ECONOLINE
Power Wire-Wound Fixed Resistors
Axial Lead
1W to 10W
FEATURES
Economical 1/2W to 10W
Color Banded Excellent Stability
5% & 10% Tolerance Welded Construction
High Temperature Flameproof Coating Ceramic Core

Type
Wattage
EC Normal Size Dimensions (mm) Resistance Range (ohms)
D±1 L ± Max H±3 d +0.02
-0.05
EC 1/2 1/2 4 10 28 0.6 0.1 ~ 39
EC1 1 5 12 28 0.7 0.1 ~ 50
EC2 2 5.5 16 28 0.8 0.1 ~ 120
EC3 3 6.5 17.5 28 0.8 0.1 ~ 200
EC5 5 8.5 26 38 0.8 0.5 ~ 470
EC7
7 8.5 32 38 0.8 0.5 ~ 470
EC8
8 8.5 41 38 0.8 1 ~ 1.5K
EC9
9 8.5 54 38 0.8 1 ~ 1.5K

Type
Wattage
ECS Small Size Dimensions (mm) Resistance Range (ohms)
D±1 L ± Max H±3 d +0.02
-0.05
ECS1 1 4 10 28 0.7 0.1 ~ 39
ECS2 2 5 12 28 0.7 0.1 ~ 50
ECS3 3 5.5 16 28 0.8 0.1 ~ 120
ECS5 5 6.5 17.5 28 0.8 0.1 ~ 200
ECS7 7 8.5 26 38 0.8 0.5 ~ 470
ECS8
8 8.5 32 38 0.8 0.5 ~ 470
ECS9
9 8.5 41 38 0.8 1 ~ 1.5K
ECS10
10 8.5 54 38 0.8 1 ~ 1.5K


DERATING CURVE

Performance Specifications
Characterisitcs Test Methods Limits
Temperature coefficient
JIS -C -5202 5.2
Natural resistance change per temp. degree centigrade
R1: Resistance value at room temperature (t1)
R2: Resistance value at room temp. +100°C (t2)
Test pattern: Room temp., Room temp. +100°C
±300PPM/°C
<20
± 400PPM/°C
Humidity (steady state)
JIS - C - 5202 7.5
Temporary resistance change after a 240 hour exposure in a humidity test chamber controlled at 40°C ± 2°C and 90-95% relative humidity. Resistance change rate is ± (3%+0.05) Max. with no evidence of mechanical damage.
Short-time overload
JIS - C - 5202 5.5
Permanent resistance change after the application of a potential of 2.5 times RCWV for 5 seconds. Resistance change rate is (2%+0.05) Max. with no evidence of mechanical damage.
Load life in humidity
JIS - C - 5202 7.9
Resistance change after 1,000 hours operating at RCWW with duty cycle of 1.5 hours "ON", 0.5 hour "OFF" in a humidity test chamber controlled at 40°C ± 2°C and 90-95% relative humidity. Resistance change rate is ± (1.5%+0.05) Max. with no evidence of mechanical damage.
Load life
JIS - C - 5202 7.10
Permanent resistance change after 1,000 hours operating at RCWV, with duty cycle of 1.5 hours "ON", 0.5 hour "OFF" at 70°C ± 2°C ambient. Resistance change rate is ± (5%+0.05) Max. with no evidence of mechanical damage
Terminal strength
JIS - C - 5202 6.1
Direct load: Resistance to a 2.5 kg direct load for 10 seconds in the direction of the longitudinal axis of the terminal leads.
Twist test: Terminal leads shall be bent through 90
° at a point of about 6mm from the body of the resistor and shall be rotated through 360° about the original axis of the bent terminal in alternating direction for a total of 3 rotations.
No evidence of mechanical damage
Resistance to soldering
heat JIS - C - 5202 6.4
Permanent resistance change when leads immersed to 3.2 - 4.8 mm from the body in 350°C ± 10°C solder for 3 ± 0.5 sec. Resistance change rate is ± (1%+0.05) Max. with no evidence of mechanical damage.
Solderability
JIS - C - 5202 6.5
The area covered eith a new, smooth, clean, shiny and continuous surface free from concentrated pinholes.
Test temp. of solder: 235
°C ± 5°C
Dwell time in solder: 3
+0.5 / -0 seconds
95% coverage min.

ORDERING INFORMATION
Example: 5W 10 ohm 5%
EC5
10R0
J
Type
Resistance
Tolerance
4 digit. <100 use R for decimal. >100 4th digit is multiplier
J = 5%
K = 10%
TO ORDER PRODUCT
E mail: microohm@mail.com
Call Toll Free: 1-800-845-5167
home page product guide