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LFWLT40 Series
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Features
40 W convection cooled rating.
Small 4.0”x2.0”x1.2” inch form factor.
High efficiency > 85%.
Single to triple outputs.
Low conducted and radiated noise.
No Load Power< 0.3W
Class I & Class II options
Cover Kit accessory available.
Certificates
Click here for 3D models
Declaration of Conformity
CB Certificate - 1
NEMKO Certificate - 1
UL Certificate
Inst. Instruction C - I
HD Image
CB Certificate - 2
NEMKO Certificate - 2
ROHS-COC Certificate
Datasheet
Electrical Specifications
AC Input
90-264 V, Universal
Input Frequency
4
47-400Hz
Input Current
120 VAC: 0.85 A max.
230 VAC: 0.45 A max.
No Load Power
< 0.3W for single output models < 0.5W for multi output models
Inrush Current
120 VAC: 30 A max.
230 VAC: 60 A max.
Leakage Current
120 VAC: < 500 μA
230 VAC: < 1000 μA
Efficiency
1
120 VAC: 85% typical
230 VAC: 85% typical
Hold-up Time
>10 ms @ 120 VAC typical
Output Power
40 W
line Regulation
+/-0.3%
Load Regulation
V1: +/-0.5%; V2 & V3: +/-5%
Transient Response
< 10%, 50% to 100% load change, 50/60 Hz, 50% duty cycle, 0.1 A/μ s, recovery time < 5 ms
Rise Time
< 100 ms
Set Point Tolerance
V1: +/-3%; V2 & V3: +/-5%
Output Adjustability
V1:+/- 10%
Over Current Protection
130% typical above rating
Over Voltage Protection
130% typical for V1 only
Short Circuit Protection
Short term, auto recovery
Switching Frequency
Approximately 67 kHz
Operating Temperature
-20 to 70°C, refer derating curve,-20 to 0°C,start-up is guaranteed
Storage Temperature
-40 to +70°C
Relative Humidity
95% Rh, non condensing
Altitude
Operating: 10,000 ft.; Non-operating: 40,000 ft
MTBF
1.87m Hours, Telcordia -SR332-issue 3
Isolation Voltage
Min. 4242 VDC between input to output
Cooling
Convection
Model Number
Voltage
Max. Load
2
Min. Load
5
Ripple
3
LFWLT40-1000
V1=5.1 V
8.0 A
0.0 A
1%
LFWLT40-1001
V1=12 V
3.5 A
0.0 A
1%
LFWLT40-1002
V1=15 V
2.7 A
0.0 A
1%
LFWLT40-1003
V1=24 V
1.7 A
0.0 A
1%
LFWLT40-1004
V1=48 V
0.83 A
0.0 A
1%
LFWLT40-3000
V1=5.2 V, V2=12.5 V,
V3=-12.8 V
V1=6.0 A, V2=2.0 A,
V3=0.5 A
V1=0.5 A, V2=0.1 A,
V3=0.0 A
1%
LFWLT40-3001
V1=5.2 V, V2=23.8 V,
V3=-12.8 V
V1=6.0 A, V2=1.0 A,
V3=0.5 A
V1=0.5 A, V2=0.1 A,
V3=0.0 A
1%
LFWLT40-3002
V1=5.2 V, V2=14.6 V,
V3=-14.8 V
V1=6.0 A, V2=1.5 A,
V3=0.5 A
V1=0.5 A, V2=0.1 A,
V3=0.0 A
1%
LFWLT40-3003
V1=3.3 V, V2=5.2 V,
V3=-12.8 V
V1=6.0 A, V2=3.0 A,
V3=0.5 A
V1=1.0 A, V2=0.1 A,
V3=0.0 A
V1=1.5%,
V2, V3=1%
LFWLT60-CK metal cover kit accessory
Connectors
J1
Pin 1
AC NEUTRAL
Pin 2
AC LINE
Spade Connector
EARTH
J2
Pin 1
V1
Pin 2
V1
Pin 3
RTN
Pin 4
RTN
Pin 5
V3
Pin 6
V2
J3
Pin 1
+V1 SENSE
Pin 2
-V1 SENSE
Notes
1. For WLT40-3003 efficiency is 75% typical.
2. Maximum current per output channel. Do not exceed total output power rating.
3. Ripple is peak to peak with 20 MHz bandwidth and 10 μF (Tantalum capacitor) in parallel with a 0.1 μF capacitor at rated line voltage and load ranges.
4. Safety approved 47-63 Hz.
5. Min Load specified to meet cross regulation.
6. Add -2 suffix to order Class 2 product.
7. Specifications are for nominal input voltage, 25oC and max. load unless otherwise stated.
8. Derate output power linearly to 80% from 90 VAC to 80 VAC input.
9. Please refer mechnical outline drawing for height of component above and below PCB for - 1xxx and 3xxx.
Mechanical Specifications
AC Input Connector (J1)
Molex: 26-60-4030 or equivalent
Mating: 09-50-3031; Pins: 08-50-0106
EARTH
Molex: 19705-4301
Mating: 190030001
DC Output Connector (J2)
Tyco: 640445-6 or equivalent
Mating: 647402-6; Pins: 3-647409-1
Singal Connector(J3)
Molex: 22-23-2021 or equivalent
Mating: 22-01-2021
Dimensions
4.0 x 2.0 x 1.2 inches
(101.6 x 50.8 x 30.48 mm)
Weight
150 g
EMC
*
Parameter
Conditions/Description
Criteria
Conducted Emissions
EN55032-B, CISPR22-B, FCC PART15-B
Pass
Radiated Emissions
EN 55032 B
Pass
Input Current Harmonics
EN 61000-3-2
Class D
Voltage Fluctuation and Flicker
EN 61000-3-3
Pass
ESD Immunity
EN 61000-4-2
Level 3, Criterion A
Radiated Field Immunity
EN 61000-4-3
Level 3, Criterion A
Electrical Fast Transient Immunity
EN 61000-4-4
Level 3, Criterion A
Surge Immunity
EN 61000-4-5
Level 3, Criterion A
Conducted Immunity
EN 61000-4-6
Level 3, Criterion A
Magnetic Field Immunity
EN 61000-4-8
Level 3, Criterion A
Voltage dips, interruptions
EN 61000-4-11
Criterion A & B
Safety
*
CE Mark
Complies with LVD Directive
Safety Standard(s)
IEC60950-1(ed.2), EN60950-1, UL60950-1 (2nd Edition),
CSA C22.2 No. 60950-1 (2nd Edition), Class1 SELV
Approval Agency
Nemko, UL, C-UL
*
Safety File Number(s)
Class I : Nemko: P13216531, NO72727 UL/C-UL: E150565
Class II : Nemko: P13216532, NO72729 UL/C-UL: E150565
Derating Curve
De-rate linearly from 100% at 50°C to 75% at 70°C
Mechanical Drawing
WLT40 - 1xxx
Notes: In case the PCB is mounted in a metal enclosure, using metal hardware ensure the following
1. Stand off, used to mount PCB has OD of 5.4 mm max.
2. Screws, used to fix PCB on stand off, have head dia of 6.0 mm max.
3. Washer, if used, to have dia of 6.5 mm max.
WLT40 - 3xxx
Notes: In case the PCB is mounted in a metal enclosure, using metal hardware ensure the following
1. Stand off, used to mount PCB has OD of 5.4 mm max.
2. Screws, used to fix PCB on stand off, have head dia of 6.0 mm max.
3. Washer, if used, to have dia of 6.5 mm max.
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