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Thick Film Chip Resistor - Surge
Type SCR Series

• Suitable for withstanding circuit for surge voltage
• Suitable for lead free soldering.

∆

 Features

∆

 Applications

• Measurement Instrument
• Power Supply

• Compatible with flow and reflow soldering.

∆

 Rating

Part Number

∆

 How to Order

Type

Size

0603

0805

1206

2010

2512

Power 

Rating

at 70

˚

C 

1/10W

1/8W

1/4W

1/2W

1W

Max.

RCWV

50V 

150V 

200V 

200V 

200V 

Max. 

Overload

Voltage

100V

300V

400V

400V

400V

10

Ω

1M

Ω

E-24

Resistance 

Tolerance 

(%) 

Temperature 

Coefficient

 (TCR; ppm/

˚

C )

Resistance

Range

Min.           Max.

± 100

±       5%(J)
± 10%(K)
±1 5%(L)
± 20%(M)

Standard

 Resistance

 Values 

103

example

SCR

0603

Type

Size

SCR

0603

T: Tape

J: ±5%

123 = 12x10^3

LF = Lead Free

0805

K: ±10%

= 12k 

Ω

1206

L: ±15%

2010

M: ±20%

2512

LF

123

Resistance Value

Packing

Tolerance

T

J

E-24 Series

∆

 Resistance Marking

473

ex. 473: 47x10^3 = 47K

Ω

105: 10x10^5 = 1M

Ω

1R5: 15x10^-1 = 1.5

Ω

0:  0

Ω

3 digit marking for E24

1R00

ex. 1R00: 1

Ω

R470 470m

Ω

R010 10m

Ω

4 digit marking for E241: 

Ω

~10m

Ω

Type

SCR

Thick Film Chip Resistor - Surge

• Medical Equipment
• Telecom Equipment
• Consumer Electronics

• Automotive Industry

 Liberty Bell Components, Inc. 11631 Seaboard Circle,  Stanton, CA 90680 (888)820-8885

Fax: (888)820-8884   email: sales@libertycomponents.com   website: www.libertycomponents.com

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Resistors

Thick Film Chip Resistor - Surge
Type SCR Series

∆

 Specifications and Test Methods

ITEM

SPECIFICATION

DC Resistance

J :± 5%      

K  :  ± 10%

L :±1 5%      M  :  ± 20%

∆

R

≤

±  (2% + 0.1

Ω

) 

∆

R

≤

±  (1% + 0.1

Ω

) 

∆

R

≤

±  (3% + 0.1

Ω

) 

∆

R

≤

±  (3% + 0.1

Ω

) 

∆

R

≤

±  (5% + 0.1

Ω

) 

No mechanical damage 

± 100 ppm/

˚

C

∆

R

≤

±  (1% + 0.1

Ω

) 

No mechanical damage 

∆

R

≤

±  (1% + 0.1

Ω

) 

No mechanical damage 

∆

R

≤

±  (1% + 0.1

Ω

) 

No mechanical damage 

Over 95%  of  termination
must be covered with solder

TEST METHOD

Short time         
Overload

High Voltage
Pulses 

Solderability

Resistance to
Solder Heat

Load Life
Humidity

Load Life

Intermittent
Overload

Temperature
Cycle

Insulation
Resistance

Bending
Strength

Temperature
Coefficient of 
Resistance
 (TCR)

Between termination and coating
must be over 1000M

Ω

IEC 60115-1 4.6.1.1 / JIS C 5202 5.6
Test voltage: 100 ± 15V

IEC 60115-1 4.33
Resistance change after bended on the 90mm PCB.
Bend: 3mm for 0603 , 0805
2mm for 1206 , 2010 , 2512 

IEC 60115-1 4.5 / JIS C 5202 5.1                              
Measure the resistance value.

IEC 60115-1 4.13 / JIS C 5202 5.5
2.5X Rated voltage or Max. Overload Voltage 
for 5 sec. measure resistance after 30 minutes                         

IEC 60115-1 4.17 / JIS C 5202 6.5                                                    
After immersing flux, dip in the 245 

± 2 

˚

C

 

molten solder bath for 3 ± 0.5 sec. 

IEC 801-5                                                                                                                      
1.2/50

μ

s 2kV 100 Pulses (Sequence 25 P /min)

IEC 60115-1 4.18 / JIS C 5202 6.4                                               
With 260 ± 5

˚

C for 10 ± 1 sec.

IEC 60115-1 4.24.2 / JIS C 5202 7.9                                      
Maintain the temperature of the resistor at 40 

± 2 

˚

C

 

and 90~95% R.H. with the rated voltage 
applied.Cycle ON for 1.5 hours and OFF for 0.5 hour 
for 1000+48/-0 hours. After 1~4 hour, measure the 
resistance value.                           

IEC 60115-1 4.25.1 / JIS C 5202 7.10                                                             
Permanent resistance change after 1000+48/-0 
hours (1.5 hours ON , 0.5 hour OFF) at   RCWV 
or Max.Keep the resistor at 70 ± 2

˚

C ambient 

JIS C 5202 5.8                                                                           
4.0 x Rated voltage (Max. Overload Voltage)                             
1 sec ON, 25 sec OFF, test 10,000 cycles

IEC 60115-1 4.8.4.2 / JIS C 5202 5.2 
Test temperature : 25

˚

C (T1)

→

 -55

˚

C (T2)

                                          25

˚

C (T1)

→

 125

˚

C (T2)

TCR (ppm/

˚

C)   =

R2-R1

R1

x

x

T2-T1

1

10

6

T1: 25

˚

C    T2: Test temperature

R1: Resistance at reference temperature (T1)
R2: Resistance at test temperature (T2)

IEC 60115-1 4.19 / JIS C 5202 7.4                                                
Repeat 5 cycles as follows                                                                         
 -55

˚

C(30 min.) ~  + 25

˚

C(2~3 min.)                                         

+125

˚

C(30 min.) ~  + 25

˚

C(2~3 min.) 

Type

SCR

Thick Film Chip Resistor - Surge

 Liberty Bell Components, Inc. 11631 Seaboard Circle,  Stanton, CA 90680 (888)820-8885

Fax: (888)820-8884   email: sales@libertycomponents.com   website: www.libertycomponents.com