M ½ ½ ½ ½ ½ ½ ½ ½ , ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ .
S ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ , ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ .
C ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½
½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½
订 货 方 式
H O W T O O R D E R
A
08
4
7
2
/
J
电路结构代码
C ½ ½ ½ ½ ½ ½ ½ C ½ ½ ½
A
B
C
D
E
F
G
H
T
引脚数
N½½½½½ ½½
½½½½
电 阻 值 代 号1
R ½ ½ ½ ½ ½ ½ ½ ½ ½ V ½ ½ ½ ½ C ½ ½ ½ 1
三½数(E—24系列):
前两½表示有效数字, 第三½
表示有效数字后零的个数
T½½½½ ½½½½½½ (E-24 ½½½½½½):
T½½ ½½½½½ ½½½ ½½½½½½ ½½½
½½½½½½½½½½½ ½½½½½½½ ½½½
½½½ ½½½½½ ½½½ ½½½½½½½
½½½½½½ ½½ ½½½½½.
电 阻 值 代 号
2
R ½ ½ ½ ½ ½ ½ ½ ½ ½ V ½ ½ ½ ½ C ½ ½ ½ 2
½表示A、B、C、D、G型产品
时,该部分无表示。
½表示E、F、H、T型产品时,
该部分表示法与“电阻值代号1”
相同。
W½½½ ½½ ½½ ½½½ ½½½½ ½½ A,B,C,
D ½½ G, ½½½½½ ½½ ½½ ½½½½.
W½½½ ½½ ½½ ½½½ ½½½½ ½½ E,F,H ½½
T, ½½½ ½½½½½½½½½½ ½½ ½½½½ ½½
“R½½½½½½½½½
V½½½½ C½½½½”.
脚距代号
C½½½ ½½ ½½½ ½½½½½½½½
无表示
N ½ ½ ½ ½ ½
(0.07)
2.54½½
1.778½½
04 ̄14
电阻值误差精度代号
R½½½½½½½½½ T½½½½½½½½ C½½½
代 号
C½½½
F
G
J
误差精度
T½½½½½½½½
±1
%
±2
%
±5
%
≤5
0 ½Ω
结 构 图 和 外 ½ 尺 寸
C O N S T R U C T I O N A N D D I M E N S I O N S
单 ½
½ ½ ½ ½ : ½ ½
代号
C½½½
½
常规尺寸
N½½½½½ ½½½½½½½½½
2 . 5 4×( ½ - 1 ) + 2 . 5 ½ ½ ½
A、B、C、D、
E、F、G、H
型
T ½ ½ ½
型
T ½ ½ ½
T
½
½
½
½
½
½
3.00½½½
0 . 5 0±0 . 1
3 . 5 0±0 . 5
0 . 2 5±0 . 1
2 . 5 4×( ½ - 1 )±0 . 3
2 . 5 4±0 . 1
5.08½½½
8.50½½½
特殊尺寸
S½½½½½½ ½½½½½½½½½
1 . 7 7 8×( ½ - 1 ) + 1 . 5 ½ ½ ½
A、B、C、D、
E、F、G、H
型
T ½ ½ ½
T
型
T ½ ½ ½
3.00½½½
0 . 5 0±0 . 1
3 . 5 0±0 . 5
0 . 3 0±0 . 1
1 . 7 7 8×( ½ - 1 )±0 . 3
1 . 7 7 8±0 . 1
A
472J
½
J (跨接电阻
J½½½½½)
外包封 O½½½½ ½½½½½½½
导½ C½½½½½½½½
基片 C½½½½½½ ½½½½½½½½½
电阻½/保护层
R½½½½½½½½½/
P½½½½½½½½½ ½½½½½½½
引脚 L½½½ ½½½
注:½色点标记为第一脚
N½½½: T½½ ½½½½½ ½½½ ½½½½½ ½½½ ½½½½½ ½½½.
½
A
472
5.08½½½
8.50½½½
½
½
½
端1
½
½
端½
½
½
1
· ç » ª ¸ ß ¿ Æ
等 效 电 路
E Q U I V A L E N T C I R C U I T
型
号
T½½½
等
效
电
路
E ½ ½ ½ ½ ½ ½ ½ ½ ½ C ½ ½ ½ ½ ½ ½
型
号
T½½½
等
效
电
路
E ½ ½ ½ ½ ½ ½ ½ ½ ½ C ½ ½ ½ ½ ½ ½
R
1
A
1
2
R
2
R
½
B
3
R
1
=R
2
=……=R
½
½+1
1
R
1
R
2
2
3
4
R
½
2½
R
1
=R
2
=……=R
½
C
R
1
R
2
½
R
½
½+1
D
R
1
1
R
2
2
R
½-1
R
½
½
½+1
_
½
2
+1
1
2
R
1
=R
2
=……=R
½
R
1
=R
2
=……=R
½
E
R
1
R
2
1
2
3
4
5
R
1
R
2
½-1 ½
R
1
R
2
F
R1
R2
1
R2
2
R1
R2
3
R
1
=R
2
或R
1
≠R
2
½-1
R1
½
R
1
=R
2
或R
1
≠R
2
G
H
R1
R
1
R
2
R
½
R2
1
T
2
3
R
1
=R
2
=……=R
½
½+1
½+2
1
2 3
R2
R1
R2
4 5
R
1
=R
2
或R
1
≠R
2
R1
½ ½+1
R
2
R
1
2
R
2
R
1
R
2
R
1
R
1
1
3
½+1
R
1
=R
2
或R
1
≠R
2
参 考 标 准
R E F E R E N C E S T A N D A R D
G B / T 5 7 2 9 - 9 4
G B 7 3 3 8 - 8 7
J I S C 5 2 0 2 - 1 9 8 5
2
º Ä Í ø µ × Æ ÷
ñ ¤ Â ç ç è
T H I C K F I L M N E T W O R K R E S I S T O R
I E C E - 2 4
系 列 电 阻 值 代 码 对 照 表
I E C E - 2 4 S ½ ½ ½ ½ ½ R ½ ½ ½ ½ ½ ½ ½ ½ ½ C ½ ½ ½ ½ - ½ ½ ½ ½ ½ ½ ½ ½ ½ L ½ ½ ½
E - 2 4
系 列
E - 2 4 S ½ ½ ½ ½ ½ (×1 0
Ω )
( 单 ½½
½ ½ ½ : 1Ω
、1
0Ω
、1
0 0Ω
、1
KΩ
、1
0 KΩ
、1
0 0 KΩ
、1
MΩ
)
1.0
1.1
1.2
1.3
1.5
1.6
1.8
2.0
2.2
2.4
2.7
3.0
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
½
负 荷 下 降 曲 线
D E R A T I N G C U R V E
-55℃
P ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½
100
75
50
25
70℃
½用温度范围
O½½½½½½½½
T½½½½½½½½½½ R½½½½
-55℃ ̄125℃
额定负荷百分比
-75
-50
-25
0
25
50
75
100
125
150
环 境 温 度A
½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ (℃)
½ 电 阻 ½ 用 的 环 境 温 度 超 过7
0℃
时 , 其 额 定 负 荷(额 定 功 率 或 额 定 电 流)按 上 述 曲 线 下 降 。
F ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ 7 0℃, ½ ½ ½ ½ ½ ½ ½ ½ ½ ( ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ) ½ ½ ½ ½ ½ ½ ½
½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ .
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