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Japan COSEL Koso SUCS31205 Series 3W Single Output 5V 0.6A Isolated DC-DC Power Module (9-18V Input/SIP Package)
| Series | SUCS3 (3W) |
| Topology Structure | Isolation Flyback/Forward |
| Voltage Range | DC 9V - 18V (nominal 12V) |
| Voltage Output | ±5% (TRM Pin Floating), adjustable ±5% externally with a resistor |
| Output Current 1 | 0.6A (600mA) |
| Rated Power | 3W |
| Isolation Pressure Input Fg | 500 Vdc (Input-Output, 1 minute) |
| Resistance | 100MΩ min (500Vdc) |
| Frequency Range | Typical 400kHz (internal fixed) |
| Conversion Efficiency | Typical 77% (full load, 12Vin, 5Vout) |
| Operating Temperature | -40°C to +85°C (Derating required, refer to Derating Curve) |
| Storage Temperature Range | -40°C ~ +100°C |
| Encapsulation Type | SIP Single Inline Package (C suffix) / SMD Surface Mount Device (B/BP suffix) |
| Dimensions | 25.0mm x 15.5mm x 7.0mm (0.98" x 0.61" x 0.28" - B version) |
| Spacing | 2.54mm (0.1 inch) |
| Installation | PCB Board-mounted Soldering (Through Hole / Surface Mount) |
| Security Feature | Output short-circuit protection (self-recovery), input under-voltage lockout (UVLO) |
| Certification | UL/cUL 60950-1, CE Marking (LVD), RoHS Directive (2011/65/EU, (EU)2015/863) |
| Mean Time Between Failures | > 1,000,000 Hours (MIL-HDBK-217F, 25°C, Ground Benign) |
| Replacement Model | MGS Koso MGS31205 Series (Launched in 2016, Higher Efficiency/Power Density) |
Manufacturer No.
SUCS31205SUCS31205BSUCS31205CSUCS31205BPSUCS31205B-GMGS31205
OEM Part No.
SUCS31205SUCS31205BSUCS31205CSUCS31205BPSUCS31205B-G
Interchange No.
MGS31205
Fitment Vehicles
Industrial Automation Control SystemRenewable Energy InverterTransportation Electronic EquipmentHome Appliance Power BoardITE Commercial Information Technology EquipmentMotor Drive Control BoardUPS Uninterruptible Power Supply ModuleAutomotive Electronic Power Management
Electrical And Electronic Systems - Industrial Encyclopedia
Original genuine Japan COSEL Koso SUCS31205 series isolated voltage DC-DC converter, power 3W, single 5V/0.6A output, wide voltage 9-18V input, isolation voltage 500Vdc. SMD chip (B/BP) and DIP packaging provided, operating temperature -40℃~85℃, compliant with RoHS. Widely used in industrial automation, communication equipment, instruments and meters, rail transit and new energy inverter applications, complete data manual and 3D model download available.