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Vishay General Semiconductor - Diodes Division TPC18CAHM3/H
- Part No.:
- TPC18CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC18CAHM3/H.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:4,838
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Product details
Overview
TPC18CAHM3/H from Vishay General Semiconductor is a bidirectional 1500 W transient voltage suppressor (TVS) in the SMPC (TO-277A) surface-mount package, designed for high-reliability automotive and industrial electronics protection. It features a standoff voltage of 15.3 V, breakdown voltage range of 17.1–18.9 V at 1 mA, clamping voltage of 25.2 V at 59.5 A, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the TPC18CAHM3/H datasheet, TPC18CAHM3/H pinout, TPC18CAHM3/H application, or TPC18CAHM3/H equivalent, key selection criteria include its 1500 W peak pulse power rating, 185 °C maximum junction temperature, low-profile 1.1 mm height, bidirectional polarity, and halogen-free RoHS-compliant construction with JESD201 Class 2 whisker resistance.
Technical Context
The TPC18CAHM3/H operates as a silicon avalanche diode-based PAR® TVS, leveraging junction passivation for stable clamping under repetitive transients. Its bidirectional architecture enables symmetric suppression of positive and negative voltage spikes without external polarity orientation.
Rated for 10/1000 μs surge waveforms, it delivers 59.5 A peak pulse current with 25.2 V clamping voltage while maintaining ≤1.0 μA reverse leakage at 15.3 V standoff. Thermal performance is validated to TJ = –65 °C to +185 °C, supporting operation in harsh automotive environments per AEC-Q101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15.3 V - Maximum continuous reverse operating voltage before significant leakage |
| VBR (min/max) | 17.1 V / 18.9 V at 1 mA - Ensures reliable avalanche initiation across production lot |
| VC @ IPPM | 25.2 V at 59.5 A - Clamping voltage limits downstream IC stress during 10/1000 μs surges |
| PPPM | 1500 W - Peak pulse power handling capability per standard IEC 61000-4-5 surge test conditions |
| TJ max | +185 °C - Enables placement near heat sources in engine control units and ADAS modules |
| Polarity | Bidirectional - Eliminates orientation concerns during automated SMT placement |
| MSL Level | Level 1 (J-STD-020) - Supports lead-free reflow up to 260 °C peak without moisture-induced damage |
Pinout & Package
Package: SMPC (TO-277A), 2-terminal surface-mount case with matte tin-plated leads, 1.1 mm typical height, UL 94 V-0 molding compound, and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity - no marking required |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; symmetrical conduction path for ± surges |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized PAR® design | Stable VBR over lifetime and temperature, minimizing parameter drift in automotive ECUs |
| AEC-Q101 qualification | Validated reliability for automotive-grade deployment including temperature cycling, HTRB, and ESD testing |
| Very low profile (1.1 mm height) | Enables use in space-constrained modules such as radar sensors and battery management systems |
| Halogen-free, RoHS-compliant | Meets global environmental compliance requirements without compromising electrical performance |
| Low leakage current (≤1.0 μA @ VWM) | Reduces standby power loss in always-on vehicle networks like CAN FD and LIN |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protection of microcontroller I/O and CAN transceiver lines against load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to limit voltage excursions to safe levels. Use Value: Withstands 1500 W surges and operates up to +185 °C, ensuring robustness in under-hood ECU environments. | Use Scenario: Guarding gate driver inputs and feedback signal paths in variable-frequency drives exposed to motor back-EMF spikes. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed adjacent to optocoupler or isolated amplifier inputs. Use Value: 25.2 V clamping voltage prevents latch-up in 24 V control logic while maintaining <1.0 μA leakage at 15.3 V standby. |
| Automotive Radar Sensor Module | Telecom Power Supply Input Stage |
Use Scenario: Shielding RF front-end components and ADC reference lines from ESD events and board-level coupling noise. IC Role / Device Role / Timing Role: Low-capacitance TVS integrated into compact RF shielded enclosure with minimal parasitic impact. Use Value: 1.1 mm height allows co-location with MMICs; AEC-Q101 ensures qualification for ASIL-B functional safety domains. | Use Scenario: Secondary-side surge protection on 48 V telecom DC-DC converter outputs feeding sensitive baseband processors. IC Role / Device Role / Timing Role: Bidirectional clamping device installed between output rail and ground to absorb coupled lightning surges. Use Value: 1500 W PPPM rating meets GR-1089-CORE Level 3 immunity requirements without derating at elevated ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/57T | Unidirectional, 16 V VWM, 2500 W PPPM, DO-214AC package | Requires correct polarity orientation; higher power but larger footprint and no AEC-Q101 qualification | Select when unidirectional protection suffices and higher surge margin is needed in non-automotive industrial designs |
