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PMX307-Crystal 32.768 khz-watch Crystal 32.768 khz-Quartz Resonator 32.768 KHz

PMX307-Crystal 32.768 khz-watch Crystal 32.768 khz-Quartz Resonator 32.768 KHz

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A kHz oscillator is an electronic circuit or component that generates an oscillating signal at a frequency measured in kilohertz (kHz), which is thousands of cycles per second. Oscillators are commonly used in various electronic devices and applications to provide stable and controlled frequency signals. These use ceramic materials to create oscillations at specific frequencies.These use resistors and capacitors to generate oscillations, offering lower accuracy compared to crystal oscillators.These use inductors and capacitors to generate oscillations, often used in RF applications. These use digital gates to create a looped signal, commonly used in digital circuits. A type of LC oscillator commonly used for RF and high-frequency applications. Another type of LC oscillator also used in RF and oscillator circuits.

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Free Sample A-Crystal Quartz Resonator 32.768 KHz Crystal Oscillator、Resonator 32.768 KHz、Quartz 32.768 KHz、32.768KHz DIP Tuning Fork、12.5pf 20ppm 32.768KHz、Electronic Component Crystals 32.768KHz、32.768KHz 6pF Quartz Crystal、DIP Tuning Fork Xtal 32.768KHz、Components Resonator 32.768KHz 6pF Quartz Crystal、SMD 32.768KHz、32.768KHz Crystal 3225、Oscillator 32.768KHz、SMD Oscillator 32.768KHz、32.768KHz Crystal Oscillator.

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CRYSTAL UNIT SPECIFICATIONS

ProductCRYSTAL RESONATORS
SpecPMX307/32.768K/12.5PF/+-20PPM
A-Crystal P/NAMP3276812503E6

 

Replacement Tuning fork crystal units CM415 KHz Crystal from Citizen and

A-Crystals PMX307 and CM415 Series CITIZEN FINEDEVICE CM415 32.768KDZF-UT Crystal in 32.768 kHz, SMD, 4.1mm x 1.5mm, 12.5 pF, 20 ppm.DST410S KDS 4115 32.768K 32.768KHZ with 2pins

 

1. ELECTRICAL SPECIFICATIONS

1.1 Hold Type: PMX-307

ParameterSymbValueCondition
Frequency RangeFO32.768Khz 
Frequency Tolerance△f/fo±20PPMREF TO 25℃
Temperature CoefficientK-0.034±0.006 ppm/(℃)2 
Turnover TemperatureTTO25±5℃ 
Operating Temperature RangeTOP-20℃ to 70℃ 
Storage Temperature RangeTST-55℃ to 125℃ 
Quality FactorQ60,000TYP 
Series Rstance
R170 KΩREF TO 25℃
Shunt CapacitanceCO1.0PF TYP0.9~2.0PF
Motional CapacitanceC13.0 Ff TYP 
Load CapacitanceCL12.5PF 
Insulator ResistanceIR500 MΩDC100V±15V
Drive LevelDL0.1цW0.5Max
Capacitance ratioR450TYP 
Aging Rate△±3PPMat 25℃±3℃
 
1.2 Dimension(Unit: mm)
 
 
1.3 Reflow solder
 
 
 
 
 
2. TEST STANDARD
2.1 GENERAL ELECTRICAL CHARACTERISTICS AND VISUALTESTING
2.1.1 LOT CLASSIFICATION : If the quantity is 1000 PCS or more, 1000 PCS is one lot
2.1.2 SAMPLING TEST METHOD : MIL-STD-105E G-II
2.1.3 TEST LEVEL
A) HIGH LEVEL DEFECT : AQL 0.065% [200 pcs]
B) MEDIUM LEVEL DEFECT : AQL 0.25% [50 pcs]
C) LOW LEVEL DEFECT :AQL 0.4% [32 pcs]
2.1.4 DEFECT CLASSIFICATION
A) HIGH LEVEL
@NO FREQUENCY
@MIXING
@LEAK DEFECT
B) MEDIUM LEVEL - ELECTRICAL CHARACTERISTIC DEFECT
@FREQUENCY
@OSCILLATION
@ELECTRICAL CURRENT
@OTHER ELECTRICAL CHARACTERISTICS DEFECT
C) VISUAL
@MARKING
@WELDING
@LEADS
@OTHER VISUAL DEFECT
TESTING METHOD AND ITS STANDARD CAN BE MODIFIED DEPENDING
ON THE CUSTOMER'S REQUEST
2.2 Equivalent Circuits
 

