3
RAC02E-K/277
AC/DC Converter
www.recom-power.com REV.: 0/2021 PA-1
Features
Regulated
Converter
• 85 to 305VAC input voltage range
• 4kVAC isolation strength
• Operating temperature: -40°C to +90°C
• Full load output power up to 80°C
• Low profile of 15.4mm
• Standby mode optimized for Ecodesigns
• EMC compliance EN55032 class “B”
Description
The cost-efficient RAC02E-K/277 AC/DC converter series has an input range of nominal 100VAC to an
enhanced 277VAC, delivering an uncompromising 2 watts of output power with tightly regulated outputs
from 3.3V to 24VDC. These low profile, encapsulated print-mountable modules in an industry-standard
pinout deliver full output power from -40°C to +80°C and are certified for operation up to +90°C air
ambient with output power reduced to 1.2W. This series of AC/DC modules holds international safety
certifications for industrial, domestic, ITE, use with 4kVAC input to output isolation, they are suitable for
worldwide applications in automation control, industry 4.0, IoT. Due to their LPS (Limited Power Source)
and reinforced class II installation rating for floating outputs and their significantly wide margin to class
B EMC compliance without external components, these are the easiest to use, versatile power modules
in the industry.
2 Watt
1.35” x 0.88”
Single Output
Notes:
Note1: Efficiency is tested at nominal input and full load at +25°C ambient
Model Numbering
Single
nom. Output Power
nom. Output Voltage
RAC02E- SK/277
Selection Guide
Part
Number
Input
Voltage Range
[VAC]
nom. Output
Voltage
[VDC]
Output
Current
[mA]
Efficiency
typ. (1)
[%]
RAC02E-3.3SK/277 85-305 3.3 600 68
RAC02E-05SK/277 85-305 5 400 72
RAC02E-12SK/277 85-305 12 167 73
RAC02E-15SK/277 85-305 15 133 75
RAC02E-24SK/277 85-305 24 83 78
ERP
compliant
R
E
C
O
M
C
O
N
V
E
R
T
E
R
S
C
O
M
P
L
I
A
N
T
P
R
O
D
U
C
T
S
REACH
compliant
R
E
C
O
M
C
O
N
V
E
R
T
E
R
S
C
O
M
P
L
I
A
N
T
P
R
O
D
U
C
T
S
RoHS
2
+
compliant
10 from 10
E227436
UL/IEC/EN62368-1 certified
CAN/CSA C22.2 No. 62368-1 certified
EN62233 (pending)
IEC/EN61558-1/2-16 (pending)
EN55032/EN55035 compliant
CB Report
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Nominal Input Voltage 50/60Hz 100VAC 277VAC
Operating Range (2, 3) 47-63Hz
DC
85VAC
120VDC
277VAC 305VAC
430VDC
Input Current
115VAC
230VAC
277VAC
60mA
40mA
30mA
Inrush Current cold start
at 25°C
115VAC
230VAC
277VAC
10A
20A
25A
No load Power Consumption 75mW
ErP Standby Mode Conformity
(Maximum output power available for
stated maximum input power)
Input Power= 0.5W
1.0W
0.32W
0.67W
continued on next page
Notes:
Note2: The products were submitted for safety files at AC-Input operation. (90-305VAC)
Note3: Refer to “Derating Graph (7)”
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
www.recom-power.com REV.: 0/2021 PA-2
AC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
RAC02E-K/277
Series
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Input Frequency Range AC Input 47Hz 63Hz
Minimum Load 0%
Power Factor
115VAC
230VAC
277VAC
0.55
0.45
0.4
Start-up Time 15ms
Rise Time 10ms
Hold-up Time
115VAC
230VAC
277VAC
15ms
80ms
120ms
Internal Operating Frequency 100% load at nominal Vin 132kHz
Output Ripple and Noise (4) 20MHz BW 3.3, 5Vout
others
120mVp-p
1% of Vout
continued on next page
Efficiency vs. Load
RAC02E-12SK/277 / RAC02E-24SK/277
RAC02E-3.3SK/277
RAC02E-15SK/277
RAC02E-05SK/277
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
110VAC
230VAC
277VAC
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
110VAC
230VAC
277VAC
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
110VAC
230VAC
277VAC
0 10 20 30 40 50 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Efficiency [%]
Output Load [%]
110VAC
230VAC
277VAC
Notes:
Note4: Measurements are made with a 0.1µF MLCC & 10µF E-cap in parallel across output. (low ESR)
www.recom-power.com REV.: 0/2021 PA-3
AC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
RAC02E-K/277
Series
REGULATIONS
Parameter Condition Value
Output Accuracy 3.3, 5Vout
others
±2.0% typ.
