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Vishay General Semiconductor - Diodes Division 20CTH03FP
- Part No.:
- 20CTH03FP
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack
- Datasheet:
-
20CTH03FP.pdf
- Description:
- DIODE ARRAY GP 300V 10A TO220FP
- Quantity:
- Payment:
- Shipping:
Inventory:5,933
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Product details
Overview
20CTH03FP from Vishay is a hyperfast dual common-cathode rectifier in TO-220 FULL-PAK package, rated for 300 V reverse voltage, 10 A average forward current per diode (20 A total device), and 35 ns maximum reverse recovery time. It features platinum-doped lifetime control, 175 °C junction temperature rating, and 2500 VRMS isolation for industrial power conversion stages.
For engineers reviewing the 20CTH03FP datasheet, 20CTH03FP pinout, 20CTH03FP application, or 20CTH03FP equivalent, key selection criteria include its low VF (1.05–1.25 V at 10 A, 25 °C), ultra-low Qrr (36 nC typ. at 25 °C), rugged FRED Pt™ construction, and thermal resistance of 3.9 °C/W (junction-to-case per diode).
Technical Context
This dual-diode common-cathode rectifier uses planar silicon with platinum diffusion to achieve hyperfast recovery while maintaining low forward voltage and leakage. Its dynamic performance is characterized by trr ≤ 35 ns (IF = 1 A, dIF/dt = 50 A/µs) and IRRM ≤ 5.6 A at 125 °C - critical for minimizing switching losses in high-frequency SMPS.
The TO-220 FULL-PAK package provides full electrical isolation (VINS = 2500 VRMS) and is qualified for industrial-level reliability. Thermal design is supported by RthJC = 3.9 °C/W per diode and a 175 °C max TJ, enabling operation under sustained high-power loads without derating beyond specified case temperature limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - supports DC bus voltages up to 300 V in offline SMPS and motor drive freewheeling paths |
| IF(AV) per diode | 10 A at TC = 135 °C - enables 20 A total output rectification capacity with shared cathode topology |
| trr (max) | 35 ns - reduces turn-off switching loss and EMI generation in >100 kHz converters |
| VF @ 10 A, 25 °C | 1.05–1.25 V - lowers conduction loss and thermal stress compared to standard fast recovery diodes |
| Qrr (typ) | 36 nC at 25 °C - minimizes snubber dissipation and stress on synchronous MOSFETs or IGBTs |
| RthJC per diode | 3.9 °C/W - allows direct heatsink mounting without insulating pads while maintaining safe TJ < 175 °C |
| TJ max | 175 °C - supports continuous operation in industrial environments with elevated ambient temperatures |
Pinout & Package
20CTH03FP is housed in a TO-220 FULL-PAK package with electrically isolated tab (VINS = 2500 VRMS), designed for industrial-level reliability and surface-mount-compatible through-hole assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode 1) | Input anode for first diode | Connects to high-side switch node (e.g., MOSFET drain) in half-bridge or dual-output rectification |
| 2 (Common Cathode) | Shared cathode terminal | Single low-impedance return path for both diodes; connects directly to output capacitor negative or ground plane |
| 3 (Anode 2) | Input anode for second diode | Enables independent input routing for dual-channel or interleaved converter topologies |
Key Features
| Feature | Design Value |
|---|---|
| Hyperfast recovery time | trr ≤ 35 ns ensures minimal tail current during hard switching, reducing cross-conduction risk in synchronous rectifiers |
| Platinum-doped lifetime control | Delivers stable, predictable Qrr and trr across temperature and current, eliminating parameter drift in thermal cycling |
| Fully isolated package | VINS = 2500 VRMS enables direct heatsink mounting without insulation hardware, simplifying mechanical layout and thermal management |
| 175 °C operating junction temperature | Supports sustained operation in enclosed industrial enclosures or high-ambient environments without forced air cooling |
| Low leakage current | IR ≤ 20 µA at VR = 300 V, 25 °C - maintains efficiency in standby and light-load conditions |
Applications
| Server PSU Output Rectification | Industrial DC-DC Converter |
|---|---|
|
Use Scenario: High-efficiency 48 V output stage in 1U server power supplies operating at 200–500 kHz switching frequency. IC Role / Device Role / Timing Role: Dual common-cathode output rectifier replacing two discrete diodes to reduce PCB area and parasitic inductance. Use Value: 35 ns trr and 36 nC Qrr cut switching losses by ≥25% vs. standard fast recovery diodes, improving full-load efficiency to >95%. |
Use Scenario: Isolated 24 V/15 A auxiliary supply in programmable logic controller (PLC) backplanes. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter with 120 kHz PWM and 175 °C ambient requirement. Use Value: 175 °C TJ rating and 3.9 °C/W RthJC allow operation without fan cooling in sealed enclosures, reducing system BOM cost. |
| UPS Inverter Freewheeling | Chopper Motor Drive |
|
Use Scenario: Bidirectional freewheeling path in online UPS inverters handling 300 V DC bus and regenerative braking energy. IC Role / Device Role / Timing Role: Common-cathode clamp diode absorbing inductive kickback during IGBT turn-off. Use Value: Low IR (≤20 µA) prevents reverse conduction losses during zero-crossing intervals, extending battery runtime by ~3.2%. |
Use Scenario: Arm-level freewheeling in 48 V brushed DC motor chopper drives used in material handling equipment. IC Role / Device Role / Timing Role: Dual-anode rectifier supporting independent phase winding control with shared cathode return. Use Value: TO-220 FULL-PAK isolation eliminates need for mica washers, reducing assembly time and thermal interface resistance by 40%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hyperfast dual-diode rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH20L03CG | Same 300 V / 2 × 10 A rating but TO-220AB package (non-isolated); RthJC = 1.5 °C/W per diode; trr = 30 ns typical | Requires insulated mounting hardware; better thermal performance but higher assembly complexity in isolated designs | Preferred where heatsink isolation is already implemented and lower RthJC justifies added insulation labor |
| IXYS MBR2030CT | Schottky construction; VF = 0.75 V typ. at 10 A but VR = only 30 V; no reverse recovery (trr = 0 ns) | Limited to low-voltage (<48 V) DC-DC; unsuitable for 300 V bus applications due to breakdown rating | Only viable for sub-48 V systems where ultra-low VF outweighs voltage limitation |
Compared with STTH20L03CG and MBR2030CT, the 20CTH03FP uniquely balances 300 V capability, hyperfast recovery, full package isolation, and industrial temperature rating - making it the sole option for isolated, high-voltage, high-reliability freewheeling in harsh environments.
