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Vishay General Semiconductor - Diodes Division TPC47AHM3_A/I
- Part No.:
- TPC47AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC47AHM3_A/I.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:5,507
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Product details
Overview
TPC47AHM3_A/I from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, designed for high-reliability automotive and industrial electronics protection. It features a standoff voltage of 40.2 V, breakdown voltage range 44.7–49.4 V at 1 mA, clamping voltage of 64.8 V at 23.1 A peak pulse current, and junction temperature rating up to +185 °C.
For engineers reviewing the TPC47AHM3_A/I datasheet, TPC47AHM3_A/I pinout, TPC47AHM3_A/I application, or TPC47AHM3_A/I equivalent, this device serves as a robust, AEC-Q101-qualified surge protector for MOSFET gate drivers, sensor signal lines, and power rail inputs where low-profile SMT placement and MSL Level 1 handling are required.
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 architecture enables integration into DC-biased circuits such as 12 V/24 V automotive power rails and I/O lines with defined polarity.
The TO-277A (SMPC) package supports automated placement and delivers thermal performance validated per JESD 22-B102 and JESD 201 Class 2 whisker testing. The device meets AEC-Q101 stress requirements and operates across -65 °C to +185 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy surges without failure in automotive load-dump or ISO 7637-2 pulse 5a scenarios |
| Standoff Voltage (VWM) | 40.2 V - blocks normal operating voltage while remaining inactive until transients exceed threshold |
| Breakdown Voltage (VBR) | 44.7–49.4 V at 1 mA - defines precise conduction onset for predictable clamping behavior |
| Clamping Voltage (VC) | 64.8 V at IPPM = 23.1 A - limits downstream voltage stress during worst-case surge events |
| Junction Temperature Max | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| Package | TO-277A (SMPC) - ultra-low profile (1.1 mm typical height), halogen-free, RoHS-compliant, and AEC-Q101 qualified |
| Surge Current (IPPM) | 23.1 A - peak current capability verified per 10/1000 µs waveform, derated above 25 °C ambient |
Pinout & Package
TO-277A (SMPC) is a 3-terminal surface-mount package with cathode-anode-cathode configuration. It measures 4.80 × 3.70 × 1.10 mm (L × W × H) and features matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Cathode) | Anode-side cathode connection | Provides one path for reverse-biased clamping; electrically tied to Terminal 2 in internal structure |
| Terminal 2 (Anode) | Common anode node | Connects to protected circuit's positive rail or signal line; carries full surge current during clamping |
| Terminal 3 (Cathode) | Second cathode terminal | Completes dual-cathode layout for low-inductance mounting; symmetric with Terminal 1 for balanced PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JEDEC standards |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C / 60 % RH - eliminates bake requirements before reflow |
| Low profile (1.1 mm height) | Enables use in space-constrained modules such as ADAS ECUs and compact motor controllers |
| Passivated anisotropic rectifier | Delivers stable VBR over lifetime and temperature, minimizing parameter drift in harsh environments |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates without compromising surge performance or thermal robustness |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V supply inputs in engine control units against ISO 7637-2 pulse 5a load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp surges before they reach regulator ICs. Use Value: Withstands 1500 W peak power and clamps at 64.8 V, ensuring downstream regulators remain within absolute maximum ratings. |
Use Scenario: Shielding analog output lines of pressure or temperature sensors in factory automation systems from ESD and switching noise. IC Role / Device Role / Timing Role: TVS connected between signal line and ground to shunt fast transients while preserving signal integrity. Use Value: Sub-1 ns response time and 64.8 V clamping prevent latch-up or damage to precision ADC front-ends operating near 5 V or 3.3 V rails. |
| MOSFET Gate Driver Protection | Telecom DC Power Input Protection |
|
Use Scenario: Safeguarding high-side N-channel MOSFET gate drive signals in motor inverters exposed to inductive kickback. IC Role / Device Role / Timing Role: TVS placed between gate driver output and MOSFET gate to absorb voltage spikes induced by rapid dV/dt transitions. Use Value: Low incremental surge resistance ensures minimal overshoot during clamping, preserving gate oxide integrity and switching timing. |
Use Scenario: Securing primary DC input of telecom base station power supplies against lightning-induced surges on -48 V distribution lines. IC Role / Device Role / Timing Role: Unidirectional TVS installed upstream of bulk capacitors and hot-swap controllers to limit transient energy entering system. Use Value: 23.1 A IPPM and 1500 W PPPM rating meet ITU-T K.20/21 immunity requirements for central office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/57T | Lower PPPM (400 W), SMA package (higher profile, lower thermal mass), VWM = 36.8 V, VC = 69.4 V at 5.8 A | Better suited for cost-sensitive consumer electronics; not AEC-Q101 qualified or rated for >150 °C operation | Select when board space allows larger footprint and automotive qualification is unnecessary |
| TPC43AHM3_A/I | VWM = 36.8 V, VBR = 40.9–45.2 V, VC = 59.3 V at 25.3 A - lower clamping but reduced voltage margin vs. 48 V systems | Preferred for 36 V nominal systems (e.g., commercial vehicle 24 V+ loads); same package, pinout, and qualification | Choose for tighter clamping in lower-voltage rails where 40.2 V standoff is insufficient |
Compared with SMAJ43A-E3/57T and TPC43AHM3_A/I, the TPC47AHM3_A/I provides higher standoff and clamping headroom for 48 V automotive architectures while maintaining identical TO-277A mechanical fit and AEC-Q101 compliance - critical for next-generation EV power distribution modules.
