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Precision Quartz Crystal Resonator KYX KST674582030 49USSSMD Model Frequency Control Component

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Precision Quartz Crystal Resonator KYX KST674582030 49USSSMD Model Frequency Control Component

Normal temperature Frequency Tolerance : ±30ppm

Frequency Stability : ±20ppm

Operating Temperature : -20℃~+70℃

Load Capacitance : 20pF

Equivalent Series Resistance(ESR) : 250Ω

Frequency : 6.7458MHz

Description : Crystal 6.7458MHz ±30ppm 20pF 250Ω HC-49S-SMD

Mfr. Part # : KST674582030

Model Number : KST674582030

Package : HC-49S-SMD

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Product Overview

This document details the specifications for the Kaiyuexiang Quartz Crystal Resonator, model 49USSSMD/6.7458MHZ. It is designed for applications requiring precise frequency control with specific electrical and mechanical parameters.

Product Attributes

Brand: Kaiyuexiang
Origin: Shenzhen, China
Product Name: Quartz Crystal Resonator
Product Model: 49USSSMD/6.7458MHZ
Original Model: KST674582030

Technical Specifications

Parameter	Value	Unit	Notes
1. GENERAL
HOLDER TYPE	49USSSMD
MODE OF VIBRATION	AT CUT		FUND S&A KH-1240
OSCILLATION MODE	FUNDAMENTAL
TEST FACILITIES
STORAGE TEMPERATURE	-40 to +85
DRIVER LEVEL	100	W
2. ELECTRICAL PARAMETER
NORMAL FREQUENCY	6.7458	MHz
FREQUENCY TOLERANCE (252)	30	ppm
TEMPERATURE STABILITY	20	ppm
OPERATING TEMPERATURE RANGE	-20 to +70
LOAD CAPACITANCE	20	PF
MOTIONAL CAPACITANCE	7	PF	MAX
SHUNT CAPACITANCE
EFFECTIVE SERIES RESISTANCE	250		MAX
INSULATION RESISTANCE	500	M OHMS	MIN AT DC 100V
3. MECHANICAL PARAMETER
SOLDERABILITY	95% COVERAGE BY USING 90/10 SOLD AT 245 FOR 5 SEC. DIPING AFTER IMMERSION IN ALPHA 611 FLUX FOR 5 SEC.
MECHANICAL ENDURANCE
SHOCK	Electrical characteristics shall be satisfied after dropping three time from the height of 50 cm onto Hard wooden board.
VIBRATION	Electrical characteristics shall be satisfied after supplying following Vibration.
VIBRATION FREQUENCY	1055	Hz	(1)
REPEATED PERIOD	12	min	(2)
FULL CYCLE	1.5	mm PP	(3)
DIRECTION	X.Y.Z		(4)
TIME	2	hours/each direction	(5)
STRENGTH OF TERMINALS/LEADWIRES
PULLING	a)Body of specimen shall be fixed, and 900g of tension weight shall be supplied gradually to axial direction of terminals/lead-wires for 30 sec. b)After above test a), there is no observation of any visual damages on the specimen.		-1
BENDING	a)Body of specimen shall be fixed, and 90degree bending shall be given, being supplied 225gs tension weight. After that, terminals/lead-wires shall be straightened gradually. Then the same bending and straightening shall be supplied to the opposite direction in the same axial. b)After above test a), there is no observation of any visual damages on the specimen.		-2
SEALING TIGHTNESS	There is no observation of gas bubble after specimen put in hot water at +90+95 for 5 min.		4
SOLDERING DIP	Terminals/lead-wires of specimen shall be dipped into solder melted tank at +2305 for 3sec. Dipping depth shall be 2mm from the bottom of specimens body. (After applying ROSIN flux) Soldering portion shall be covered in over 90% of terminals/lead-wires dipped.		5
SOLDER HEATING	Terminals/lead-wires of specimen shall be dipped into solder melted tank at +35010 for 3 sec. Electrical characteristics shall be satisfied after dipping depth shall be 2mm from edge of terminals/lead-wires.		6
ENVIRONMENTAL ENDURANCE
HUMIDITY	Electrical characteristics shall be satisfied after letting it alone at 602 in humidity of 9095% for 250 hours.		1
STORAGE IN LOW TEMPERATURE	Electrical characteristics shall be satisfied after letting it alone at -302 for 250 hours.		2
STORAGE IN HIGH TEMPERATURE	Electrical characteristics shall be satisfied after letting it alone at +852 for 250 hours.		3
TEMPERATURE CYCLE	Electrical characteristics shall be satisfied after supplying the following temperature cycle (3cycles). Temperature shift from low to high, high to low shall be done in 1/min.		4

2409272303_KYX-KST674582030_C18213276.pdf

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