HC49US4.000MABJ-UB

Crystal, HC49US, 4 MHz, 30 ppm, 50 ppm, 18 pF

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: CITIZEN FINEDEVICE
Product type: Crystals
Frequency Nom:4MHz; Crystal Case:Through Hole, 11.5mm x 4.65mm; Frequency Stability + / -:50ppm; Load Capacitance:18pF; Frequency Tolerance + / -:30ppm; Product Range:HC49US Series; Oper
No. of Pins: 2Pins
Frequency Nom: 4MHz
Product Range: HC49US
Crystal Mounting: Through Hole
Load Capacitance: 18pF
Crystal Frequency: 4MHz
Crystal Case / Package: Through Hole, 11.5mm x 4.65mm
Frequency Stability + / -: 50ppm
Frequency Tolerance + / -: 30ppm
Operating Temperature Max: 60°C
Operating Temperature Min: -10°C

Delivery and price
Units per pack	10000
Price	0.191 €
Current stock	10+
Lead time	30 days

Datasheet

CITIZEN. 

## AT-CUT CRYSTAL UNIT ivetat-can Type) 

## RoHS Compliant Optional 

## IH C49 U S 

## MFEATURES 

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## BDIMENSION [mm] 

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## MISTANDARD SPECIFICATIONS 

|||HC49US||Conditions|
|---|---|---|---|---|
|Nominal Frequency<br>fo||3.5MHz~30.0MHz (Fundamental)<br>30.001MHz~50.0MHz (3rd Overtone)||Needtocontactusfor<br>the available frequency|
|FrequencyTolerance||+30ppm||at25°C|
|Frequency Tolerance|||||
|overOperating<br>Af/fo<br>Temperature Range||+50ppm||—10'C~+60°C|
|OperatingTemperatureRange||—20C~+70C|||
|StorageTemperature Range||—40C~+85C|||
|Motional(series)resistance Ri|||Refertothefollowingtable||at25°C|
|Load capacitance||18.0pF||Need tospecify yourrequirement|
|Shunt capacitance||7.0pF Max.|||
|Level ofdrive||100 « W Max.|||
|InsulationResistance in|||500MQMin.||DC100V+15V|
|Aging (first year)||+5ppm Max.||25C+3C|
|MIMOTIONAL (SERIES)|RESISTANCE (R:)||||
|Frequency Range |3.5MHzSfo<4.0MHz|4.0MHzSfo<6.0MHz|6.0MHzSfo<10MHz | 10MHzSfo<14MHz | 14MHzSfo<30MHz |30MHzSfo<36MHz |36MHzSfoS50MHz|||||
|Mode<br>Fundamental | Fundamental | Fundamental | Fundamental | Fundamental | 3rd Overtone | 3rd Overtone|||||
|Ri<br>200QMax.|150QMax.|100QMax.<br>80QMax.|50QMax.|140QMax.<br>100<br>QMax.|



## MIMOTIONAL (SERIES) RESISTANCE (R:) 

22

Updated at April 22, 2026

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