QS4A_1.5UP series
0.25W - Single Output DC-DC Converter - Fixed Input - Isolated & Unregulated
DC-DC Converter
0.25 Watt
Compact SIP Package
1.5kVDC Isolation
Internal SMD Construction
No External Component
Required
The QS4A_1.5UP series are specially designed for applications where
an isolated voltage is required in a distributed power supply system.
They are suitable for. These products apply to:
1) Where the voltage of the input power supply is stable
(Voltage variation ≤ ±10ꢀ)
Temperature Range:
-40°C ~ +105°C
Industry Standard Pinout
RoHS Compliance
No Heatsink Required
IEC60950, UL60950, EN60950
approved
2) Where isolation is necessary between input and output
(Isolation voltage ≤1500VDC)
3) Where the regulation of the output voltage and the output ripple
noise are not demanding.
4) Typical application: digit circuit condition; normal low-frequency
artificial circuit condition; relay drive circuit and data switching circuit
condition, etc.
UL-60950-1 (E347551)
Common specifications
Short circuit protection:
Cooling:
Output specifications
Continuous, self-recovery
Free air convection
-40°C~+105°C
Item
Test condition
Min
Typ
Max Units
Output voltage
accuracy
See tolerance envelope
graph
Operation temperature range:
Storage temperature range:
Casing temperature rise at full load:
Lead temperature:
Line regulation
For Vin change of ±1ꢀ
• 3.3V output
• others output
-55°C ~+125°C
±1.5
±1.2
ꢀ
ꢀ
5°C TYP
Load regulation
10ꢀ to 100ꢀ load
• 3.3V output
• 5V/9V/12V output
300°C MAX, 1.5mm from case for 10 sec
< 95ꢀ
7
5
15
10
ꢀ
ꢀ
Storage humidity range:
Case material:
Plastic [UL94-V0]
>3,500,000 hours
1.2g
Ripple & Noise*
20MHz Bandwidth
25
75
mVp-
p
MTBF (MIL-HDFK-217F@25°C):
Weight:
Temperature drift
100ꢀ full load
±0.02
110
ꢀ/°C
KHz
Switching
frequency
Full load, nominal
input
Dimensions:
11.60*6.00*10.16 mm
Input specifications
Item
Test condition
• 3.3VDC input
Min
Typ
Max
Units
EMC specifications
Input current
(full load / no load) • 5VDC input
• 9VDC input
103/20
66/15
27/10
25/5
-/40
-/30
-/20
-/15
-/10
mA
mA
mA
mA
mA
EMI
EMI
EMS
CE
CISPR22/EN55022 CLASS B
(see EMC recommended circuit)
RE
CISPR22/EN55022 CLASS B
(see EMC recommended circuit)
• 12VDC input
• 15VDC input
15/4
ESD
IEC/EN61000-4-2
Contact ±±KV perf. Criteria B
Reflected ripple
current
• 3.3V/5V input
• 12V/15V/24V input
20
5
mA
mA
Surge voltage
• 3.3VDC input
• 5VDC input
• 9VDC input
• 12VDC input
• 15VDC input
-0.7
-0.7
-0.7
-0.7
-0.7
5
VDC
VDC
VDC
VDC
VDC
9
1±
21
30
Example SIP4 Case:
QS4A_0505S1.5UP
Q = 0,25 Watt; S4 = SIP4; A = Pinning; 05 = 5 Vin; 05 = 5Vout;
S = Single Output; 1.5 = 1.5kVDC isolation; U = Unregulated Output;
P = Short circuit protection (SCP)
Input filter
Hot plug
Filter capacitor
Unavailable
Note:
Isolation specifications
1. Operation under minimum load will not damage the converter; However, they
may not meet all specification listed, and that will reduce the life of product.
2. All specifications measured at Ta = 25°C, humidity <75ꢀ, nominal input
voltage and rated output load unless otherwise specified.
3. Only typical models listed, other models may be different, please contact our
technical person for more details.
Item
Test condition
Min
1500
Typ
Max
Units
VDC
Isolation voltage
Tested for 1 minute
and 1mA max
Isolation resistance
Test at 500VDC
1000
MΩ
pF
4. In this datasheet, all the test methods of indications are based on corporate
standards.
Isolation capaci-
tance
Input-output,
100KHz/0.1V
20
Page 1 of 3
QS4A_1.5UP – Rev. 2021-1.3
Specifications subject to change without notice.
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com
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