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Product Overview
GBU1510 provides a 15A cooled current rating and 1000V reverse blocking in a slim GBU package. It suits compact appliance boards, control supplies and moderate-current industrial AC inputs.
The 15A 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 15A current rating.
● GBU four-terminal package with integrated full-wave rectification.
● 1.1V maximum forward voltage at 7.5A and 25°C.
● 225A non-repetitive surge current for a 8.3ms pulse.
Key Specifications
| Parameter | Value and conditions |
| Configuration / package | Single-phase full-wave bridge / GBU |
| Forward current | 15A at Tc = 110°C; with heatsink |
| Repetitive peak reverse voltage | 1000V |
| Forward voltage | 0.85V typ at IF = 7.5A, Tj = 125°C 1.1V max at IF = 7.5A, Tj = 25°C |
| Terminal to case dielectric strength | 2500VAC; 1 minute |
| Surge current | 225A; non-repetitive, t = 8.3ms |
| Junction to case thermal resistance | 1.8°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
● Compact appliance power boards.
● Enclosed industrial control supplies.
● Moderate-current mains AC-DC inputs.
15A Full Wave Rectification in a Slim Body
The narrow GBU body is useful where board profile and package clearance constrain bridge selection. Its 15A heatsink-rated operating point suits designs that do not need a higher-current bridge.
Design Notes
The 15A 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 225A 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
Choose the 15 A part when the steady-state current, inrush, and thermal calculation fit its limits. Compare the quoted cost and calculated thermal margin for the actual load.
No. It is a non-repetitive 8.3 ms pulse value. Recurrent inrush or overload events must be evaluated with the surge curves and junction temperature.
The datasheet lists 3.2 A at 25°C (PDF labels this Tc) without a heatsink. Board temperature and airflow can reduce the available margin.
State the full model, lead variant, annual quantity, target line voltage, load current, inrush method, cooling arrangement, and any required compliance documents.
