HC-49USX Low-Profile Quartz Crystals

ECS HC-49USX Low-Profile Quartz Crystals are cost-effective, lead-free, and RoHS-compliant crystals with a maximum height of 3.5mm. The HC-49USX thru-hole mount, resistance weld-type crystals have an operating temperature range of -10°C to +70°C. The HC-49USX-DN series features an industrial temperature range of -40°C to +85°C. ECS HC-49USX Low-Profile Quartz Crystals feature a frequency range between 3.57MHz and 70MHz.

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Qty. RoHS ECAD Model Frequency
Load Capacitance
Tolerance
Frequency Stability
Package/Case
Minimum Operating Temperature
Maximum Operating Temperature
Termination Style
ESR
Drive Level
Length
Width
Height
Diameter
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ECS Crystals 25.000MHZ 18pF 100 ppm -40 C +85C
Datasheet
1,209In Stock
Min.: 1
Mult.: 1

25 MHz 18 pF 30 PPM 50 PPM HC-49 - 40 C + 85 C Radial 30 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals 25.000MHZ 20pF 100 ppm -40 C +85C
Datasheet
284In Stock
Min.: 1
Mult.: 1

25 MHz 20 pF 30 PPM 100 PPM HC-49/USX - 40 C + 85 C Radial 30 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals 28.224MHz 18pF 50ppm -40C +85C
Datasheet
372In Stock
Min.: 1
Mult.: 1

28.224 MHz 18 pF 50 PPM 50 PPM - 40 C + 85 C Radial 30 Ohms 500 uW 3.5 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals 28.63636MHz 18pF 50ppm -40C +85C
Datasheet
107In Stock
Min.: 1
Mult.: 1

28.63636 MHz 18 pF 30 PPM 50 PPM HC-49/USX - 40 C + 85 C Radial 100 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals CRYSTAL 3.579545MHZ 18PF T/H,HC-49USX,50ppm,30ppm,18pF,200 Ohm,Fundamental,-40C - 85C,HC49/US,0.447" L x 0.183" W (11.35mm x 4.65mm),0.138" (3.50mm)
Datasheet
231In Stock
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Mult.: 1

3.579545 MHz 18 pF 30 PPM 50 PPM - 40 C + 85 C Radial 200 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk

ECS Crystals 4MHz 18pF -10C +70C
Datasheet
1,870In Stock
Min.: 1
Mult.: 1

4 MHz 18 pF 30 PPM 50 PPM HC-49/US - 40 C + 85 C Radial 150 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals 40MHz 18pF 50ppm -40C +85C
Datasheet
176In Stock
Min.: 1
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40 MHz 18 pF 30 PPM 50 PPM HC-49/USX - 40 C + 85 C Radial 100 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk

ECS Crystals 4.194304MHz 18pF -10C +70C
Datasheet
1,399In Stock
Min.: 1
Mult.: 1

4.194304 MHz 18 pF 30 PPM 50 PPM HC-49/US - 40 C + 85 C Radial 150 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals CRYSTAL 4.9152MHZ 18PF T/H,HC-49USX,50ppm,30ppm,18pF,150 Ohm,Fundamental,-40C - 85C,HC49/US,0.447" L x 0.183" W (11.35mm x 4.65mm),0.138" (3.50mm)
Datasheet
148In Stock
Min.: 1
Mult.: 1

4.9152 MHz 18 pF 30 PPM 50 PPM - 40 C + 85 C Radial 150 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk

ECS Crystals 5MHz 18pF -10C +70C
Datasheet
321In Stock
Min.: 1
Mult.: 1

5 MHz 18 pF 30 PPM 50 PPM HC-49/US - 40 C + 85 C Radial 120 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals 50MHz 18pF 50ppm -40C +85C
Datasheet
638In Stock
Min.: 1
Mult.: 1

50 MHz 18 pF 30 PPM 50 PPM - 40 C + 85 C Radial 100 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals CRYSTAL 6.0000MHZ 18PF T/H,HC-49USX,50ppm,30ppm,18pF,100 Ohm,Fundamental,-40C - 85C,HC49/US,0.447" L x 0.183" W (11.35mm x 4.65mm),0.138" (3.50mm)
Datasheet
128In Stock
1,000Expected 09/06/2026
Min.: 1
Mult.: 1

6 MHz 18 pF 30 PPM 50 PPM - 40 C + 85 C Radial 100 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals 6.144MHz 18pF 50ppm -40C +85C
Datasheet
13In Stock
Min.: 1
Mult.: 1

