UF4007-E3/54: High-Performance General Purpose Diode - In-Depth Guide

Introduction to UF4007-E3/54

The UF4007-E3/54 is a premium-grade general-purpose diode designed for engineers seeking reliability in high-voltage and fast-switching applications. Manufactured by General Semiconductor, a globally recognized leader in diode technology, this component stands out for its exceptional electrical characteristics and rugged construction.

Technical Specifications Breakdown

Voltage and Current Ratings

• 1000V Reverse Voltage (Vr): Withstands high-voltage spikes in power circuits
• 1A Average Forward Current (Io): Handles substantial current flow with minimal loss
• 1.7V Forward Voltage (Vf @ 1A): Low voltage drop enhances energy efficiency

Switching Performance

• Ultra-Fast 75ns Recovery Time: Ideal for high-frequency switching applications
• 17pF Low Capacitance: Minimizes signal distortion in RF circuits
• 10 A Leakage Current: Exceptional reverse blocking capability

Physical Characteristics

• DO-41 Package (DO-204AL): Industry-standard axial leaded package
• -55 C to +150 C Operating Range: Suitable for extreme environments
• Lead-Free & RoHS Compliant: Meets environmental regulations

Detailed Performance Analysis

Reverse Recovery Characteristics

The UF4007-E3/54's 75ns recovery time makes it significantly faster than standard rectifiers (typically 250-500ns). This fast recovery feature reduces switching losses in:

• Switch-mode power supplies (SMPS)
• High-frequency DC-DC converters
• PWM motor drives
• Inverter circuits

Thermal Management

With a 150 C maximum junction temperature, the diode maintains stable operation even in high-ambient conditions. The axial package design promotes excellent heat dissipation when properly mounted.

Comparative Advantages

Feature	UF4007-E3/54	Standard 1N4007
Recovery Time	75ns	2-3 s
Reverse Leakage	10 A	5 A
Package	DO-41	DO-41
Price Point	Mid-range	Budget

Application Circuits

Power Supply Design Example

In a 12V/1A AC-DC converter:

1. Used in bridge rectifier configuration
2. Handles 120Hz ripple current effectively
3. Low Vf reduces transformer requirements

Snubber Circuit Implementation

When protecting MOSFETs/IGBTs:

• Fast recovery minimizes ringing
• High Vr rating handles voltage transients
• 17pF capacitance doesn't load the circuit

Purchasing Considerations

• Available through authorized distributors like Digi-Key, Mouser
• Typical pricing: $0.15-$0.30/unit in volume
• Alternative options: UF4001-UF4007 series for lower voltage needs

Frequently Asked Questions

Q: Can UF4007-E3/54 replace 1N4007?

A: Yes, with superior performance in switching applications, though at slightly higher cost.

Q: What's the maximum surge current?

A: 30A non-repetitive surge capability (8.3ms single half-sine-wave).

Q: Is it suitable for 50/60Hz rectification?

A: Absolutely, though overqualified - standard 1N4007 may be more cost-effective.

Conclusion

The UF4007-E3/54 represents the optimal balance between performance and value for designers needing:

• High voltage capability
• Fast switching characteristics
• Proven reliability

For engineers upgrading from standard rectifiers or designing new power electronics systems, this diode delivers measurable improvements in efficiency and thermal performance.