Equivalent & Substitute Parts for HCM496000000ABIT

Part Overview

The HCM496000000ABIT is a 6 MHz fundamental mode crystal oscillator manufactured by Citizen Finedevice Co Ltd, designed for surface mount applications in the HC-49/US package. This active product features a load capacitance of 16pF with 100 Ohms equivalent series resistance and operates across the temperature range of -10°C to 60°C. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical and mechanical specifications allow direct replacement in circuit designs.

Substiute Parts

HCM496000000ABIT

Citizen Finedevice Co LtdIn Stock: 1079HCM496000000ABIT Datasheet

Current PartRFQ

HCM496000000ABJT

Citizen Finedevice Co LtdIn Stock: 22039HCM496000000ABJT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCM496000000ABIT are identified based on the following critical parameters that determine functional equivalence:

• Frequency: 6 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• ESR: 100 Ohms (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -10°C to 60°C (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Manufacturer: Citizen Finedevice Co Ltd (same manufacturer)
• Product Status: Active (current production)

The load capacitance parameter (16pF vs. 18pF) represents the primary electrical difference among parts in this substitution group. Load capacitance affects circuit tuning and frequency accuracy in the application circuit. Parts with different load capacitance values require circuit design verification to ensure proper frequency calibration.

Parameter Comparison

Engineering Selection Recommendations

Both HCM496000000ABIT and HCM496000000ABJT are active products from Citizen Finedevice Co Ltd with identical ROHS3 compliance and REACH unaffected status. Selection between these parts depends on the application circuit's load capacitance specification. The HCM496000000ABIT operates at 16pF load capacitance, while the HCM496000000ABJT operates at 18pF load capacitance. Both parts share identical frequency tolerance (±30ppm), ESR (100 Ohms), operating temperature range (-10°C to 60°C), and mechanical dimensions. The choice between these substitutes must align with the circuit design's capacitive loading requirements to maintain specified frequency accuracy.

Frequently Asked Questions (FAQ)

Q: Can HCM496000000ABJT replace HCM496000000ABIT in my circuit?

A: Direct substitution depends on your circuit's load capacitance specification. The HCM496000000ABJT has a 2pF higher load capacitance (18pF vs. 16pF). If your circuit is designed for 16pF load capacitance, using the 18pF part may shift the operating frequency. Verify your circuit design documentation for the required load capacitance value.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both HCM496000000ABIT and HCM496000000ABJT use the HC-49/US package with identical dimensions of 0.449" L x 0.185" W (11.40mm x 4.70mm) and maximum seated height of 0.169" (4.30mm). They are mechanically interchangeable from a PCB layout perspective.

Q: What is the significance of the load capacitance difference?

A: Load capacitance is the capacitance value that the crystal oscillator circuit must present to the crystal for proper frequency operation. A 2pF difference between 16pF and 18pF affects the tuning of the oscillator circuit. The crystal frequency will shift if the actual load capacitance in the circuit does not match the crystal's specified load capacitance.

Q: Do both parts have the same compliance certifications?

A: Yes. Both HCM496000000ABIT and HCM496000000ABJT are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity). They meet identical environmental and regulatory requirements.

Q: What is the frequency tolerance specification?

A: Both parts have a frequency tolerance of ±30ppm at the specified load capacitance. This tolerance defines the initial frequency accuracy of the crystal at room temperature and nominal load capacitance conditions.