MEAN WELL RSP-100-3.3 is a single-output enclosed AC/DC power supply rated at 3.3 V DC, 20 A and 66 W. It uses active PFC and free-air convection in a 30 mm-high enclosure; available load depends on input voltage and ambient temperature.
Product Datasheet
Download MEAN WELL RSP-100 Datasheet (PDF)
The RSP-100 section is on PDF pages 4, 5, 6. Refer to the complete mechanical drawings and notes when planning installation.
Model Code and Configuration
Complete model
RSP-100-3.3
RSP
Single-output enclosed AC/DC power supply series with active PFC
100
Series output-power designation; this model is rated at 66 W
3.3
Nominal DC output voltage: 3.3 V
Cooling
Free-air convection
Enclosure profile
30 mm height
The printed model encoding defines series, power designation and output voltage. It does not define a separate remote-control option suffix for this model. Remote-control connector information is listed separately below.
Output Specifications
Nominal DC output voltage
3.3 V
Rated output current
20 A
Output current range
0 to 20 A
Rated output power
66 W
Maximum ripple and noise
100 mVp-p
Output voltage adjustment
3.14 to 3.63 V
Voltage tolerance
±2.0%
Line regulation
±0.5%
Load regulation
±1.0%
Typical efficiency
83%
Unless otherwise specified, parameters are measured at 230 VAC input, rated load and 25°C ambient.
Ripple and noise: 20 MHz bandwidth; 12-inch twisted pair terminated with parallel 0.1 µF and 47 µF capacitors.
Voltage tolerance includes setup tolerance, line regulation and load regulation.
Use the voltage-adjustment control shown in the mechanical drawing within the stated range. Adjustment does not authorize exceeding the listed current or power ratings.
For this output-voltage version, the datasheet strongly recommends that external output capacitance should not exceed 5,000 µF.
Input and Timing
AC input range
85 to 264 VAC, universal full range
DC input range
120 to 370 VDC
Input frequency
47 to 63 Hz
Typical power factor at full load
>0.93 at 230 VAC; >0.98 at 115 VAC
Typical AC input current
1.1 A at 115 VAC; 0.55 A at 230 VAC
Typical cold-start inrush
30 A at 230 VAC
Leakage current
<2 mA at 240 VAC
Setup / rise time
600 / 30 ms at full load
Typical hold-up time
16 ms at full load
PFC / PWM switching frequency
100 / 100 kHz
The input-voltage derating graph is specified at 60 Hz: 80% load at 85 VAC, rising to 100% at 100 VAC and remaining at 100% through 264 VAC. Apply this limit together with temperature derating; the full input range is not a full-power rating at every voltage.
Protection
Listed protection functions
Short circuit, overload, overvoltage and overtemperature
Overload threshold
105% to 135% of rated output power
Overload response
Constant-current limiting; automatic recovery after the fault condition is removed.
Overvoltage threshold
3.63 to 4.46 V
Overvoltage recovery
Output shutdown; reapply input power to recover.
Overtemperature recovery
Output shutdown; automatic recovery after temperature decreases.
The overload threshold is a protection characteristic, not a continuous overload or short-duration peak-power operating rating.
Operating Conditions and Derating
Working ambient temperature
-30 to 70 °C; apply model-specific derating
Cooling
Free-air convection; horizontal mounting in the derating graph
Full-load temperature plateau
Through 45°C under the applicable input conditions
High-temperature derating endpoint
60% load at 65°C for this output-voltage group
Working humidity
20% to 90% RH, non-condensing
Storage temperature / humidity
-40 to +85°C; 10% to 95% RH, non-condensing
Temperature coefficient
±0.05%/°C over 0 to 50°C
Vibration
10 to 500 Hz; 2 G; 10 min/cycle; 60 min each along X, Y and Z axes.
Overvoltage category III
Up to 2,000 m under EN61558, EN50178, EN60664-1 and EN62477-1
Follow the complete temperature curve between the stated plateau and endpoint. The working-temperature range does not mean full load at every temperature; do not extend the voltage-group curve beyond its plotted endpoint.
Above 2,000 m, reduce ambient-temperature limits by 3.5°C per additional 1,000 m for these fanless models.
These pages specify overvoltage category III up to 2,000 m but do not state a separate maximum operating altitude. Do not extend the category III claim above 2,000 m.
