Surface mount quartz crystal unit SJK 7U54000E10UCG ceramic package 54 MHz frequency tolerance 10 ppm max

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Product Description

Product Overview

The QUARTZ CRYSTAL UNIT SERIES 7U is a seam-sealed ceramic surface mount package measuring 3.2*2.5mm. It is designed for applications requiring precise frequency control and offers a robust solution with its reliable construction and adherence to various environmental standards.

Product Attributes

Brand: SJK
Origin: Shenzhen, China
Material: Ceramic
Certifications: RoHS, REACH, HF
Package Type: 3.2*2.5mm Surface Mount
Minimum Packaging: 3000pcs/reel
Moisture Sensitivity Level: Level 1

Technical Specifications

Parameter	Specification
Output Frequency	54.000000MHz
Vibration Mode	AT/Fundamental
Frequency Tolerance (@ 25C)	10 ppm max
Load Capacitance (CL)	10.0 PF
Frequency Stability Over Operating Temperature	10ppm max / -20 C to +70 C; 30ppm max/ -40 C to +85 C
Operating Temperature Range	-40 C to +85 C
Storage Temperature Range	-40 C to +125 C
Shunt Capacitance (C0)	3.0 PF Max
Driver Level (Typical)	10W
Equivalent Series Resistance (ESR)	40 Max
Aging @ 25C (1st year Max)	3ppm/year
Testing Conditions (Standard)	Ambient temperature: 255, Relative humidity: 40%~70%
Measurement Equipment	S&A250B or equivalent

Reliability Test Specification

No.	Test Item	Test Condition	Standard Requirement
1	Drop	From a height of 55cm, free fall onto a wooden board, 3 consecutive times	Frequency change within 5ppm, resistance change within 15% before and after test
2	Vibration	Frequency: 10~55Hz, Amplitude: 1.5mm, Time: 2 hours per direction (X, Y, Z)	Frequency change within 5ppm, resistance change within 15% before and after test
3	Thermal Shock	25 cycles of high and low temperature in a test chamber. Low temp: -403 for 30 min, High temp: 852 for 30 min. Temp change every 3 minutes.	Frequency change within 5ppm, resistance change within 15% before and after test
4	Hermeticity	Helium pressure: 50.5Kg/cm, Helium pressurization time: 120 minutes	Leak rate: 110-9Pa.m3/s
5	Resistance to Soldering Heat	Wave crest temperature: 260C10C, Time: 155 seconds	Frequency change within 5ppm, resistance change within 15% before and after test
6	Solderability Test	Temperature: 260C10C, Immersion time: 31 seconds	Solder coverage of pins 90%
7	High Temperature and Humidity	Temperature: 60C2C, Humidity: 90%~95%, Duration: 240 hours	1. Frequency change within 5ppm, resistance change within 15% before and after test. 2. Product surface shall not be rusted.
8	High Temperature Test	Temperature: 85C2C, Duration: 240 hours	Frequency change within 5ppm, resistance change within 15% before and after test
9	Low Temperature Test	Temperature: -40C2C, Duration: 240 hours	Frequency change within 5ppm, resistance change within 15% before and after test
10	Life Test	Voltage: 5V, Temperature: 25, Duration: 1000 hours	Frequency change within 5ppm, resistance change within 15% before and after test