ILSI HC49US Series

37 variants · ILSIAll Crystals & Oscillators →

About the ILSI HC49US Series

The ILSI HC49US Series series groups 37 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. Every variant in the range shares a common case of HC-49/US, frequency stability of ±30ppm and frequency tolerance of ±30ppm. Variants differ by ESR and frequency, so you can match the exact ESR your application requires using the selection guide below. All listed ILSI HC49US Series part numbers are active and orderable.

Select a variant by

ESR: 30 Ohms · 40 Ohms · 60 Ohms · 200 Ohms
Frequency: 3.6864 MHz · 10 MHz · 11.0592 MHz · 12 MHz · 14.31818 MHz · 14.7456 MHz · 16 MHz · 18.432 MHz · 20 MHz · 24 MHz · 25 MHz · 27 MHz

Shared specifications

Case: HC-49/US
Frequency stability: ±30ppm
Frequency tolerance: ±30ppm
Height - seated: 0.138\" (3.50mm)
Load capacitance: 18pF
Mounting: Through Hole
Operating mode: Fundamental
Operating temperature: -20°C~70°C
Package: Bulk
Ratings: -
Size (Dimension): 0.437\" L x 0.185\" W (11.10mm x 4.70mm)
Type: MHz Crystal

Variant comparison

Parameter	HC49US-FF3F18-10.000MHZ	HC49US-FF3F18-11.0592MHZ	HC49US-FF3F18-12.000MHZ	HC49US-FF3F18-14.31818MHZ	HC49US-FF3F18-14.7456MHZ	HC49US-FF3F18-16.000MHZ
ESR	60 Ohms	60 Ohms	60 Ohms	40 Ohms	40 Ohms	40 Ohms
Frequency	10 MHz	11.0592 MHz	12 MHz	14.31818 MHz	14.7456 MHz	16 MHz

Request a quote on any ILSI HC49US Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.