Availability
20CTH03FP is available at Aetrix Electronics and suitable for server power supplies, industrial DC-DC converters, and UPS inverter freewheeling requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 20CTH03FP 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in high-reliability power semiconductors.
The 20CTH03FP belongs to Vishay's FRED Pt™ Hyperfast Rectifier product line, engineered specifically for high-frequency, high-efficiency power conversion in industrial, computing, and telecom infrastructure.
FAQ
What is the maximum junction temperature rating for the 20CTH03FP?
The 20CTH03FP has a maximum operating junction temperature of 175 °C, verified per Vishay Document Number 93010. This rating enables reliable operation in high-ambient industrial environments and allows extended thermal headroom during transient overloads. The 20CTH03FP must be mounted to a heatsink capable of maintaining TC ≤ 135 °C to sustain its full 10 A per diode rating.
Is the 20CTH03FP pin-compatible with the 20CTH03 (TO-220AB)?
No - the 20CTH03FP uses TO-220 FULL-PAK packaging with fully isolated tab and different mechanical footprint, while the 20CTH03 uses TO-220AB with conductive tab. Pin numbering is identical (Anode1–Cathode–Anode2), but mounting and isolation requirements differ. The 20CTH03FP cannot be substituted for the 20CTH03 without PCB and thermal redesign.
What is the reverse recovery charge (Qrr) of the 20CTH03FP at 125 °C?
Per Vishay Document Number 93010, the 20CTH03FP exhibits a typical Qrr of 120 nC at TJ = 125 °C, IF = 10 A, and VR = 200 V. This value is critical for estimating snubber losses and IGBT/MOSFET turn-off stress in high-frequency inverters. The 20CTH03FP's Qrr increases predictably with temperature due to platinum doping stability.
Does the 20CTH03FP meet AEC-Q101 qualification?
No - the 20CTH03FP is qualified for industrial-level reliability per Vishay documentation. Only the TO-220AB version (20CTH03) is explicitly stated as AEC-Q101 qualified. The 20CTH03FP's qualification scope covers industrial operating conditions including 175 °C TJ and 2500 VRMS isolation, but not automotive stress testing protocols.
What is the thermal resistance junction-to-case for each diode in the 20CTH03FP?
The 20CTH03FP has a thermal resistance of RthJC = 3.9 °C/W per diode, measured from junction to case with flat, smooth, greased mounting surface. This value applies individually to each of the two diodes and is essential for calculating allowable case temperature when designing heatsinks for 20CTH03FP-based power stages.
20CTH03FP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- FRED Pt®
- Package/Case:
- TO-220-3 Full Pack
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 20 µA @ 300 V
- Operating Temperature - Junction:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220 Full Pack
20CTH03FP FAQ
1.How can I place an order for 20CTH03FP through Aetrix?
Please submit a Request for Quotation (RFQ) for 20CTH03FP 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 20CTH03FP reliable?
The price and inventory of 20CTH03FP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 20CTH03FP is usually 5 days.
3.What payment methods are accepted for 20CTH03FP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 20CTH03FP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 20CTH03FP?
20CTH03FP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 20CTH03FP 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 20CTH03FP?
For technical support, including 20CTH03FP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 20CTH03FP requirements.
6.How does Aetrix verify that 20CTH03FP is sourced from the original manufacturer or authorized distributors?
All 20CTH03FP 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 20CTH03FP meets industry standards.
7.What is the process for return or replacement of 20CTH03FP?
All 20CTH03FP units undergo pre-shipment inspection (PSI). If there is an issue with 20CTH03FP, 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 20CTH03FP part is unused and in its original packaging.
Return procedure for 20CTH03FP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
20CTH03FP Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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onsemi
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
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BAT54S,215
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BAS40-04LT1G
onsemi
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MMBD1503-TP
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BAV99WT1G
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