QT8E_3UP Series
0.25W - Single Output DC-DC Converter - Fixed Input - Isolated & Unregulated
DC-DC Converter
0.25 Watt
The QT8E_3UP products are an ideal and economical solution for many applications
where noise reduction, voltage isolation, voltage conversion in distributed power
systems are required. These converters are qualified for the higher temperatures
requested by lead-free reflow solder processes, especially for automated SMD pro-
duction lines.
3000VDC isolation
Industry standard pinout
RoHS Compliance
Short circuit protection (SCP)
Small footprint (over pins
1.37cm2)
Efficiency up to 78%
Operating temperature range:
-40°C ~ +105°C
Power density 1.8W/cm3
These products apply to:
1) Where the voltage of the input power supply is fixed
(Voltage variation ≤ 10ꢀ)
2) Where isolation is necessary between input and output
(Isolation voltage ≤3000VDC)
3) Where the regulation of the output voltage and the output ripple
noise are not demanding.
Common specifications
Short circuit protection:
Temperature rise at full load:
Cooling:
Output specifications
Continuos, automatic recovery
15°C TYP
Item
Test condition
Min Typ
Max
1.2
Units
ꢀ
Voltage set point
accuracy
See tolerance envelope
curve
Free air convection
Line regulation
Input voltage change:
1ꢀ
Operation temperature range:
-40°C~+105°C / Derating when
operating temperature up to 100°C
Load regulation
Ripple & Noise*
Temperature drift
10ꢀ to 100ꢀ load
20MHz Bandwidth
100ꢀ full load
12
15
ꢀ
Storage temperature range:
Pin welding resistance temperature:
Storage humidity range:
Case material:
-55°C ~+125°C
100
mVp-p
300°C MAX, 1.5mm from case for 10 sec
0.03 ꢀ/°C
KHz
< 95ꢀ
Switching frequency Full load, nominal input
100
UL 94V-0
* Test ripple and noise by “parallel cable” method. See detailed operation
instructions at application notes.
MTBF (MIL-HDBK-217F@25°C):
Dimensions:
>3,500,000 hours
12.70*11.20*7.25 mm
1.5g
Weight:
EMC specifications
EMI
EMI
EMS
CE
CISPR22/EN55022
CLASS B
(see EMC recommended circuit)
Input specifications
RE
CISPR22/EN55022
(see EMC recommended circuit)
CLASS B
Item
Test condition
Min
Typ
Max
Units
Input current
(full load/no load)
• 5V input
• 12V input
68/15
27/10
mA
mA
ESD
IEC/EN61000-4-2 Contact 8KV perf. Criteria B
Reflected ripple
current
• 5V input
• 12V input
20
5
mA
mA
Example SIP4 Case:
QT8E_0505S3UP
Q= 0,25 Watt; T8= SMT8; E= Pinning; 05= 5Vin; 05= 5Vout;
S= Single Output; 3= 3kVDC Isolation; U= Unregulated Output
P= Short circuit protection
Surge voltage
(1sec. max)
• 5V input
• 12V input
-0.7
-0.7
9
18
mA
mA
Input filter
Hot plug
Filter capacitor
Unavailable
Note:
1. Operation under minimum load will not damage the converter; However, they
may not meet all specifications.
2. Max. capacitive load is tested at nominal input voltage and full load.
3. Unless otherwise noted, All specifications are measured at Ta=25°C,
humidity<75ꢀ, nominal input voltage and rated output load.
4. In this datasheet, all test methods are based on our corporate standards.
5. All characteristics are for listed models, and non-standard models may perform
differently. Please contact our technical support for more detail.
6. Please contact our technical support for any specific requirement.
7. Specifications of this product are subject to changes without prior notice.
Isolation specifications
Item
Test condition
Min
3000
Typ
Max
Units
VDC
Isolation voltage
Tested for 1 minute
and 1mA max
Isolation resistance
Input-output, isolation 1000
voltage = 500VDC
MΩ
Part Number
Input Voltage Range
[VDC]
Output Voltage
[VDC]
Output Current
[mA, max]
Efficiency
[%, typ.]
Capacitive load
[µF, max.]
QT8E_0505S3UP
QT8E_1205S3UP
5
5
5
50
50
77
77
220
220
12
Page 1 of 4
QT8E_3UP – Rev. 2018-1.0
Specifications subject to change without notice.
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com
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