 

3.RELIABILITY(MECHANICAL AND ENVIRONMENTAL ENDURANCE)

NO.TESTTEST METHOD AND CONDITIONREQUIREMENTS
1VIBRATION
(1)VIBRATION FREQUENCY：10 TO 60HZ
(2)VIBRATION AMPLITUDE：1.5MM
(3)CYCLE TIME：1~2MIN(10-55-10HZ)
(4)DIRECTION：X.Y.Z
(5)DURATION：2H/EACH DIRECTION
(6)G-FORCE：≥5G
FREQUENCY CHANGE:
±10PPM MAX.
RESISTANCE CHANGE:
± 15%RRMAX
2SHOCK
3 TIMES FREE DROP FROM 75CM HEIGHT TO HARD
WOODEN BOARD OF THICKNESS MORE
THAN 30MM.
FREQUENCY CHANGE:
±10PPM MAX.
RESISTANCE CHANGE:
± 15%RRMAX.
3LEAKAGE
PUT CRYSTAL UNITS INTO A HERMETIC
CONTAINER AND HELIUM FOR 0.5-0.6.
MPA,AND KEEP IT FOR 1H;CHECK THE LEAKAGE BY A
HELIUM LEAK DETECTOR.
LEAKAGE:1X10¯8MBAR.L/S
MAX.
4SOLDERABILITY
(1)DIP THE LEADS INTO FLUX(ROJIN METHANOL) FOR
3~5S.
(2)DIP THE LEADS INTO 245±5℃ 99% SN DIPPING
SOLUTION FOR 5S.
THE DIPPED PART OF THE
LEADS SHOULD HAVE
95% SN COATING.
5
SOLDERI
NG HEAT
RESISISTANCE
TEST
(1)PERFORM ELECTRICAL CHARACTERISTICS
TEST BEFORE STARTING THIS PROCEDURE.
(2)DIP THE LEADS INTO FLUX(ROJIN METHANOL)
5±0.5S.
(3)DIP THE LEADS INTO 260±5℃ 99% SN DIPPING
SOLUTION FOR 5S.
(4)TAKE THE UNIT OUT ,STORE AT ROOM
TEMPER ATURE FOR 30S THEN MEASURE THE
ELCTRICAL CHARACTERISTICS.
SHOULD PASS SEALING
AND VISUAL TEST.
FREQUENCY CHANGE:
±10PPM MAX.
6LEAK TEST
USE HELIUM LEAK DETECTOR.
BOMBING PRESSURE:5KG/CM²
BOMBING TIME: 2 HOURS
LEAK SHOULD BE LESS THAN 1E-8 ATM.CC/SEC.
GAS OR AIR SHOULD NOT
BE DETECTED.
7
HIGH
TEMPERATURE
ENDURANCE
THE CRYSTAL UNITS SHALL BE PUT IN SOMEWHERE
FOR1000 HOURS AT TEMPERATURE OF125℃±5℃,THEN KEEP IT FOR 1 TO 2 HOURS UNDER ROOM TEMPERATURE.
 
FREQUENCY CHANGE:±10PPMMAX.RESISTANCE
CHANGE:
± 15%RRMAX.
 
