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Vishay General Semiconductor - Diodes Division TPC20CAHM3/H
- Part No.:
- TPC20CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC20CAHM3/H.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPC20CAHM3/H from Vishay General Semiconductor is a bidirectional 1500 W transient voltage suppressor (TVS) in the SMPC (TO-277A) package, designed for high-reliability automotive and industrial electronics protection. It features a standoff voltage of 17.1 V, breakdown voltage range of 19.0–21.0 V at 1 mA, clamping voltage of 27.7 V at 54.2 A, and operates up to 185 °C junction temperature.
For engineers reviewing the TPC20CAHM3/H datasheet, TPC20CAHM3/H pinout, TPC20CAHM3/H application, or TPC20CAHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, MSL Level 1 rating, low-profile 1.1 mm height, bidirectional surge capability with 10/1000 μs waveform, and suitability for sensor signal line and MOSFET gate protection in harsh environments.
Technical Context
The TPC20CAHM3/H implements a junction-passivated PAR® design optimized for fast transient response and stable clamping under repetitive surge stress. Its bidirectional architecture enables symmetrical protection without polarity sensitivity, and it meets ANSI/IEEE C62.35 standards for surge current testing.
Rated for TJ = −65 °C to +185 °C, the device supports automotive-grade thermal cycling and solder reflow up to 260 °C peak. The SMPC package provides robust mechanical mounting and low-inductance terminals compatible with automated SMT placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VBR (min/max) | 19.0 V / 21.0 V at IT = 1 mA - ensures reliable breakdown initiation within defined tolerance band |
| VC @ IPPM | 27.7 V at 54.2 A - clamping voltage limits downstream IC stress during 10/1000 μs transients |
| PPPM | 1500 W - peak pulse power handling per single non-repetitive surge event |
| TJ max | +185 °C - enables operation in under-hood automotive and high-temperature industrial enclosures |
| Polarity | Bidirectional - protects AC-coupled or dual-rail signal paths without orientation dependency |
| MSL Level | Level 1 per J-STD-020 - allows unlimited floor life and standard reflow without baking |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Dimensions: 4.80 × 3.70 × 1.10 mm (L × W × H), matte tin-plated terminals, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Identical terminal function - no polarity marking required; interchangeable in circuit layout |
| Terminal 2 | Anode/Cathode (bidirectional) | Second symmetrical terminal; forms low-inductance clamp path across protected node |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation PAR® design | Enables stable VBR over lifetime and temperature, reducing parameter drift in automotive duty cycles |
| AEC-Q101 qualification | Validated for automotive electronics use including engine control, ADAS sensors, and body modules |
| 1.1 mm typical height | Reduces board profile for space-constrained modules such as camera ECUs and battery management systems |
| Low leakage ≤1 μA at VWM | Minimizes standby power loss in always-on sensor interfaces and low-power microcontrollers |
| Fast response time | Clamps transients within picoseconds - critical for protecting high-speed CAN, LIN, and I²C lines |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting analog output lines of ABS wheel speed sensors exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor output and ground to clamp ±200 V transients. Use Value: Prevents latch-up or damage to downstream ADC inputs while maintaining signal integrity below 17.1 V operating range. | Use Scenario: Safeguarding gate drive signals feeding IGBTs in variable-frequency drives subjected to EFT bursts. IC Role / Device Role / Timing Role: Clamping transient spikes on isolated gate driver outputs before reaching power stage. Use Value: Ensures gate oxide integrity by limiting voltage excursions to ≤27.7 V during 54.2 A surge events. |
| Consumer Power Adapter Outputs | Telecom Line Interface Protection |
Use Scenario: Shielding USB-C PD negotiation lines in compact wall adapters against ESD and surges during plug insertion. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on CC1/CC2 lines referenced to VCONN. Use Value: Maintains USB PD protocol timing integrity with <1 μA leakage and no signal distortion at 17.1 V standoff. | Use Scenario: Protecting RS-485 transceiver I/O pins in base station backhaul equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on differential bus lines, placed before common-mode choke. Use Value: Limits common-mode surge energy to safe levels (<27.7 V) without affecting 12 Mbps data transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-E3/5A | Unidirectional; 17 V VWM; SMA package; 400 W PPPM; lower surge rating | Requires external polarity awareness; unsuitable for AC-coupled or floating nodes | Select when cost-sensitive, low-energy, unidirectional protection suffices and PCB space permits larger SMA footprint |
| TPC22CAHM3/H | Higher VBR (20.9–23.1 V); 18.8 V VWM; 30.6 V VC; same package and qualification | Used where higher standoff is needed to avoid false triggering near 18 V rail systems | Choose for 18–20 V nominal supply rails requiring tighter margin between VWM and system overvoltage threshold |
Compared with SMAJ17A-E3/5A and TPC22CAHM3/H, the TPC20CAHM3/H offers optimal balance of 17.1 V standoff, 27.7 V clamping, and 1500 W surge capacity in the compact SMPC package-making it preferred for automotive sensor interfaces where bidirectionality, AEC-Q101 compliance, and space constraints converge.
