电子工程世界电子工程世界电子工程世界

关键词

搜索

型号

搜索

250.000MHZHC49/T/3W/3/15/20/8PF/AT7

产品描述Parallel - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PACKAGE-3
产品类别无源元件    晶体/谐振器   
文件大小156KB,共1页
制造商Euroquartz
官网地址http://www.euroquartz.co.uk/
标准
下载文档 详细参数 全文预览

250.000MHZHC49/T/3W/3/15/20/8PF/AT7概述

Parallel - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PACKAGE-3

250.000MHZHC49/T/3W/3/15/20/8PF/AT7规格参数

参数名称属性值
是否无铅不含铅
是否Rohs认证符合
包装说明RESISTANCE WELDED, HERMATIC SEALED PACKAGE-3
Reach Compliance Codecompli
老化3 PPM/FIRST YEAR
晶体/谐振器类型PARALLEL - 7TH OVERTONE
驱动电平1000 µW
频率稳定性0.0015%
频率容差3 ppm
负载电容8 pF
安装特点THROUGH HOLE MOUNT
标称工作频率250 MHz
最高工作温度70 °C
最低工作温度-20 °C
物理尺寸L11.5XB4.9XH11.2 (mm)/L0.453XB0.193XH0.441 (inch)
串联电阻120 Ω
表面贴装NO
Base Number Matches1

文档预览

下载PDF文档
THROUGH-HOLE CRYSTALS
HC49 SERIES CRYSTALS
DESCRIPTION
HC49 crystals are a long-established industry-standard part. Basic
specification HC49 crystals provide the lowest cost crystal available but
these crystals can also be manufactured to very close tolerances and low
ESR values. Holder variants are HC49/T (truncated), providing a lower
height version, 3-wire versions where the crystal base and body can be
earthed by a centre earth wire and HC50 which has larger diameter leads
specifically for socket mounting.
OUTLINES & DIMENSIONS
FEATURES
·
·
·
·
·
·
Very low cost crystal
Available with close tolerances
Fully customisable specification
Comprehensive Euroquartz stockholding
Industry-standard package with options
Very wide frequency range
GENERAL SPECIFICATION
Frequency Range:
Calibration Tolerance at 25ºC:
Frequency stability over temp:
Load Capacitance:
Ageing:
Drive level:
Static capacitance (C0):
Holder:
Part Numbers for Holder Variants *
Holder Type
Standard 2 lead:
Low height versions:
Centre Earth Lead:
Centre Earth Lead (Low):
‘Plug-in’ for use in socket:
Holder Designation
HC49
HC49/T (from 4.0MHz)
HC49/3W
HC49/T/3W (from 4.0MHz)
HC-50
1.0MHz to 250.0MHz
from ±3ppm to ±50ppm
from ±3ppm to ±100ppm
8pF to 50pF, or Series
±3ppm max 1st year,
±1ppm max per year after
1mW max
7pF max
Resistance-weld, hermetic seal
* HC49 crystals are also available for surface-mount applications with
formed leads and fitted with a clip. See ‘49MJ’ in the surface-mount
crystal section on Euroquartz website; www.euroquartz.co.uk
OSCILLATION MODE & ESR
Frequency
(MHz)
1.0 ~ 1.3
2.01 ~ 3.0
3.01 ~ 3.2
3.21 ~ 3.5
3.51 ~ 3.9
3.91 ~ 5.0
5.01 ~ 7.0
7.01 ~ 10.0
10.0 ~ 30.0
30.1 ~ 45
24.0 ~ 100
80.0 ~ 160
110 ~ 250
Crystal Cut/
Oscillation Mode
SL Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT 3
rd
OT
AT 5th OT
AT 7th OT
ESR (max)
(Ohms)
5000
400
200
150
120
100
50
35
25
20
40
70
120
FREQUENCY STABILITY OVER TEMPERATURE
Operating
Temp. °C
0° to +50°
-10° to +60°
-20° to +70°
-30° to +80°
-40° to +90°
-55° to +105°
Temperature Stability (ppm)
±3
ü
ü
X
X
X
X
±5
ü
ü
ü
X
X
X
±7.5
ü
ü
ü
X
X
X
±10
ü
ü
ü
ü
X
X
±15
ü
ü
ü
ü
ü
X
±20
ü
ü
ü
ü
ü
ü
±30
ü
ü
ü
ü
ü
ü
PART NUMBER GENERATION
HC49 crystal part numbers are derived as follows:
ü
Indicates this stability is available over the stated operating temp. range
Example:
16.000MHz HC49/30/50/10/30pF/ATF
Frequency/Holder/Calibration/Temp. Stability/ Temp. Range/Circuit
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 1460 230000 Fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk
WIN7环境下,新建一个文件夹重命名为AUX,会出现错误
这是为什么呢?{:1_99:} 248495 ...
MrKingMCU 聊聊、笑笑、闹闹
请帮忙看看这个开关电源电路怎么滤波?
如题,ACDC开关电源经过LDO输出5V电压,接下在怎么滤波啊? 下面有我用的原理图和示波器采集的波形。 ...
kzero9 电源技术
LOTO课2:二极管实践 --- 桥式全波整流
实践用到的资源 4个整流二极管,500R的电阻(做负载),示波器,信号源 备注:阻值并不需要准确,这个电阻是作为负载使用的,阻值不能太大,太大的话会把电流限制到很小,可能让整流二极 ......
LOTO2018 消费电子
我想在日历控件上(MFC的DateTimePicker控件)上弹出TAH(上下文菜单,类似pc上的右键弹出菜单),请问该如何实现,能给个例子吗?
网上的例子都千篇一律的出自codeproject上一位葡萄牙工程师的论文,看了几遍都没看懂,里面很多函数参数不知从何而来.不知大哥能否给小弟指导一下?感激不尽...
yqivy 嵌入式系统
LM2596的开关电源设计
LM2596就是个经典的型号,只需要按照数据手册提供的方法就能够设计出最小系统,这里提供一个设计电路供大家参考,可以完美运行。5V输出的纹波1V左右。 对于图示电路之中,输入采用2个电容进 ......
qwqwqw2088 模拟与混合信号
MOS管的G极下拉电阻引出的问题,,,
本帖最后由 qwqwqw2088 于 2016-3-29 16:36 编辑 MOS管经常用于电路的开关控制,通过改变栅极的电压来使漏级和源级导通或截断。 下面就是一个常见的开关电路。 234986 Vg输入高时 ......
qwqwqw2088 模拟与混合信号

 
EEWorld订阅号

 
EEWorld服务号

 
汽车开发圈

 
机器人开发圈

About Us 关于我们 客户服务 联系方式 器件索引 网站地图 最新更新 手机版

站点相关: 大学堂 TI培训 Datasheet 电子工程 索引文件: 1114  591  1533  2592  256  49  30  27  37  41 

器件索引   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

北京市海淀区中关村大街18号B座15层1530室 电话:(010)82350740 邮编:100190

电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号 Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved