ELECTRICAL SPECIFICATIONS
Inductance Tolerance: ± 5 %, ± 10 %, ± 20 %
Other tolerances available on request
Insulation Resistance: 1000 Megohm minimum per
MIL-STD-202, Method 302, Test Condition B
Operating Temperature: - 55 °C to + 105 °C
MATERIAL SPECIFICATIONS
Coating: Epoxy-uniform roll coated
Lead: Tinned copper
Core: Ferrite
MECHANICAL SPECIFICATIONS
Terminal Strenght: 5 pounds pull per MIL-STD-202,
Method 211, Test Condition A
Weight: IRF-1 = 0.3 gram maximum
TEST EQUIPMENT*
• H/P 4342A Q-Meter
• Measurements Corporation Megacycle Meter, Model 59
• Whearstone bridge
* Test procedures per MIL-PRF-15305
* Measured with full length lead. ** Rated DC Current based on maximum temperature rise of 15 °C at + 90 °C ambient.
Document Number: 34055
Revision: 07-Aug-07
STANDARD ELECTRICAL SPECIFICATIONS
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
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
IRF-3 = 0.6 gram maximum
(µH)
IND.
0.10
0.12
0.15
0.18
0.22
0.27
0.33
0.39
0.47
0.56
0.68
0.82
10.0
12.0
15.0
18.0
22.0
27.0
1.2
1.5
1.8
2.2
2.7
1.0
3.3
3.9
4.7
5.6
6.8
8.2
± 20 %
± 20 %
± 20 %
± 20 %
± 20 %
± 20 %
± 20 %
± 20 %
± 20 %
± 20 %
± 20 %
± 20 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
± 10 %
TOL.
For technical questions contact magnetics@vishay.com
MIN.
40
40
40
40
40
40
40
40
40
40
40
40
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
Q
Epoxy Conformal Coated
Uniform Roll Coated
Inductors
TEST FREQ.
(MHz)
L & Q
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
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
7.9
2.5
2.5
2.5
2.5
2.5
FEATURES
• Flame-retardant coating and color band identification
• Uniform coating is excellent for automatic insertion
• Available in bulk, ammo and reel pack per EIA
• Superior electrical specifications high Q and self resonant
DIMENSIONS in inches [millimeters]
MODEL
ENVIRONMENTAL PERFORMANCE
TEST
Flammability
Overload
Resistance to
Soldering Heat
Resistance to
Solvents
RS/296
frequency, low DC resistance, high rated DC current
IRF-1
IRF-3
SELF-RESONANT*
D
FREQ MIN.
(MHz)
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
125.0
115.0
100.0
90.0
80.0
75.0
65.0
60.0
55.0
50.0
40.0
35.0
30.0
25.0
20.0
A (Max.)
0.260
[6.60]
0.385
[9.78]
CONDITIONS
-
-
Test Condition A
-
B (Max.)
0.120
[3.05]
0.165
[4.19]
Max.
Max.
MAXIMUM
A
C
(Ohms)
0.075
0.075
DCR
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.12
0.12
0.15
0.18
0.20
0.23
0.25
0.28
0.30
0.32
0.35
0.40
0.45
0.55
0.72
0.80
0.88
1.35
1.0
1.2
C (Max.)
[10.41]
0.330
[8.38]
0.410
SPECIFICATIONS
MIL-STD-202, Method 111
MIL-PRF-15305
MIL-STD-202, Method 210
MIL-STD-202, Method 215
1.63 [41.28] Max.
1.25 [31.75] Min.
Vishay Dale
RATED DC**
0.0200 ± 0.0015
[0.508 ± 0.038]
[0.635 ± 0.051]
CURRENT
www.vishay.com
0.025 ± 0.002
B Max.
(mA)
1350
1270
1200
1155
1150
1110
1110
1000
1000
950
900
900
815
740
700
655
630
595
575
555
530
500
470
425
370
350
335
315
285
270
D
RoHS
COMPLIANT
IRF
31