Cincon CQB75-300S Industrial 75W Quarter-Brick DC-DC Converter 180-450V Input
The CINCON CQB75-300S series is an industrial-grade 75W isolated DC-DC converter featuring a 2:1 wide-voltage input range and quarter-brick packaging, specifically engineered for demanding applications in rail transit, automotive systems, power infrastructure, military equipment, and related industries.

Model parameters
| Part Number | Input Voltage | Output Voltage | Output Current | No load Input Current | Efficiency (%) | I/O Isolation Voltage | Package |
| CQB75-300S3V3 | 180~450V | 3.3V | 15A | 10mA | 81.5 | 3000VAC | Quarter Brick |
| CQB75-300S05 | 180~450V | 5V | 15A | 10mA | 82 | 3000VAC | Quarter Brick |
| CQB75-300S12 | 180~450V | 12V | 6.25A | 10mA | 88 | 3000VAC | Quarter Brick |
| CQB75-300S15 | 180~450V | 15V | 5A | 10mA | 89.5 | 3000VAC | Quarter Brick |
| CQB75-300S24 | 180~450V | 24V | 3.12A | 10mA | 90 | 3000VAC | Quarter Brick |
| CQB75-300S48 | 180~450V | 48V | 1.56A | 10mA | 89 | 3000VAC | Quarter Brick |
| CQB75-300S3V3N | 180~450V | 3.3V | 15A | 10mA | 81.5 | 3000VAC | Quarter Brick |
| CQB75-300S05N | 180~450V | 5V | 15A | 10mA | 82 | 3000VAC | Quarter Brick |
| CQB75-300S12N | 180~450V | 12V | 6.25A | 10mA | 88 | 3000VAC | Quarter Brick |
| CQB75-300S15N | 180~450V | 15V | 5A | 10mA | 89.5 | 3000VAC | Quarter Brick |
| CQB75-300S24N | 180~450V | 24V | 3.12A | 10mA | 90 | 3000VAC | Quarter Brick |
| CQB75-300S48N | 180~450V | 48V | 1.56A | 10mA | 89 | 3000VAC | Quarter Brick |
Key Specifications:
Input Voltage Range: 180–450 VDC (nominal 300 VDC)
Output Power: 75 W
Efficiency: Up to 90%
Dimensions: 2.28 × 1.45 × 0.5 inches
Isolation Rating: 3000 VAC (input to output)
Protection Features: Over-Temperature Protection (OTP), Overcurrent Protection (OCP), Overvoltage Protection (OVP), and Undervoltage Lockout (UVLO)
Operating Temperature Range:
- Standard Version: –40 °C to +105 °C
- Military Version: –55 °C to +105 °C
Typical Applications: Industrial automation, rail transit systems, telecommunications equipment, and high-altitude environments (up to 3000 meters).
CINCON is a TAIWAN brand, we are the distributors, If you want to know more about CINCON DC-DC power modules, you can contact CORE.



