EU
（
）
THICK FILM GENERAL PURPOSE
RoHS
Flat Chip Resistors
RK73B
■Construction
L
c
c
W
⑥
⑤
④
t
①ꢀProtective coating ④ꢀNi plating
②ꢀResistive film
③ꢀInner electrode
⑤ꢀSolder plating
⑥ꢀCeramic substrate
d
②
③
①
Coating color：Black
■Dimensions
■Features
・Wide lineup from 01005 to 2512 size.
Dimensions（mm）
c
Type
（Inch Size Code）
Weigh（t g）
（1000pcs）
L
W
d
t
・Excellent heat resistance and weather resistance are ensured by
the use of metal glaze thick film.
・Suitable for both flow and reflow solderings.
・Products with lead free termination meet EU-RoHS requirements.
EU-RoHS regulation is not intended for Pb-glass contained in
electrode, resistor element and glass.
1F（01005）
1H（0201）
1E（0402）
1E AT（0402）
1J（0603）
1J AT（0603）
2A（0805）
0.4±0.02
0.6±0.03
0.2±0.02 0.10±0.03 0.11±0.03 0.13±0.02
0.04
0.14
0.3±0.03
0.1±0.05 0.15±0.05 0.23±0.03
＋0.05
0.2±0.1
0.25±0.10
0.3±0.1
0.35±0.15
0.4±0.2
0.25
0.3±0.15
0.3±0.1
－0.1
＋0.1
1.0
0.5±0.05
0.35±0.05
0.45±0.1
0.68
2.14
4.54
9.14
－0.05
1.6±0.2
2.0±0.2
0.8±0.1
1.25±0.1
1.6±0.2
0.5±0.2
＋0.2
0.3
0.5±0.1
－0.1
・AEC-Q200 Tested (Exemption 1F).
2A AT（0805）
2B（1206）
0.45±0.25
0.5±0.3
0.6±0.2
0.55±0.10
＋0.2
0.4
－0.1
■Reference Standards
ꢀIEC 60115-8
ꢀJIS C 5201-8
ꢀEIAJ RC-2134C
2B AT（1206）
2E（1210）
3.2±0.2
0.55±0.35
0.8±0.2
＋0.2
2.6±0.2
2.5±0.2
0.4
15.5
24.3
－0.1
0.6±0.1
※1
W2H（2010）
5.0±0.2
6.3±0.2
0.5±0.3
※1
W3A（2512）
0.65±0.15
3.1±0.2
37.1
※1
W3A2（2512）
■Type Designation
＋0.2
※1 RK73B 2H, 3A and 3A2 are also still available (differen“t d”dimensions=0.4 mm)
－0.1
ꢀExample
RK73B
2B
T
TD
103
J
Product
Code
Power
Rating
1F：0.03W
1H：0.05W
1E：0.1W
1J：0.1W
0.125Ｗ
Characteristic
Terminal
Taping
Nominal
Resistance
Tolerance
Surface Material
Resistance
Nil：Standard
A：Heat shock
T：Sn
TX：4mm width-
ꢀꢀ1mm pitch plastic
ꢀꢀembossed
TBL・TCM：
2mm pitch
3 digits
G：±2%
※3
G：Au
ꢀ J：±5%
※2
※4
resistance
（L：Sn/Pb
）
2A：0.25Ｗ
2B：0.25W
2E：0.5W
W2H：0.75W
W3A：1W
press paper
TPL・TP：
※2 With type A（1E,1J,2A,2B）only T is available as the terminal surface material.
No resistance marking.
※3 Products with gold plated electrodes are also available with 1E, 1J and 2A types（ 10Ω～1MΩ）, so please consult with us.
※4 With type 1F, 1H, W2H, W3A, W3A2 only T is available as the terminal surface material.
The terminal surface material lead free is standard.
Contact us when you have control request for environmental hazardous material other than the substance specified by
EU-RoHS.
