
OUTPUT SPEC IFICATIONS 
Output power     5 Watts max 
Voltage accuracy   Full load and nominal Vin  ± 2% 
Minimum load (Note 1) 
10% of FL
Line regulation    LL to HL at Full Load 
± 0.2%
Load regulation    
10% to 100% FL Single 
Dual
± 0.2%
± 1%
Cross regulation (Dual) Asymmetrical load 25% / 100% FL  ± 5% 
Ripple and noise    20MHz bandwidth  50mVp-p 
Temperature coefficient 
I0.02% / ºC, max
Transient response  
recovery time
25% load step change  
FL to 1/2 FL I1% error band 
Single 200uS
Dual 200uS
Over load protection  % of FL at nominal input  170% typ 
Short circuit protection  Continuous, automatics recovery
INPUT SPECIFICA TIONS 
Input voltage range 
FDC05 
FDC05-W 
12V nominal input 
24V nominal input 
48V nominal input 
24V nominal input 
48V nominal input 
9 – 18VDC 
18 – 36VDC 
36 – 75VDC
9 – 36VDC 
18 – 75VDC
Input filter   Pi type 
Input surge voltage  
100mS max
12V input 
24V input 
48V input 
36VDC 
50VDC
100VDC
Input reflected ripple (Note 2)  Nominal Vin and full load  20mAp-p 
Start up time  Nominal Vin and constant resistor load  600mS typ
Remote ON/OFF (Note 3) 
(Positive logic) 
(Negative logic) 
Remote off input current 
DC-DC ON 
DC-DC OFF 
DC-DC ON 
DC-DC OFF 
Nominal Vin 
Open or 3.5V < Vr < 12V
Short or 0V < Vr < 1.2V 
Short or 0V < Vr < 1.2V
Open or 3.5V < Vr < 12V
2.5mA
GENERAL SPECIFICATIONS 
Efficiency See table 
Isolation Voltage    Input to Output to Case  1600VDC, min 
Isolation resistance 
10
9
ohms, min
Isolation capacitance  300pF, ma
Switching frequency 
Standard 
“W” series 
300KHz, typ 
200KHz, typ
Approvals and standard   IEC60950, UL1950, EN60950 
Case material  Nickel-coated coppe
Base material  Non-conducted black plastic 
Potting material  Epoxy (UL94-V0)
Dimensions 
2.00 X 1.00 X 0.40 Inch 
(50.8 X 25.4 X 10.2 mm)
Weight  27g (0.95oz) 
MTBF (Note 4)  3.145 x 106 hrs
ENVIRONMENTAL SPECIFICATIONS 
Operating temperature range 
(Reference derating curve)  
Standard 
M1 (Note 5) 
M2 (W series) 
-25ºC ~ +85ºC (with derating)
-40ºC ~ +85ºC (non-derating)
-40ºC ~ +85ºC (with derating)
Maximum case temperature  +100ºC 
Storage temperature range  -55ºC ~ +105ºC
Thermal impedance (Note 6)
Nature convection 
Nature convection with heat-sink 
12ºC
watt
Thermal shock  MIL-STD-810D 
Vibration  10~55Hz, 2G, 30minutes along X,Y and Z 
Relative humidity  5% to 95% RH
EMC CHARACTER IS TI CS 
Conducted emissions  EN55022   Level A 
Radiated emissions  EN55022  Level A 
ESD EN61000-4-2 Perf. Criteria
Radiated immunity  EN61000-4-3  Perf. Criteria
Fast transient  EN61000-4-4  Perf. Criteria
Surge EN61000-4-5 Perf. Criteria
Conducted immunity  EN61000-4-6  Perf. Criteria
The FDC05 and FDC05-W series offer 5 watts of output power from a 2 x 1 x 0.4 inch 
package without derating to 71ºC ambient temperature. FDC05 series have 2:1 wide input 
voltage of 9-18, 18-36 and 36-75VDC. FDC05-W series have 4:1 ultra wide input voltage of 
9-36 and 18-75VDC. The FDC05 and FDC05-W features 1600VDC of isolation, short-circuit 
protection, as well as six sided shielding. The safety approve with EN60950 and UL1950. All 
models are particularly suited to telecommunications, industrial, mobile telecom and test 
equipment applications. According the extended operation temperature range, there are 
“M1” and “M2” version for special application. 
