MEAN WELL SCWN03W8 series: isolated single-output DC-DC converter - SCWN03W8-03

Description

MEAN WELL SCWN03W8-03 — DC-DC converter

MEAN WELL SCWN03W8-03 is an isolated, regulated single-output DC-DC converter with 3.3 V DC output and a 9–75 V DC input range. It uses a compact DIP24 package for integration into electronic equipment.

Download MEAN WELL SCWN03W8 Datasheet (PDF)

Electrical specifications

Parameter Specification
Model SCWN03W8-03
Output configuration Single regulated DC output.
Output voltage 3.3 V DC
Output current Up to 600 mA. No minimum load is required.
Catalog power rating 3 W series rating. The selected model is limited by its listed output voltage and current; do not increase current to reach the series wattage.
Input voltage 9–75 V DC (8:1 range); nominal systems: 12, 24, 36, 48 or 72 V DC.
Input current No load: 5 mA; full load: 56 mA at the catalog test conditions.
Efficiency (typical) 74% at the specified nominal-input and rated-load conditions.
Capacitive load (maximum) 600 µF.
Voltage accuracy ±2%
Ripple and noise 100 mVp-p. Measured with 20 MHz bandwidth and a 12-inch twisted pair terminated by 0.1 µF and 47 µF capacitors.
Line regulation ±0.5% from low to high input at rated load.
Load regulation ±0.5% (0–100% rated load).
Switching frequency 200 kHz typical
Input filter Pi-type input filter.
Specification conditions Nominal input 48 V DC, rated load, 25°C ambient and 70% RH unless otherwise specified.
Series efficiency reference The catalog family reaches up to 84%; use the model-specific typical efficiency above for this selection.

Protection and control

Parameter Specification
Input fuse An external input fuse is recommended: 1 A fast-acting.
Input surge 100 V DC for 100 ms maximum; not a continuous operating rating.
Short circuit Continuous protection with automatic recovery.
Overload 110–230% of rated output power; hiccup mode with automatic recovery after removal of the fault.
Input undervoltage lockout Start-up: 8.8 V DC; shutdown: 8 V DC (typical).
Overvoltage protection Output clamped by a zener diode.
Remote ON/OFF Remote ON/OFF is available by request. Standard units have no pin at position 1; confirm the requested control option and its operating requirements before ordering.

Mechanical and environmental specifications

Parameter Specification
Dimensions 31.8 × 20.3 × 10.2 mm (L × W × H).
Case and cooling Non-conductive black plastic, UL 94V-0 rated. Free-air convection cooling.
Pin assignment Bottom-view numbering: pins 2 and 3 = −Vin; pins 22 and 23 = +Vin; pins 9 and 11 = N.C.; pin 14 = +Vout; pin 16 = −Vout. Position 1 has no pin on the standard model; it is used only when the remote-control option is selected. N.C. means no connection. Follow the drawing orientation when laying out the PCB.
Mechanical installation DIP24 footprint; 2.54 mm grid, 15.24 mm between pin rows and 3.8 mm lead projection. Pin size: 0.5 ±0.05 mm. Use the model-specific bottom-view and top-view PCB drawings. PCB hole diameter: 0.8 mm.
Working environment −40 to +95°C with load derating; 20–90% RH, non-condensing.
Load derating Natural convection: 100% load through +80°C, then derate to 50% at +95°C.
Storage -40 to +125°C; 10–95% RH, non-condensing.
Temperature coefficient ±0.05%/°C maximum (0–85°C).
Case temperature +115°C maximum.
Soldering At 1.5 mm from the case: 260°C maximum for 1–3 s.
Vibration 10–500 Hz, 2 G, 10 minutes per cycle; 60 minutes along each X, Y and Z axis.
Catalog packing reference per unit 12.5 g, from the catalog PACKING entry; not a measured net weight.
Manufacturer packing 10 pieces per tube; this is the catalog packing arrangement.

Isolation, EMC and manufacturer information

Parameter Specification
Isolation withstand Input-to-output: 3 kV DC.
Isolation resistance Input-to-output: 1000 MΩ at 500 V DC, 25°C and 70% RH.
Isolation capacitance 1000 pF typical.
EMC emissions BS EN/EN 55032: conducted Class A without additional components and Class B with additional components; radiated Class B without additional components.
EMC immunity BS EN/EN 61000-4-2: Level 2, ±8 kV air / ±4 kV contact; -4-3: Level 2, 3 V/m; -4-4: Level 2, 0.5 kV; -4-5: Level 2, 1 kV line-to-line; -4-6: Level 2, 3 V (e.m.f.).
Approval EAC TP TC 020/2011 approved.
System EMC Reconfirm EMC compliance in the final equipment. The component specification does not replace the complete system assessment.
EMC application circuit For the conducted Class B configuration, follow the catalog circuit with C1 = 2.2 µF / 100 V and L1 = 12 µH. Radiated Class B is specified without additional components; verify the completed equipment.
MTBF 2500 k hours typical per MIL-HDBK-217F at 25°C; not a service-life or warranty guarantee.
Manufacturer warranty reference The catalog states a 3-year manufacturer warranty; the manufacturer’s applicable terms govern.

