Engineering Bulletin Mar 07
SMQ Series
Part Numbering System for SMQ Series When ordering, always specify complete 18-field global part number.
18 Fields
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18
E S M Q 4 5 1 V S N 3 9 1 M R 4 0 S
9
8
Supplement Code. Field 18.
All construction options listed have Sn100% terminal plating.
S = PET sleeve without end disk.
W= PET sleeve with end disk.
Case Size. Fields 15, 16 and 17.
The single letter diameter code is inserted in field 15.
P = Ø22mm
Q = Ø25.4mm
R = Ø30mm
A = Ø35mm
The double digit length code is inserted in fields 16 and 17.
25 = 25mm
30 = 30mm
35 = 35mm
40 = 40mm
45 = 45mm
50 = 50mm
7
6
Capacitance Tolerance. Field 14.
ꢄ
M= 20%
Capacitance. Fields 11, 12 and 13.
Expressed in Microfarads. The first two digits are significant
figures inserted in fields 11 and 12, and the third digit inserted
in field 13 indicates the number of zeros for capacitance of
10ꢀF or more. R indicates the decimal point for capacitance
less than10ꢀF (e.g. 3R9= 3.9ꢀF; 390 = 39ꢀF; 391= 390ꢀF;
392= 3,900ꢀF; 393= 39,000ꢀF).
5
4
3
Dummy Terminals. Field 10.
N = No dummy terminals.
Terminal Type. Fields 8 and 9.
VS = Snap-in pins.
DC Rated Voltage. Fields 5, 6 and 7.
Expressed in Volts. The first two digits are significant figures
inserted in fields 5 and 6, and the third digit inserted in field 7
indicates the number of zeros for rated voltage of 10VDC or
more. R indicates the decimal point for rated voltage less than
10VDC (e.g. 4R5 = 4.5VDC; 450 = 45VDC; 451= 400VDC).
Rule Exception: Coding for rated voltage 315VDC = 3B1.
2
1
Series Name. Fields 2, 3 and 4.
Enter the 3-letter/digit series name in fields 2, 3 and 4. If the
series name is only 2 letters/digits, place a dash in field 4.
For a series name with more than 3 letters/digits, refer to the
individual series for the appropriate 3-field series name.
Capacitor Type. Field 1.
Aluminum Electrolytic Capacitor (Polar).
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
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CHEMI-CON [ UNITED CHEMI-CON, INC. ]