Dimensions, Mounting and Terminal Wiring
Housing dimensions, L × W × H
179 × 99 × 30 mm
Mechanical case
227A
Drawing tolerance
±1 mm
Base mounting callout
2-M4 L=4 mm
Side mounting callout
4-M4 (both sides) L=4 mm
Width including projecting mounting tabs in the top view
119 mm; distinct from the 99 mm housing width
Terminal 1
AC/L
Terminal 2
AC/N
Terminal 3
FG (protective earth)
Terminal 4
DC OUTPUT -V
Terminal 5
DC OUTPUT -V
Terminal 6
DC OUTPUT +V
Terminal 7
DC OUTPUT +V
Use the complete mechanical drawing for hole positions and clearances. Mounting callouts are not quantities of included screws. L=4 mm is the printed thread-depth callout; these pages do not specify tightening torque or wire gauge.
FG is protective earth. Observe the separately assigned AC input and DC output terminals; repeated -V or +V terminals belong to the same single output.
Remote Control and Optional Connector Information
Remote-control function
The datasheet feature list states built-in remote ON-OFF control
CN1 power ON level
0 to 0.8 VDC
CN1 power OFF level
4 to 10 VDC
CN1 pin 1
RC+
CN1 pin 2
RC-
CN1 header designation as printed
JST S2B-XH or equivalent
Mating housing designation as printed
JST XHP or equivalent
Contact-terminal designation as printed
JST SXH-001T-P0.6 or equivalent
The mechanical drawing marks the remote-control connector as optional. Confirm the actual connector provision before wiring; do not assume that a mating housing, crimp terminals or a cable assembly is included.
The connector names above are transcribed as printed. These pages do not provide any additional pole-count suffix, exact supplied quantity, open-circuit default, permitted control current or maximum cable length. Do not complete abbreviated part numbers by borrowing codes from another series.
No separate dedicated bracket, terminal-cover or cable-kit order code is specified in these pages. Use only separately verified compatible accessories; the mounting drawing alone does not establish their supply or compatibility.
Safety, EMC and Reliability
Safety approvals listed for this model
UL62368-1; TUV BS EN/EN62368-1; BS EN/EN61558-1; BS EN/EN61558-2-16; EAC TP TC 004; CCC GB4943.1; BSMI CNS15598-1; BIS IS13252 (Part 1):2010 / IEC60950-1:2005
Withstand voltage
I/P-O/P: 4 kVAC; I/P-FG: 2 kVAC; O/P-FG: 0.5 kVAC
Insulation resistance
100 MΩ at 500 VDC / 25°C / 70% RH for I/P-O/P, I/P-FG and O/P-FG.
EMC emission, datasheet statement
BS EN/EN55032 (CISPR32) Class B; BS EN/EN61000-3-2 and -3; EAC TP TC 020; CNS15936 Class B; GB9254 Class B; GB17625.1.
EMC immunity, datasheet statement
BS EN/EN61000-4-2, -3, -4, -5, -6, -8 and -11; BS EN/EN55035, light-industry level; EAC TP TC 020.
Minimum MTBF, Telcordia SR-332 (Bellcore)
2325.2 thousand hours
Minimum MTBF, MIL-HDBK-217F at 25°C
288.5 thousand hours
AS/NZS 62368.1 statement
Design reference; not listed as an approval in this specification row
The power supply is a component for installation in final equipment. EMC compliance must be reconfirmed on the completed equipment.
The listed approvals and standards apply to this model and datasheet revision. They do not establish compliance of an entire installation. MTBF figures are reliability-model results, not guaranteed service life or warranty duration.
Catalog Weight and Product Features
Per-unit catalog PACKING reference
520 g (0.52 kg)
Carton packing reference
24 units / 14.5 kg / 0.81 CUFT
Power indicator
LED power-on indicator
Application examples
Factory automation, test and measurement, laser-related machines, burn-in facilities and RF equipment
The per-unit figure is the catalog PACKING reference, not a measured net mass or a customer parcel weight. Carton totals must not be used as the single-product weight.
The manufacturer datasheet lists a 3-year warranty; coverage is governed by the applicable manufacturer warranty terms.
Datasheet Scope
Series section
Combined RSP catalog, PDF pages 4, 5, 6
Model specification page
5
Mechanical and curve page
6
Specification revision
2025-01-10
Refer to the linked manufacturer PDF for the complete mechanical drawing, connector information and derating curves before installation.
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