BOTHHAND ENTERPRISE INC.
Isolated DC-DC Converters
B_S-2WR2 Series
Features
4 pin SIP package
Input / Output Isolation Voltage: 1.5kVDC
High Efficiency
Lead Free Design, RoHS Compliant
Operating temperature: -40°C to +85°C
Optional Continuous Short Circuit Protection
Continuous Short Circuit Protection
Meet Safety Standard / Approval: IEC / EN60950-1
Applications
These converters are well suitable for battery operated
equipment, measurement equipment, telecom, wireless
network, Industry control system, everywhere where
isolated, tightly regulated voltages and compact size are
required.
Technical Specification
Model
Number
B0505S-2WR2
B0512S-2WR2
B0515S-2WR2
B0524S-2WR2
B1205S-2WR2
B1212S-2WR2
B1215S-2WR2
B1224S-2WR2
B2405S-2WR2
B2412S-2WR2
B2415S-2WR2
B2424S-2WR2
21.6 ~ 26.4
Nominal: 24
10.8 ~ 13.2
Nominal: 12
4.5 ~ 5.5
Nominal: 5
Input Voltage
Range(V)
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
Output
Voltage
(V)
5
12
15
24
5
12
15
24
5
12
15
24
Output Current (mA)
Full Load
200
80
65
65
200
80
65
65
200
80
65
65
Capacitive
Load, max. (uF)
470
220
220
100
470
220
220
100
470
220
220
100
Efficiency .
(2)
(%)
79
82
82
82
79
82
82
82
79
82
82
82
Note
1. Io below this value will not damage these converters, however, they may not meet all listed specifications.
2. Typical value, tested at nominal input and full load.
3. For each output.
4. In case of long input lines or hot plug-in requirements, we recommended to use an external low ESR capacitor
(22uF) near to the converter's input pins.
5. Specifications subject to change without notice.
E-mail:
sales@bothhand.com.tw
http://www.bothhand.com.tw
Rev: 20200309A0
Page 1 of 7
BOTHHAND ENTERPRISE INC.
Input Specifications
5 Vin models
Input voltage
12Vin models
24Vin models
5 Vin models
Input current at no load
12Vinmodels
24Vinmodels
5 Vin models
Surge voltage (1 s max.)
12Vin models
24Vin models
5 Vin models
Recommended input fuse
12Vin models
24Vin models
Isolated DC-DC Converters
B_S-2WR2 Series
4.5~5.5V
10.8~13.2V
21.6~26.4V
35mA(typ.)
18mA(typ.)
10mA(typ.)
9V(Max.)
18V(Max.)
30V(Max.)
1A (slow-blow fuse)
0.4A (slow-blow fuse)
0.2A (slow-blow fuse)
Input filter
Capacitor
Environmental Specifications
Operating ambient temperature
Maximum case temperature
Storage temperature range
Relative humidity
Natural convection
-40°C to +85°C
+95°C
-55°C to +125°C
95% RH max.
Output Specifications
Output power
Voltage accuracy
(Nominal Vin and full load)
Minimum load
Regulation
Ripple and Noise (20MHz Bandwidth)
Maximum capacitive load
Temperature coefficient
Short Circuit Protection
Automatic recovery
5VDC models
Other models
Input variation
Load variation
2 Watts max.
±3% at 60% load
±3% at 80% load
0A
±1.5% max.for Vin Change of 1%
See graphs below
120mVp-p typ.
250mVp-p max.
See table
±0.02%/°C max.
Continuous
General Specifications
Efficiency
Isolation voltage(60s)
Isolation resistance
Isolation capacitance
Switching frequency
Start-up time
Nominal Vin and full load
Nominal input and full load
Input to output
500VDC
See table
1500VDC
1GΩ min.
＜20pF.
30K-200KHz.
≤10ms
E-mail:
sales@bothhand.com.tw
http://www.bothhand.com.tw
Rev: 20200309A0
Page 2 of 7
BOTHHAND ENTERPRISE INC.
Reliability, calculated MTBF
Isolated DC-DC Converters
B_S-2WR2 Series
2×10 Hrs
Plastic (UL94 V-0)
Epoxy (UL94 V-0)
0.46 × 0.295 × 0.4 Inch
(11.6 × 7.5 × 10.2 mm)
6
Physical Specifications
Case material
Potting material
Dimensions
Weight
Pin material
1.6g (0.057oz) typ.