NO.
TEST
TEST METHOD AND CONDITION
 
CONDITION
REQUIREMENTS
8
LOW
TEMPERATURE
ENDURANCE
THE CRYSTAL UNITS SHALL BE PUT IN
SOMEWHERE FOR 1000 HOURS AT
TEMPERATURE OF -40℃,THEN KEEP IT FOR 1 TO
2 HOURS UNDER ROOM.
FREQUENCY CHANGE:
±10PPM MAX.
RESISTANCE CHANGE:
± 15%RRMAX
9
HUMIDITY
ENDURANCE
SOMEWHERE AT 40℃±5℃ IN RELATIVE
HUMIDITY OF 90%~95% FOR 72 HOURS, THEN KEEP IT
FOR ONE OR TWO HOURS UNDER ROOM
TEMPERATURE
FREQUENCY CHANGE:
±10PPM MAX.
RESISTANCE CHANGE:
± 15%RRMAX.
10
TEMPERATURE
CYCLE
TEMPERATURE SHIFT FROM LOW(-40℃) TO
HIGH(100℃,KEEP 30 MINUTES),SATISFY
HIGH(100℃) TO LOW(-40℃,KEEP 30
MINUTES),THEN GO UP TO ROOM TEMPERATURE FOR
10 CYCLES.
FREQUENCY CHANGE:
±10PPM MAX.
RESISTANCE CHANGE:
± 15%RRMAX.
11
LEAD
TENSILTY
(1)FIX THE UNIT.
(2)APPLY 2LB OF WEIGHT AXIS TO THE LESDS.
(3)TIME:5S
SHOULD PASS
SEALING AND VISUAL
TEST.
12
LEAD BENDING
(1) ATTACH 1LB OF WEIGHT TO EACH OF THE LEADS.
(2) BENDING ANGLE:90°(FROM THE NOMAL POSITION
TO 45°OPPOSTTE DIRECTION)
(3) BENDING TIME:3S(EACH DIRECTION) NUMBER OF
BENDING:2TIMES
(4) NUMBER OF BENDING:2TIMES
SHOULD PASS
SEALING AND VISUAL
TEST.
13
MARKING
ERASE
SUBMERGE THE UNIT INTO IPA[ISOPROPYL
ALCOHOL]
SOLUTION FOR 10MINUTES AND BRUSH THE
MARKING 10 TIMES WITH A TOOTH BRUSH.
MARKING SHOULD NOT
BE ERASED.
4.PACKING
4.1 Packing Method Sketch Map (Unit: mm)

 
Quantity Pcs/reelabcdef
3k/reel
12.0
5.5
4.0
1.0
1.9
3.6
4.2 Reel Dimensions (Unit: mm)

Pieces per reel
φm
φn
L
Carrier tape size
3000/reel
330±3
100min
20±1
20

4.3 Section of package

Package is made of corrugated paper with thickness of 0.8cm.Package has 10 inner boxes, each
box has 1 reel
4.3.1 Quantity of package
Per plastic reel 3000 pieces of Crystal Resonators
Per inner box 3k/reel
Per package 10 inner boxes & 10 inner boxes
（30000 pieces of Crystal Resonators）
4.3.2 Inner Box Dimensions (Unit: mm)

4.3.3 Dimensions and Mark (Unit: mm)

 
 
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A kHz oscillator is an electronic circuit or component that generates an oscillating signal at a frequency measured in kilohertz (kHz), which is thousands of cycles per second. Oscillators are commonly used in various electronic devices and applications to provide stable and controlled frequency signals. These use ceramic materials to create oscillations at specific frequencies.These use resistors and capacitors to generate oscillations, offering lower accuracy compared to crystal oscillators.These use inductors and capacitors to generate oscillations, often used in RF applications. These use digital gates to create a looped signal, commonly used in digital circuits. A type of LC oscillator commonly used for RF and high-frequency applications. Another type of LC oscillator also used in RF and oscillator circuits.

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