA, the TPC39AHM3_A/H delivers higher surge current handling (27.8 A vs. 6.9 A), lower clamping voltage (53.9 V vs. 58.1 V), and identical AEC-Q101 qualification - making it optimal for high-energy, DC-biased automotive signal protection where unidirectional behavior is mandatory.
Availability
TPC39AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive feedback circuits, telecom DC power distribution, and consumer power adapter outputs requiring stable component supply and long-term lifecycle assurance.
Supply support for TPC39AHM3_A/H 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 TPC39AHM3_A/H belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for high-power transient suppression in harsh automotive and industrial environments where AEC-Q101 compliance and 185 °C operation are critical.
FAQ
What is the clamping voltage of the TPC39AHM3_A/H at its rated peak pulse current?
The TPC39AHM3_A/H has a maximum clamping voltage (VC) of 53.9 V at 27.8 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on the protected circuit during a full-rated surge event, and is confirmed in the Electrical Characteristics table of Vishay Document 89056. The low clamping ratio (VC/VBR ≈ 1.45) reflects efficient avalanche energy absorption in the TPC39AHM3_A/H.
Is the TPC39AHM3_A/H suitable for automotive under-hood applications?
Yes, the TPC39AHM3_A/H is explicitly AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications such as engine control modules, transmission control units, and ADAS sensor interfaces. Its TO-277A package, halogen-free construction, and MSL Level 1 rating further support robust automotive manufacturing and field reliability - all verified in Vishay's official qualification report for the TPC39AHM3_A/H.
What does the "HM3_A/H" suffix indicate in TPC39AHM3_A/H?
The "HM3" suffix denotes Vishay's halogen-free, RoHS-compliant, and AEC-Q101-qualified variant in the TO-277A package; "A" is the revision code, and "H" specifies the preferred packaging format: 7-inch plastic tape and reel with 1500 units per reel. This ordering code directly maps to the preferred P/N listed in the Ordering Information section of Document 89056 for the TPC39AHM3_A/H.
How does the dual-cathode configuration of the TPC39AHM3_A/H improve performance?
The TPC39AHM3_A/H uses a three-terminal TO-277A package with two cathodes (Terminals 1 and 3) and one anode (Terminal 2), enabling symmetrical current sharing and reduced effective series inductance during high-di/dt surge events. This layout lowers incremental surge resistance and improves clamping consistency - a design advantage confirmed in Vishay's characterization data for the TPC39AHM3_A/H family versus conventional two-terminal TVS diodes.
Can the TPC39AHM3_A/H replace older TPC39A variants without board changes?
Yes, the TPC39AHM3_A/H is a direct drop-in replacement for earlier TPC39A versions in the same TO-277A package, retaining identical pinout, footprint, and thermal profile. The HM3 suffix adds halogen-free and enhanced whisker resistance, but electrical specifications and mechanical dimensions remain fully compatible - verified in Vishay's revision notes and mechanical drawings for the TPC39AHM3_A/H.
TPC39AHM3_A/H 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/H FAQ
1.How can I place an order for TPC39AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC39AHM3_A/H 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/H reliable?
The price and inventory of TPC39AHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for TPC39AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC39AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC39AHM3_A/H?
TPC39AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC39AHM3_A/H 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/H?
For technical support, including TPC39AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC39AHM3_A/H requirements.
6.How does Aetrix verify that TPC39AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPC39AHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of TPC39AHM3_A/H?
All TPC39AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC39AHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for TPC39AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC39AHM3_A/H Tags
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Diodes Incorporated
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Diodes Incorporated
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