Availability
TPC47AHM3_A/I is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and telecom DC input protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for TPC47AHM3_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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The TPC47AHM3_A/I belongs to Vishay's PAR® series of high-power TVS diodes, engineered specifically for AEC-Q101-compliant transient suppression in demanding automotive and industrial power systems.
FAQ
What is the maximum clamping voltage of the TPC47AHM3_A/I under standard test conditions?
The TPC47AHM3_A/I has a maximum clamping voltage (VC) of 64.8 V when subjected to its rated peak pulse current of 23.1 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 04-Nov-16. Clamping performance remains stable across the full operating temperature range due to the device's passivated anisotropic rectifier construction. The TPC47AHM3_A/I maintains this specification under both single-pulse and repetitive surge conditions when derated per Figure 2 in the datasheet.
Is the TPC47AHM3_A/I suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the TPC47AHM3_A/I is explicitly AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and powertrain applications. Its TO-277A package meets JESD 201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity requirements. The TPC47AHM3_A/I is listed in Vishay's official AEC-Q101 qualified products table and undergoes full stress testing per the standard - including HTGB, HTRB, and temperature cycling - confirming its suitability for automotive use cases.
What does the "HM3_A/I" suffix indicate in the TPC47AHM3_A/I part number?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified base package code for TO-277A devices. The "A" is the revision code indicating the current manufacturing iteration, and "I" specifies the packaging format: 13-inch diameter plastic tape and reel with 6500 units per reel. This differs from "H" packaging (7-inch reel, 1500 units). The TPC47AHM3_A/I therefore guarantees full compliance, traceability, and logistics compatibility for high-volume automotive production lines.
How does the TPC47AHM3_A/I compare to bidirectional TVS diodes in surge protection applications?
The TPC47AHM3_A/I is unidirectional and intended for DC-biased circuits where polarity is fixed - such as 12 V/24 V/48 V power rails or signal lines referenced to ground. Unlike bidirectional TVS diodes, it does not conduct during normal reverse bias, eliminating leakage concerns in sensitive analog paths. Its clamping performance is optimized for positive-going transients only, delivering lower dynamic impedance and tighter voltage control than equivalent bidirectional parts. For AC or floating signal lines, a bidirectional variant would be required - but the TPC47AHM3_A/I excels where polarity stability and low leakage are critical.
What is the recommended PCB pad layout for the TPC47AHM3_A/I in high-current surge applications?
Vishay specifies a minimum mounting pad layout for the TO-277A package: 6.80 mm × 4.72 mm overall, with 1.27 mm minimum solder mask opening and 1.04 mm minimum conductor width. For high-current surge applications, use ≥2 oz copper on inner layers, thermal vias under terminals (≥4 per cathode), and symmetric trace routing to minimize inductance. The TPC47AHM3_A/I benefits from short, wide traces to reduce parasitic inductance - especially between anode and ground - to preserve sub-1 ns response time and ensure clamping occurs before downstream ICs experience overvoltage.
TPC47AHM3_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):
- 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/I FAQ
1.How can I place an order for TPC47AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC47AHM3_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 TPC47AHM3_A/I reliable?
The price and inventory of TPC47AHM3_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 TPC47AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPC47AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC47AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC47AHM3_A/I?
TPC47AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC47AHM3_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 TPC47AHM3_A/I?
For technical support, including TPC47AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC47AHM3_A/I requirements.
6.How does Aetrix verify that TPC47AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPC47AHM3_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 TPC47AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPC47AHM3_A/I?
All TPC47AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPC47AHM3_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 TPC47AHM3_A/I part is unused and in its original packaging.
Return procedure for TPC47AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC47AHM3_A/I Tags
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