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
Series
Packaging
ECS Crystals 25.000MHZ 18pF 100 ppm -40 C +85C
Datasheet
1.130In 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
434In Stock
600Expected 8/4/2026
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 28.63636MHz 18pF 50ppm -40C +85C
Datasheet
1.087In 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
Min.: 1
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
1.264In Stock
1.800Expected 11/3/2026
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
Mult.: 1

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
1.398In 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
233In 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 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
1.128In Stock
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
192In 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
206In 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
548In 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
686In 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
662In 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
499In 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 20.000 MHz 20 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS
Datasheet
611In Stock
Min.: 1
Mult.: 1

20 MHz 20 pF 30 PPM 50 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
220In 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 8MHZ 18pF 10ppm 10ppm -20C - 70C
Datasheet
2.209In Stock
Min.: 1
Mult.: 1

8 MHz 18 pF 10 PPM 10 PPM HC-49/USX - 20 C + 70 C Radial 80 Ohms 500 uW 11.35 mm 5 mm 3.5 mm HC-49USX Bulk
ECS Crystals CRYSTAL 12MHZ 18pF 10ppm 10ppm -20C - 70C
Datasheet
2.773In Stock
Min.: 1
Mult.: 1

12 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 20MHZ 18pF 10ppm 10ppm -20C - 70C
Datasheet
554In Stock
600On Order
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
ECS Crystals 10MHz 18pF
Datasheet
1.005In Stock
1.800Expected 8/18/2026
Min.: 1
Mult.: 1

10 MHz 18 pF 30 PPM 50 PPM HC-49/US - 10 C + 70 C Radial 60 Ohms 500 uW 11.35 mm 4.65 mm 3.5 mm 3.2 mm HCS-49USX Bulk