Product Overview
The Yokogawa B9625EX supplies regulated DC power to various system components and modules. This power board assembly converts AC input into stable 5 V and 24 V DC outputs. It distributes power across backplanes and peripheral devices reliably. The unit fits into Yokogawa CENTUM and ProSafe-RS cabinet installations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | B9625EX |
| Product Type | Power Board Assembly |
| Input Voltage | 100–240 VAC |
| Input Frequency | 47–63 Hz |
| Output 1 | 5 VDC / 10 A |
| Output 2 | 24 VDC / 3 A |
| Total Output Power | 120 W maximum |
| Efficiency | 82% typical |
| Ripple | <50 mV peak-to-peak |
| Protection | Overcurrent, overvoltage, thermal |
| Hold-up Time | 20 ms at full load |
| PCB Material | FR-4 glass epoxy |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | –20°C to 70°C |
| Humidity Range | 10% to 90% non-condensing |
Physical Characteristics and Construction
This board measures approximately 200 mm in width and 150 mm in height. The assembly weighs roughly 0.65 kg with all components installed. It uses FR-4 glass epoxy material with double-sided component placement. The PCB includes multiple electrolytic capacitors for energy storage during transients. The board features mounting holes at four corners for secure installation.
Electrical Interface and Component Layout
The B9625EX includes a high-frequency switching transformer for efficient power conversion. Multiple header connectors distribute the DC outputs to system backplanes. The board houses primary and secondary filtering capacitors for low ripple output. It also includes rectifier diodes and switching MOSFETs on the primary side. A dedicated control IC regulates both output voltages precisely.
Performance and Protection Features
The board delivers 120 watts total output with tight voltage regulation of ±2%. It provides overcurrent protection on both output rails to prevent damage. The overvoltage protection circuitry trips during output voltage excursions. Furthermore, the module includes thermal shutdown protection against excessive temperatures. The hold-up time of 20 milliseconds allows graceful power failure handling.
Installation and System Integration
You can install this board into the designated power supply slots within the system cabinet. Connect the AC input wiring to the designated header terminals. Always verify the output voltages using a multimeter before connecting loads. Ensure adequate airflow around the board for proper heat dissipation. For redundant power configurations, install two boards with diode isolation.
Environmental Compliance
This board carries CE marking and UL recognition for industrial use. It complies with RoHS and WEEE environmental directives. The conformal coating protects the PCB against moisture and dust ingress. This coating ensures reliable operation in typical control room environments.
Details
| Weight | 0.25 kg |
|---|---|
| Dimensions | 30 × 120 × 100 mm |
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