TITLE
TRANSFORMER, HDSL
SCHOTT
CORPORATION
1000 PARKERS LAKE ROAD
WAYZATA, MN 55391
AGENCY APPROVAL:
N/A
.780 MAX
(19.81)
8
1
PART NUMBER
28888
PAGE
REV
B
1 END
SPECIFICATIONS
TEMP CLASS 105°C
1. INDUCTANCE: (1-2-3-4) @ 10 Khz, 0.1V = 3.5 mhy ±5%
2. TURNS RATIO: (1-2):(3-4):(5-8) = 1:1:1 ±2%
3. LEAKAGE INDUCTANCE: (1-2-3-4) @ 100 Khz,
WITH 5-8 SHORTED < 25 µhy
4. INTERWINDING CAPACITANCE: (5-8) TO (1-2-3-4)
@ 100 Khz < 75 pf GROUND SHIELD
5. DC RESISTANCE: (1-2),(3-4),(5-8) = 1.60 OHM ±10%
6. RETURN LOSS: (1-2-3-4) REF 135 OHM, (5-8) LOADED 30 OHM;
33 Khz-110 Khz > 17 db,
18Khz - 610Khz > 7dB
7. LONGITUDINAL BALANCE: (1-2-3-4) @ 135 OHM,
200 Khz > 55db
8. FREQUENCY RESPONSE: (1-2-3-4) REF 135 OHM,
LOAD 30 OHM, 33 Khz-110Khz , < 0.2 db
9. HARMONIC DISTORION: 135 OHM, 33 Khz, 60mADC,
5 V P-P > 70 db
NOTE: Not necessary to test in production.
10. DIELECTRIC STRENGTH: 3550 VDC
DESIGNED FOR USE WITH BROOKTREE 8958
.780 MAX
(19.81)
5
SCHOTT
28888
YYWW
4
.640 MAX
(16.26)
.150 MIN
(3.81)
.591 ± .010
(15.0)
.197 ±.010
(5.0)
Sq. .024
(0.61)
1
6
5
2
3
8
4
7
GROUND ONLY
ONE END OF SHIELD
inches
(mm)
TOLERANCES
UNLESS OTHERWISE NOTED
2 PLACE
3 PLACE
ANGLE
±
.01
±
.005
±
°
SCHOTT [ SCHOTT CORPORATION ]
