Surface Mount Thermistors
Leadless Top Bottom Terminated Chip Thermistor
BC Series Leadless Top/Bottom Terminated Chip Thermistors
Description
Littelfuse leadless top/bottom terminated chip thermistor elements
are designed for use on hybrid substrates, integrated circuits
and printed circuit boards. They have silver metallization on their
top and bottom surfaces which are suitable for various contact
techniques including epoxy or solder. Other metallization materials
are available as well. Since they are manufactured using the most
advanced equipment and technology available, their dimensional
parameters are extremely uniform, making the devices especially
suitable for use with automatic handling and placement equipment.
Options
• Non-standard
resistance values
and tolerances
• Special lead materials
Dimensions
• Special encapsulants or
probe housings
• Tape and reel
packaging
and lengths
Features
A
• Surface mountable
• Small size
• Very low profile
B
SILVER METALLIZATION
TOP AND BOTTOM
• Low cost
• Rapid response time
Part Numbering System
C
THICKNESS
BC 10 1 B 1 K
Series
Dimensions shown in inches.
A
A
See Dim
“L”
B
B
See Dim
“W”
Resistance @ 25ºC
C
C
Base Value
See Dim
“T”
Multiplier, power of 10
See Dim See Dim See Dim
“L”
“W”
“T”
Resistance Tolerance
K = ± 10%
No Significance
R-T Curve
Ex. 101 = 10 Ω x 101 = 100 Ω
Note: Not all combinations of Part Number codes are available. Contact Littelfuse for details.
LEADLESS CHIP THERMISTORS
“L”
“W”
SILVER METALLIZATION
TOP AND BOTTOM
© 2018 Littelfuse, Inc. Revised: February 26, 2018
Specifications are subject to change without notice.
“T”
(THICKNESS)
1
littelfuse.com
Surface Mount Thermistors
Leadless Top Bottom Terminated Chip Thermistor
BC Series Leadless Top/Bottom Terminated Chip Thermistors
Specifications
Beta (K)
0-50°C
Dissipation
Constant,
Nominal
(mW/°C)
Thermal
Time
Constant,
Max. - Still
Air (seconds)
Temperature
Rating
(°C)
-3.31
2941
1
2
-55 to +150
B
-3.31
2941
1
2
-55 to +150
10
F
-3.86
3419
1
2
-55 to +150
2252
10
J
-4.4
3892
1
2
-55 to +150
BC302J1K
3000
10
J
-4.4
3892
1
2
-55 to +150
BC502J1K
5000
10
J
-4.4
3892
1
2
-55 to +150
BC103J1K
10000
10
J
-4.4
3892
1
2
-55 to +150
BC203J1K
20000
10
J
-4.4
3892
1
2
-55 to +150
BC303J1K
30000
10
J
-4.4
3892
1
2
-55 to +150
BC503J1K
50000
10
J
-4.4
3892
1
2
-55 to +150
BC104R1K
100000
10
R
-4.68
4140
1
2
-55 to +150
Part
Number
Resistance
Ohms
@25°C
*Resistance
Tol. ± %
@ 25°C
BC101B1K
100
BC501B1K
R-T
Curve
Temperature
Coefficient
(%/°C) @ 25°C
10
B
500
10
BC102F1K
1000
BC222J1K
*Resistance tolerances of ± 1%, 2%, and 5% are available upon request
Packaging
Packaging Option
Packaging Code
Standard
ESD Waffle Pack
-WF
NA
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each
product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at:
www.littelfuse.com/disclaimer-electronics
© 2018 Littelfuse, Inc. Revised: February 26, 2018
Specifications are subject to change without notice.
2
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