Spec. No.:
Date:
LTC−K−HTS−0001
2017. 1. 10
/8
Sp e c i f i c a t i o n
Title:
LINEAR
POSITIVE
RECTANGULAR TYPE
T-C
CHIP
THERMISTORS;
Style:
LTC1/10,1/8
RoHS COMPLIANCE ITEM
Halogen and Antimony Free
Product specification contained in this specification
are subject to change at any time without notice
If you have any questions or a Purchasing Specification for any quality
Agreement is necessary, please contact our sales staff.
Hokkaido Research Center
Approval by: T. Sannomiya
Drawing by: M. Shibuya
Note: Stock conditions
Temperature:
+5°C ∼ +35°C
Relative humidity: 25%
∼
75%
The period of guarantee: Within 2 year from shipmen t by the company.
Solderability shall be satisfied.
Title:
Drawing No:
LINEAR POSITIVE T−C CHIP THERMISTORS; RECTANGULAR TYPE
LTC1/10,1/8
LTC−K−HTS−0001
Page:
1/11
/8
1. Scope
1.1 This specification covers the detail requirements for linear positive T−C chip thermistors; rectangular type, style of
LTC1/10,1/8.
1.2 Applicable documents
JIS C 5201−1: 2011, JIS C 5201−8: 2014, JIS C 5201−8−1: 2014
IEC60115−1: 2008, IEC60115−8: 2009, IEC60115−8−1: 2014
EIAJ RC−2134C−2010
2. Classification
Type designation shall be the following form.
(Example)
LTC
1/10
152
J
B
10
1
2
3
4
5
6
Style
1 Linear positive T−C chip thermistors; rectangular type
2 Rated dissipation and/or dimension
3 Temperature coefficient of resistance
10
±1000×10
−
6
/ °C
4 Rated resistance
152
E24 Series, 3 digit, Ex. 152--> 1.5kΩ
5 Tolerance on rated resistance
J
±5%
6 Packaging form
B
Bulk (loose package)
TP
Paper taping
3. Rating
3.1 The ratings shall be in accordance with Table−1.
Style
LTC1/10
LTC1/8
Rated dissipation (W)
0.1
0.125
Table−1
Isolation voltage (V)
100
Style
Category temperature range (℃)
−40∼+125
Product specification contained in this specification are subject to change at any time without notice.
If you have any questions or a Purchasing Specification for any quality agreement is necessary, please contact our sales staff.
Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2017.1.10
Title:
Drawing No:
LINEAR POSITIVE T−C CHIP THERMISTORS; RECTANGULAR TYPE
LTC1/10,1/8
LTC−K−HTS−0001
Page:
2/11
/8
3.2 Temperature coefficient of resistance and rated resistance .
3.2.1 The combination of temperature coefficient of resistance and rated resistance shall be in accordance with Table−2.
Table−2
Rated resistance
Temperature coefficient of resistance
Resistance range
Nominal value
Tolerance
Tolerance
Symbol
(10
−
6
/℃)
LTC1/10
LTC1/8
100Ω∼5.1kΩ
100Ω∼5.1kΩ
100Ω∼5.1kΩ
100Ω∼3.3kΩ
100Ω∼3.3kΩ
100Ω∼1.6kΩ
100Ω∼3.3kΩ
100Ω∼3.3kΩ
100Ω∼3.3kΩ
51Ω∼910Ω
51Ω∼560Ω
33Ω∼360Ω
33Ω∼200Ω
100Ω∼10kΩ
100Ω∼10kΩ
100Ω∼10kΩ
100Ω∼4.7kΩ
100Ω∼4.7kΩ
100Ω∼2.2kΩ
100Ω∼3.6kΩ
100Ω∼3.6kΩ
100Ω∼3.6kΩ
51Ω∼1.2kΩ
51Ω∼910Ω
33Ω∼470Ω
33Ω∼180Ω
05
08
10
15
20
24
28
30
33
36
39
42
45
500
800
1000
1500
2000
2400
2800
3000
3300
3600
3900
4200
4500
±100×10
−
6
/℃
±150×10
−
6
/℃
±15％
J(±5%)
±10％
3.2.2 The symbol of the temperature coefficient of resistance
The symbol of the temperature coefficient of resistance shall be in accordance with Table-2.
Example) 05⋅⋅⋅⋅⋅500×10
−
6
/°C
10⋅⋅⋅⋅⋅1,000×10
−
6
/°C
3.2.3 Symbols for rated resistance
The symbol of the rated resistance shall be combined one English capital letter and one digit in accordance with Table−3
and Table−4.