±1.0% typ.
Line Regulation low line to high line, full load
±0.5% typ.
Load Regulation (5) 10% to 100% load 0.5% typ.
Transient Response 10% load step change
recovery time
6.0% max.
350µs max.
Notes:
Note5: Operation below 10% load will not harm the converter, but specifications may not be met
Deviation vs. Load RAC02E-3.3SK/277 RAC02E-05SK/277
1.0
0.5
0
-0.5
0.75
0.25
-0.25
-0.75
-1.0
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
1.0
0.5
-0.5
0.75
0.25
0
-0.25
-0.75
-1.0
RAC02E-12SK/277 / RAC02E-24SK/277 RAC02E-15SK/277
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
1.0
0.5
-0.5
0.75
0.25
0
-0.25
-0.75
-1.0
Deviation [%]
0 10 20 30 40 50 60 70 80 90 100
Output Load [%]
1.0
0.5
-0.5
0.75
0.25
0
-0.25
-0.75
-1.0
PROTECTIONS
Parameter Type Value
Input Fuse internal fusible resistor
Short Circuit Protection (SCP)
Hiccup mode, auto recovery
Over Voltage Protection (OVP) 120% - 260%, hiccup mode
Over Current Protection (OCP) 120% - 300%, hiccup mode
Over Voltage Category (OVC) OVCII
Isolation Voltage (6) I/P to O/P 1 minute 4kVAC
continued on next page
Notes:
Note6: For repeat Hi-Pot testing, reduce the time and/or the test voltage
www.recom-power.com REV.: 0/2021 PA-4
AC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
RAC02E-K/277
Series
PROTECTIONS
Parameter Condition Value
Isolation Resistance I/P to O/P, Isolation Voltage 500VDC 1GΩ min.
Isolation Capacitance I/P to O/P, 100KHz/0.1V 100pF max.
Leakage Current @ 277VAC 0.25mA max.
Insulation Grade reinforced
ENVIRONMENTAL
Parameter Condition
Value
Operating Temperature Range @ natural convection 0.1m/s refer to “Derating Graph (7)”-40°C to +85/90°C
Maximum Case Temperature +95°C
Temperature Coefficient ±0.03%/K
Operating Altitude 2000m
Operating Humidity non-condensing 20% - 90% RH max.
Pollution Degree PD2
Vibration 10-500Hz, 2G 10min./1cycle, period 60min.
each along x,y,z axes
MTBF according to MIL-HDBK-217F, G.B. +25°C
+40°C
1850 x 103 hours
1510 x 103 hours
Design Lifetime 230VAC/60Hz and full load +50°C >30 x 103 hours
-40 -20-30 -10 0 2010 30 5040 60 70 80 90
8565 75 100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
115-240VAC nom.
100VAC nom.
Derating Graph (7)
(@ Chamber and natural convection 0.1m/s)
othersRAC02E-3.3SK/277
-30-40 -20 -10 0 2010 30 5040 60 70 80 90 100
100
80
60
40
90
70
50
30
20
10
0
Output Load [%]
Ambient Temperature [°C]
115-240VAC nom.
100VAC nom.
