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DA2257-AL

更新时间： 2024-10-15 06:52:15
品牌 Logo 应用领域
线艺 - COILCRAFT 变压器
页数 文件大小 规格书
1页 186K
描述
Flyback Transformer

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中文翻译

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DA2257-AL 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：ActiveReach Compliance Code：compliant
ECCN代码：EAR99风险等级：5.04
其他特性：TURNS RATIO: 1:0.167;1:0.5, LENGTH AND HEIGHT DIM INCLUDE TERMINAL ALSO高度：12.7 mm
最大输入电压：60 V最小输入电压：14 V
JESD-609代码：e2长度：17.75 mm
安装特点：SURFACE MOUNT初级绕组数量：2
次级绕组数量：3最大工作频率：250 kHz
输出电压 1：5 V输出电压2：3.3 V
物理尺寸：L17.75XB13.46XH12.7 (mm)额定功率：11.6 W
初级电感：35 µH表面贴装：YES
端子面层：Tin/Silver (Sn/Ag)变压器类型：SMPS TRANSFORMER
宽度：13.46 mmBase Number Matches：1

DA2257-AL 数据手册

  
Document 509  
For National Semiconductor  
Flyback Transformer LM5071 & LM5072 PD Controllers  
• Dual-output flyback transformer for Power over Ethernet  
• Operates in continuous mode at 250 kHz with 14 –60 V input  
• 2000 Vrms isolation from primary and auxiliary to secondaries  
Core material Ferrite  
Terminations RoHS compliant tin-silver over tin over nickel over  
phos bronze. Other terminations available at additional cost.  
Weight 6.35g  
Ambient temperature –40°C to +85°C  
Storage temperature Component: –40°C to +85°C.  
Packaging: –40°C to +80°C  
Resistance to soldering heat Max three 40 second reflows at  
+260°C, parts cooled to room temperature between cycles  
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /  
85% relative humidity)  
Failures in Time (FIT) / Mean Time Between Failures (MTBF)  
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332  
Packaging 175 per 13″ reel. Plastic tape: 32 mm wide, 0.5 mm thick,  
28 mm pocket spacing, 12.93 mm pocket depth  
PCB washing Only pure water or alcohol recommended  
Part  
L at 0 A2  
±10% (µH)  
L at Ipk3  
min (µH)  
DCR max  
(Ohms)  
Leakage L4  
max (µH)  
Turns  
ratios  
Ipk3  
(A)  
number1  
Outputs  
DA2257-AL_  
35.0  
30.0  
0.225 (aux)  
0.138 (gate)  
0.010 (sec 1)  
0.018 (sec 2)  
0.062 (pri)  
0.95  
2:1 (pri:aux)  
3.6 :1 (pri:gate)  
6:1 (pri:sec1)  
3.6 :1 (pri:sec 2)  
2.7  
10 V, 0.05 A (aux)  
5.5 V, 0.05 A (gate)  
3.3 V, 2.0 A (sec 1)  
5.0 V, 1.0 A (sec 2)  
1. When ordering, please specify packaging code:  
DA2257-ALD  
2. Inductance is for the primary, measured at 250 kHz, 0.2 Vrms, 0 Adc.  
3. Ipk is peak primary current drawn at minimum input voltage.  
4. Leakage inductance is for the primary winding with all other pins  
shorted.  
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic  
tape (175 parts per full reel).  
5. Electrical specifications at 25°C.  
B = Less than full reel. In tape, but not machine ready. To  
have a leader and trailer added ($25 charge), use  
code letter D instead.  
9
Dot above pin1  
5
Gate  
Pri  
4
8
0.500  
max  
12,70  
Sec 1  
7
0.004/0,10  
0.039  
1
10  
1,00  
0.699  
max  
Aux  
Sec 2  
6
17,75  
0.050  
1,27  
0.028  
0.512  
2
0.061  
1,55  
0.590  
14,99  
0,70  
13,00  
6
5
1
0.530  
13,46  
Recommended  
Land Pattern  
max  
1
0.098  
2,50  
0.098  
2,50  
10  
Specifications subject to change without notice.  
Please check our website for latest information.  
Document509 Revised10/29/08  
© Coilcraft, Inc. 2009  
1

中文翻译

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DA2257-AL 替代型号

型号 品牌 替代类型 描述 数据表
DA2257-ALB COILCRAFT

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