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WLP Blue Series offers the size conscious customer industry leading watts per cubic inch in height profiles ranging from 25 mm to 30 mm in industry standard footprints. The Blue Series allows customers shrink their applications without compromising on power, quality or functionality.

  • 3 x 2 x 1 Inches Form factor
  • 75 Watts Convection
  • Efficiencies up to 93 %
  • -40 to 70 degree operating temperature
  • Thermal Shut-Down feature
  • 2.00m Hours, Telcordia-SR332-issue 3
  • No Load Power < 0.3W

Input Specifications
Input Voltage 85-264 VAC/390 VDC3, Universal (Derate from 75W at 100V AC to 65W at 85V AC)                                                      
Input Frequency 47-63 Hz
Input Current 1 A max @ 115 VAC AND 0.5 A max @ 230 VAC
No Load Power less than 0.3W typical
Inrush Current 25 A @ 115 VAC; 45 A @ 230 VAC; 75 A @ 264 VAC
Output Specifications
Output Voltage From 12V to 58V (See model number matrix table)
Output Power 75 W Convection
Output Voltage Adjustability +/-3 %
Hold-up Time >16 ms typical
Line Regulation +/-0.5 %
Load Regulation +/-1 %
Minimum Load 0.0 A
Transient Response max excursion 4 %; 25 % step load change at 0.1A/uS slew rate, 50 % duty cycle, 50/60Hz, recovery time < 5 ms.
Ripple1 1.0 % max for all outputs.
Rise Time 55 ms typical
Set Point Tolerance +/-1 %
Over Current Protection Typ 110 %
Over Voltage Protection 110 to 140 %, Latch type (AC recycling required)
Short Circuit Protection Hiccup mode
Cooling 75W with natural convection cooling at 100 to 264 VAC.
General Specifications
Efficiency 93 % (48V,58V). 91 % (24V,30V), 90 % (12V,15V)                                    
Isolation Voltage Input to Output – 3000 VAC for ITE application
Input to GND - 1500 VAC
MTBF 2.00m Hours, Telcordia-SR332-issue 3
Switching Frequency 60 KHz typical
Power Factor Exceeds 0.95 with Full Load
Dimensions 3 x 2 x 1 inches
(76.2 x 50.8 x 25.4 mm)
Weight 150 gm approx
Environmental Specifications
Operating Temperature - 40 to +70°C, (-40 to 0°C startup is guaranteed with spec deviation)2                                    
Storage Temperature -40 to +85°C
Relative Humidity 5 % to 95 %, noncondensing
Altitude Operating: 16,000 ft.; Non-operating: 40,000 ft
Model Number Power Voltage Max. Load
LFWPL75-1X0175 W12 V6.25 A
LFWPL75-1X0275 W15 V5.00 A
LFWPL75-1X0375 W24 V3.12 A
LFWPL75-1X0475 W48 V1.56 A
LFWPL75-1X0575 W30 V2.50 A
LFWPL75-1X0675 W58 V1.29 A
For Screw Terminal version replace "X" above with "0", example LFWPL75-1005
For Header version replace "X" above with "3", example LFWPL75-1305
LFWLP120/75-CK metal cover kit accessory available.
General Notes:
  • Specifications are for nominal input voltage, 25°C unless otherwise stated.
  • When used in Cover Kit, de-rate output power to 70 % under all operating conditions
  • For Class II version Enquire with EOS Sales Rep before Order.
  1. Ripple is peak to peak with 20 MHz bandwidth and 10 μF (Electrolytic capacitor) in parallel with a 0.1 μF capacitor at rated line voltage AND load ranges.
  2. Output ripple can be more than 10% of the output voltage.
  3. Functional,not approved.
Derating Curve
De-rate linearly from 100 % at 50°C to 50 % at 70°C
Parameter Conditions/Description Criteria
Conducted Emissions EN55032-B, CISPR22-B, FCC PART15-B Pass
Radiated Emissions EN 55032 A Pass
Level B with external core (King core K5B RC 25x12x15-M in input cable)
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
CE Mark Complies with LVD Directive
Safety Standard(s) EN60950-1, IEC 60950-1:2005 (Ed 2) , UL 60950-1 Ed 2, CAN/CSA C22.2 No. 60950-1-07 Ed 2,
GB4943. 1-2011 ; GB9254-2008 ; GB17625. 1-2012
Approval Agency Nemko, UL, C-UL, CCC
Safety File Number(s) CB Test Certificate No :NO88704 , Nemko: Certificate No: P15220324 , UL: E150565
RoHS Version LFWLP75 series meet RoHS Compliance as per european RoHS directive
(Directive 2011 / 65 / EU)
CB Class - I Certificate
NEMKO Class - I Certificate
UL Class - I Certificate
Mechanical Specifications
AC Input Connector (J1)
Option 1
Molex: 39357-0003
Tyco: 2-1776112-3
Pin 1
Pin 2
Pin 3
AC Input Connector (J1)
Option 2
(Mating conn: Molex 1722561003)
Pin 1
Pin 2
Pin 3
DC Output Connector (J2))
Option 1
Molex: 39357-0004
Tyco: 2-1776112-4
Pin 1,2
Pin 3,4
V1 -VE
V1 +VE
DC Output Connector (J2)
Option 2
(Mating conn: Molex 1722561004)
Pin 1,2
Pin 3,4
V1 -VE
V1 +VE
Screw Terminal
Tyco Header
    General 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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