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HOME>Products TOP>Leaded Resistors>Precision Grade(SF Insulated Super Miniature Precision Metal Film Resistors)

Leaded ResistorsInsulated Super Miniature Precision Metal Film Resistors[SF]
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Construction Features Dimensions Type Designation Ratings Derating Curve
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Leaded Resistors/ Insulated Super Miniature Precision Metal Film Resistors SF
Coating color : Black
Marking : Alphanumeric
   Construction
     
Leaded Resistors/ Insulated Super Miniature Precision Metal Film Resistors SF Construction
1. Outer case
2. Trimming line
3. Resin for sealing
4. Ceramic core
5. Electrode cap
6. Lead wire
7. Resistive film
  
Features
  
• Super high precision resistors with a wide resistance range of 100 ~ 5.11M respond to tolerance 0.01% and T.C.R. 5×10-6/K.
• Extremely stable resistors with less variation 0.01%/year.
• Designated resistances (marking in 4-digit effective figures) of tolerances 0.01% - 0.25% are available.
• Products meet EU-RoHS requirements.
  
  
Dimensions
Type
 Dimensions (mm) Weight (g)
(1000pcs)
L D d (Nominal)
SF1/8 10.50.4 3.60.4 0.65 383 512
SF1/4 16.00.4 5.50.5 1044
SF1/2 20.00.5 6.70.5 0.8 1618
     
Type Designation

SF   1/8   Y   C   1003   B
         


Product Code

   Power Rating   T.C.R.
(×10-6/K)		   Terminal
Surface Material		   Nominal Resistance   Resistance Tolerance
     1/8 : 0.125W
1/4 : 0.25W
1/2 : 0.5W		   Y : 5
T : 10		   C : SnCu   4digits *1   T : 0.01%
Q : 0.02%
A : 0.05%
B : 0.1%
C : 0.25%
D : 0.5%
*1 It becomes a real number when a nominal resistance is 4 or more digits of significant figures.
Contact us when you have control request for environmental hazardous material other than the substance specified by EU-RoHS.

     
Ratings

Type
 Power Rating T.C.R.
(×10-6/K) 		Resistance Range () Max. Working
Voltage		 Max. Overload
Voltage
T : 0.01%
E24,E96		 Q : 0.02%
E24,E96		 A : 0.05%
E24,E96		 B : 0.1%
E24,E96		 C : 0.25%
E24,E96		 D : 0.5%
E24,E96
SF1/8YC 0.125W Y : 5 100 ~ 200k 100 ~ 200k 100 ~ 200k 100 ~ 200k 100 ~ 200k 100 ~ 200k 250V 500V
SF1/8TC T : 10 100 ~ 511k 100 ~ 511k 100 ~ 511k 100 ~ 511k
SF1/4YC 0.25W Y : 5 100 ~ 511k 100 ~ 511k 100 ~ 511k 100 ~ 511k 100 ~ 511k 100 ~ 511k 300V 600V
SF1/4TC T : 10 100 ~ 1M 100 ~ 1M 100 ~ 1M 100 ~ 1M
SF1/2YC 0.5W Y : 5 100 ~ 1M 100 ~ 1M 100 ~ 1M 100 ~ 1M 100 ~ 1M 100 ~ 1M 350V 700V
SF1/2TC T : 10 100 ~ 3.57M 100 ~ 5.11M 100 ~ 5.11M 100 ~ 5.11M
Rated Ambient Temperature : +70
Operating Temperature Range : -25 ~ +85
Rated voltage=√(Power Rating×Resistance value) or Max. working voltage, whichever is lower.

     
Derating Curve

Leaded Resistors/ Insulated Super Miniature Precision Metal Film Resistors SF Derating Curve
For resistors operated at an ambient temperature of 70 or above, a power rating shall be derated in accordance with the left derating curve.

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