BRITISH STANDARDS INSTITUTION
389 CHISWICK HIGH ROAD, LONDON, W4 4AL
Electronic components of Assessed Quality
Specification available from:
AS SHOWN IN PD 9002 AND
PASCALL ELECTRONIC SYSTEMS LTD.
ELECTRONIC COMPONENTS OF
ASSESSED QUALITY
DETAIL SPECIFICATION IN ACCORDANCE WITH
BS 9720: 1983
BS 9733:1978
BS 9733 F0001
ISSUE 4
DECEMBER 2001
page 1 of 4 pages
MANUFACTURERS
TYPE NUMBER
P1200 SERIES
SEE PD 9002
for ordering information
see clause 4
PASCALL ELECTRONICS LIMITED
RYDE, ISLE OF WIGHT UK PO33 1QT
CAPABILITY APPROVAL
CERTIFICATE No CA/087
PULSE TRANSFORMER
Outline & Dimensions (mm)
2.54
TYP.
3rd Angle projection
15.9
15.5
o8
o7
o6
o5
o4
3o
2o
1o
Ø0.5
10
MIN
7.6
MAX
pin 1 designator
15.9
15.5
COUPLING / ISOLATION
TRANSFORMER
FOR USE IN DEF.-STAN 00 -18
AND MIL - STD - 1553 B
APPLICATIONS (see clause 6)
16.5
3
2
1
8
7
6
5
4
PASCALL
P-12xx
2.54
TYP
16.5
30 x 1.25 TYP IN 8 PLACES
12.7
DIMENSIONS IN mm TOLERANCES
±
0.3
UNLESS OTHERWISE STATED
5 MAX
GLASS FILLED MOULDED
HOUSING, EPOXY RESIN
ENCAPSULATED
BASIC & ADDITIONAL
ASSESSMENT
SUB GROUPS A0, A1, B2
Note:
number of pins may vary
see table 1
Marking information see clause 2
TABLE 1
Pin configurations (see note 1)
Code
Letter
A / SM
B / SM
C / SM
D
E
Note 1:
The transformer pin and winding configuration
is specified by a suffix comprising the code
letter from table 1 together with three code
numbers from columns 1, 3 and 5 of table 2
appropriate to the winding configuration.
e,g. BS 9733 F0001-A331
TABLE 2
Winding configurations (see note 1 & figure 1)
Code
Number
0
1
2
3
4
5
6
7
8
Ratio
between pins
1,3:4,8
N.C.
1.1
1:2:1
1.41:1
0.425:1
0.40:1
0.56:1
0.47:1
1.79:1
Code
Number
0
1
2
3
4
5
6
Ratio
between pins
1,3:5,7
N.C.
1.41:1
1.66:1
2:1
0.87:1
0.41:1
0.6:1
Code
Number
0
1
Centre
taps at
pins 2,6
N.C.
Yes
Total No.
of pins
8
4
6
4
4
Pins Omitted /
Not Connected
None Omitted
2,4,6,8
5,7
None Omitted
None Omitted
A-C = Leaded, SM = Surface Mount
PAGE 1
Appendix A - Test Circuits
A1.
Open circuit primary impedance
1
ISSUE 4 - DECEMBER 2001
BS 9733 F0001
V
1
Z
p
=
V
1
x 100
Ω
V
2
f = 75 kHz, V = 8 V
2
peak-to-peak
100
Ω
V
2
3
A2.
Common mode rejection ratio. (CMR)
5
1
V
in
V
cm
CMR = 20log
10
V
in
V
cm
f = 1 MHz
V
in
= 4 V peak-to-peak
7
3
A3.
