STTH50W03CW STMicroelectronics Diode with Dual Anode (Transistor Outline, Vertical) In Stock
The STTH50W03CW is a high-voltage, ultra-fast recovery silicon rectifier diode with common cathode dual-anode configuration, rated at 300 V and 50 A forward current with a maximum forward voltage of 1.8 V. Its soft recovery factor of 0.3 minimizes EMI in high-power switching applications. Housed in a TO-247 package, with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- STTH50W03CW Datasheet PDF
- Category
- Diode with Dual Anode
- Temp Range
- ?°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-fast recovery with soft recovery factor 0.3 minimizing EMI and voltage spikes in high-frequency power converters
- 50 A forward current capability at 300 V blocking voltage for high-power rectification in industrial converters
- Common cathode dual-anode TO-247 package enabling space-efficient full-wave rectifier configurations with a single component
Applications
The STTH50W03CW is suited for high-power boost PFC stages, inverter output rectifiers, and freewheeling diode applications in industrial motor drives and UPS systems operating at 300 V bus voltages. Its 50 A current rating and ultra-fast soft recovery make it effective in switching power supplies and resonant converters where diode reverse recovery directly impacts switching losses and EMI. Solar inverters and welding power sources also benefit from its low 1.8 V maximum forward voltage and rugged TO-247 packaging.
Specifications
| Factory Lead Time | 25Weeks |
| YTEOL | 5.43 |
| Additional Feature | SOFT FACTOR IS 0.3 |
| Application | HIGH VOLTAGE ULTRA FAST RECOVERY HIGH POWER |
| Configuration | COMMON CATHODE, 2 ELEMENTS |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 1.8V |
| JEDEC-95 Code | TO-247 |
| JESD-30 Code | R-PSFM-T3 |
| Non-rep Pk Forward Current-Max | 200A |
| Number of Elements | 2 |
| Number of Phases | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Rep Pk Reverse Voltage-Max | 300V |
| Reverse Current-Max | 15 µA |
| Reverse Recovery Time-Max | 0.027 µs |
| Surface Mount | NO |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What forward current and blocking voltage does the STTH50W03CW support?
The STTH50W03CW is rated for 50 A average forward current and 300 V repetitive peak reverse voltage, making it suitable for high-power rectification in industrial power converters, UPS systems, and motor drive inverters. Its maximum forward voltage of 1.8 V at 50 A limits conduction losses compared to standard recovery diodes with forward voltages exceeding 2 V.
How does the soft recovery factor of 0.3 benefit switching power supply EMI performance?
A soft recovery factor of 0.3 means the STTH50W03CW's reverse recovery current tail decays gradually rather than abruptly, reducing the di/dt that generates voltage spikes and radiated EMI on the PCB. In boost PFC converters operating at 50 kHz to 200 kHz, this characteristic lowers conducted emissions and reduces snubber requirements, shrinking overall system cost.
What is the common cathode configuration of STTH50W03CW and how is it used?
The STTH50W03CW integrates 2 diode elements in a common cathode configuration within a single TO-247 package. With both anodes available and the cathode shared at the package tab, it forms a full-wave center-tap rectifier directly from a transformer secondary winding without additional discrete components, saving PCB space and simplifying heat sink mounting.
In which high-power applications is the STTH50W03CW a preferred choice over standard recovery diodes?
The STTH50W03CW's ultra-fast recovery time, soft recovery factor of 0.3, and 50 A rating make it preferable to standard recovery diodes in PFC boost stages, server power supplies above 1 kW, solar string inverters, and welding machines where switching frequencies above 20 kHz cause standard diodes to produce excessive reverse recovery losses and EMI that fails regulatory limits.
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