WRA-ZD-5W&WRB-ZD-5W
Series
5W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC-DC CONVERTER
DC-
Models
Input voltage
Order code
range
*
Output voltage
max.
3.3VDC
5VDC
12VDC
15VDC
±5VDC
±12VDC
±15VDC
3.3VDC
5VDC
12VDC
15VDC
±5VDC
±12VDC
±15VDC
1167mA
810mA
346mA
277mA
±400mA
±173mA
±138mA
1182mA
820mA
354mA
283mA
±410mA
±177mA
±142mA
77%
81%
83%
83%
80%
83%
83%
78%
82%
85%
85%
82%
85%
85%
Output current
Efficiency typ.
FEATURES
◆Ultra
wide
4:1
Input Range 9–36VDC or 18–75VDC
◆Full
SMD-Design
◆High
Efficiency up to 85%
◆Indefinite
Short-Circuit Protection
◆Reverse
Voltage Protection
◆I
/ O-isolation 1500 VDC
◆Input
Filter meets EN 55022, Class A and FCC,
Level A without external Components
◆Shielded
Metal Case with insulated Baseplate
◆24-pin
DIP with industry Standard Pin out
◆MTBF
>1 Mio. H
◆2
Year Product Warranty
WRB2403ZD-5W
WRB2405ZD-5W
WRB2412ZD-5W
WRB2415ZD-5W
WRA2405ZD-5W
WRA2412ZD-5W
WRA2415ZD-5W
WRB4803ZD-5W
WRB4805ZD-5W
WRB4812ZD-5W
WRB4815ZD-5W
WRA4805ZD-5W
WRA4812ZD-5W
WRA4815ZD-5W
9 – 36VDC
9 – 36VDC
9 – 36VDC
9 – 36VDC
9 – 36VDC
9 – 36VDC
9 – 36VDC
18 – 75VDC
18 – 75VDC
18 – 75VDC
18 – 75VDC
18 – 75VDC
18 – 75VDC
18 – 75VDC
*Input voltage can’t exceed this value,or will cause the permanent damage.
MODEL SELECTION
WRB
①
24
②
12
③
Z
④
D
⑤
-5W
⑥
①Product
Series
②Input
Voltage
③Output
Voltage
④Wide
(4:1) Input Range
Package Style
⑥
Rated Power
⑤DIP24
Physical Specifications
Case material
Baseplate
Potting material
Weight
Soldering temperature
Steel chrome-nickel plated
Epoxy
Silicon rubber TSE (flammability to UL 94V-0)
14 g (0.55 oz)
max. 260 °C / 10 sec
APPLICATIONS
The WRA(B)-ZD-5W series DC/DC converter is designed for
applications requiring very wide operating voltage range.
Typical applications are tele- and data communication
systems, mobile battery powered equipments and industrial
process control systems with operation from different input
voltages i.e. 12/24 VDC or 24/48 VDC battery voltages. High
efficiency allows operation up to 75°C without derating. Input
filtering according EN 55022-A and FCC, level A. Low output
ripple minimise design-in time and cost.
MICRODC reserves the copyright
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 3
WRA-ZD-5W&WRB-ZD-5W
Series
Input Specifications
20 mA / 400 mA typ. (at 12 VDC Vin)
24 Vin models
20 mA / 200 mA typ. (at 24 VDC Vin)
Input current no load /full load
6 mA / 200 mA typ. (at 24 VDC Vin)
48 Vin models
6 mA / 100 mA typ. (at 48 VDC Vin)
24 Vin models
Start-up voltage / under voltage shut down
48 Vin models
24 Vin models
Surge voltage (1 sec. max.)
48 Vin models
Reverse voltage protection
Conducted noise
(input)
100 V max.
1.0 A max.
EN 55022 level A, FCC part 15, level A
17 VDC /16
50 V max.
VDC typ.
8.5 VDC /8.0 VDC typ.
Output Specifications
Voltage set accuracy
– Input variation
Vin min. to Vin max.
±1%
± 0.3 % max.
– Load variation 10 – 100%
Regulation
– single output model
– dual output models balanced load
– dual output models unbalanced load
Ripple and noise
(20 MHz Bandwidth)
± 1.0 % max.
± 1.0 % max.
± 3.0 % max.
450 mVpk-pk max
± 0.02 % /
℃
> 110% of Iout max., constant current
Hiccup mode, indefinite (automatic recovery)
– single output model
Capacitive load
– dual output model
300 μF max.
680 μF max.
Temperature coefficient
Current limitation
Short circuit protection
General Specifications
– Operating
Temperature ranges
– Case temperature
– Storage
Humidity (non condensing)
Reliability, calculated MTBF (MIL-HDBK-217 E)
Isolation voltage
Isolation capacity
Isolation resistance
Switching frequency
Safety standards
Safety approval
All specifications
Input/Output
Input/Output
Input/Output (500 VDC)
– 40°C ... + 75°C(no derating)
+ 95 °C max.
– 40 °C ... + 125 °C
95 % rel H max.
>1 Mio. h @ + 25 °C
1500 VDC
380 pF typ
> 1000 M Ohm
350 kHz typ. (Pulse frequency modulation PFM)
UL 1950 , IEC 60950, EN 60950
Compliance up to 60 VDC input voltage(SELV
limit)
cUL / UL File E188913
valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 3
WRA-ZD-5W&WRB-ZD-5W
Series
Outline Dimensions mm (inches)
Pin-Out
Pin
2
3
9
11
14
16
22
23
Single
–Vin (GND)
–Vin (GND)
No pin
No function
+Vout
–Vout
+Vin (Vcc)
+Vin (Vcc)
Dual
–Vin (GND)
–Vin (GND)
Common
–Vout
+Vout
Common
+Vin (Vcc)
+Vin (Vcc)
Pin diameter Ø 0.5 ±0.05 (0.02 ±0.002)
Tolerances ±0.5 (0.02)
RECOMMENDED FOOTPRINT
TUBE OUTLINE DIMENSIONS
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature
of 300°C for 10 seconds.
The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin
with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this
series are backward compatible with Sn/Pb soldering systems.
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646
E-mail:tech@microdc.cn
Website:http://www.microdc.cn
REACH COMPLIANT INFORMATION
This series has proven that this product does not contain harmful chemicals, it also has
harmful chemical substances through the registration, inspection and approval.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 3 of 3
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