For further information on taping, please refer to APPENDIX C on the back pages.
2mm pitch
punch paper
TD：4mm pitch
punch paper
TE：4mm pitch
plastic
※4
W3A2：2W
embossed
BK：Bulk
■Ratings
Resistance Range（Ω）
Power
Rating
Rated Ambient Rated Terminal
T.C.R.
Max. Working Max. Overload
Packaging & Q'ty/Reel（pcs）
Type
G：±2%
E24
J：±5%
E24
－6
Temp.
Part Temp.
（×10 /K）
Voltage
Voltage
※7
TX
TBL
TCM
TPL・TP
TD
TE
±200
±250
100k～1M
10～91k
1～9.1
100k～10M
10～91k
1～9.1
1F
0.03W
70℃
—
20V
30V
40,000 20,000
—
—
—
—
0～＋300
±200
10～10M
—
10～10M
1～9.1
1H
1E
0.05W
0.1W
70℃
70℃
125℃
125℃
25V
50V
—
—
—
—
15,000
—
—
—
—
—
—
±400
TPL：20,000
TP ：10,000
±200
1～10M
1～10M
±200
±400
±200
±200
±400
±200
±400
±200
±400
±200
±400
±200
±400
±200
±400
1.1k～10M
—
1～1k
1.1k～10M
11M～22M
1～1k
75V
100V
200V
0.1W
70℃
70℃
70℃
125℃
125℃
125℃
※6
1J
—
—
—
TP：10,000
5,000
—
0.125W
0.25W
1～1M
1.1M～10M
1～5.6M
6.2M～10M
10～5.6M
—
1～1M
※6
※6
※6
※6
2A
150V
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
TP：10,000
5,000 4,000
5,000 4,000
5,000 4,000
1.1M～10M
1～5.6M
2B
0.25W
0.5W
70℃
70℃
70℃
70℃
70℃
125℃
125℃
125℃
125℃
95℃
—
—
—
—
—
6.2M～22M
1～5.6M
2E
200V
400V
6.2M～10M
1～5.6M
10～5.6M
—
W2H
W3A
W3A2
0.75W
1.0W
—
—
—
4,000
6.2M～22M
1～5.6M
10～5.6M
—
200V
200V
400V
400V
4,000
4,000
6.2M～22M
1～5.6M
10～5.6M
※5
2.0W
—
6.2M～22M
Operating Temperature Range :－55℃～＋125℃（1F）、－55℃～＋155℃（1H・1E・1J・2A・2B・2E・W2H・W3A・W3A2）
Rated voltage＝ Power Rating×Resistance value or Max. working voltage, whichever is lower.
√‾‾‾‾‾‾‾‾‾‾‾
For flat chip jumper resistor, please refer to RK73Z series.
※5 If you use at the rated power, please keep the condition that the terminal of the resistor is below the rated terminal part temperature. Please refer to the derating curves based on the terminal temperature of right side on the next page.
※6 Standard packaging：TD(4mm pitch punch paper)
※7 Standard taping specification of 1H is TCM. Previously available“TC(10,000pcs/Reel)”is not recommended for new designs.
If any questions arise whether to use the“Rated Ambient Temperature”or the“Rated Terminal Part Temperature”in your usage conditions, please give priority to the“Rated Terminal Part Temperature”.
For more details, please refer to“Introduction of the derating curves based on the terminal part temperature”on the beginning of our catalog.
While using under high power, the temperature of the product may increase depending on the condition of heat dissipation from PCB.
Be sure to check the terminal part temperature as well as precautions to use on delivery specifications before use.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
Aug. 2023
Oct. 2023
Contact our sales representatives before you use our products for applications including automotives, medical equipment and aerospace equipment.
Contact our sales representatives before you use our products for applications including automotives, medical equipment and aerospace equipment.
Malfunction or failure of the products in such applications may cause loss of human life or serious damage.
Malfunction or failure of the products in such applications may cause loss of human life or serious damage.
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