7M-24.000MDHV-T Equivalent & Substitute Parts Reference

Part Overview

The 7M-24.000MDHV-T is a 24 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION. This surface mount device operates across the industrial temperature range of -40°C to 85°C and is specified for 8pF load capacitance with 60 Ohms equivalent series resistance. The part is Active status and RoHS Compliant, making it suitable for current production applications. Substitute parts are identified when inventory constraints, lead time requirements, or design flexibility necessitate alternative sourcing while maintaining electrical and mechanical compatibility within specified parameters.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Frequency	24.0000	MHz	Critical - Must match exactly
Frequency Tolerance	±20	ppm	Critical - Must match or be tighter
Load Capacitance	8	pF	Critical - Determines circuit compatibility
ESR (Equivalent Series Resistance)	60	Ohms	Important - Affects oscillator startup and stability
Operating Temperature Range	-40 to 85	°C	Critical - Must cover application range
Package Type	4-SMD, No Lead	—	Critical - Must be surface mount compatible
Mounting Type	Surface Mount	—	Critical - PCB assembly compatibility
RoHS Status	RoHS Compliant	—	Important - Regulatory compliance

Substitute Part Grouping Explanation

Substitution eligibility for the 7M-24.000MDHV-T is determined by the following mandatory parameters:

Critical Matching Parameters:

Frequency: 24 MHz (exact match required)
Frequency Tolerance: ±20 ppm (substitute must meet or exceed this specification)
Operating Temperature Range: -40°C to 85°C (minimum coverage required)
Package Type: 4-SMD, No Lead (physical and electrical interface compatibility)
Mounting Type: Surface Mount (assembly process compatibility)

Allowable Variation Parameters:

Load Capacitance: Substitutes with 10 pF load capacitance are acceptable when the oscillator circuit design accommodates higher load capacitance values
ESR: Substitutes with ESR values between 60 and 120 Ohms are acceptable; higher ESR values remain within acceptable oscillator performance margins for this frequency class
Physical Dimensions: Minor variations in length, width, and height are acceptable provided the 4-SMD, No Lead package footprint remains compatible with standard PCB layouts
RoHS Status: ROHS3 Compliant substitutes are acceptable as they meet or exceed RoHS Compliant requirements

The three identified substitute parts meet all critical parameters and fall within allowable variation ranges for load capacitance and ESR.

Parameter Comparison

Parameter	7M-24.000MDHV-T (TXC)	ABM10-24.000MHZ-D30-T3 (Abracon)	ECS-240-10-36-JGN-TR (ECS Inc.)	IXA12-HF5F10-24.000MHZ (ILSI)
Manufacturer	TXC CORPORATION	Abracon LLC	ECS Inc.	ILSI
Frequency	24 MHz	24 MHz	24 MHz	24 MHz
Frequency Tolerance	±20 ppm	±20 ppm	±20 ppm	±20 ppm
Frequency Stability	±30 ppm	±30 ppm	±30 ppm	±30 ppm
Load Capacitance	8 pF	10 pF	10 pF	10 pF
ESR	60 Ohms	100 Ohms	60 Ohms	120 Ohms
Operating Mode	Fundamental	Fundamental	Fundamental	Fundamental
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Package / Case	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Size (L x W)	3.20 x 2.50 mm	2.50 x 2.00 mm	2.50 x 2.00 mm	2.00 x 1.60 mm
Height (Max)	0.80 mm	0.70 mm	0.65 mm	0.55 mm
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	Not Applicable	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active
Inventory (Pcs)	1011	9361	7915	3839

Engineering Selection Recommendations

Primary Selection (7M-24.000MDHV-T): Select the original TXC part when 8 pF load capacitance is a design requirement and inventory is available. This part carries Active product status and RoHS Compliant certification. The 60 Ohms ESR and 8 pF load capacitance represent the baseline specification for this application.

Substitute Selection Criteria:

ECS-240-10-36-JGN-TR (ECS Inc.): This substitute is preferred when load capacitance tolerance permits 10 pF operation. It maintains the 60 Ohms ESR specification identical to the primary part, minimizing oscillator circuit redesign. ROHS3 Compliant status and Active product status ensure regulatory and supply chain continuity. Smaller physical dimensions (2.50 x 2.00 mm) provide PCB layout flexibility.

