EEWORLDEEWORLDEEWORLD

Part Number

Search

UM-1/L21SF7.990MHZ

Description
Series - Fundamental Quartz Crystal, 7.99MHz Nom,
CategoryPassive components    Crystal/resonator   
File Size60KB,1 Pages
ManufacturerGolledge Electronics
Websitehttp://www.golledge.com/
Environmental Compliance  
Download Datasheet Parametric View All

UM-1/L21SF7.990MHZ Overview

Series - Fundamental Quartz Crystal, 7.99MHz Nom,

UM-1/L21SF7.990MHZ Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerGolledge Electronics
Reach Compliance Codecompliant
Ageing3 PPM/FIRST YEAR
Crystal/Resonator TypeSERIES - FUNDAMENTAL
Drive level100 µW
frequency stability0.002%
frequency tolerance5 ppm
Manufacturer's serial numberUM-1
Installation featuresTHROUGH HOLE MOUNT
Nominal operating frequency7.99 MHz
Maximum operating temperature60 °C
Minimum operating temperature-10 °C
physical sizeL7.8XB3.2XH8.0 (mm)/L0.307XB0.126XH0.315 (inch)
Series resistance100 Ω
surface mountNO
Base Number Matches1
Miniature Crystals
UM-1, UM-4 & UM-5
Specifications
UM-1: 8.0mm maximum height
UM-4: 4.8mm maximum height
UM-5: 6.0mm maximum height
Parameters
Package:
UM-1
UM-4
UM-5
Product
UM-1 UM-4 UM-5
Option
Code
H
Frequency range:
3.579 ~ 300MHz
10.0 ~ 300MHz
Calibration tolerance:
±5ppm
±7.5ppm
±10ppm
±20ppm
±30ppm
Other values (±3ppm ~ ±100ppm)
±5ppm
±7.5ppm
±10ppm
±20ppm
±30ppm
Other values (±3ppm ~ ±100ppm)
L
M
1
2
3
specify
L
M
1
2
3
specify
0
1
2
3
4
specify
B
D
F
J
S
specify
F
3
5
7
0.35Ø
12.00
(min)
ACTUAL SIZE
Temperature stability:
3.75
Package
3.20
(max)
7.80
UM-1
UM-4
UM-5
Height H
8.00 max
4.80 max
6.00 max
Scale 2:1
Slim case (2.6mm thick is available as an option over 20.0MHz. Contact our sales office for
details.
Features
Operating temperature range:
0 to +50°C
-10 to +60°C
-20 to +70°C
-30 to +80°C
-40 to +85°C
Other values
Circuit condition:
12pF
16pF
20pF
30pF
Series resonant
Other values
Fundamental
3rd overtone
5th overtone
7th overtone
7pF max
«
«
«
«
Ideal for custom frequencies & specifications
Wide frequency range
Tight specifications available
Fundamental mode up to 55.0MHz
Oscillation mode:
ESR Values
The table shows the maximum ESR values in ohms for each
package across the available frequency range.
Frequency
3.5 ~ 4.99
5.0 ~ 5.99
6.0 ~ 6.99
7.0 ~ 7.99
8.0 ~ 9.99
10.0 ~ 15.9
16.0 ~ 55.0
30.0 ~ 49.9
50.0 ~ 100
60.0 ~ 150
130 ~ 300
Mode
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
3rd overtone
3rd overtone
5th overtone
7th overtone
UM-1
200
150
120
100
90
40
30
45
60
90
150
UM-4
-
-
-
-
-
60
40
50
60
120
150
UM-5
-
-
-
-
-
60
40
50
60
120
150
Static capacitance (C
0
):
Equivalent series resistance (max):
see table
Ageing:
±3ppm max first year
100µW
Test drive level:
Standard.
Optional - Please specify required code(s) when ordering
Ordering Information
Product name + option codes + frequency
eg:
UM-1/231JF 24.576MHz
20/30/10/30-F
Insulating washers and mounting clips available. See our website
for details.
Some combinations of stability and temperature range may not be
available. Please check with us before ordering.
Tel:
+44 1460 256 100
19 Jul 2002
Fax:
+44 1460 256 101
E-mail:
sales@golledge.com
Web:
www.golledge.com
The internal crystal oscillator is changed to an external crystal oscillator. The timer interrupt is fine, but the information sent by the serial port cannot be received outside. High score solution
void UART0Init(void) { unsigned char SFRPAGE_SAVE = SFRPAGE; // Save Current SFR page SFRPAGE = 0x00; SSTA0 = 0x1a; // Disable baud rate division by 2, CLOCK OF UART0 IS TIMER3 SCON0 = 0x50; // 8 bit ...
s_o_s0 Embedded System
[TI DLP Creative Collection] + Watching Shadow Play with DLP
皮影又叫灯影,影子戏,是世界上保存下来非常古老、比较系统完整的戏曲艺术! 利用了光学投影原理,很早前用青油灯点亮发光,有了电后改用灯泡。“ 一口道尽千古事 ,双手挥动百万兵”用这两句话可以概括皮影的精髓,同时 也体现了老艺人们的高超水平!陕西关中东路皮影有华县碗碗腔,华阴老腔;中路皮影乾县的弦板腔; 西路的扶风县、岐山县皮影以传统的秦腔来演唱。利用德州仪器的DLP投影设备把传统皮影和现代科技结合起...
大秦正声 TI Technology Forum
Questions about TPS65090 power management chip selection
[i=s]This post was last edited by qwqwqw2088 on 2018-11-5 07:41[/i] [size=4][b]Question 1:[/b][/size] [size=4]Hello, TI engineer! I am working on a portable instrument recently and I am a little confu...
qwqwqw2088 Analogue and Mixed Signal
Looking for burning software that supports MSP430F5
Looking for a flashing software that supports MSP430F5, thank you very much~:carnation:...
wncjesse Microcontroller MCU
VK1621B/VK1622 is a perfect replacement for HT1621B/HT1622, and is compatible with all packaged chips, die, wafers, bonding COB chips, etc.
[align=left]Product model: VK1621B[/align][align=left]Product brand: VINTE/VINKA/Yuantai[/align][align=left]Package: LQFP48 LQFP44 SSOP48DIP28 DICE/Bare chip COB Bonding chip Custom COG[/align][align=...
道德主义者 Microcontroller MCU
Those who have played with the voice chip isd1420, please come and share your programming experience
The isd1420 voice chip can be programmed to achieve segmented recording and playback, loop playback and other functions. I programmed it today, but only achieved the segmented recording function. How ...
xiaodage Embedded System

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2079  1480  2427  4  2921  42  30  49  1  59 
Datasheet   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
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 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