APPROVAL SHEET
RX and RXS SERIES
PERCISION WIREWOUND RESISTORS
PRODUCE
CHECK AND APPROVE
ACCEPTED BY
EM
CE
HONORABLE CUSTOMER
Edison Chen
Charles Chen
Mar.21,2023
Mar.23,2023
www.thunder-resistor.com
sales@thunder-resistor.com
Page 1 of 9
1. PRODUCT:
PRECISION WIRE WOUND RESISTORS
FEATURES
·
Advanced American alloy technology
· Very low TCR: lower than ±10ppm/℃.
· Tolerance up to ±0.05%
· Excellent overall stability: Class 0.25
· Very low noise and voltage coefficient
· Non-inductance winding available under request
· Perfect pulse loading capability
APPLICATIONS
·
Current sensor for test and measuring instruments
·
Power supply with high reliability
·
Components burn-in devices
·
Pulse load and in rush current protector
·
Medical equipment
·
Military electronics
www.thunder-resistor.com
sales@thunder-resistor.com
Page 2 of 9
2. PART NUMBER: Part number is identified by the series name, power rating, size
code, tolerance, temperature coefficient, packing style and resistance value.
Example:
RX
Series
Name
17
S
F
2
Power Size Tolerance
rating Code
Temperature
Coefficient
T
Packing
Style
1R80
Resistance
Value
(1) Series name:
RX SERIES
(2) Power Rating:
15=1/2W; 16=1.0W; 17=2.0W; 18=3.0W; 19=5.0W; 6~30=6~30W
Size code:
Blank = normal size;
S:small size;
M = tiny size
(3) Tolerance: W±0.05%; B=±0.1%; C=±0.25%; D=±0.50%; F=±1.0%; J=±5.0%
(4) T.C.R.:
7 = 5ppm/℃;
6 = 10ppm/℃; 5 = 15ppm/℃; 4 = 20ppm/℃;
3 = 25ppm/℃; 2 = 50ppm/℃; 1 = 100ppm/℃; 0=250ppm/℃
(5) Packaging Type: B = Bulk/Box; T = Tape on Box Packing
M = M type deforming;
F = Vertical deforming
(6) Resistance Value for J tolerance: R47、1R0、100、101、102、333、104……
(7) Resistance Value for tighten tolerance: R470、1R00、10R0、1000、1001、1002
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sales@thunder-resistor.com
Page 3 of 9
3. COLOR-CODE MARKING:
G(±2.0%), J(±5.0%) and K(±10.0%) tolerance resistors may have 2 bands for
significant figures. Tight tolerance resistors have three bands for significant figures.
An additional band could indicate temperature coefficient for TCR
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