B0505S-1WR3 is an isolated DC/DC power module with 1W rated power launched by MORNSUN Technology (Guangzhou). Specifically designed for distributed power systems, it provides a stable output electrically isolated from the input power supply. Below is the detailed English translation:

Core Functions and Features

Input and Output Characteristics

Input voltage: Fixed 5V DC (range 4.5V~5.5V), compatible with standard 5V power supply systems.

Output voltage: 5V DC (unregulated) with a maximum output current of 200mA (1W rated power). It supports sustained short-circuit protection and self-recovery functionality.

Efficiency: Up to 85% under full-load conditions, with a no-load input current as low as 5mA, making it suitable for low-power applications.

Isolation and Safety Performance

Isolation voltage: 1500VDC (for 1 minute) or 3000VDC (for 1 second), meeting industrial safety standards. It effectively prevents ground loop interference and electrical shocks.

Insulation resistance: ≥1000MΩ between input and output (tested at 500VDC), ensuring high-reliability isolation.

Wide Temperature Range and Durability

Operating temperature: -40℃ to +105℃, supporting long-term stable operation in industrial environments. Derating is required at high temperatures (e.g., output power derated to 80% at 85℃).

Mechanical reliability: Encased in black plastic complying with UL94V-0 flame-retardant standard. It resists vibration (10-150Hz, 5G) and shock, with a MTBF (Mean Time Between Failures) of 3.5 million hours (per MIL-HDBK-217F standard).

Low Power Consumption and EMC Compliance

Standby power consumption: Extremely low current in deep sleep mode, suitable for battery-powered devices or equipment requiring long-term standby.

EMC performance: Complies with CE CISPR32/EN55032 Class B standards. Electromagnetic interference is optimized through EMI suppression circuits (such as LDM inductors and CY capacitors), and recommended filtering schemes can further reduce ripple.

Technical Specifications

Package type: 8-pin SIP-12 (Single In-Line Package) with dimensions 11.6mm × 6.0mm × 10.16mm and a pin pitch of 2.54mm, compatible with standard PCB layouts.

Pin definitions:

GND (Input Ground)

Vin (5V Input)

OV (Output Ground)

+Vo (5V Output)

Typical ripple: ≤50mVp-p (it is recommended to connect a 10μF capacitor at the output for filtering). Excessively large capacitive loads (e.g., >10μF) should be avoided to prevent startup abnormalities.

Application Scenarios

Industrial Control: PLCs, sensors, and fieldbus nodes, providing isolated power to enhance system stability.

Communication Equipment: Auxiliary power supply for data switches and routers, isolating noise interference.

Automotive Electronics: Body control modules and on-board sensors, adapting to wide-temperature environments.

Medical Equipment: Meeting electrical safety requirements to protect patients and equipment.

Consumer Electronics: TWS earbuds and smart wearables, leveraging low-power characteristics to extend battery life.