HC-49/U-S48000000ABKB Equivalent & Substitute Parts

Part Overview

The HC-49/U-S48000000ABKB is a 48 MHz through-hole crystal oscillator manufactured by Citizen Finedevice Co Ltd. This active product operates in 3rd overtone mode with a load capacitance of 20pF and an equivalent series resistance (ESR) of 100 Ohms. The component is housed in an HC-49/US package and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Finding equivalent or substitute parts may be necessary due to inventory constraints, supply chain considerations, or specific application requirements where alternative load capacitance values are acceptable.

Substiute Parts

HC-49/U-S48000000ABKB

Citizen Finedevice Co LtdIn Stock: 1030HC-49/U-S48000000ABKB Datasheet

Current PartRFQ

HC-49/U-S48000000ABJB

Citizen Finedevice Co LtdIn Stock: 1134HC-49/U-S48000000ABJB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the HC-49/U-S48000000ABKB is determined by the following critical parameters:

• Frequency: 48 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• ESR: 100 Ohms (exact match required)
• Operating Mode: 3rd Overtone (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -10°C ~ 60°C (exact match required)

The load capacitance parameter may vary within acceptable design margins depending on circuit implementation. The substitute part HC-49/U-S48000000ABJB maintains all critical parameters while differing only in load capacitance specification (18pF versus 20pF).

Parameter Comparison

Engineering Selection Recommendations

Both the HC-49/U-S48000000ABKB and HC-49/U-S48000000ABJB are active products from Citizen Finedevice Co Ltd with identical ROHS3 compliance and unlimited moisture sensitivity ratings. The parts are mechanically and electrically compatible in HC-49/US through-hole applications, with identical frequency, tolerance, ESR, operating mode, temperature range, and physical dimensions. The sole specification difference is load capacitance (20pF versus 18pF). Selection between these parts depends on circuit design requirements and load capacitance specifications of the application.

Frequently Asked Questions (FAQ)

Q: Can HC-49/U-S48000000ABJB replace HC-49/U-S48000000ABKB in my circuit?

A: Substitution is possible if your circuit design accommodates the 18pF load capacitance specification. Both parts share identical frequency, tolerance, ESR, operating mode, temperature range, and physical package dimensions. Verify that your circuit's load capacitance requirements are compatible with the 18pF specification before implementation.

Q: Are there physical compatibility concerns between these parts?

A: No. Both parts use the HC-49/US package with identical dimensions (0.453" L x 0.183" W, 11.50mm x 4.66mm) and maximum seated height (0.138", 4.60mm). They are direct mechanical replacements in through-hole PCB applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both HC-49/U-S48000000ABKB and HC-49/U-S48000000ABJB are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating. Both are active products with identical regulatory status.

Q: What is the primary difference between these two parts?

A: The primary difference is load capacitance: HC-49/U-S48000000ABKB specifies 20pF, while HC-49/U-S48000000ABJB specifies 18pF. All other electrical and mechanical parameters are identical.

Q: Are frequency and tolerance specifications identical?

A: Yes. Both parts operate at 48 MHz with ±30ppm frequency tolerance and ±50ppm frequency stability in 3rd overtone mode across the -10°C to 60°C operating temperature range.