Availability
TPC20CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive inputs, and telecom line interface protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for TPC20CAHM3/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 and automotive-grade performance.
The TPCxxCA series belongs to Vishay's PAR® TVS platform, engineered specifically for high-energy, bidirectional transient suppression in automotive and industrial environments where AEC-Q101 compliance and thermal resilience are mandatory.
FAQ
What is the maximum clamping voltage of the TPC20CAHM3/H under surge conditions?
The TPC20CAHM3/H has a maximum clamping voltage (VC) of 27.7 V when subjected to its rated peak pulse current of 54.2 A using the 10/1000 μs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during transient events. The TPC20CAHM3/H maintains this clamping performance across its full operating temperature range and after repeated surge exposures due to its junction-passivated PAR® structure.
Is the TPC20CAHM3/H suitable for automotive applications?
Yes, the TPC20CAHM3/H is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and chassis-mounted automotive applications. Its HM3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance. The TPC20CAHM3/H is widely deployed in ADAS sensor modules, body control units, and powertrain subsystems where bidirectional transient immunity is required.
What does the "HM3" suffix mean in TPC20CAHM3/H?
The "HM3" suffix in TPC20CAHM3/H denotes Vishay's automotive-qualified variant: halogen-free, RoHS-compliant, AEC-Q101 qualified, and tested to JESD201 Class 2 for tin whisker resistance. The "/H" indicates packaging in 7-inch tape-and-reel format with 1500 units per reel. This full ordering code ensures traceability, material compliance, and process consistency required for automotive production. The TPC20CAHM3/H meets all these specifications as verified in Vishay document 87649.
How does the TPC20CAHM3/H compare to unidirectional TVS diodes like SMAJ17A?
The TPC20CAHM3/H differs fundamentally from unidirectional devices like SMAJ17A by offering symmetrical clamping for both positive and negative transients without polarity dependency. It delivers 1500 W peak power versus SMAJ17A's 400 W, uses the smaller SMPC package instead of SMA, and is AEC-Q101 qualified. The TPC20CAHM3/H is preferred where AC-coupled signals, floating grounds, or bidirectional data lines require protection - unlike SMAJ17A, which requires correct orientation and cannot protect negative-going surges on positive rails.
What is the thermal derating behavior of the TPC20CAHM3/H above 25 °C ambient?
The TPC20CAHM3/H follows standard TVS derating: peak pulse power decreases linearly above TA = 25 °C, reaching ~50 % of rated 1500 W at TJ ≈ 125 °C and zero at +185 °C. Derating curves are provided in Figure 2 of Vishay document 87649. Designers must calculate worst-case junction temperature-including power dissipation, PCB copper area, and airflow-to ensure the TPC20CAHM3/H remains within its safe operating area during surge events. The TPC20CAHM3/H's 185 °C TJ max enables operation in high-ambient environments where lesser-rated devices would fail.
TPC20CAHM3/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):
- 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 ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
TPC20CAHM3/H FAQ
1.How can I place an order for TPC20CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC20CAHM3/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 TPC20CAHM3/H reliable?
The price and inventory of TPC20CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC20CAHM3/H is usually 5 days.
3.What payment methods are accepted for TPC20CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC20CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC20CAHM3/H?
TPC20CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC20CAHM3/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 TPC20CAHM3/H?
For technical support, including TPC20CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC20CAHM3/H requirements.
6.How does Aetrix verify that TPC20CAHM3/H is sourced from the original manufacturer or authorized distributors?
All TPC20CAHM3/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 TPC20CAHM3/H meets industry standards.
7.What is the process for return or replacement of TPC20CAHM3/H?
All TPC20CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC20CAHM3/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 TPC20CAHM3/H part is unused and in its original packaging.
Return procedure for TPC20CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC20CAHM3/H Tags
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