TITLE
OCTAL T1/E1 TRANSFORMER
AGENCY APPROVAL: NA
PN
37538
SH
REV
F
OF
12
2
DIMENSIONAL OUTLINE
SPECIFICATIONS
EXTENDED TEMP RANGE (-40C TO +85C)
1. TURNS RATIO:
TRANSMIT (IN+ TO IN-) : (OUT+ TO OUT-)
RECEIVE (IN+ TO IN-) : (OUT+ TO OUT-)
2. INDUCTANCE:
TRANSMIT (IN+ TO IN-)
RECEIVE (IN+ TO IN-)
TRANSMIT (IN+ TO IN-)
RECEIVE (IN+ TO IN-)
3. LEAKAGE INDUCTANCE:
TRANSMIT IN+ TO IN-
(WITH OUT+ AND OUT- SHORT)
RECEIVE IN+ TO IN-
(WITH OUT+ AND OUT- SHORT)
4. INTERWINDING CAPACITIANCE:
(IN+, IN-) TO (OUT+, OUT-)
5. D.C. RESISTANCE:
(IN+ TO IN-)
(OUT+ TO OUT-)
6. DIELECTRICAL VOLTAGE WITHSTAND:
(IN+, IN-) TO (OUT+, OUT-)
.495
.480
1.130
1.115
1 : 2 CT ±2%
1 : 2 CT ±2%
PIN 1
INDICATOR
.
SCHOTT
37538
DATE CODE &
COUNTRY OF ORIGIN
.640±.010
.018±.002
.950±.010
1.2 mH MIN. @ 0.01V. 100KHz . 25C
1.2 mH MIN. @ 0.01V. 100KHz . 25C
600 uH MIN. @ 0.01V. 100KHz . -40C TO +85C
600 uH MIN. @ 0.01V. 100KHz . -40C TO +85C
.010±.002
.220±.010
0.5 uH MAX. @ 1MHz
0.5 uH MAX. @ 1MHz
.090
REF. PWB LAYOUT
.050
.015±.005
.660
35pf MAX @ 1MHz
.090
.030
.5 ohms Max.
1.0 ohms Max.
OUT +
RX
OUT -
IN +
TX
IN -
5
1
2
3
COPLANARITY OF PINS IS LESS THEN OR EQUAL TO 0.004 INCHES
SCHEMATIC
2 CT : 1
1500VAC for 60 seconds
(1800 VAC for 1 second production test)
40
IN +
OUT +
RX
11
12
13
2 CT : 1
30
IN +
7. RETURN LOSS:
(WINDING WITH TURNS RATIO 2 IS 100 OHM REF.)
(25 OHMS connected to the low turns side of 2 ratio transformer)
51KHz TO 102KHz
12dB MIN
102KHz TO 2.048MHz
18dB MIN
2.048MHz TO 3.072 MHz
14dB MIN
8. CROSS TALK:
9. COMMON MODE REJECTION:
65dB OR BETTER
39
IN -
OUT +
OUT -
IN +
TX
29
IN -
OUT +
1 : 2 CT
4
38
37
36
14
1 : 2 CT
28
27
15
26
OUT -
IN +
IN -
OUT +
RX
OUT -
IN +
2 CT : 1
OUT +
6
7
8
34
35
16
17
18
2 CT : 1
25
50dB OR BETTER @ 1 MHz
RX
OUT -
IN +
TX
IN -
IN -
OUT +
OUT -
IN +
TX
24
IN -
OUT +
1 : 2 CT
9
33
32
10
31
1 : 2 CT
19
23
22
20
.XX = ± .01
.XX = ± 0.20
OUT -
IN -
21
.XXX = ±.005
OUT -
ANGLES ± 1°
1000 Parkers Lake Road, Wayzata, MN 55391, (952) 475-1173, www.schottcorp.com
TOLERANCES UNLESS
OTHERWISE SPECIFIED
INCHES / DECIMAL
MILLIMETERS (mm)
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