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Vishay General Semiconductor - Diodes Division TPC20AHM3_A/H
- Part No.:
- TPC20AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC20AHM3_A/H.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,278
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Product details
Overview
TPC20AHM3_A/H from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, designed for high-reliability circuit protection. It features a standoff voltage of 17.1 V, breakdown voltage range of 19.0–21.0 V at 1.0 mA test current, clamping voltage of 27.7 V at 54.2 A peak pulse current, and operates up to +185 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial power electronics.
For engineers reviewing the TPC20AHM3_A/H datasheet, TPC20AHM3_A/H pinout, TPC20AHM3_A/H application, or TPC20AHM3_A/H equivalent, key selection criteria include unidirectional clamping performance, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, low-profile 1.1 mm height, and compatibility with automated SMT placement on high-temperature PCBs.
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 10/1000 µs surge pulses. Its unidirectional architecture enables integration into DC power rails and signal paths where reverse conduction must be blocked.
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), supports 3.5 V maximum forward voltage at 100 A, and maintains reliable operation across -65 °C to +185 °C junction temperature range-meeting automotive-grade thermal and reliability requirements per AEC-Q101.
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 kick scenarios |
| Standoff Voltage (VWM) | 17.1 V - defines maximum continuous operating voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 19.0–21.0 V at 1.0 mA - precise threshold for initiating clamping during overvoltage events |
| Clamping Voltage (VC) | 27.7 V at 54.2 A IPPM - limits downstream voltage stress to protected components during surge |
| Junction Temperature Range | -65 °C to +185 °C - enables deployment in under-hood automotive and industrial environments |
| Package | TO-277A (SMPC) - surface-mount, low-profile (1.1 mm height), AEC-Q101 qualified, halogen-free |
| Moisture Sensitivity Level | MSL Level 1 - no bake requirement prior to reflow, compatible with standard SMT assembly |
Pinout & Package
TO-277A (SMPC) package with three terminals: Anode (Pin 1), Cathode 1 (Pin 2), Cathode 2 (Pin A). Matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards; HM3 suffix indicates JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | DC input / power rail connection | Connected to protected line; conducts during forward-biased surge conditions |
| Cathode 1 (Pin 2) | Primary clamping output | Provides low-impedance path to ground during transient events; tied to system GND |
| Cathode 2 (Pin A) | Secondary clamping output | Parallel cathode terminal enhancing current sharing and thermal distribution under high IPPM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| 185 °C junction capability | Enables use in high-temperature zones without derating or thermal margin loss |
| Very low profile (1.1 mm typical height) | Reduces board stack height and improves airflow in dense power modules |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| Uni-directional only configuration | Prevents reverse conduction in DC-biased rails while delivering robust forward clamping |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protection of microcontroller I/O and gate driver inputs against load dump and inductive flyback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between supply rail and ground near sensitive logic inputs. Use Value: Limits transient voltage to ≤27.7 V during 54.2 A surges, preserving MCU integrity without adding series impedance. |
Use Scenario: Safeguarding half-bridge gate drivers and current sense amplifiers from switching noise and cross-conduction spikes. IC Role / Device Role / Timing Role: Rail-to-ground clamping element on 24 V auxiliary supply and signal return paths. Use Value: Fast <1 ns response prevents latch-up in CMOS interfaces; 185 °C rating matches motor drive thermal environment. |
| Telecom Base Station Power Supply | Consumer Appliance Mainboard DC-DC Input |
Use Scenario: Mitigating lightning-induced surges on 48 V backplane rails feeding RF power amplifiers and baseband processors. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of DC-DC converters and PMICs. Use Value: 1500 W peak power rating handles multi-pulse surge stress; MSL Level 1 ensures manufacturability in high-volume telecom assembly. |
Use Scenario: Protecting buck converter controllers and Hall-effect sensors from ESD and relay bounce in washing machine mainboards. IC Role / Device Role / Timing Role: Localized clamping on 12 V/5 V internal rails adjacent to mechanical switches and motors. Use Value: Halogen-free, RoHS-compliant TO-277A package meets global environmental compliance; low leakage (<1 µA at VWM) avoids standby current penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-E3/57T (Vishay) | Same 17 V VWM but lower 400 W PPPM rating; DO-214AC package; 1.78 mm height | Limited to lower-energy transients; less suitable for automotive load dump | Select when cost or legacy footprint drives preference over 1500 W surge capacity |
| TPC20AHM3_A/I (Vishay) | Identical electrical specs; differs only in packaging-13" tape/reel (6500 pcs) vs. 7" reel (1500 pcs) | No functional or design impact; purely logistics-driven variant | Choose based on production volume and SMT line feeder compatibility |
Compared with SMAJ17A-E3/57T and TPC20AHM3_A/I, the TPC20AHM3_A/H delivers full 1500 W surge immunity in a lower-profile (1.1 mm), AEC-Q101-qualified package-making it optimal for space-constrained, high-reliability automotive and industrial designs where both energy handling and thermal robustness are critical.
