Your one-stop resistive solutions specialists.

APPLICATIONS

-consumer electronics
-computers
-telecommunications
-use in control instruments

CHARACTERISTICS

Temperature Coefficient		±200ppm/c
Rated Load	within.±[1%]	rated power for 30 minutes continuously normal condition for 30 minutes
Short Time Over Load	within.±[1%]	5 x Power rating 5sec. normal condition for 30 minutes
Insulation Resistance		DC 500V, 10000MΩ min.
Voltage Withstanding	no damage	AC 500V for 1 minute
Load Life	within.±[2%]	70c, 1.5hours ON, 0.5hour OFF for 1000^+48/-0hours in total cooling for 1 hour
Moisture Load Life	within.±[2%]	40±2c, hum. of 90-95%, 1.5h. and cut off for 0.5hr Repeated for 500^+24/-0h. in total cooling for one hr at room temp.
Soldering Ability	At least 95% solder coverage	235±5c for 10±1seconds cooling for one hour at room temp.
Soldering Heat	within.±[2%]	at 270±5c for 10±1 seconds cooling for one hour at room temp.

* TCR (ppm/c) = [(R2-R1)/R1]Ⅹ[1/(T2-T1)Ⅹ10⁶ - R1: resistance value at reference temperature
- R2: resistance value at test temp.
- T2: test temp. (about 75c)
　

GENERAL SPECIFICATIONS

Model	Power Rating at 100c [Watts]	Resistance Range [Ω]	Operating Temperature Range [c]	Rated Voltage
SMW 2W	2	0.1 - 200	-55c - 200c	E = √P*R ( E = rated voltage [V] ) ( P : rated power[W] ) ( R : total nominal resistance[Ω] )
SMW 3W	3	0.1 - 300
SMW 5W	5	0.1 - 500

STRUCTURE

Material	Terminal is to be firmly connected with resistors element, both electrically and mechanically, and allow easy soldering.
Coating	Flameproof UL94V0 molded package, resistant to heat, humidity & insulation.
Marking	Marking is made on the surface with Rated Wattage, Nominal Resistance and Tolerance.

DIMENSIONS


Model	Dimensions (mm)
Model	A±0.3	B±0.3	C±0.3	D±0.3	E max.	F±0.3
SMW 2W	4	6.7	1.4	3.55	7.9	1.5
SMW 3W	5.5	10.5	1.7	5	12	2.3
SMW 5W	7.3	13.5	1.7	6.8	17	2.5

DERATING CURVE

ORDERING PROCEDURE EXAMPLE