6.144 MHz 18 pF 30 PPM 50 PPM HC-49/USX - 40 C + 85 C Radial 100 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals CRYSTAL 7.3728MHZ 18PF T/H,HC-49USX,50ppm,30ppm,18pF,80 Ohm,Fundamental,-40C - 85C,HC49/US,0.447" L x 0.183" W (11.35mm x 4.65mm),0.138" (3.50mm)
Datasheet
222In Stock
Min.: 1
Mult.: 1

7.3728 MHz 18 pF 30 PPM 50 PPM - 40 C + 85 C Radial 80 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals 9MHz 18pF 50ppm -40C +85C
Datasheet
1,062In Stock
Min.: 1
Mult.: 1

9 MHz 18 pF 30 PPM 50 PPM HC-49/USX - 40 C + 85 C Radial 60 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals 9.2160MHz 18pF -10C +70C
Datasheet
208In Stock
Min.: 1
Mult.: 1

9.216 MHz 18 pF 30 PPM 50 PPM 11.35 mm x 4.65 mm - 40 C + 85 C Radial 60 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm HCS-49USX Bulk
ECS Crystals HC-49USX, 11.0592MHz, 20pF, +/-30ppm, +/-50ppm, -40C +85 C, RoHS
Datasheet
380In Stock
Min.: 1
Mult.: 1
: 200

11.0592 MHz 20 pF 30 PPM 50 PPM 11.35 mm x 3.5 mm - 40 C + 85 C Radial 40 Ohms 500 uW 11.35 mm 5 mm 3.5 mm Reel, Cut Tape
ECS Crystals 16.000 MHz 12 pF HC-49USX +/-30/30 ppm -20 - +70C RoHS
Datasheet
550In Stock
Min.: 1
Mult.: 1

16 MHz 12 pF 30 PPM 30 PPM 11.35 mm x 4.65 mm - 20 C + 70 C Radial 40 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm Bulk
ECS Crystals 16.000 MHz 18 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS
Datasheet
700In Stock
Min.: 1
Mult.: 1

16 MHz 18 pF 30 PPM 50 PPM 11.35 mm x 4.65 mm - 20 C + 70 C Radial 40 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm Bulk
ECS Crystals 16.000 MHz 20 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS
Datasheet
762In Stock
Min.: 1
Mult.: 1

16 MHz 20 pF 30 PPM 50 PPM 11.35 mm x 4.65 mm - 20 C + 70 C Radial 40 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm Bulk
ECS Crystals 20.000 MHz 18 pF HC-49USX +/-30/30 ppm -20 - +70C RoHS
Datasheet
511In Stock
Min.: 1
Mult.: 1

20 MHz 18 pF 30 PPM 30 PPM 11.35 mm x 4.65 mm - 20 C + 70 C Radial 30 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm Bulk
ECS Crystals HC-49USX, 4MHz, 18pF, +/-30ppm, +/-50ppm, -10C +70 C, RoHS
Datasheet
230In Stock
Min.: 1
Mult.: 1
: 200

4 MHz 18 pF 30 PPM 50 PPM 11.35 mm x 3.5 mm - 10 C + 70 C Radial 150 Ohms 500 uW 11.35 mm 3.5 mm 3.5 mm Reel, Cut Tape
ECS Crystals CRYSTAL 10MHZ 18pF 10ppm 10ppm -20C - 70C
Datasheet
781In Stock
Min.: 1
Mult.: 1

10 MHz 18 pF 10 PPM 10 PPM HC-49/USX - 20 C + 70 C Radial 60 Ohms 500 uW 11.35 mm 5 mm 3.5 mm HC-49USX Bulk
ECS Crystals CRYSTAL 16MHZ 18pF 10ppm 10ppm -20C - 70C
Datasheet
586In Stock
Min.: 1
Mult.: 1

16 MHz 18 pF 10 PPM 10 PPM HC-49/USX - 20 C + 70 C Radial 40 Ohms 500 uW 11.35 mm 5 mm 3.5 mm HC-49USX Bulk
ECS Crystals CRYSTAL 20MHZ 18pF 10ppm 10ppm -20C - 70C
Datasheet
189In Stock
1,000Expected 21/07/2026
Min.: 1
Mult.: 1

20 MHz 18 pF 10 PPM 10 PPM HC-49/USX - 20 C + 70 C Radial 30 Ohms 500 uW 11.35 mm 5 mm 3.5 mm HC-49USX Bulk