| FLYiNG 散料庫存 | 電洽/Contact |
| FLYiNG 標準包裝庫存 | 電洽/Contact |
#Semitec #CRD #定電流二極體 #Semitec產品介紹
文件:CRD Series.png)
CRD Current regulating diode 定電流二極體
E Series (Axial Lead Type) E 系列（軸向引線型）
S Series (SMD Type) S 系列（貼片型）
Applications 應用
1: Pinch-off current and limiting current are measured by pulse wave at 25 ℃ environment temperature
2: Temperature coefficient is calculated from measurements at 25 and 50 ℃.
文件:CRD Series
CRD Current regulating diode 定電流二極體
Current Regulating Diodes (CRD hereunder) are diodes that maintain a constant current flow despite voltage fluctuations. CRDs supply constant current over a wide range of voltage from sub 1V to 100V. Constant current is supplied, regardless of fluctuations in voltage applied, load resistance changes and ripple voltage. Creating a constant current circuit generally involves multiple components, but with SEMITEC CRDs only one part is required to accomplish the same function.
定電流二極體（以下簡稱 CRD）是一種即使電壓發生變動仍能維持固定電流的二極體。CRD 可在低於 1V 至 100V 的廣泛電壓範圍內提供恆定電流。無論施加電壓的波動、負載電阻變化或漣波電壓的影響，皆能維持穩定的電流輸出。一般建立定電流電路通常需要多個元件，但使用 SEMITEC 的 CRD 僅需單一元件即可達成相同功能。
E Series (Axial Lead Type) E 系列（軸向引線型）
CRDs offers a compact and reliable solution for keeping the current constant. The CRD E series products come in the DO-35 style package with DHD (double heat sink diode) construction.
– Hermetically sealed, high reliability package
– Suitable for mass production due to lower cost materials
– Compact device offered in the DO-35 (300 mW) package
18mA CRD (E-183) With the addition of an 18mA CRD to our product lineup (up from 15mA), it is now possible to supply constant current to 20mA high brightness LEDs for luminance stabilization.
SEMITEC’S CRD E series is fully compliant with RoHS DIRECTIVE2011/65/EU.
– Hermetically sealed, high reliability package
– Suitable for mass production due to lower cost materials
– Compact device offered in the DO-35 (300 mW) package
18mA CRD (E-183) With the addition of an 18mA CRD to our product lineup (up from 15mA), it is now possible to supply constant current to 20mA high brightness LEDs for luminance stabilization.
SEMITEC’S CRD E series is fully compliant with RoHS DIRECTIVE2011/65/EU.
CRD 提供一種可維持電流恆定的緊湊且可靠的解決方案。CRD E 系列產品採用 DO-35 封裝形式，並採用 DHD（雙散熱二極體）結構。
– 氣密封裝，高可靠度
– 採用較低成本材料，適合大量生產
– 小型化元件，提供 DO-35（300 mW）封裝
18mA CRD（E-183）
隨著 18mA CRD（由原本 15mA 提升）加入產品系列，現在可為 20mA 高亮度 LED 提供穩定的定電流，以達到亮度穩定化。
SEMITEC 的 CRD E 系列完全符合 RoHS 指令 2011/65/EU。
S Series (SMD Type) S 系列（貼片型）
CRD S series products are surface mount devices that come in resin-sealed SMD package. Our products have about the same height as the latest low profile LEDs so that when mounted next to each other,the light will not be blocked off
22 mA CRD We have added a 22 mA CRD (S-223T) to our product lineup in order to accommodate high luminance LEDs. This has become necessary since in the case of high luminance LEDs often two CRDs had to be used. With our new 22 mA (223T) product it is again possible to use just one product for current stabilization.
SEMITEC’S CRD E series is fully compliant with RoHS DIRECTIVE2011/65/EU.
CRD S 系列產品為表面黏著型元件，採用樹脂密封的 SMD 封裝。我們的產品高度與最新低外型 LED 大致相同，因此在相鄰安裝時不會遮擋光線。
22 mA CRD
為了因應高亮度 LED 的需求，我們在產品系列中新增 22 mA CRD（S-223T）。在高亮度 LED 應用中，過去常需要使用兩顆 CRD，而採用新的 22 mA（S-223T）產品後，即可再次只使用單一元件來實現電流穩定。
SEMITEC 的 CRD S 系列完全符合 RoHS 指令 2011/65/EU。
22 mA CRD We have added a 22 mA CRD (S-223T) to our product lineup in order to accommodate high luminance LEDs. This has become necessary since in the case of high luminance LEDs often two CRDs had to be used. With our new 22 mA (223T) product it is again possible to use just one product for current stabilization.
SEMITEC’S CRD E series is fully compliant with RoHS DIRECTIVE2011/65/EU.