Notes:
Note7: Output power derating for Line-input of less than 90VAC (derate linearly from 100% at 90VAC to 85% at 85VAC)
www.recom-power.com REV.: 0/2021 PA-5
AC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
RAC02E-K/277
Series
SAFETY AND CERTIFICATION
Certificate Type (Safety) Report Number Standard
Audio/Video, information and communication technology equipment - Part 1: Safety requirements E491408-A6014-
UL
UL62368-1:2019 3rd Edition
CAN/CSA-C22.2 No. 62368-1:2019
Audio/Video, information and communication technology equipment - Safety requirements
(CB Scheme) 200703001-1 IEC62368-1:2018 3rd Edition
Audio/Video, information and communication technology equipment - Safety requirements (LVD) EN IEC 62368-1:2020+A11:2020
Measurement methods for electromagnetic fields of household appliances and similar apparatus
with regard to human exposure (pending) EN62233:2008
Safety of power transformers, power supplies, reactors and similar products for supply voltages
up to 1100 V (CB Scheme)
(pending) IEC61558-1:2005 2nd Edition + A1:2009
Safety of power transformers, power supplies, reactors and similar products for supply voltages
up to 1100 V
(pending) EN61558-1:2005 + A1:2009
Safety of power transformers, power supplies, reactors and similar products for supply voltages
up to 1100 V Part 2: Particular requirements (CB Scheme)
(pending) IEC61558-2-16:2009 1st Edition + A1:2013
Safety of power transformers, power supplies, reactors and similar products for supply voltages
up to 1100 V Part 2: Particular requirements
(pending) EN61558-2-16:2009 + A1:2013
RoHS2 RoHS 2011/65/EU + AM2015/863
EMC Compliance (Industrial) Condition Standard / Criterion
Electromagnetic compatibility of multimedia equipment – Emission Requirements
EN55032:2015, Class B
Electromagnetic compatibility of multimedia equipment – Immunity requirements
EN55035:2017
ESD Electrostatic discharge immunity test Air: ±2, 4 ,8kV;
Contact: ±4kV
IEC61000-4-2:2008 , Criteria B
EN61000-4-2:2009, Criteria B
Radiated, radio-frequency, electromagnetic field immunity test
3V/m: 80-1000MHz, 1800MHz,
2600MHz, 3500MHz, 5000MHz
IEC/EN61000-4-3:2006 + A2:2010, Criteria A
Fast Transient and Burst Immunity AC Port: ±1kV IEC/EN61000-4-4:2012, Criteria B
Surge Immunity AC Port: ±1kV IEC/EN61000-4-5:2014, Criteria B
Immunity to conducted disturbances, induced by radio-frequency fields
3Vrms: 0.15-10MHz
3-1Vrms: 10-30MHz
1Vrms: 30-80MHz
IEC61000-4-6:2013/EN6100-4-6:2014, Criteria A
IEC61000-4-6:2013/EN6100-4-6:2014, Criteria A
IEC61000-4-6:2013/EN6100-4-6:2014, Criteria A
Power Magnetic Field Immunity IEC61000-4-8:2009
EN61000-4-8:2010
Voltage Dips and Interruptions IEC/EN61004-11:2004
Limits of Harmonic Current Emissions IEC/EN61000-3-2:2019
Limits of Voltage Fluctuations & Flicker Clause 5 EN61000-3-3:2013+A1
Limitations on the amount of electromagnetic interference allowed from digital
and electronic devices FCC 47 CFR Part 15 Subpart B, Class B
DIMENSION AND PHYSICAL CHARACTERISTICS
Parameter Type Value
Material
case/baseplate
potting
PCB
black plastic, (UL94 V-0)
silicone, (UL94 V-0)
FR4, (UL94 V-0)
Dimension (LxWxH) 33.7 x 22.2 x 15.4mm
Weight 18.4g typ.
continued on next page
www.recom-power.com REV.: 0/2021 PA-6
AC/DC Converter
Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
RAC02E-K/277
Series
Dimension Drawing (mm)
Recommended Footprint Details
Pinning Information
Pin # Single
1 VAC in (L)
2 VAC in (N)
3 -Vout
4 +Vout
General tolerances according to ISO 2768-m
(table for reference only)
Dimension range
0.5 - 6 mm
6 - 30 mm
30 - 120 mm
120 - 400 mm
Tolerances
±0.1 mm
±0.2 mm
±0.3 mm
±0.5 mm
PACKAGING INFORMATION
Parameter Type Value
Packaging Dimension (LxWxH) tube 490.0 x 36.3 x 26.3mm
Packaging Quantity 20pcs
Storage Temperature Range -40°C to +85°C
Storage Humidity non-condensing 95% RH max.
The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer.
The
products are not authorized for use in safety-critical applications without RECOM’s explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or
cause
loss of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the
unauthorized
use of RECOM products in such safety-critical applications.
1
23
4
1
2
4
3
33.7
33.1 21.6
2.54
2.54
Bottom View
15.4
Ø0.60±0.1
3.50
7.62
2.85 27.94
15.24
22.2
embossed logo
4.00±1.0