| TPC18CAHM3/I | Identical electrical specs; differs only in packaging - 13" tape-and-reel (6500 pcs) vs. 7" reel (1500 pcs) for TPC18CAHM3/H | No functional difference; used for high-volume SMT line loading where reel size impacts feeder compatibility | Choose TPC18CAHM3/I for large-batch production runs requiring extended reel life and reduced changeover frequency |
Compared with SMAJ16A-E3/57T and TPC18CAHM3/I, the TPC18CAHM3/H offers AEC-Q101 qualification and bidirectional operation in a low-profile SMPC package ideal for automotive sensor modules, whereas SMAJ16A-E3/57T trades qualification for higher power in a larger case, and TPC18CAHM3/I is functionally identical but optimized for different production logistics.
Availability
TPC18CAHM3/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive interfaces, and telecom power supply input stages requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant transient protection.
Supply support for TPC18CAHM3/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 TVS devices with emphasis on reliability, efficiency, and application-specific optimization.
The TPC18CAHM3/H belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for high-energy transient suppression in automotive, industrial, and communications infrastructure where thermal resilience and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum clamping voltage of the TPC18CAHM3/H under a 10/1000 μs surge?
The TPC18CAHM3/H has a maximum clamping voltage (VC) of 25.2 V when subjected to its rated peak pulse current of 59.5 A using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream circuitry remains within safe voltage limits during transient events.
Is the TPC18CAHM3/H qualified for automotive applications?
Yes, the TPC18CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance. It is explicitly intended for automotive use, including engine control, ADAS, and body electronics where reliability under thermal and mechanical stress is critical.
What does the "HM3" suffix mean in TPC18CAHM3/H?
The "HM3" suffix in TPC18CAHM3/H denotes Vishay's automotive-grade variant: halogen-free, RoHS-compliant, AEC-Q101 qualified, and meeting JESD201 Class 2 whisker resistance. The "/H" indicates packaging in 7-inch plastic tape-and-reel format with 1500 units per reel.
Can the TPC18CAHM3/H be used in bidirectional signal line protection?
Yes, the TPC18CAHM3/H is inherently bidirectional and requires no polarity marking or orientation during placement. It provides symmetrical clamping for both positive and negative transients, making it ideal for protecting differential buses like CAN, LIN, and RS-485 where signal polarity alternates.
What is the operating temperature range of the TPC18CAHM3/H?
The TPC18CAHM3/H operates across a junction temperature range of –65 °C to +185 °C and is rated for storage within the same interval. This wide range supports deployment in extreme environments such as under-hood automotive locations, industrial motor controls, and outdoor telecom equipment.
TPC18CAHM3/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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 59.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
TPC18CAHM3/H FAQ
1.How can I place an order for TPC18CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC18CAHM3/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 TPC18CAHM3/H reliable?
The price and inventory of TPC18CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC18CAHM3/H is usually 5 days.
3.What payment methods are accepted for TPC18CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC18CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC18CAHM3/H?
TPC18CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC18CAHM3/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 TPC18CAHM3/H?
For technical support, including TPC18CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC18CAHM3/H requirements.
6.How does Aetrix verify that TPC18CAHM3/H is sourced from the original manufacturer or authorized distributors?
All TPC18CAHM3/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 TPC18CAHM3/H meets industry standards.
7.What is the process for return or replacement of TPC18CAHM3/H?
All TPC18CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC18CAHM3/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 TPC18CAHM3/H part is unused and in its original packaging.
Return procedure for TPC18CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC18CAHM3/H Tags
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