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 .
Now I want to use PWM to steplessly adjust the LCD backlight, but the LCD requires 0-5V, and my MUC output is 3.3V, so I need an IC to achieve 0-5V stepless adjustment. I wonder if anyone has any good...
I sent an AT command to the serial port and then read the echoed data. It should be OK, 2 characters. After debugging, I found that the read data is 2 bits, but the returned data is ? for the first bi...
BUILD: [00:0000000026:WARNS ] Directory: C:\WINCE500\private\osinternal\test\hal\ does not exist. I can't find the osinternal folder under private. What is this folder for? Can I not use it?...
The msp430 contains an ADC12 module that can complete 12-bit analog-to-digital conversion. When the accuracy or other indicators are not high, the ADC12 inside the 430 microcontroller can be used to c...
Why does my LCD display program run well in the emulator, but after being burned into the flash, it cannot be displayed when it is powered on again and run independently? Is it because the access time...
With the rapid development of technology, automotive intelligence is increasing at an unprecedented rate. This not only enhances vehicle functionality and comfort, but also places higher deman...[Details]
New energy pure electric vehicles generally accelerate faster than comparable fuel-powered vehicles, both from a standing start and while accelerating. Many believe this is simply due to the motor'...[Details]
For healthcare professionals, accurate diagnosis and treatment are crucial for a clear picture of a person's health. However, healthcare professionals often rely on tests at medical facilities, cli...[Details]
Gross profit margin jumped from 13.6% in the first half of last year to 25.9%, almost doubling year-on-year.
On August 21, RoboSense released its interim performance report, in which the...[Details]
For autonomous vehicles to safely navigate the road, they must identify far more complex objects than just traffic lights, pedestrians, and other familiar objects. Among these obstacles is a crucia...[Details]
On August 22, South Korean media Nate reported on the 20th local time that Samsung Electronics is introducing Hyper Cell technology into its most advanced 2nm process technology, striving to improv...[Details]
Have you ever heard stories about "crazy appliances"? Think of microwaves that turn on automatically or ovens that preheat without any human input? With radios and electromagnetic interfaces ubiqui...[Details]
Electric vehicles' 12V batteries don't rely on a generator to power them. Only gasoline-powered vehicles rely on the engine to drive a generator to generate electricity while driving, which is used...[Details]
Based on the commutation technology, thyristor rectifiers are classified into two main types. Line-commutated and force-commutated inverters are commonly used, while other commutated inverters, nam...[Details]
PowiGaN achieves 95% efficiency at both light and full loads, meeting critical operational and safety requirements.
DARWIN, Australia and SAN JOSE, Calif.,
August 22, 2025 – Powe...[Details]
Tools/Materials
Yitong Chuanglian MODBUS to PROFIBUS Gateway YT-PB-03
Siemens s7-300
This article describes how to configure the YT-PB-03 MODBUS to PROFIBUS gat...[Details]
MQTT Ethernet I/O modules primarily collect I/O port information and transmit data over the network. In addition to being a TCP server, Ethernet I/O modules can also function as TCP clients. Furthe...[Details]
Lightweighting of automobiles is still a relatively unfamiliar term for automobiles. With the continuous improvement of environmental protection requirements, relevant regulations have also put for...[Details]
The driving mode is not unfamiliar to vehicles. According to the driving mode of the vehicle, there are front-wheel drive, rear-wheel drive and even four-wheel drive. Four-wheel drive is a major se...[Details]
With the gradual popularization of new energy vehicles in recent years, more and more people have been able to access and purchase electric vehicles. The structure of electric vehicles is composed ...[Details]