Model Information for SKMW20F-03

Model Name: SKMW20F-03
Series: SKMW20
Rated Power: 20W
Package Size: 1"x1" DIP

Input Voltage Range: 9~36Vdc
Output Voltage: 3.3Vdc
Output Current: 0~4500mA
Efficiency: 87%
Capacitor Load: 5000uF

Features:

• 4:1 ultra-wide input range
• Operating temperature range: -40°C to +85°C
• High efficiency up to 89%
• Complies with EN55032 radiated Class A without additional components
• Continuous short circuit, overload, overvoltage, and input undervoltage protection
• Remote ON/OFF control and trimmable output voltage (±10%)
• 1.5KV DC I/O isolation
• 3-year warranty
• Applications:
• Telecom/datacom systems
• Wireless networks
• Industrial control facilities
• Instruments
• Analyzers
• Detectors
• Data switches
• Mechanical Specifications:
• Dimensions: 25.4mm x 25.4mm x 10.2mm (1"x1"x0.4")
• Pin size: 1 ± 0.1mm (0.04" ± 0.004")
• Plug assignment: Refer to the datasheet for pin-out details
• Electrical Specifications:
• Voltage accuracy: ±1.5%
• Ripple & noise: 75mVp-p (measured at 20MHz using a 12" twisted pair terminated with a 0.1uF & 47uF capacitor)
• Line regulation: ±0.2%
• Load regulation: ±0.2% (single output models)
• Switching frequency: 270KHz
• External trim adjustment range: ±10% (single output model only)
• Short circuit protection: Continuous, automatic recovery
• Overload protection: Recovers automatically after fault condition is removed
• Overvoltage protection: Clamp by diode
• Undervoltage lockout: Shutdown voltage 8Vdc
• Environmental Specifications:
• Working temperature: -40°C to +85°C (refer to derating curve)
• Case temperature: +105°C max
• Working humidity: 20% to 90% RH non-condensing
• Storage temperature: -55°C to +125°C
• Storage humidity: 10% to 95% RH non-condensing
• Soldering temperature: 1.5mm from case, 260°C max for 1~3 seconds
• Vibration: 10 to 500Hz, 2G for 10 minutes, 1 cycle, period for 60 minutes each along X, Y, Z axes
• Safety & EMC Specifications:
• Conducted emissions: EN55032 (CISPR32)
• Radiated emissions: EN55032 (CISPR32) Class A
• ESD: EN61000-4-2, Level 2 (±8KV air, ±4KV contact)
• Radiated susceptibility: EN61000-4-3, Level 2 (3V/m)
• EFT/Burst: EN61000-4-4, Level 1 (0.5KV)
• Surge: EN61000-4-5, Level 1 (0.5KV line-line)
• Conducted immunity: EN61000-4-6, Level 2 (3V e.m.f.)
• Magnetic field: EN61000-4-8, Level 2 (3A/m)
• Isolation withstand voltage: 1.5KV DC
• Isolation resistance: 100M Ohms / 500VDC / 25°C / 70% RH
• Isolation capacitance: 1500pF (typical)
• MTBF: 910,000 hours (MIL-HDBK-217F at 25°C)
• Packaging:
• Case material: Black coated copper with non-conductive base
• Weight: 8g