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78250MC PDF预览

78250MC

更新时间: 2024-01-25 19:01:58
品牌 Logo 应用领域
村田 - MURATA 变压器脉冲通信变压器数据通信变压器转换器RS-232数据接口
页数 文件大小 规格书
3页 150K
描述
MAX250 Compatible Converter Transformers

78250MC 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Active包装说明:ROHS COMPLIANT
Reach Compliance Code:compliantECCN代码:EAR99
风险等级:1.19Samacsys Confidence:4
Samacsys Status:Released2D Presentation:https://componentsearchengine.com/2D/0T/262895.1.1.png
Schematic Symbol:https://componentsearchengine.com/symbol.php?partID=262895PCB Footprint:https://componentsearchengine.com/footprint.php?partID=262895
3D View:https://componentsearchengine.com/viewer/3D.php?partID=262895Samacsys PartID:262895
Samacsys Image:https://componentsearchengine.com/Images/9/78250VC.jpgSamacsys Thumbnail Image:https://componentsearchengine.com/Thumbnails/1/78250VC.jpg
Samacsys Pin Count:5Samacsys Part Category:Transformer
Samacsys Package Category:OtherSamacsys Footprint Name:78250VC-3
Samacsys Released Date:2019-06-19 16:58:30Is Samacsys:N
应用:RS-232 DATA INTERFACE认证:UL
ET产品最小值:50 V-us高度:6.35 mm
绝缘电压:4000 VJESD-609代码:e3
长度:9 mm安装特点:THROUGH HOLE MOUNTED
功能数量:1最高工作温度:85 °C
最低工作温度:-40 °C包装方法:TUBE
物理尺寸:L9.0XB9.52XH6.35 (mm)初级电感:1000 µH
表面贴装:NO端子面层:Matte Tin (Sn)
变压器类型:DATACOM TRANSFORMER宽度:9.52 mm
Base Number Matches:1

78250MC 数据手册

 浏览型号78250MC的Datasheet PDF文件第2页浏览型号78250MC的Datasheet PDF文件第3页 
78250 Series  
MAX250 Compatible Converter Transformers  
CHARACTERISTICS 78250C/78250MC  
Parameter  
Conditions  
Min.  
1.0  
Typ.  
2.0  
2.0  
69  
Max.  
2.5  
3.0  
90  
Units  
mH  
μH  
Primary Inductance, LP  
Leakage Inductance, LL  
Interwinding Capacitance, CWW  
Primary D.C. Resistance, RDC  
Volt-time Product, Et  
10kHz, 100mV  
100kHz, 100mV  
100kHz, 100mV  
<0.1VDC  
pF  
1.0  
2.0  
Ω
Vμs  
Pins1/2 or 2/3  
50  
FEATURES  
RoHS compliant  
CHARACTERISTICS 78250VC/78250MVC  
Parameter  
Conditions  
Min.  
1.0  
Typ.  
2.0  
35  
Max.  
2.5  
40  
Units  
mH  
μH  
Primary Inductance, LP  
Leakage Inductance, LL  
Interwinding Capacitance, CWW  
Primary D.C. Resistance, RDC  
Volt-time Product, Et  
10kHz, 100mV  
100kHz, 100mV  
100kHz, 100mV  
<0.1VDC  
Maxim MAX250 compatible  
Isolation to 4kVrms  
9
12  
pF  
1.4  
1.8  
Ω
Vμs  
Industry-standard pinout  
Surface mount option  
UL 94 V-0 package materials  
Low profile  
Pins1/2 or 2/3  
50  
ORDER CODE DETAILS  
Order Code  
Package Type  
6 Pin DIL  
Packaging Type  
Tube  
Quantity  
78250C / 78250VC  
50  
50  
78250MC / 78250MVC  
78250MC-R / 78250MVC-R  
6 Pin SM  
Tube  
Toroidal construction  
6 Pin SM  
Tape & Reel  
500  
Fully encapsulated  
ABSOLUTE MAXIMUM RATINGS  
Operating free air temperature range  
Storage temperature range  
Industrial temperature range  
-40°C to 85°C  
-50°C to 125°C  
300°C  
DESCRIPTION  
Lead temperature 1.5mm from case for 10 seconds  
Peak current, IPK  
Isolation voltage 78250(M)C (flash tested for 1 second)  
Isolation voltage 78250V(M)C (flash tested for 1 second)  
300mA  
The 78250 series of converter transformers  
are specifically designed for use with Maxim  
chipsets to provide isolated RS232 interfaces.  
Carefully controlled turns ratios ensure consistent  
performance whilst a toroidal construction  
minimises EMI.  
1.5kVrms  
4.0kVrms  
All specifications typical at TA=25°C  
TECHNICAL NOTES  
ISOLATION VOLTAGE  
REPEATED HIGH-VOLTAGE ISOLATION TESTING  
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Volt-  
It is well known that repeated high-voltage isolation  
age’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ testing of a barrier component can actually degrade  
are all terms that relate to the same thing, a test voltage,  
applied for a specified time, across a component designed  
to provide electrical isolation, to verify the integrity of that  
isolation.  
isolation capability, to a lesser or greater degree  
depending on materials, construction and environ-  
ment. This series has toroidal isolation transformers,  
with no additional insulation between primary and  
secondary windings of enameled wire. While parts  
can be expected to withstand several times the  
stated test voltage, the isolation capability does de-  
pend on the wire insulation. Any material, including  
this enamel (typically polyurethane) is susceptible  
to eventual chemical degradation when subject to  
very high applied voltages thus implying that the  
number of tests should be strictly limited. We there-  
fore strongly advise against repeated high voltage  
isolation testing, but if it is absolutely required, that  
the voltage be reduced by 20% from specified test  
voltage.  
All products in this series are 100% production tested at  
their stated isolation voltage.  
A question commonly asked is, “What is the continuous  
voltage that can be applied across the part in normal opera-  
tion?”  
For a part holding no specific agency approvals both input  
and output should normally be maintained within SELV limits  
i.e. less than 42.4V peak, or 60VDC. The isolation test volt-  
age represents a measure of immunity to transient voltages  
and the part should never be used as an element of a safety  
isolation system. The part could be expected to function cor-  
rectly with several hundred volts offset applied continuously  
across the isolation barrier; but then the circuitry on both  
sides of the barrier must be regarded as operating at an  
unsafe voltage and further isolation/insulation systems must  
form a barrier between these circuits and any user-acces-  
sible circuitry according to safety standard requirements.  
This consideration equally applies to agency recog-  
nized parts rated for better than functional isolation  
where the wire enamel insulation is always supple-  
mented by a further insulation system of physical  
spacing or barriers.  
For full details go to  
www.murata-ps.com/rohs  
www.murata-ps.com  
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232  
KMP_78250C_C02 Page 1 of 3  

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