TXC CORPORATION 7M24020002 24 MHz Crystal Equivalent & Substitute Parts

Part Overview

The TXC CORPORATION 7M24020002 is a 24 MHz surface mount crystal oscillator with 18pF load capacitance, designed for frequency control applications requiring ±30ppm stability across the -40°C to 85°C operating temperature range. This Active product is RoHS Compliant and MSL 1 rated, suitable for high-reliability electronic assemblies. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications where the primary part number becomes unavailable or where alternative sourcing is required.

Key Parameters

Parameter	Value	Unit
Frequency	24.0000	MHz
Frequency Stability	±30	ppm
Load Capacitance	18	pF
Operating Temperature Range	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	4-SMD, No Lead	—
Size / Dimension	3.20 x 2.50	mm
RoHS Status	RoHS Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 7M24020002 is determined by strict equivalence across the following critical parameters:

Frequency: 24.0000 MHz (exact match required)
Frequency Stability: ±30ppm (exact match required)
Load Capacitance: 18pF (exact match required)
Operating Temperature Range: -40°C to 85°C (exact match required)
Package / Case: 4-SMD, No Lead (exact match required)
Mounting Type: Surface Mount (exact match required)

All identified substitute parts meet these core electrical and mechanical criteria. Variations in Equivalent Series Resistance (ESR), physical height, and packaging format (Tape & Reel vs. Cut Tape) are secondary parameters that do not prevent functional substitution when the primary criteria are satisfied. Substitute parts are sourced from manufacturers including Abracon LLC, Diodes Incorporated, Raltron Electronics, and EPSON, all maintaining Active product status and RoHS compliance.

Parameter Comparison

Parameter	7M24020002 (TXC)	ABM8-24.000MHZ-D4Y-T (Abracon)	FL2400072 (Diodes)	FL2400135Z (Diodes)	R2016-24.000-18-3030-EXT-TR (Raltron)	TSX-3225 24.0000MD30X-C3 (EPSON)
Frequency	24 MHz	24 MHz	24 MHz	24 MHz	24 MHz	24 MHz
Frequency Stability	±30ppm	±30ppm	±30ppm	±30ppm	±30ppm	±30ppm
Load Capacitance	18pF	18pF	18pF	18pF	18pF	18pF
ESR (Equivalent Series Resistance)	—	50 Ohms	60 Ohms	50 Ohms	120 Ohms	60 Ohms
Operating Temperature	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
Size / Dimension (L x W)	3.20 x 2.50 mm	3.20 x 2.50 mm	3.20 x 2.50 mm	3.20 x 2.50 mm	2.00 x 1.60 mm	3.20 x 2.50 mm
Height - Seated (Max)	0.80 mm	0.80 mm	0.75 mm	0.75 mm	0.50 mm	0.60 mm
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	Not Applicable	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and comply with RoHS regulations (RoHS Compliant or ROHS3 Compliant). Selection among substitute parts should be based on the following factors:

Dimensional Compatibility: The R2016-24.000-18-3030-EXT-TR from Raltron Electronics features a smaller footprint (2.00 x 1.60 mm) compared to the primary part and other substitutes (3.20 x 2.50 mm). This part is suitable only for applications where reduced PCB space is available and height clearance is not a constraint (0.50 mm maximum seated height).

ESR Considerations: Substitute parts exhibit ESR values ranging from 50 to 120 Ohms. The ABM8-24.000MHZ-D4Y-T (Abracon) and FL2400135Z (Diodes) both specify 50 Ohms ESR, matching the performance profile of lower-impedance oscillator circuits. The FL2400072 (Diodes) and TSX-3225 24.0000MD30X-C3 (EPSON) specify 60 Ohms ESR. The R2016-24.000-18-3030-EXT-TR specifies 120 Ohms ESR and is suitable for higher-impedance circuit designs.

Packaging Format: The R2016-24.000-18-3030-EXT-TR is supplied in Cut Tape (CT) format, while all other substitutes are supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements and volume considerations.

Inventory Availability: All substitute parts are listed as Active with confirmed stock quantities, supporting immediate procurement without lead time constraints.

Frequently Asked Questions (FAQ)

Q: Can the R2016-24.000-18-3030-EXT-TR be used as a direct replacement for the 7M24020002 in existing PCB designs?

A: The R2016-24.000-18-3030-EXT-TR meets all critical electrical parameters (24 MHz, ±30ppm, 18pF load capacitance, -40 to 85°C operating range) but features a smaller footprint (2.00 x 1.60 mm versus 3.20 x 2.50 mm). Direct PCB substitution is not possible without layout modification. This part is suitable only for new designs where the smaller package footprint is accommodated.

Q: What is the significance of ESR variation among substitute parts?

A: Equivalent Series Resistance (ESR) affects the impedance characteristics of the crystal oscillator circuit. Substitute parts range from 50 Ohms to 120 Ohms ESR. Selection should align with the oscillator circuit design specifications. Lower ESR values (50 Ohms) are suitable for standard low-impedance circuits, while higher ESR values (120 Ohms) are designed for specific high-impedance applications. Consult circuit design documentation to confirm ESR compatibility.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts are either RoHS Compliant or ROHS3 Compliant, meeting regulatory requirements for hazardous substance restrictions. The ABM8-24.000MHZ-D4Y-T specifies "Not Applicable" for Moisture Sensitivity Level, indicating alternative moisture handling protocols; all other parts specify MSL 1 (Unlimited), matching the primary part specification.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel (TR) packaging is supplied on continuous reels suitable for automated pick-and-place assembly processes at high volumes. Cut Tape (CT) packaging is supplied in shorter tape segments suitable for lower-volume manual or semi-automated assembly. The R2016-24.000-18-3030-EXT-TR is the only substitute supplied in Cut Tape format; all others are Tape & Reel.

Q: Can substitute parts be mixed within a single production batch?

A: All substitute parts meet identical electrical specifications (24 MHz, ±30ppm, 18pF, -40 to 85°C). Mixing is permissible from an electrical standpoint. However, physical dimensions and ESR variations may affect circuit performance characteristics. Confirm with circuit design and manufacturing engineering before implementing mixed-part strategies in production.

Q: What certifications apply to all substitute parts?

A: All substitute parts are REACH Unaffected and classified as EAR99 for export control purposes, matching the primary part specifications. All parts maintain Active product status with confirmed inventory availability.

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