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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)
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| Series | SUCS3 (3W) |
| Topology Structure | Isolation Flyback/Forward |
| Input Voltage Range | DC 9V - 18V (nominal 12V) |
| Output Voltage | 5V DC (single channel) |
| Output Current | 0.6A (600mA) |
| Rated Output Power | 3W |
| Output Voltage Accuracy | ±5% (TRM Pin Floating), adjustable ±5% externally with a resistor |
| Isolation Pressure | 500 Vdc (Input-Output, 1 minute) |
| Isolation Resistance | 100MΩ min (500Vdc) |
| Switch Frequency | 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 Form | 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) |
| Pin Spacing | 2.54mm (0.1 inch) |
| Installation | PCB Board-mounted Soldering (Through Hole / Surface Mount) |
| Protection 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 Upgrade 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
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Electrical and Electronic System - 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.