DATA SHEET
Product Name Radial Type Cement Fixed Resistors
Part Name PRM 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.
Feb.26,2019 V.2 www. uni-royal.cn
Page 2/5
Radial Type Cement Fixed Resistors
1. Scope
This datasheet is the characteristics of Radial Type Cement Fixed Resistors manufactured by UNI-ROYAL.
2. Part No. System
The standard Part No. includes 14 digits with the following explanation:
2.1 For Cement Fixed Resistors, these 4
digits are to indicate the product type but if the product type has only 3digits, the 4
th
digit will be “0”
Example: PRM0=PRM- type
2.2 5
th
~6
th
digits:
2.2.1 For power of 1 watt to 16 watt ,the 5th digit will be a number or a letter code and the 6th digit will be the letters of W.
Example: 5W=5W; AW=10W; FW=15W
2.2.2 For power rating Between 20 watt to 99 watt, the 5
th
and the 6
th
digits will show the whole numbers of the power rating itself.
Example: 20=20W 75=75W
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 Cement Fixed Resistors the 8
th
digits will be coded with “W”or “P”to denote Wire-wound type or Power Film type respectively of the
Cement Fixed Resistor product. The 9
th
to 11
th
please refer to point a) of item 4.
Example: W12J=1.2Ω W120=12Ω P273=27KΩ
2.5 The 12
th
, 13
th
& 14
th
digits.
2.5.1 The 12th digit is to denote the Packaging Type with the following codes: B=Bulk/Box
2.5.2 The 13
th
digit is normally to indicate the Packing Quantity, This digit should be filled with “0”for the Cement products with
“Bulk/Box”packing requirements.
2.5.3 For some items, the 14
th
digit alone can use to denote special features of additional information with the following codes or standard
product
Example: 0= standard product
3. Ordering Procedure
(Example: PRM 5W ±5% 120KΩ B/B )
P R M 0 5 W J P 1 2 4 B 0 0
Product Type:
PRM0
=
PRM
Wattage:
2W=2W
3W=3W
5W=5W
7W=7W
AW=10W
Tolerance:
J=±5%
K=±10%
Resistance Value:
E-24 series: the 1st digit to
denote production type of the
product:
W=wire wound type
P=power film type
The 2nd and 3rd digits are for
the significant figures of the
resistance and the 4th digit
denotes number of zeros
following.
J=10
-1
, K=10
-2
, L=10
-
3
Packing Type:
B=Bulk/Box
Packing Qty：
0 = Bulk/Box
Additional
Information:
0=NIL