TITLE
TRANSFORMER, HDSL
2 : 1, 0.5 mH
SCHOTT
CORPORATION
1000 PARKERS LAKE ROAD
WAYZATA, MN 55391
AGENCY APPROVAL:
N/A
.780MAX
(19.81)
8
1
PART NUMBER
28887
PAGE
REV
B
1 END
SPECIFICATIONS
1. TEMP CLASS 105°C
2. INDUCTANCE: @ 10 KHz, 0.1 V
1-2-3-4 = 5 mHy ± 5%
3. LEAKAGE INDUCTANCE: @ 100 KHz
1-2-3-4 W/ 5-8 SHORTED = 50 µhY MAX
4. TURNS RATIO:
1-2 : 3-4 : 5-8 = 1 : 1 : 1 ± 2%
5. INTERWINDING CAPACITANCE: @ 100 KHz
5-8 TO 1,2,3,4 = 75 pF MAX
GROUND PIN 6
6. DC RESISTANCE: 1-2, 3-4 = 1.6 OHM ± 10%
5-8 = 2.1 OHM ± 10%
7. RETURN LOSS: 1-2-3-4, REF 135 OHM, 5-8
LOADED 30 OHM: 20 KHz - 80 KHz = -17 dB MAX
20 dB/DECADE BEYOND
8. LONGITUDINAL BALANCE: 1-2-3-4 @ 135 OHM
200 KHz = 55 dB MIN
9. FREQUENCY RESPONSE: 1-2-3-4 REF = 135 OHM
LOAD 30 OHMS, 20-80 KHz = 0.2 dB MAX
.780MAX
(19.81)
5
SCHOTT
28887
YYWW
4
.640MAX
(16.26)
.150 MIN
(3.81)
.591 ± .010
(15.0)
.197 ±.010
(5.0)
Sq. .024
(0.61)
1
6
5
LINE
10. HARMONIC DISTORTION: 135 OHM, 20 KHz,
60 mAdc, 5 V p-p = 70 dB MIN
NOTE: NOT NECESSARY TO TEST IN PRODUCTION.
11. DIELECTRIC STRENGTH: 3550 Vdc
2
3
CHIP
8
4
7
GROUND ONLY
ONE END OF SHIELD
This transformer designed for use with Brooktree 8958
inches
(mm)
TOLERANCES
UNLESS OTHERWISE NOTED
2 PLACE
3 PLACE
ANGLE
±
.01
±
.005
±
°
SCHOTT [ SCHOTT CORPORATION ]
