Hammond Mfg. Co. Ltd., Electronics Division
www.hammondmfg.com
109J
MINIATURE EPOXY POTTED AUDIO TRANSFORMER
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Audio input, line matching and output transformers
Epoxy potted in an attractive molded case, Pin type, P.C. board
mount, (min. 0.187” length)
Rugged epoxy potted construction produces a completely
sealed unit withstanding severe environmental conditions.
In some models where no center tap is present (on the
secondary), pin 5 is omitted.
Secondary may be used as primary and primary as secondary.
Will withstand soldering for 10 sec. @ 260 degrees C. ambient
temp. 85 degrees C max.
6
5
4
Power level: 2.0W @ 300 Hz. to 50 Khz.
-Freq. range @ +0 dbm is 300 Hz. to 50 Khz. +/- 1.5db
-Freq. range @ +10 dbm is 300 Hz. to 50 Khz. +/- 1.5db
-Freq. range @ +27 dbm is 300 Hz. to 50 Khz. +/- 1.5db
-Freq. measurements with no D.C. saturation.
MADE IN CANADA
1
2
3
ELECTRICAL SPECIFICATIONS
Characteristic
Input Impedance
Output Impedance
Output Power
DCR
Primary 1-3
Secondary 4-6
Inductance
Primary
Secondary
Leakage Inductance
Impedance
Primary
Secondary
Frequency Response
Unbalanced DC
Turns ratio
Dielectric Strength
Temperature Range
Typical
1000ΩCT
600
ΩCT
2 Watts
64
Ω
(32Ω/32Ω)
51.5
Ω
(25.75Ω/25.75Ω)
@ 1.0 kHz, 1.0 V OC
1.622 H
996.8 mH
4.86 mH
@ 1.0 kHz, 1.0 V OC
11.564 KΩ
7.042 KΩ
±1.5db
from 300Hz to 50KHz
SCHEMATIC DIAGRAM
PRIMARY
1
PCB LAYOUT
SECONDARY
6
6mA Max.
1.29:1
100 Vrms
-40 To 105°C**
1000
Ω
CT 2
5 600
Ω
CT
N.T.S.
3
4
PRIMARY
R
S
/
SECONDARY
2
TYPICAL TEST CIRCUIT
R
L
OUT
Measurement instruments
Hp4192a impedance analyzer
Hp3456a DVM
Keithley 2002 DVM
D scope series iii audio analyzer
R
S
/
2
**The epoxy that is used to cast these parts has a workable temperature range of –40°C to +105°C
Under a normal rate of change, this does not include thermal shock.
Variations in the transformer materials and environmental conditions may reduce the workable temperature range.
This drawing and the information in it is the property of Hammond Manufacturing. It may not be reproduced, transmitted or used in any manner whatsoever without the written permission of
Hammond Manufacturing. Data subject to change without notice.
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