B1209S-2WR3

The B_S - 2WR3 series is a compact, high-efficiency, miniature-power, fixed-voltage-input, isolated unregulated, single-output DC/DC module power supply, specifically designed for on-board power systems requiring a voltage rail isolated from the input supply. It is suitable for applications where the input supply voltage is relatively stable (voltage variation range ±10%Vin), isolation between input and output is required (isolation voltage ≤1500VDC), and output voltage regulation is not critical. Typical applications include pure digital circuits, general low-frequency analog circuits, relay driver circuits, data switching circuits, and similar use cases.

Applications

• Stable input power supply (voltage variation range ±10%Vin)
• Input/output isolation required (isolation voltage ≤1500VDC)
• Low output voltage regulation requirements
• Pure digital circuits
• General low-frequency analog circuits
• Relay driver circuits
• Data exchange circuits

Key features

• Isolation voltage: 1500VDC
• Low no-load power consumption: 0.025W (Typ)
• Efficiency: up to 90%
• Operating temperature: -40°C ~ +85°C
• MTBF ≥ 3,500,000 Hrs
• Continuous short-circuit protection with auto-recovery
• Compact SIP package
• Industry-standard pinout
• Ripple/Noise (20MHz bandwidth) < 100mVₚ₋ₚ
• Over-temperature protection and continuous output short-circuit protection, RoHS compliant