cui.com

date 07/08/2021

│ page 2 of 5

CUI Inc

│ SERIES: PEM1A-S │ DESCRIPTION: DC-DC CONVERTER

INPUT

parameter

conditions/description

min

typ

max

units

operating input voltage

4.5

5

5.5

Vdc

OUTPUT

parameter

conditions/description

min

typ

max

units

1200

μF

voltage accuracy

at full load, Vin nominal,

see tolerance envelope curves

±5

%

line regulation

for Vin change of 1%

measured from low to high line, full load

±1.2

%

load regulation

measured from 10~100% load

±12

±15

%

switching frequency

at Vin nominal

50

65

105

kHz

Note:

1. Maximum capacitive load is defined as the capacitive load that will allow start up in under 1 second without damage.

SAFETY AND COMPLIANCE

parameter

conditions/description

min

typ

max

units

isolation voltage

input to output for 1 second

4,000

Vdc

isolation resistance

at 500 Vdc

1,000

MΩ

isolation capacitance

75

pF

safety approvals

UL/cUL (60950-1, 2nd Edition)

MTBF

as per MIL-HDBK-217F, full load, 25°C

as per MIL-HDBK-217F, full load, 85°C

850,000

123,000

hours

hours

RoHS

2011/65/EU

ENVIRONMENTAL

parameter

conditions/description

min

typ

max

units

operating temperature

-40

85

°C

storage temperature

-55

125

°C

operating humidity

non-condensing

95

%

SOLDERABILITY

parameter

conditions/description

min

typ

max

units

wave soldering

see wave solder profile

260

°C

Note:

2. The wave solder profile is measured on lead temperature.

3. Need to keep the solder parts internal temperature less than about 210°C.

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