TITLE
TRANSFORMER,
HDSL, 3 mH
SCHOTT
CORPORATION
PART NUMBER
31438
PAGE
1000 PARKERS LAKE ROAD
WAYZATA, MN 55391
REV
B
1 END
SPECIFICATIONS
105° C
TEMPERATURE CLASS
1. INDUCTANCE: @ 0.1Vrms, 10 KHz
(1-4-2-5) = 2.82 to 3.18 mH
2. LEAKAGE INDUCTANCE: @ 0.1Vrms, 100 KHz
(1-4-2-5) with (9-7) shorted = 11 µH MAX
3. IWC: @ 0.1Vrms, 100 KHz,
(1-4-2-5) to (9-7) = 110 pF MAX
4. TURNS RATO: (1-4) : (2-5) : (9-7) = 1 : 1 : 1 ± 2%
5. DC RESISTANCE: OHMS
(1-4-2-5) = 2.5 MAX
(9-7) = 1.0 MAX
6. DIELECTRIC STRENGTH: 1500 Vac
(1-4-2-5) to (9-7)
ALL WINDINGS TO CORE
7. LONGITUDINAL BALANCE: Rs = 135 OHM, Rl = 32 OHM
40-200 kHz = 53 dB MIN
8. RETURN LOSS: Rs = 135 OHM, Rl = 32 OHM,
40 - 200 kHz = 20 dB MIN
9. HARMONIC DISTORTION: 14 dBm, 40 kHz = -70 dB MAX
Rs = 135 OHM, Rl = 32 OHM
Designed and tested for use with
Brooktree BT8921 & 8970 @ 784 Kbps
5
6
10
6
10
10
PINS .024 SQ.
(0.06)
REF: PWB PATTERN
.560 MAX
(14.22)
1
inches
(mm)
.560 MAX
(14.22)
6
SCHOTT
31438
YYWW
.100
(2.54)
.400 ±.010
(10.16)
NOTCH
5
.500 MAX
(12.70)
.120
± .010
.400 ±.010
(10.16)
.100 ±.010
(2.54)
.024 Sq.
(0.61)
9
1
CHIP
7
LINE
4
2
SCHOTT
31438
YYWW
SCHOTT
31438
YYYYDDDS
5
1
1
5
TOLERANCES
UNLESSOTHERWISENOTED
2 PLACE
3 PLACE
ANGLE
HAND LINE LABEL
AUTOMATION LINE LABEL
+
-
.02
+
-
.005
+
-
°
SCHOTT [ SCHOTT CORPORATION ]
