ABLS-14.7456MHZ-B4H-T Crystal Equivalent & Substitute Parts

Part Overview

The ABLS-14.7456MHZ-B4H-T is a 14.7456 MHz fundamental mode crystal manufactured by Abracon LLC in HC-49/US surface mount package. This active product is designed for applications requiring precise frequency reference with 18pF load capacitance and 50 Ohms equivalent series resistance. Alternative equivalent parts may be required due to inventory availability, extended temperature range requirements, or specific frequency stability specifications for particular application environments.

Substiute Parts

ABLS-14.7456MHZ-B4H-T

Abracon LLCIn Stock: 906ABLS-14.7456MHZ-B4H-T Datasheet

Current PartRFQ

ABLS-14.7456MHZ-K4T

Abracon LLCIn Stock: 1085ABLS-14.7456MHZ-K4T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ABLS-14.7456MHZ-B4H-T is determined by the following critical parameters that must remain constant across equivalent parts:

Frequency: 14.7456 MHz (exact match required) Frequency Tolerance: ±30ppm (exact match required) Load Capacitance: 18pF (exact match required) ESR: 50 Ohms (exact match required) Operating Mode: Fundamental (exact match required) Package / Case: HC-49/US (exact match required) Mounting Type: Surface Mount (exact match required) Physical Dimensions: 0.449" L x 0.185" W, Height 0.165" max (exact match required)

The substitute part ABLS-14.7456MHZ-K4T meets all these critical parameters. Variations in frequency stability (±35ppm vs ±50ppm) and operating temperature range (-20°C ~ 70°C vs -40°C ~ 125°C) are allowable differences that do not affect mechanical or electrical substitution compatibility for the specified frequency and load characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the ABLS-14.7456MHZ-B4H-T and ABLS-14.7456MHZ-K4T are active products from Abracon LLC with identical RoHS3 and REACH compliance status. Selection between these parts is based on application-specific requirements:

The ABLS-14.7456MHZ-B4H-T operates within -20°C ~ 70°C temperature range with ±35ppm frequency stability.

The ABLS-14.7456MHZ-K4T operates within -40°C ~ 125°C temperature range with ±50ppm frequency stability, providing extended temperature capability for industrial and automotive applications.

Both parts share identical frequency, load capacitance, ESR, package dimensions, and mounting characteristics, ensuring direct mechanical and electrical interchangeability within their respective operating temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can ABLS-14.7456MHZ-K4T replace ABLS-14.7456MHZ-B4H-T in all applications?

A: Direct substitution is possible for applications operating within the -20°C ~ 70°C range. For applications requiring extended temperature operation beyond 70°C or below -20°C, the ABLS-14.7456MHZ-K4T provides -40°C ~ 125°C capability. Frequency stability differences (±35ppm vs ±50ppm) must be evaluated against circuit design tolerances.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts use HC-49/US package with identical dimensions: 0.449" L x 0.185" W (11.40mm x 4.70mm) and maximum seated height of 0.165" (4.20mm). Surface mount footprints are identical.

Q: What is the significance of frequency stability versus frequency tolerance?

A: Frequency tolerance (±30ppm for both parts) defines the initial accuracy at room temperature. Frequency stability (±35ppm for B4H-T, ±50ppm for K4T) defines the maximum frequency deviation across the operating temperature range. Both parameters must be considered for circuit design margins.

Q: Are both parts RoHS3 compliant?

A: Yes. Both ABLS-14.7456MHZ-B4H-T and ABLS-14.7456MHZ-K4T are ROHS3 Compliant and REACH Affected, meeting current environmental and regulatory requirements.

Q: What load capacitance value should be used with these crystals?

A: Both parts specify 18pF load capacitance. Circuit design must match this load capacitance value for proper frequency accuracy and oscillation characteristics.