IRF
Vishay Dale
www.vishay.com
Inductors, Epoxy Conformal Coated,
Uniform Roll Coated, Axial Leaded
FEATURES
• Flame-retardant coating
• Color band identification
ELECTRICAL SPECIFICATIONS
Inductance Tolerance: 5 ꢀ, 10 ꢀ, 20 ꢀ
• Uniform coating is excellent for automatic
insertion
Other tolerances available on request
• Available in bulk, ammo and reel pack per EIA RS/296
Insulation Resistance: 1000 M minimum per
MIL-STD-202, method 302, test condition B
• Superior electrical specifications high Q and self resonant
frequency, low DC resistance, high rated DC current
Operating Temperature: - 55 °C to + 105 °C
• Compliant to RoHS Directive 2002/95/EC
TEST EQUIPMENT (1)
• H/P 4342A Q-meter
MATERIAL SPECIFICATIONS
Coating: Epoxy-uniform roll coated
Lead: Tinned copper
Core: Ferrite
• Measurements corporation megacycle meter, model 59
• Whearstone bridge
Note
MECHANICAL SPECIFICATIONS
Terminal Strenght: 5 pounds pull per MIL-STD-202,
(1)
Test procedures per MIL-PRF-15305
method 211, test condition A
Weight: IRF-1 = 0.3 g maximum
ENVIRONMENTAL PERFORMANCE
IRF-3 = 0.6 g maximum
TEST
CONDITIONS
SPECIFICATIONS
DIMENSIONS in inches [millimeters]
MIL-STD-202,
method 111
A
1.25 [31.75] Min.
1.63 [41.28] Max.
Flammability
Overload
-
-
Max.
MIL-PRF-15305
D
C
Max.
Resistance to
Soldering Heat
MIL-STD-202,
method 210
B Max.
D
A
MODEL A (MAX.) B (MAX.) C (MAX.)
Resistance to
Solvents
MIL-STD-202,
method 215
0.260
[6.60]
0.120
[3.05]
0.330
[8.38]
0.0200 0.0015
[0.508 0.038]
-
IRF-1
IRF-3
0.385
[9.78]
0.170
[4.32]
0.410
[10.41]
0.025 0.002
[0.635 0.051]
STANDARD ELECTRICAL SPECIFICATIONS
IND.
(μH)
TEST FREQUENCY L AND Q
(MHz)
SRF MIN.
(MHz) (1)
DCR MAX.
RATED DC CURRENT
(mA) (2)
TOL.
(%)
Q
MIN.
MODEL
()
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
IRF-1
0.10
0.12
0.15
0.18
0.22
0.27
0.33
0.39
0.47
0.56
0.68
0.82
1.0
20
20
20
20
20
20
20
20
20
20
20
20
10
10
10
40
40
40
40
40
40
40
40
40
40
40
40
50
50
50
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
7.9
400.0
400.0
400.0
400.0
380.0
360.0
350.0
320.0
300.0
280.0
250.0
200.0
180.0
165.0
150.0
0.06
0.06
0.07
0.075
0.075
0.08
0.08
0.09
0.10
0.11
0.12
0.12
0.15
0.18
0.20
1350
1270
1200
1155
1150
1110
1110
1000
1000
950
900
900
815
740
1.2
1.5
7.9
700
Notes
(1)
Measured with full length lead
Rated DC current based on maximum temperature rise of 15 °C at + 90 °C ambient
(2)
Revision: 17-Oct-11
Document Number: 34055
1
For technical questions, contact: magnetics@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000