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B0505S DC-DC Isolated Power Module — 5V to 5V, 1W, SIP-4, 1000V Isolation

B0505S DC-DC Isolated Power Module 5V to 5V, 1W, SIP-4, 1000V Isolation

$4.36 USD

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B0505S DC-DC Isolated Power Module — 5V to 5V, 1W, SIP-4, 1000V Isolation

The B0505S is a compact 1W DC-DC isolated power module in SIP-4 package that converts 5V input to an isolated 5V output with 1000V DC isolation between input and output. This galvanic isolation eliminates ground loops, prevents noise coupling, and protects sensitive circuits from high-voltage transients — making it the standard isolated power supply for RS-485 transceivers, CAN bus interfaces, analog sensor isolation, and industrial signal conditioning circuits.

Key Specifications

Parameter	Value
Model	B0505S
Package	SIP-4 (through-hole)
Input Voltage	5V DC (±10%)
Output Voltage	5V DC (isolated)
Output Power	1W (200mA max)
Isolation Voltage	1000V DC (input to output)
Efficiency	~75%
Operating Temperature	-40°C to +85°C
No-Load Current	<30mA

Why Use an Isolated DC-DC Converter?

✅ 1000V galvanic isolation — breaks ground loops between MCU and field devices
✅ Eliminates noise coupling — prevents switching noise from RS-485/CAN from entering MCU power rail
✅ Protects against transients — shields MCU from industrial voltage spikes on bus lines
✅ SIP-4 through-hole — easy to solder on PCB or use in breadboard with adapter
✅ 1W / 200mA output — sufficient to power RS-485 transceiver (SP485, MAX485) and optocouplers