DATA SHEET
Product Name Power Metal Fixed Resistors
Part Name PMR Series
Uniroyal Electronics Global Co., Ltd.
88#, Longteng Road, Economic & Technical Development Zone, Kunshan, Jiangsu, China
Tel +86 512 5763 1411 / 22 /33
Email marketing@uni-royal.cn
Manufacture Plant
Uniroyal Electronics Industry Co., Ltd.
Aeon Technology Corporation
Royal Electronic Factory (Thailand) Co., Ltd.
Royal Technology (Thailand) Co., Ltd.
Aug.07,2020 V.3 www. uni-royal.cn
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Power Metal Fixed Resistors
1. Scope
1.1 This specification for approve relates Power Metal Fixed Resistors manufactured by UNI-ROYAL
1.2 High power in small body size
1.3 Excellent flame Retardant coating
1.4 High stability even in bad environment
1.5 Match the safety requirement
2. Part No. Sy stem
The standard Part No. includes 14 digits with the following explanation:
2.1 Coated type, the 1
st
to 3
rd
digits are to indicate the product type and 4
th
digit is the special feature.
Example: PMR0= Power Metal Fixed Resistors
2.2 5
th
~6
th
digits:
2.2.1 This is to indicate the wattage or power rating. To dieting the size and the numbers,
The following codes are used; and please refer to the following chart for detail:
W=Normal Size “1”~“G”to denotes“1”~“16”as Hexadecimal:
1W~16W (≧1W )
Wattage 1 2 3 5 7 8 9 10 15
Normal Size 1W 2W 3W 5W 7W 8W 9W AW FW
Small Size 1S 2S 3S 5S 7S 8S 9S AS FS
2.2.2 For power of 1 watt to 16 watt, the 5
th
digit will be a number or a letter code and the 6
th
digit will be the letters of W, S or U.
Example: 1W=1W; 3W=3W
2.3 The 7
th
digit is to denote the Resistance Tolerance. The following letter code is to be used for indicating the standard Resistance Tolerance.
F=±1% G=±2% J=±5% K= ±10%
2.4 The 8
th
to 11
th
digits is to denote the Resistance Value.
2.4.1 For the standard resistance values of E-24 series, the 8th digit is “0”,the 9
th
& 10
th
digits are to denote the significant figures of the resistance
and the 11
th
digit is the number of zeros following;
For the standard resistance values of E-96 series, the 8
th
digit to the 10
th
digits is to denote the significant figures of the resistance and the
11
th
digit is the 11
th
digit is the zeros following.
2.4.2 The following number s and the letter codes are to be used to indicate the number of zeros in the 11
th
digit:
0=10
0
1=10
1
2=10
2
3=10
3
4=10
4
5=10
5
6=10
6
J=10
-1
K=10
-2
L=10
-3
M=10
-4
2.4.3 The 12
th
, 13
th
& 14
th
digits.
The 12
th
digit is to denote the Packaging Type with the following codes:
A=Tape/Box (Ammo pack) B=Bulk/Box
T=Tape/Reel P=Tape/Box of PT-26 products
2.4.4 The 13
th
digit is normally to indicate the Packing Quantity of Tape/Box packaging types. The following number is to be used for some
packing quantities:
1=1000pcs 2=2000pcs 3=3000pcs 4=4000pcs 5=5000pcs
2.4.5 For some items, the 14
th
digit alone can use to denote special features of additional information with the following codes:
0=NIL P=Panasert type 1=Avisert type 1 2=Avisert type 2
3=Avisert type 3 8=PT-58mm 9=PT-64mm 7=Lead wire(H)38mm
A=PT-83mm C=PT-73mm D=PT-71mm