Multi- Aperture cores (2843009902)
Part Number: 2843009902
43 MULTI- APERTURE CORE
Explanation of Part Numbers:
– Digits 1 & 2 = Product Class
– Digits 3 & 4 = Material Grade
– Last digit 2 = Burnished
Multi- aperture cores are used in suppression applications and in balun (balance- unbalance) and other broadband
transformers. They are also employed in airbag designs to prevent accidental activation.
All multi- aperture cores are supplied burnished.
Our “Multi- Aperture Core Kit” (part number 0199000036) is available for prototype evaluation.
For any multi- aperture requirement not listed here, feel free to contact our customer service group for availability and
pricing.
Weight: 48 (g)
Dim mm
A
28.7
B
28.7
C
14.25
E
14
H
6.35
mm tol
±0.60
±0.70
±0.30
±0.30
±0.15
nominal inch
1.13
1.13
0.56
0.55
0.25
inch misc.
_
_
_
_
_
Chart Legend
+ Test frequency
Typical Impedance (Ω)
25 MHz
380
+
100 MHz
500
Multi- aperture cores in 73 and 43 materials are controlled for impedance only. The 61 NiZn material is controlled for both
impedance and A
L
value. The high frequency 67 material is controlled for A
L
value. Minimum impedance values are specified for
the + marked frequencies. The minimum impedance is typically the listed impedance less 20%.
Multi- aperture cores in 73 and 43 material are measured for impedance on the 4193A Vector Impedance Analyzer. The 61 and
67 multi- aperture cores are tested on the 4291A Impedance Analyzer. All impedance measurements are performed with a single
turn to both holes, using the shortest practical wire length.
The 61 and 67 material multi- hole beads are tested for A
L
value. The test frequency is 10 kHz at < 10 gauss. The test winding is
five turns wound through both holes.
Fair- Rite Products Corp.
•
One Commercial Row, Wallkill, New York 12589-0288
888-324-7748 • 845-895-2055 • Fax: 845-895-2629 • ferrites@fair- rite.com • www.fair- rite.com
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