CRD S 系列產品為表面黏著型元件，採用樹脂密封的 SMD 封裝。我們的產品高度與最新低外型 LED 大致相同，因此在相鄰安裝時不會遮擋光線。
22 mA CRD
為了因應高亮度 LED 的需求，我們在產品系列中新增 22 mA CRD（S-223T）。在高亮度 LED 應用中，過去常需要使用兩顆 CRD，而採用新的 22 mA（S-223T）產品後，即可再次只使用單一元件來實現電流穩定。
SEMITEC 的 CRD S 系列完全符合 RoHS 指令 2011/65/EU。
Applications 應用
- Constant current source for LED brightness stabilization
LED 亮度穩定用定電流源 - LED street lights, LED fluorescent lamps, LED light bulbs, LED downlights
LED 路燈、LED 日光燈、LED 燈泡、LED 崁燈 - Constant voltage circuit for supplying constant current to Zener diodes
提供齊納二極體定電流的定電壓電路 - Constant current source for proximity sensors and other sensors
接近感測器及其他感測器用定電流源 - Battery charge / discharge circuits
電池充放電電路 - Electrolytic capacitor aging equipment
電解電容老化測試設備 - Constant current test equipment for various semiconductor devices
各類半導體元件定電流測試設備 - Telecommunications line interface
通訊線路介面 - Earth leakage circuit breakers
漏電斷路器 - Current source for piezoelectric actuators
壓電致動器用電流源 - Stabilized power supply circuits
穩壓電源電路
| E-Series | S Series | |
| Item | Rating | Rating |
| Rated power 額定功率 |
300mW | 500mW |
| Rated voltage (pulse wave) 額定電壓(脈衝波) |
100V(E-101〜E-562) | 100V(S101T～562T) |
| 50V(E-822〜-E183) | 50V(S822T～223T) | |
| Allowable Reverse current 允許反向電壓 |
50mA | |
| Junction temperature 接面溫度 |
150℃ | |
| Operating temperature range 工作溫度範圍 |
-30℃〜150℃ | -40℃～+150℃ |
| Product number | Pinch-off current (10 V)1 |
Limiting current1 | Limiting current ratio I100V /Ip *I30V / Ip |
Temperature coefficient (% / ℃)2 |
||||||||||
| SMD | Leaded | Ip (mA) typical |
Min - max | Vk (V) | Ik (Ma) | |||||||||
| S-101T | E-101 | 0.1 | 00.05 - 0.21 | 0.5 | 0.8 lpmin. | 1.1 max | +2.10 to +0.10 | |||||||
| S-301T | E-301 | 0.3 | 0.20 - 0.4 | 0.8 | + 0.40 to - 0.20 | |||||||||
| S-501T | E-501 | 0.5 | 0.40 - 0.6 | 1.1 | +0.15 to - 0.25 | |||||||||
| S-701T | E-701 | 0.7 | 0.60 - 0.9 | 1.4 | 0.00 to - 0.32 | |||||||||
| S-102T | E-102 | 1 | 0.88 - 1.3 | 1.7 | - 0.10 to - 0.37 | |||||||||
| S-152T | E-152 | 1.5 | 1.28 - 1.7 | 2 | - 0.13 to - 0.40 | |||||||||
| S-202T | E-202 | 2 | 1.68 - 2.3 | 2.3 | - 0.15 to - 0.42 | |||||||||
| S-272T | E-272 | 2.7 | 2.28 - 3.1 | 2.7 | -0.18 to - 0.45 | |||||||||
| S-352T | E-352 | 3.5 | 3.00 - 4.1 | 3.2 | - 0.20 to - 0.47 | |||||||||
| S-452T | E-452 | 4.5 | 3.90 - 5.1 | 3.7 | - 0.22 to - 0.50 | |||||||||
| S-562T | E-562 | 5.6 | 5.00 - 6.5 | 4.5 | - 0.25 to - 0.53 | |||||||||
| S-822T | E-822 | 8.2 | 6.56 - 9.8 | 3.1 | 1.0 max (I30 /Ip) |
- 0.25 to - 0.45 | ||||||||
| S-103T | E-103 | 10 | 8.00 - 12.4 | 3.5 | - 0.25 to - 0.45 | |||||||||
| S-123T | E-123 | 12 | 9.60 - 14.4 | 3.8 | - 0.25 to - 0.45 | |||||||||
| S-153T | E-153 | 15 | 12.0 - 18.0 | 4.3 | - 0.25 to - 0.45 | |||||||||
| S-183T | E-183 | 18 | 16.0 - 20.0 | 4.6 | - 0.25 to - 0.45 | |||||||||
| S-223T | 22.5 | 20.0 - 25.0 | 5.3 | - 0.25 to - 0.45 | ||||||||||
2: Temperature coefficient is calculated from measurements at 25 and 50 ℃.