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Product Overview
GBJ2510 is a 25A 1000V single-phase bridge rectifier in the 6KBJ package. It provides full-wave AC-to-DC rectification for industrial power supplies and charger input stages with a defined heatsink arrangement.
The 25A operating point requires a heatsink and Tc = 110°C. Two diode junctions conduct in each rectified current path, so bridge-loss calculations must include both forward drops.
Key Features
● 1000V repetitive peak reverse voltage with a 25A current rating.
● 6KBJ four-terminal package with integrated full-wave rectification.
● 1.1V maximum forward voltage at 12.5A and 25°C.
● 320A non-repetitive surge current for a 8.3ms pulse.
Key Specifications
| Parameter | Value and conditions |
| Configuration / package | Single-phase full-wave bridge / 6KBJ |
| Forward current | 25A at Tc = 110°C; with heatsink |
| Repetitive peak reverse voltage | 1000V |
| Forward voltage | 0.87V typ at IF = 12.5A, Tj = 125°C 1.1V max at IF = 12.5A, Tj = 25°C |
| Terminal to case dielectric strength | 2500VAC; 1 minute |
| Surge current | 320A; non-repetitive, t = 8.3ms |
| Junction to case thermal resistance | 1.0°C/W |
| Junction temperature range | −55°C to +150°C |
Current capability depends on case temperature and cooling. Use the datasheet derating curve when determining operating current.
Electrical Configuration and Pinout
The two terminals marked ~ accept the AC input. The + and − terminals provide the rectified DC output. Follow the polarity markings and the package drawing when laying out the PCB; GBJ and GBU lead arrangements differ.
Figure 1. Single-phase full-wave bridge circuit. The terminal symbols correspond to the package markings.
| Connection | Function |
| Terminal marked + | Positive rectified DC output |
| First terminal marked ~ | AC input |
| Second terminal marked ~ | AC input |
| Terminal marked − | Negative rectified DC output |
Typical Applications
● Industrial AC-DC power supplies.
● Charger input stages.
● Cabinet-mounted DC-link charging circuits.
25A Mains Rectification in the GBJ Format
The GBJ mounting format suits assemblies where the bridge is secured to a cooling surface. Its 25A rating at a 110°C case temperature provides a defined operating point for moderate-current AC front ends.
Design Notes
The 25A rating requires a heatsink at Tc = 110°C. Include both conducting junctions, the input-current waveform and capacitor-charging pulses in the loss and thermal calculations.
The 2500VAC value is a one-minute terminal-to-case dielectric test. It does not provide galvanic isolation between AC input and DC output. Follow the mounting drawing and include the external thermal interface in the cooling calculation.
The 320A IFSM specification applies to a non-repetitive 8.3ms event. Review inrush limiting, restart conditions, terminal temperature and conductor capacity for the complete input stage.
FAQ
No. Although both are 25 A and 1000 V products, the supplied sheets show different packages, surge ratings, free-air ratings, and mechanical data. Treat any change as a redesign check.
Choose it when the mounting-hole geometry, thermal interface, lead arrangement, or standardized chassis offers a system benefit.
Match the real inrush waveform to the datasheet pulse condition and derating curves. It is not a repetitive RMS current rating.
No. Use the current datasheet, mechanical drawing, compliance records, and application test results.