Availability
TPC20AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, telecom power supplies, and consumer appliance mainboards requiring stable component supply and long-term lifecycle support.
Supply support for TPC20AHM3_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 devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The TPC20AHM3_A/H belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for automotive-grade transient suppression in harsh thermal and electrical environments.
FAQ
What is the clamping voltage of the TPC20AHM3_A/H at its rated peak pulse current?
The TPC20AHM3_A/H has a maximum clamping voltage (VC) of 27.7 V when subjected to its rated peak pulse current (IPPM) of 54.2 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components remain within safe voltage limits during surge events. The TPC20AHM3_A/H achieves this with low incremental surge resistance and fast response time.
Is the TPC20AHM3_A/H qualified for automotive applications?
Yes, the TPC20AHM3_A/H is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and powertrain applications. Its TO-277A (SMPC) package meets JESD 201 Class 2 whisker resistance and MSL Level 1 requirements-key criteria for automotive manufacturing. The TPC20AHM3_A/H is explicitly listed in Vishay's automotive-grade product documentation.
What does the "HM3_A/H" suffix indicate in TPC20AHM3_A/H?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified molding compound and plating process. The "A" is the revision code; "H" specifies the preferred package code for 7-inch tape-and-reel delivery (1500 units per reel). The TPC20AHM3_A/H thus combines material compliance, qualification status, and logistics configuration in its full part number.
How does the dual-cathode configuration of the TPC20AHM3_A/H improve performance?
The TPC20AHM3_A/H features two cathode terminals (Pin 2 and Pin A) in parallel, reducing effective surge path resistance and improving thermal distribution during high-current transients. This dual-cathode layout lowers incremental surge resistance and enhances current sharing-critical for maintaining clamping stability at 54.2 A IPPM. The TPC20AHM3_A/H leverages this structure to achieve consistent 27.7 V VC without thermal runaway.
Can the TPC20AHM3_A/H replace older SMAJ or SMCJ series TVS diodes?
The TPC20AHM3_A/H is not a direct drop-in replacement for SMAJ or SMCJ series due to different package (TO-277A vs. DO-214AC/DO-214AB) and higher power rating (1500 W vs. 400 W/1500 W). While electrically comparable at 17.1 V VWM, its lower profile (1.1 mm), AEC-Q101 qualification, and dual-cathode design require PCB layout review. The TPC20AHM3_A/H offers superior performance but needs mechanical validation before substitution.
TPC20AHM3_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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 54.2A
- 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)
TPC20AHM3_A/H FAQ
1.How can I place an order for TPC20AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC20AHM3_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 TPC20AHM3_A/H reliable?
The price and inventory of TPC20AHM3_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 TPC20AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPC20AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC20AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC20AHM3_A/H?
TPC20AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC20AHM3_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 TPC20AHM3_A/H?
For technical support, including TPC20AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC20AHM3_A/H requirements.
6.How does Aetrix verify that TPC20AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPC20AHM3_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 TPC20AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPC20AHM3_A/H?
All TPC20AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC20AHM3_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 TPC20AHM3_A/H part is unused and in its original packaging.
Return procedure for TPC20AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC20AHM3_A/H Tags
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Diodes Incorporated
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Diodes Incorporated
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