MEAN WELL SCWN03W8 series: isolated single-output DC-DC converter - SCWN03W8-03

Product form

MEAN WELL SCWN03W8-03 — DC-DC converter MEAN WELL SCWN03W8-03 is an isolated, regulated single-output DC-DC converter with 3.3 V DC... Read more

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    Description

    MEAN WELL SCWN03W8-03 — DC-DC converter

    MEAN WELL SCWN03W8-03 is an isolated, regulated single-output DC-DC converter with 3.3 V DC output and a 9–75 V DC input range. It uses a compact DIP24 package for integration into electronic equipment.

    Download MEAN WELL SCWN03W8 Datasheet (PDF)

    Electrical specifications

    Parameter Specification
    Model SCWN03W8-03
    Output configuration Single regulated DC output.
    Output voltage 3.3 V DC
    Output current Up to 600 mA. No minimum load is required.
    Catalog power rating 3 W series rating. The selected model is limited by its listed output voltage and current; do not increase current to reach the series wattage.
    Input voltage 9–75 V DC (8:1 range); nominal systems: 12, 24, 36, 48 or 72 V DC.
    Input current No load: 5 mA; full load: 56 mA at the catalog test conditions.
    Efficiency (typical) 74% at the specified nominal-input and rated-load conditions.
    Capacitive load (maximum) 600 µF.
    Voltage accuracy ±2%
    Ripple and noise 100 mVp-p. Measured with 20 MHz bandwidth and a 12-inch twisted pair terminated by 0.1 µF and 47 µF capacitors.
    Line regulation ±0.5% from low to high input at rated load.
    Load regulation ±0.5% (0–100% rated load).
    Switching frequency 200 kHz typical
    Input filter Pi-type input filter.
    Specification conditions Nominal input 48 V DC, rated load, 25°C ambient and 70% RH unless otherwise specified.
    Series efficiency reference The catalog family reaches up to 84%; use the model-specific typical efficiency above for this selection.

    Protection and control

    Parameter Specification
    Input fuse An external input fuse is recommended: 1 A fast-acting.
    Input surge 100 V DC for 100 ms maximum; not a continuous operating rating.
    Short circuit Continuous protection with automatic recovery.
    Overload 110–230% of rated output power; hiccup mode with automatic recovery after removal of the fault.
    Input undervoltage lockout Start-up: 8.8 V DC; shutdown: 8 V DC (typical).
    Overvoltage protection Output clamped by a zener diode.
    Remote ON/OFF Remote ON/OFF is available by request. Standard units have no pin at position 1; confirm the requested control option and its operating requirements before ordering.

    Mechanical and environmental specifications

    Parameter Specification
    Dimensions 31.8 × 20.3 × 10.2 mm (L × W × H).
    Case and cooling Non-conductive black plastic, UL 94V-0 rated. Free-air convection cooling.
    Pin assignment Bottom-view numbering: pins 2 and 3 = −Vin; pins 22 and 23 = +Vin; pins 9 and 11 = N.C.; pin 14 = +Vout; pin 16 = −Vout. Position 1 has no pin on the standard model; it is used only when the remote-control option is selected. N.C. means no connection. Follow the drawing orientation when laying out the PCB.
    Mechanical installation DIP24 footprint; 2.54 mm grid, 15.24 mm between pin rows and 3.8 mm lead projection. Pin size: 0.5 ±0.05 mm. Use the model-specific bottom-view and top-view PCB drawings. PCB hole diameter: 0.8 mm.
    Working environment −40 to +95°C with load derating; 20–90% RH, non-condensing.
    Load derating Natural convection: 100% load through +80°C, then derate to 50% at +95°C.
    Storage -40 to +125°C; 10–95% RH, non-condensing.
    Temperature coefficient ±0.05%/°C maximum (0–85°C).
    Case temperature +115°C maximum.
    Soldering At 1.5 mm from the case: 260°C maximum for 1–3 s.
    Vibration 10–500 Hz, 2 G, 10 minutes per cycle; 60 minutes along each X, Y and Z axis.
    Catalog packing reference per unit 12.5 g, from the catalog PACKING entry; not a measured net weight.
    Manufacturer packing 10 pieces per tube; this is the catalog packing arrangement.

    Isolation, EMC and manufacturer information

    Parameter Specification
    Isolation withstand Input-to-output: 3 kV DC.
    Isolation resistance Input-to-output: 1000 MΩ at 500 V DC, 25°C and 70% RH.
    Isolation capacitance 1000 pF typical.
    EMC emissions BS EN/EN 55032: conducted Class A without additional components and Class B with additional components; radiated Class B without additional components.
    EMC immunity BS EN/EN 61000-4-2: Level 2, ±8 kV air / ±4 kV contact; -4-3: Level 2, 3 V/m; -4-4: Level 2, 0.5 kV; -4-5: Level 2, 1 kV line-to-line; -4-6: Level 2, 3 V (e.m.f.).
    Approval EAC TP TC 020/2011 approved.
    System EMC Reconfirm EMC compliance in the final equipment. The component specification does not replace the complete system assessment.
    EMC application circuit For the conducted Class B configuration, follow the catalog circuit with C1 = 2.2 µF / 100 V and L1 = 12 µH. Radiated Class B is specified without additional components; verify the completed equipment.
    MTBF 2500 k hours typical per MIL-HDBK-217F at 25°C; not a service-life or warranty guarantee.
    Manufacturer warranty reference The catalog states a 3-year manufacturer warranty; the manufacturer’s applicable terms govern.

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