ABM10-24.000MHZ-D30-T3 (Abracon LLC): This substitute is acceptable when 10 pF load capacitance is compatible with the oscillator circuit design. The 100 Ohms ESR is within acceptable operating margins for 24 MHz fundamental mode crystals. Highest inventory availability (9361 Pcs) supports extended production runs. ROHS3 Compliant and Active status confirm regulatory compliance. Smaller package footprint (2.50 x 2.00 mm) matches ECS substitute dimensions.

IXA12-HF5F10-24.000MHZ (ILSI): This substitute is acceptable when 10 pF load capacitance is compatible with the oscillator circuit design. The 120 Ohms ESR remains within acceptable operating parameters for this frequency class. AEC-Q200 automotive qualification provides additional reliability assurance for demanding applications. ROHS3 Compliant and Active status confirm regulatory compliance. Smallest physical dimensions (2.00 x 1.60 mm) enable high-density PCB layouts.

Substitution Constraints: All substitutes require oscillator circuit verification when load capacitance changes from 8 pF to 10 pF. ESR variations up to 120 Ohms do not require circuit redesign for fundamental mode 24 MHz operation at this frequency class. All substitutes maintain identical frequency, tolerance, temperature range, and package type specifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 7M-24.000MDHV-T with a 10 pF load capacitance part?

A: Yes, provided the oscillator circuit design accommodates 10 pF load capacitance. All three substitute parts (ABM10-24.000MHZ-D30-T3, ECS-240-10-36-JGN-TR, and IXA12-HF5F10-24.000MHZ) operate at 10 pF load capacitance. Circuit verification is required to confirm oscillator startup and frequency stability with the higher load capacitance value.

Q: What is the impact of ESR differences between the main part and substitutes?

A: The main part specifies 60 Ohms ESR. Substitutes range from 60 to 120 Ohms ESR. For 24 MHz fundamental mode crystals, ESR values up to 120 Ohms remain within acceptable operating margins. Higher ESR values increase power consumption in the oscillator circuit but do not prevent normal operation at this frequency class. No circuit redesign is required for ESR variations within this range.

Q: Are all substitute parts RoHS compliant?

A: Yes. The main part is RoHS Compliant. All three substitutes are ROHS3 Compliant, which meets or exceeds RoHS Compliant requirements. ROHS3 Compliant status confirms compliance with current RoHS regulations and supports regulatory requirements for current production applications.

Q: Do the physical dimension differences affect PCB assembly?

A: All parts use 4-SMD, No Lead package type with identical electrical footprints. Physical dimension variations (length, width, height) do not affect PCB assembly compatibility. Smaller substitute parts (ECS and Abracon at 2.50 x 2.00 mm, ILSI at 2.00 x 1.60 mm) provide layout flexibility compared to the main part (3.20 x 2.50 mm) but require no design changes.

Q: Which substitute part should I select for highest inventory availability?

A: ABM10-24.000MHZ-D30-T3 (Abracon LLC) provides the highest inventory availability at 9361 Pcs. ECS-240-10-36-JGN-TR (ECS Inc.) provides 7915 Pcs. IXA12-HF5F10-24.000MHZ (ILSI) provides 3839 Pcs. Inventory levels support extended production requirements across all three substitutes.

Q: Can I use the IXA12-HF5F10-24.000MHZ in automotive applications?

A: Yes. The IXA12-HF5F10-24.000MHZ carries AEC-Q200 automotive qualification, which certifies reliability for automotive temperature and environmental conditions. This part is suitable for automotive applications requiring 24 MHz crystal oscillators with 10 pF load capacitance.

Q: What is the difference between the main part's MSL rating and the substitute parts?

A: The main part (7M-24.000MDHV-T) and two substitutes (ECS-240-10-36-JGN-TR and IXA12-HF5F10-24.000MHZ) carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. The ABM10-24.000MHZ-D30-T3 carries Not Applicable MSL rating. Both ratings support standard PCB assembly processes without special moisture control requirements.

Q: Must I redesign the oscillator circuit to use a substitute part?

A: Circuit verification is required when changing from 8 pF to 10 pF load capacitance. ESR variations within the specified range (60 to 120 Ohms) do not require circuit redesign. Frequency, tolerance, temperature range, and operating mode remain identical across all parts, supporting direct substitution after load capacitance compatibility is confirmed.

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