Tinned copper
Output voltage variation dependent on load (at nominal input voltage)
5VDC Output
Other Output
Tolance Envelope Curve
Deviation of Vout nom. (%)
10
7.5
5
Voltage accuracy %
Tolance Envelope Curve
Deviation of Vout
%
nom. (%)
Voltage accuracy
10
7.5
5
2.5
0
-2.5
-5
-7.5
-10
20%
40%
60%
80%
100%
2.5
0
-2.5
-5
-7.5
-10
20%
40%
60%
80%
100%
max.
typ.
max.
typ.
min.
min.
Load (%)
Load (%)
Load (%)
Load (%)
Power Derating Curve
Power Derating Curve
120
100
Output Power (%)
80
60
40
Natural
Convection
20LFM
20
0
-40
-20
0
20
40
60
80
95
100
120
Ambient Temp.TA (℃)
E-mail:
sales@bothhand.com.tw
http://www.bothhand.com.tw
Rev: 20200309A0
Page 3 of 7
BOTHHAND ENTERPRISE INC.
Mechanical Dimensions
Isolated DC-DC Converters
B_S-2WR2 Series
Pin Assignment
Pin
1
2
3
4
Single
-Vin
+Vin
-Vout
+Vout
Unit: mm (inch)
Pin section tolerances:±0.1(±0.004)
General tolerances:±0.5(±0.02)
Test Configurations
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
A
DC
Power Supply
A
V
DC/DC
converter
V
Load
◎DC
Power Supply:
It offers a wide voltage and current range precisely.
◎Current
meter (A): Accuracy
200μA ~ 200mA 4 ranges+(0.2% rdg + 2 digits)
2000mA ~ 20A 2 ranges+(0.3% rdg + 2 digits).
◎Voltage
meter (V): Accuracy
+(0.03% rdg + 4 digits).
◎Load:
At full load.
◎Wires:
The resistance of the wires must be small.
1.
Input voltage range:
Narrow input voltage range（±10%）
、wide
input voltage range (2:1 and 4:1）
。
E-mail:
sales@bothhand.com.tw
http://www.bothhand.com.tw
Rev: 20200309A0
Page 4 of 7
BOTHHAND ENTERPRISE INC.
EX: Narrow input voltage range（±10%）
5V nominal input
4.5~5.5V
12V nominal input
10.8~13.2V
24V nominal input
21.6~26.4V
Wide input voltage range 2:1
5V nominal input
12V nominal input
24V nominal input
48V nominal input
4.5~9V
9~18V
18~36V
36~75V
Isolated DC-DC Converters
B_S-2WR2 Series
Wide input voltage range 4:1 (W)
24V nominal input
9~36V
48V nominal input
18~75V
2.
Input power
:
Pin = Vin x Iin
Vin：Input voltage
Iin：Input current
Vout：Output voltage
Iout：Output current
3.
Output power
:
Pout = Vout x Iout
4.
Efficiency
:
Efficiency =
Pout
Pin
x100%
Pout: Output power
Pin: Input power
5.
Voltage accuracy:
│Vout-Vout(nominal)│
Vout
x100%
Vout：Output voltage
Vout(nominal)：Nominal output voltage
6.
Line regulation:
Narrow input voltage range（±10%）and unregulated output voltage series.
Line regulation=
ΔVout
= Vout(+10%)-Vout(-10%) x100%
Vout
Vout(+10%)：Output voltage at Vin = 1.1xVin(nominal)&full load
Vout(-10%)：Output voltage at Vin = 0.9xVin(nominal)&full load
Vout：Output voltage at Vin = Vin(nominal)&full load
ΔVin
= Vin(+10%)-Vin(-10%) x100%
Vin(nominal)
Vin(+10%)：Input voltage = 1.1xVin(nominal)
Vin(-10%)：Input voltage = 0.9xVin(nominal)
E-mail:
sales@bothhand.com.tw
http://www.bothhand.com.tw
Rev: 20200309A0
Page 5 of 7
│
│
ΔVout
ΔVin
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