JFC20 Series
Single & Dual Outputs
2:1 Input Voltage Range
Rev. A
20 Watt DC/DC Power Converters
SPECIFICATIONS: JFC20 Series
All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted. We reserve the right to change specifications based on technological advances.
SPECIFICATION
INPUT SPECIFICATIONS
TEST CONDITIONS
Min
Nom
Max
Unit
VDC
VDC
VDC
12VDC nominal input models
9
18
36
12
24
48
18
36
75
25
50
100
9
Input Voltage Range
Input Surge Voltage (1 sec max)
Start-Up Voltage
24VDC nominal input models
48VDC nominal input models
12VDC nominal input models
24VDC nominal input models
48VDC nominal input models
12VDC nominal input models
24VDC nominal input models
48VDC nominal input models
12VDC nominal input models
24VDC nominal input models
48VDC nominal input models
Nominal Vin and full load
18
36
8
Shutdown Voltage
VDC
16
33
30
Input Reflected Ripple Current
Input Filter
mAp-p
Pi type
OUTPUT SPECIFICATIONS
Output Voltage
See Table
Single Output Models
Dual Output Models
Single Output Models
Dual Output Models
-0.2
-0.5
-0.2
-1.0
-5
+0.2
+0.5
+0.2
+1.0
+5
+10
+1
20
Line Regulation
Load Regulation
Low line to high line at full load
%
%
No load to full load
Cross Regulation (Dual Output Models)
Voltage Adjustability (See Note 6)
Voltage Accuracy
Asymmetrical load 25% to 100% full load
%
%
%
W
-10
-1
Output Power
Output Current
Ripple & Noise (20MHz Bandwidth)
Transient Response Recovery Time
See Table
See Table
Measured with a 1µF M/C and 10µF T/C
25% load step change
250
µs
Power Up
Remote ON/OFF
30
30
Start-Up Time
Nominal Vin and constant resistive load
ms
Minimum Load
0
%
Temperature Coefficient
PROTECTION
-0.02
+0.02
%/°C
3.3V output models
5V output models
12V output models
15V output models
% of full load at nominal input
3.7
5.6
13.5
16.8
5.4
7.0
19.6
20.5
Over Voltage Protection
VDC
%
Over Load Protection
Short Circuit Protection
GENERAL SPECIFICATIONS
Efficiency
150
hiccup, automatic recovery
Nominal Vin and full load
Full load to minimum load
Input to Output
Input to Case
Output to Case
See Table
330
Switching Frequency
KHz
1600
1000
1000
10
Isolation Voltage
VDC
Isolation Resistance
GΩ
Isolation Capacitance
1500
pF
REMOTE ON/OFF (See Note 7)
DC/DC ON
Open or 3V < Vr < 15V
Short or 0V < Vr < 1.2V
Short or 0V < Vr < 1.2V
Open or 3V < Vr < 15V
+1.0
Positive Logic (standard)
DC/DC OFF
DC/DC ON
DC/DC OFF
Negative Logic (option)
Input Current of Remote Control Pin
Remote Off State Input Current
Nominal Vin
Nominal Vin
-0.5
mA
mA
2.0
ENVIRONMENTAL SPECIFICATIONS
Without derating
With derating
-40
+55
+55
+101
Operating Ambient Temperature
°C
Maximum Case Temperature
Storage Temperature
+105
+125
°C
°C
-55
5
Natural convection
Natural convection with heatsink
18.2
15.8
Thermal Impedance (See Note 8)
°C/Watt
% RH
Relative Humidity (non-condensing)
Thermal Shock
Vibration
95
MIL-STD-810F
MIL-STD-810F
1,766,000 hours
553,000 hours
BELLCORE TR-NWT-000332
MIL-HDBK-217F
MTBF (See Note 1)
PHYSICAL SPECIFICATIONS
Weight
Case Material
0.53oz (15g)
Nickel-coated copper
FR4 PCB
Base Material
Potting Material
Silicon (UL94-V0)
Dimensions (L x W x H)
SAFETY & EMC CHARACTERISTICS
Safety Approvals
1.0 x 1.0 x 0.39 inches (25.4 x 25.4 x 9.9 mm)
IEC60950-1, UL60950-1, EN60950-1
Class B
EMI (See Note 9)
EN55022
Air
Contact
±8KV
ESD
EN61000-4-2
Perf. Criteria A
±6KV
10 V/m
±2KV
±2KV
10 Vrms
Radiated Immunity
Fast Transient (See Note 10)
Surge (See Note 10)
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
Perf. Criteria A
Perf. Criteria A
Perf. Criteria A
Perf. Criteria A
Conducted Immunity
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
09/24/2010
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