TECHNICAL SPECIFICATION All specifications are typical at nominal input, full load and 25ºC otherw ise noted 
UL E193009 
TUV R3-50007936 
CB JPTUV-003641 
CE MARK 
• 5 WATTS OUTPUT POWER 
• 2:1 AND 4:1 WIDE INPUT VOLTA GE RANGE 
• INTERNATIONAL SAFETY STANDARD APPROVAL 
• SIX-SIDED CONTINUOUS SHIELD 
• HIGH EFFICIENCY UP TO 83% 
• STANDARD 2” X 1” X 0.4” PACKAGE 
• FIXED SWITCHING FREQUENCY 
 

Model 
Number 
Input 
Range 
Output 
Voltage 
Output 
Current 
Input 
Current 
(7)
Eff 
(%) 
Capacitor 
Load max
(9)
FDC05-12S33  9 – 18 VDC  3.3 VDC  1000mA 
387mA 
75  3700uF 
FDC05-12S05  9 – 18 VDC  5 VDC  1000mA 
556mA 
79 1700uF 
FDC05-12S12  9 – 18 VDC  12 VDC  470mA  610mA  81  290uF 
FDC05-12S15  9 – 18 VDC  15 VDC  400mA  658mA  80  188uF 
FDC05-12D05  9 – 18 VDC  ± 5 VDC  ± 500mA  595mA  74  ± 850uF 
FDC05-12D12  9 – 18 VDC  ± 12 VDC  ± 230mA  597mA  81  ± 140uF 
FDC05-12D15  9 – 18 VDC  ± 15 VDC  ± 190mA  609mA  82  ± 47uF 
FDC05-24S33 (W)  18 – 36 (9 – 36) VDC  3.3 VDC  1000mA  199 (196mA)  73 (74)  3700uF 
FDC05-24S05 (W)  18 – 36 (9 – 36) VDC  5 VDC  1000mA  282 (274mA)  78 (80)  1700uF 
FDC05-24S12 (W)  18 – 36 (9 – 36) VDC  12 VDC  470mA  305 (301mA)  81 (82)  290uF 
FDC05-24S15 (W)  18 – 36 (9 – 36) VDC  15 VDC  400mA  325 (325mA)  81 (81)  188uF 
FDC05-24D05 (W)  18 – 36 (9 – 36) VDC  ± 5 VDC  ± 500mA  289 (289mA)  76 (76)  ± 850uF 
FDC05-24D12 (W)  18 – 36 (9 – 36) VDC  ± 12 VDC  ± 230mA  295 (295mA)  82 (82)  ± 140uF 
FDC05-24D15 (W)  18 – 36 (9 – 36) VDC  ± 15 VDC  ± 190mA  308 (301mA)  81 (83)  ± 47uF 
FDC05-48S33 (W)  36 – 75 (18 – 75) VDC  3.3 VDC  1000mA  100 (100m A )  73 (73)  3700uF 
FDC05-48S05 (W)  36 – 75 (18 – 75) VDC  5 VDC  1000mA  145 (149mA)  76 (74)  1700uF 
FDC05-48S12 (W)  36 – 75 (18 – 75) VDC  12 VDC  470mA  151 (151mA)  82 (82)  290uF 
FDC05-48S15 (W)  36 – 75 (18 – 75) VDC  15 VDC  400mA  160 (163mA)  82 (81)  188uF 
FDC05-48D05 (W)  36 – 75 (18 – 75) VDC  ± 5 VDC  ± 500mA  149 (149mA)  74 (74)  ± 850uF 
FDC05-48D12 (W)  36 – 75 (18 – 75) VDC  ± 12 VDC  ± 230mA  149 (149mA)  81 (81)  ± 140uF 
FDC05-48D15 (W)  36 – 75 (18 – 75) VDC  ± 15 VDC  ± 190mA  154 (154mA)  81 (81)  ± 47uF 
PIN CONNECTION 
PIN 
SINGLE 
DUAL OUTPUT 
1  + INPUT  + INPUT 
2  - INPUT  - INPUT 
3  + OUTPUT  + OUTPUT 
4  NO PIN 
COMMON 
5  - OUTPUT  - OUTPUT 
6  CTRL (Option) CTRL (Option) 
1. All dimensions in Inches (mm) 
2. Pin Pitch tolerance I0.014(0.35) 
2.00(50.8) 
0.40 
(10.2) 
0.40 
(10.2) 
0.50 
(12.7) 
1.00(25.4) 
0.10(2.5) 
0.20(5.1) 
0.80(20.3) 0.60(15.2) 
0.22(5.6) 
0.40 
(10.2) 
DIA. 0.04(1. 0) 
1 2 
34 5 
6 
Bottom 
iew 
Note 
1. The FDC05 (W) series required a minimum 10% loading on the output to maintain specified 
regulation. Operation under no-load condition will not damage these devices, however they may not 
meet all listed specification 
2. Simulated source impedance of 12uH. 12uH inductor on series with + Vin. 
3. The ON/OFF control is option function. There are positive logic and negative logic. The pin voltage is 
referenced to negative input 
To order positive logic ON-OFF control add the suffix-P (Ex: FDC05-24S05-P) 
To order negative logic ON-OFF control add the suffix-N (Ex: FDC05-24S05-N) 
4. BELLCORE TR-NWT-000332. Case I: 50% Stress, Temperature at 40ºC. 
(Ground fixed and controlled environment) 
5. M1 version is more efficient, therefore, it can be operated in a more extensive temperature range than 
standard and M2 version. 
6. Heat sink is optional and P/N: 7G-0020A.
7. Maximum value at nominal input voltage and full load of standard type. 
8. Typical value at nominal input voltage and full load. 
9. Test by minimum Vin and constant resistor load. 
0.4 0.6 0.8 1.00.05 0.2
45 
65 
OUTPUT LOAD (A
EFFICIENCY (%) 
FDC05-48S05 
Efficiency VS Output load 
82 
81 
80 
79 
78 
77 
76 
75 
70 
50 60 70 80 90 
100 -40 -25 0 -10 
25 
50 
75 
100 
0 
AMBIENT T EMPERATURE (ºC ) 
OUTPUT POWER (% ) 
FDC05-48S05 Derating Curve 
Nature convection 
50 60 70 80 90
100-40 -25 0-10
25 
50 
75 
100 
0 
AMBIENT TEMPERATUR E (ºC) 
OUTPUT POWER (%) 
FDC05-48S05-M1 Derating Curve 
Nature convection 
50 60 70 80 90 
100 -40 -25 0 -10 
25 
50 
75 
100 
0 
FDC05-48S05 Derating Curve 
Wi