Table−3
Code
A
B
C
D
E
F
G
H
J
K
L
M
Value
1.0 1.1 1.2 1.3 1.5 1.6 1.8 2.0 2.2 2.4 2.7 3.0
Code
Value
N
3.3
S
T
4.7 5.1
Table−4
Code
0
1
０
Multiplier
10 10
１
Example) A1⋅⋅⋅⋅⋅1.0×10
1
=10Ω
E3⋅⋅⋅⋅⋅1.5×10
3
=1.5kΩ
P
3.6
Q
3.9
R
4.3
U
5.6
2
10
２
V
6.2
3
10
３
W
6.8
4
10
４
X
7.5
Y
8.2
Z
9.1
3.3 Climatic category
40/125/56
Lower category temperature
Upper category temperature
Duration of the damp heat, steady state test
−40
°C
+125 °C
56days
3.4 Stability class
5%
Limits for change of resistance:
−for
long - term tests
±(5%+0.1Ω)
−for
short - term tests
±(1%+0.05Ω)
Product specification contained in this specification are subject to change at any time without notice.
If you have any questions or a Purchasing Specification for any quality agreement is necessary, please contact our sales staff.
Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2017.1.10
Title:
Drawing No:
LINEAR POSITIVE T−C CHIP THERMISTORS; RECTANGULAR TYPE
LTC1/10,1/8
LTC−K−HTS−0001
Page:
3/11
/8
3.5 Derating
The derated values of dissipation at temperature in excess of 70 °C shall be as indicated by the following curve.
100
Percentage
of the rated
dissipation
(%)
0
−40
70
125
Ambient temperature (°C)
Area of recommended
operation
Figure−1Derating curve
3.6 Rated voltage
d. c. or a. c. r. m. s. voltage calculated from the square root of the product of the rated resistance and the rated dissipation.
E : Rated voltage (V)
E =
P · R
P : Rated dissipation (W)
R : Rated resistance (Ω)
4. Packaging form
The standard packaging form shall be in accordance with Table−5.
Table−5
Symbol
B
TP
Packaging form
Bulk (loose package)
Paper taping
8mm width, 4mm pitches
Standard packaging
quantity / units
1,000 pcs.
5,000 pcs.
5. Dimensions
5.1 The resistor shall be of the design and physical dimensions in accordance with Figure−2 and Table−6.
L
c
c
H
d
d
Figure−2
Table
−6
W
Style
LTC1/10
LTC1/8
L
2.0
±
0.15
3.1
±
0.1
W
+0.10
1.25
−0.05
H
0.6
±
0.1
0.6
±
0.1
c
0.4
±
0.2
0.45
±
0.20
Unit : mm
d
0.3
0.3
+0.2
−0.1
+0.2
−0.1
1.55
±
0.10
Product specification contained in this specification are subject to change at any time without notice.
If you have any questions or a Purchasing Specification for any quality agreement is necessary, please contact our sales staff.
Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2017.1.10
Title:
Drawing No:
LINEAR POSITIVE T−C CHIP THERMISTORS; RECTANGULAR TYPE
LTC1/10,1/8
LTC−K−HTS−0001
Page:
4/11
/8
5.2 Net weight (Reference)
Style
Net weight(mg)
LTC1/10
5
LTC1/8
9
6. Marking
The combination symbol of nominal resistance value and temperature coefficient of resistance shall be marked on over coat
side as shown in following examples.
(Example) 10Ｅ3⋅⋅⋅⋅⋅1,000×10
−
6
/°C,1.5kΩ
10Ｋ2⋅⋅⋅⋅⋅3,900×10
−
6
/°C,240Ω
7. Performance
7.1 The standard condition for tests shall be in accordance with Sub−clause 4. 2, JIS C 5201−1: 2011.
7.2 The performance shall be satisfied in Table−7.
Table−7(1)
No. Test items
Condition of test (JIS C 5201 - 1)
Performance requirements
1
Visual examination
As in 4. 4. 1
Sub−clause 4. 4. 1
The marking shall be legible, as
Checked by visual examination.
checked by visual examination.
2
Dimension
As specified in Table−6 of this
Sub−clause 4. 4. 2
specification.
Resistance
As in 4. 5. 2
Sub−clause 4. 5
The resistance value shall
correspond with the rated
resistance taking into account the
specified tolerance.
3
Voltage proof
No breakdown or flash over
Sub−clause 4. 7
Method: 4. 6. 1. 4(See Figure−5)
Test voltage: Alternating voltage with a peak
value of 1.42 times the insulation voltage.
Duration: 60 s ± 5 s
R
≥
1G
Ω
Insulation resistance
Test voltage : Insulation voltage
Duration: 1 min.
4
Solderability
As in 4. 17. 4. 5
Sub−clause 4. 17
The terminations shall be covered
Without ageing
Flux: The thermistors shall be immersed in a with a smooth and bright solder
coating.
non – activated soldering flux for 2s.
Bath temperature: 235 °C ± 5 °C
Immersion time: 2 s ± 0.5 s
Product specification contained in this specification are subject to change at any time without notice.
If you have any questions or a Purchasing Specification for any quality agreement is necessary, please contact our sales staff.
Issue: KAMAYA ELECTRIC CO., LTD. Research & Development Department HOKKAIDO Research center Last update: 2017.1.10
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