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Vishay General Semiconductor - Diodes Division TPC47AHM3_A/H
- Part No.:
- TPC47AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC47AHM3_A/H.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:1,358
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Product details
Overview
TPC47AHM3_A/H from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, designed for high-reliability protection of sensitive electronics against inductive switching and lightning-induced transients. It features a breakdown voltage of 44.7–49.4 V, clamping voltage of 64.8 V at 23.1 A peak pulse current, and operates up to 185 °C junction temperature. It is AEC-Q101 qualified and used to safeguard MOSFETs and signal lines in automotive powertrain control units.
For engineers reviewing the TPC47AHM3_A/H datasheet, TPC47AHM3_A/H pinout, TPC47AHM3_A/H application, or TPC47AHM3_A/H equivalent, key selection criteria include unidirectional clamping performance, 1500 W peak pulse power rating, TO-277A package compatibility with automated placement, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The TPC47AHM3_A/H employs passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of fast-rising transients. Its unidirectional architecture provides forward conduction path during overvoltage events while maintaining low leakage (<1 μA at 40.2 V) at stand-off voltage.
Rated for TJ = –65 °C to +185 °C, it supports high-temperature environments such as engine compartments and power inverters. The device meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing, confirming robustness for lead-free reflow assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V - ensures reliable triggering above system operating voltage while avoiding false clamping during normal operation |
| VWM | 40.2 V - maximum continuous reverse working voltage compatible with 36 V nominal automotive systems |
| VC @ IPPM | 64.8 V - clamping voltage at 23.1 A peak pulse current defines protected circuit's maximum transient stress level |
| PPPM | 1500 W - peak pulse power handling capability for 10/1000 µs waveform per IEEE C62.35 |
| IFSM | 200 A - surge current rating for 8.3 ms half-sine wave enables robustness against load dump events |
| TJ max | +185 °C - extended junction temperature range supports under-hood automotive applications without derating |
| Package | TO-277A (SMPC) - ultra-low profile (1.1 mm typical height), surface-mount, halogen-free, RoHS-compliant |
Pinout & Package
TPC47AHM3_A/H uses the TO-277A (SMPC) package: a 3-terminal, single-anode dual-cathode configuration with 1.1 mm typical height, matte tin-plated leads, and UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Forward conduction terminal | Connected to ground or low-side reference; enables unidirectional clamping when cathodes are biased above anode |
| Cathode 1 (Pin 1) | Reverse-biased protection node | Primary connection point for protected line (e.g., 42 V battery rail); conducts during overvoltage to clamp to VC |
| Cathode 2 (Pin 2) | Reverse-biased protection node | Second cathode terminal-electrically tied internally to Cathode 1; allows dual-pad layout for thermal and mechanical stability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| 185 °C junction rating | Enables direct placement near high-power components without thermal derating in engine control modules |
| Low-profile SMPC package | 1.1 mm height supports compact PCB layouts in space-constrained automotive ECUs and ADAS sensors |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying SMT manufacturing |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements for automotive OEM supply chains |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Protection |
|---|---|
|
Use Scenario: Protecting gate drivers and MCU I/O in 48 V mild-hybrid vehicle inverters exposed to load dump and inductive kickback. IC Role / Device Role: Unidirectional TVS placed across DC-link and gate drive lines to clamp transients below MOSFET avalanche threshold. Use Value: Prevents destructive failure of SiC MOSFETs by limiting transient voltage to 64.8 V at 23.1 A, within safe operating area. |
Use Scenario: Safeguarding encoder feedback lines and PLC analog inputs in servo motor controllers subject to relay coil switching noise. IC Role / Device Role: Line-to-ground TVS on differential signal pairs to suppress common-mode surges without distorting signal integrity. Use Value: Maintains <1 μA leakage at 40.2 V stand-off, ensuring minimal offset error in precision 24 V industrial sensor interfaces. |
| Telecom DC Power Feeds | Onboard Charger Input Stage |
|
Use Scenario: Transient protection on -48 V telecom power distribution boards where lightning-induced surges exceed 1 kV. IC Role / Device Role: Primary clamping device on input bus before DC/DC converters, absorbing 1500 W pulses per IEEE C62.41. Use Value: Delivers 64.8 V clamping at full rated current, reducing downstream converter overvoltage stress and improving MTBF. |
Use Scenario: Input-stage surge suppression in EV onboard chargers connected to AC/DC front-end and PFC stages. IC Role / Device Role: Bidirectional-capable system uses two TPC47AHM3_A/H devices back-to-back for symmetrical clamping on DC bus rails. Use Value: Dual-cathode structure enables compact dual-device layout with shared thermal pad, lowering board area vs. discrete alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/5A (Vishay) | Lower PPPM (400 W), SMA package (3.5 mm height), VBR = 47.8–52.8 V, VC = 69.4 V @ 5.8 A | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 7637-2 Pulse 5a | Select only for cost-sensitive consumer applications with <500 W surge exposure and no AEC-Q101 requirement |
| TPSMD43A (Littelfuse) | Same 1500 W rating, DO-214AB package (2.6 mm height), VBR = 47.8–52.8 V, VC = 69.4 V @ 21.6 A | Higher clamping voltage increases protected IC stress; lacks AEC-Q101 certification | Acceptable for industrial non-automotive use where 69.4 V clamping is tolerable and automotive qualification is not required |
Compared with SMAJ43A-E3/5A and TPSMD43A, TPC47AHM3_A/H delivers superior thermal performance (185 °C rating), lower profile (1.1 mm), and certified AEC-Q101 compliance-making it the only option qualified for under-hood automotive deployment with full load dump immunity.
