碳膜固定電阻器
1. 適用範圍 Specification
CARBON FILM FIXED RESISTOR
1-1 本承認書僅適用本公司生產之各種碳膜固定電阻器 ( 1/8W、1/6W、1/4W、1/2W、1W、2W、3W)及其
小型化之成品規格。
The specification is only suitable for Carbon Film Fixed Resistors(1/8W、1/6W、1/4W、1/2W、
1W、2W、3W)and there are small size manufactured by
SHI MENG ELECTRONIC CO.,LTD.
1-2 參考標準 Applicable specification
本承認書參考《JIS C5201-2011》和《GB/T 5729-2003/IEC 60115-1:2001》
The specification Applicable specification《JIS C5201-2011》and《GB/T 5729-2003/IEC
60115-1:2001》
1-3 產品符合 RoHS 及 REACH 法規的最新環保要求。
Products meet the latest environmental requirements of RoHS and REACH regulations.
2. 特性
Feature
2-1 高品質、½成本
2-2 適用自動化插件
High quality performance、Great economy
Automatically insertable
3. 品名 Part Number
依據其種類，分別注明額定功率、容許差、公稱電阻值和½狀。
According the Resistors type, To mark the Rated power, Tolerance, Resistance value,and forming
type.
例(e.g)：
RD
種類
1/4W
額定功率
J(±5%)
容許差
100Ω
T52
½狀
阻值
Resistance
Type
Rated power
Tolerance
Forming
4. 結構圖 Construction
a) 鍍錫銅導線
b) 鍍錫鐵½
Tinned copper lead wire
Tin-plated steel caps
High stability Electric conduction film
High heat exchanged ceramic base
Epoxy resin coating
（注：可按要求提供 CP 線引腳）
c) 高穩定性導電膜
d) 高熱傳導瓷棒
e) 環氧樹脂塗料
f) 色環標示
Color ring Mark
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碳膜固定電阻器
CARBON FILM FIXED RESISTOR
5.
術語 Glossary
5-1.標稱阻值：電阻器的設計電阻值，通常標注在電阻器上。
Rated resistance：Designed resistance value usually indicated on the resistor。
5-2.額定環境溫度: 電阻器在額定功率下可持續工½的最高環境溫度。請注意如果電阻器安裝在設備內部，那麼此
處所謂的環境溫度並非設備周圍的溫度，而是設備內部、電阻器周圍的溫度。
Rated Ambient Temperature：Maximum ambient temperature at which the power rating may be applied
continuously. The rated ambient temperature refers to the temperature around the resistor mounted
inside the equipment, not to the air temperature outside the equipment。
5-3.額定功率：在 70℃環境溫度下進行耐久性試驗，而且阻值變化不超過該試驗的允許值時所允許的最大功率。
Rated power：At
70 ℃ ambient temperature durability test, and the change in resistance does not
exceed the value of the test allows the maximum power allowed。
5-4.降功率曲線：額定功率系適應在周圍溫度 70℃可以連續負載的最大功率,½額定環境溫度如超過 70℃時之額定
電力則依圖的降功率曲線實½。
Rated power is maximum power which can be continuously loaded at specified ambient temperature 70
℃, however when Rated Ambient Temperature exceeds 70℃,rated power should be determined form the
derating curve。
5-5.額定電壓：額定環境溫度或端子部溫度下可連續½加的最大直流電壓或交流電壓（商用頻率實效值），用額
定功率和公稱電阻值，按以下公式計算。½額定電壓不可超過最大工½電壓。
Rated Voltage：Maximum allowable D.C. or A.C. voltage(rms), capable to be continuously applied to
a resistor or a resistor element under the rated ambient temperature or terminal part temperature.
It shall be calculated from the rated power and nominal resistance using the following formula.
The rated voltage shall not exceed the max. working voltage。
U：電壓
I：電流
P：功率
R：阻值
5-6. 臨界阻值：在不超過最高½用電壓的情況下可½加額定功率的最大公稱電阻值。在臨界電阻值下，額定電壓
等於最大工½電壓。
Critical Resistance：The maximum nominal resistance value at which the rated power can be applied
without exceeding the maximum working voltage. The rated voltage is equal to the max. working voltage
at the critical resistance value。
5-7.最高½用電壓：電阻器或電阻元件上可連續½加的最大直流電壓或交流電壓（商用頻率實效值）。½在臨界電
阻值以下，可以½加的最大電壓為額定電壓。
Maximum Working Voltage：Maximum D.C. or A.C. voltage(rms) that can be continuously applied to the
terminations of a resistor. However, the maximum value of the applicable voltage is the rated voltage
at the critical resistance value or lower。
5-8.過負荷電壓：在短時間過載試驗中可連續½加5秒鐘的電壓，一般為額定電壓的2.5倍，½不可超過最大過載電壓。
Allowable voltage：which is applied in 5 sec. under short time overload test. Overload voltage shall
be 2.5 times of rated voltage or max. overload voltage, whichever is lower。
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