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Mean Well RSP-100-3.3 Power Supply 66W 3.3V 20A

Name: Mean Well RSP-100-3.3 Power Supply 66W 3.3V 20A
Brand: Mean Well
SKU: RSP-100-3.3
Price: 44.76 USD
Availability: InStock

1U low profile with active PFChigh efficiency

SKU RSP-100-3.3

$44.76 USD

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Select model — 6 in this family

RSP-100-3.3

RSP-75-3.3 75W 3.3V Low stock$40.88 USD

RSP-100-3.3 100W 3.3V Low stock$44.76 USD

RSP-150-3.3 150W 3.3V In stock$43.03 USD

RSP-200-3.3 200W 3.3V Low stock$54.37 USD

RSP-320-3.3 320W 3.3V Low stock$58.02 USD

RSP-500-3.3 500W 3.3V Low stock$114.84 USD

Product variants

In stock

Overview

RSP-100-3.3 is the 3.3V output model of this series: rated current 20A, rated power 66W, typical efficiency 83%.

RSP-100 is a 100W single output enclosed type AC/DC power supply. This series operates for 85~264VAC input voltage and offers the models with the DC output mostly demanded from the industry. Each model is cooled by free air convection , working for the temperature up to 70℃.

Features

Universal AC input / Full range
Built-in active PFC function
High efficiency up to 88%
Cooling by free air convection
Built-in remote ON-OFF control
Protections: Short circuit / Overload / Over voltage / Over temperature
LED indicator for power on
3 years warranty

Specifications

RSP-100-3.3Specifications from the official datasheet (2025-01-10 edition)

OUTPUT

DC VOLTAGE: 3.3V
RATED CURRENT: 20A
CURRENT RANGE: 0 ~ 20A
RATED POWER: 66W
RIPPLE & NOISE (max.)^Note.2: 100mVp-p
VOLTAGE ADJ. RANGE: 3.14 ~ 3.63V
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 600ms, 30ms at full load
HOLD UP TIME (Typ.): 16ms at full load

INPUT

VOLTAGE RANGE: 85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR (Typ.): PF>0.93/230VAC PF>0.98/115VAC at full load
EFFICIENCY (Typ.): 83%
AC CURRENT (Typ.): 1.1A/115VAC 0.55A/230VAC
INRUSH CURRENT (Typ.): COLD START 30A/230VAC
LEAKAGE CURRENT: <2mA / 240VAC

PROTECTION

OVERLOAD: 105 ~ 135% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE: 3.63 ~ 4.46V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: Shut down o/p voltage, recovers automatically after temperature goes down

FUNCTION

REMOTE CONTROL: CN1: < 0~0.8VDC POWER ON , 4~10VDC POWER OFF

ENVIRONMENT

WORKING TEMP.: -30 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.05%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
OVER VOLTAGE CATEGORY: Ⅲ; According to E N 61558, EN50178,EN60664-1, EN62477-1 ; altitude up to 2000 meters

SAFETY & EMC

SAFETY STANDARDS: 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(Part1): 2010/IEC 60950-1:2005(except for 48V) approved, Design refer to AS/NZS 62368.1
WITHSTAND VOLTAGE: I/P-O/P:4KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE: I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020, CNS15936, GB9254 Class B, GB17625.1
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, light industry level, EAC TP TC 020

OTHERS

MTBF: 2325.2K hrs min. Telcordia SR-332 (Bellcore) ; 288.5K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 179*99*30mm (L*W*H)
PACKING: 0.52Kg; 24pcs/14.5Kg/0.81CUFT

Test conditions and notes6

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
5. Strongly recommended that external output capacitance should not exceed 5000uF.(Only for: RSP-100-3.3/-5/-7.5)
6. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

RSP-100-3.3 Mechanical Specification — Mechanical Specification

RSP-100-3.3 Block Diagram — Block Diagram

RSP-100-3.3 Derating Curve — Derating Curve

Typical applications

Factory control or automation apparatus
Test and measurement instrument
Laser related machine
Burn-in facility
RF application

Downloads

Certificates4

CB Certificate (RSP-100)(EN) PDF Download

TUV Certificate (RSP-100)(EN)) PDF Download

EMC Certificate (RSP-100)(EN) PDF Download

CCC Certificate (RSP-100)(CN) PDF Download

Test reports1

Test Report (RSP-100-3.3)(EN) PDF Download

Catalogues2

Mean Well Catalog (Industrial) PDF Download

Mean Well Sign Panel Catalog PDF Download

FAQ

What industrial or embedded applications can the RSP-100-3.3 serve?

The RSP-100-3.3 provides 3.3V at 20A (66W) which is typical for FPGA boards, microcontroller development platforms, and embedded logic circuitry that operates on a 3.3V rail. The 85–264VAC input allows operation on any standard AC supply without modification.

Why is the RSP-100-3.3 rated at 66W rather than ~100W like other RSP-100 variants?

The RSP-100-3.3 is rated for 20A at 3.3V, the same current rating as the RSP-100-5, which results in 66W (3.3V × 20A). The 12V, 24V, and 48V variants are rated 102W, 100.8W and 100.8W because their higher voltages deliver that power at lower current (8.5A, 4.2A and 2.1A).

Does the RSP-100-3.3 support operation in environments down to -30°C?

Yes. The RSP-100-3.3 is rated for -30°C to +70°C ambient, with output derating at higher temperatures according to the derating curve. No IP rating is stated, so it should be enclosed to prevent moisture and dust exposure; humidity must stay within 20–90% RH non-condensing.

What certifications does the RSP-100-3.3 hold?

The RSP-100-3.3 is approved to UL62368-1, TÜV BS EN/EN62368-1, BS EN/EN61558-1 and -2-16, CCC GB4943.1, BSMI CNS15598-1, EAC TP TC 004 and BIS IS13252, covering the US, Europe, China, Taiwan, India and the Eurasian Economic Union.

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