Availability
TPC47AHM3_A/H is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drives, telecom DC power feeds, and EV onboard charger input stages requiring stable component supply and long-term lifecycle support.
Supply support for TPC47AHM3_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, TVS, and MOSFETs with emphasis on high-reliability, high-power, and automotive-qualified solutions.
The TPC series was developed specifically for high-energy transient suppression in 12 V–48 V automotive and industrial systems, prioritizing low clamping voltage, high-temperature operation, and automated assembly compatibility.
FAQ
What is the exact breakdown voltage range specified for TPC47AHM3_A/H?
The TPC47AHM3_A/H has a guaranteed breakdown voltage range of 44.7 V minimum to 49.4 V maximum at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range ensures consistent triggering behavior across production lots and temperature extremes, critical for protecting 36–42 V automotive subsystems without nuisance conduction during normal operation. The TPC47AHM3_A/H datasheet confirms this specification on page 2, Table "ELECTRICAL CHARACTERISTICS".
Is TPC47AHM3_A/H suitable for bidirectional transient protection?
No, TPC47AHM3_A/H is strictly unidirectional and must be used with anode grounded and cathodes connected to protected lines. For bidirectional protection, two TPC47AHM3_A/H devices can be connected in series opposition (anode-to-anode), but this configuration requires careful layout to avoid parasitic inductance. The TPC47AHM3_A/H product family does not offer a native bidirectional variant; alternative part numbers like TPC47CA would be required for true bidirectional operation.
Does TPC47AHM3_A/H meet automotive qualification standards?
Yes, TPC47AHM3_A/H is AEC-Q101 qualified and explicitly listed as "Automotive grade" in the Vishay datasheet (page 2, footnote 1). It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge per AEC-Q101 Rev D. This qualification validates its suitability for safety-critical automotive applications such as engine control units and battery management systems where TPC47AHM3_A/H is deployed.
What is the maximum clamping voltage of TPC47AHM3_A/H and at what current is it measured?
The maximum clamping voltage of TPC47AHM3_A/H is 64.8 V, measured at a peak pulse current (IPPM) of 23.1 A using a 10/1000 µs waveform per IEEE C62.35. This value represents the upper limit of voltage seen by downstream components during worst-case surge events and is confirmed in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the official Vishay document 89056. The TPC47AHM3_A/H maintains this clamping performance across its full operating temperature range.
Can TPC47AHM3_A/H be used in lead-free reflow processes without preconditioning?
Yes, TPC47AHM3_A/H is rated MSL Level 1 per J-STD-020 and has no floor life limitation, meaning it can be used directly in lead-free reflow (peak temperature up to 260 °C) without baking or dry-pack handling. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, and the HM3 suffix confirms passing JESD 201 Class 2 whisker testing-ensuring solder joint reliability in high-volume SMT production of TPC47AHM3_A/H assemblies.
TPC47AHM3_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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- 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)
TPC47AHM3_A/H FAQ
1.How can I place an order for TPC47AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC47AHM3_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 TPC47AHM3_A/H reliable?
The price and inventory of TPC47AHM3_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 TPC47AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPC47AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC47AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC47AHM3_A/H?
TPC47AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC47AHM3_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 TPC47AHM3_A/H?
For technical support, including TPC47AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC47AHM3_A/H requirements.
6.How does Aetrix verify that TPC47AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPC47AHM3_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 TPC47AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPC47AHM3_A/H?
All TPC47AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC47AHM3_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 TPC47AHM3_A/H part is unused and in its original packaging.
Return procedure for TPC47AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC47AHM3_A/H Tags
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