Droop, overshoot and ringing
1
1
µF
360
Ω
5
V
out
f = 250 kHz
V
in
= 27 V peak-to-peak
3
7
Overshoot and ringing
±
1 V max. peak.
droop =
E
d
x 100 %
E
p
PAGE 2
1. Ratings and characteristics
PARAMETER
Open circuit primary impedance
Droop
Common mode rejection ratio
Overshoot and ringing
Interwinding resitance
Turns ratio tolerance
Peak working voltage
Frequency range (f)
Operating Temperature (T
amb
)
CLIMATIC CATEGORY:
ENVIRONMENTAL CATEGORY:
ISSUE 4 - DECEMBER 2001
BS 9733 F0001
Electrical characteristics - over operating conditions unless otherwise stated
TEST CONDITIONS
MIN
TYP
8
MAX
UNIT
k
Ω
f = 75 kHz, T
amb
= 25 ºC
3
10
45
50
±0.5
Test voltage = 500 V
50
15
%
dB
±1.0
V
M
Ω
±3
50
75
-55
55 / 120 / 56
Bump; 4000 bumps total at 390
m/s
2
3 planes
Vibration; 10-2000 Hz at 98
m/s
2
3 planes
%
V
kHz
ºC
1000
+125
1
4
5
CT
CT
Figure 1:
Electrical schematic
2
6
7
3
8
2. Marking information
a]
b]
c]
d]
Each transformer will bear the following markings:
Specification number and suffix e.g. BS 9733 F0001 -A331 (Leaded), BS 9734 / PEI P1292 (SM)
Manufacturers factory code
Date code
Pin 1 designator - see page 1
3. Related documents
BS 6001
BS 9000
BS 9720:1983
BS 9733:1978
PD 9002
Sampling procedures and tables for inspection by attributes
General requirements for electronic components of assesses quality
Custom built transformers and inductors of assessed quality: Generic data and methods of test
Sectional specification for pulse transformers of assessed quality: BASIC assessment level
BS 9000 Component selection guide
PAGE 3
4. Ordering information
a]
b]
c]
Quantity
ISSUE 4 - DECEMBER 2001
BS 9733 F0001
Orders for components to this specification shall include the following minimum information:
Manufacturers type number
BS specification number and suffix - see page 1, note 1
5. Delayed delivery
Components held for a period exceeding one year after acceptance testing shall be reexamined
prior to dispatch and shall satisfy the group A inspection requirements of clause 7
6. Additional information
Storage Temperature: Manufacturer's recommended temperature -55 ºC to +150 ºC
Application:
These transformers are designed for use with the Def Stan 00-18 (Part 2) / 1 and
MIL-STD 1553B, Avionic Data Transmission Systems. The inspection required by this
detail specification does not invoke either of these standards
7. Inspection requirements
Unless otherwise stated tests shall be made at 25 ºC. Samples submitted to tests marked (D) shall
not be accepted for release under BS 9000.
REQUIREMENT
INSPECTION
BS 9720 Reference Number
and Conditions of Test
SYMBOL
LIMITS
MIN
MAX
UNIT
GROUP A
Subgroup A0
Visual inspection
Continuity
Impedance
Phase Test
100 % Inspection
1.2.2.
1.2.4.1.2.
See Appendix A1
1.2.4.26. Procedure 1
Inspection level S4, AQL 1 %
1.2.4.4. 140 V for 10s
1.2.4.2.1. 500 V dc
See Appendix A2
1.2.4.20
See Appendix A3
See Appendix A3
overshoot
droop
As in 1.2.4.4.
200
45
±1
15
M
Ω
dB
V
%
Zp
6000
Ω
Subgroup A1
Voltage proof
Insulation resistance
(standard atmosphere)
Common mode
rejection ratios
Pulse
Characteristics
Subgroup A2
Voltage transformation
ratio
Inspection level S3, AQL 1.5 %
1.2.4.16 f = 10 kHz at 8 V peak-to-peak
Procedure 1
±3
%
GROUP B
Subgroup B1
Dimension
Inspection level S4, AQL 1 %
1.2.3.
Inspection level S3, AQL 4 %
T = -55 ºC
T = +125 ºC
Appendix A1
Appendix A1
3000
5000
Ω
Ω
As Page 1
Subgroup B2
Impedance (low temp)
Impedance (high temp)
Pascall Electronics Ltd, Westridge Business Park,
Cothey Way, Ryde, Isle of Wight, PO33 1QT UK
PAGE 4
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