7M24070019 24 MHz ±10ppm Crystal 10pF SMD Equivalent & Substitute Parts

Part Overview

The 7M24070019 is a 24 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION in the 7M series. This surface mount device operates at 24.0000 MHz with ±10ppm frequency stability and 10pF load capacitance, housed in a 4-SMD no-lead package measuring 3.20mm × 2.50mm. The part is RoHS compliant, MSL 1 rated, and currently active in production with 1159 units in stock. Substitute parts are necessary when primary inventory is unavailable, when alternative ESR (Equivalent Series Resistance) characteristics are required for specific circuit designs, or when different package dimensions better suit application constraints.

Key Parameters

Parameter	Value	Unit
Frequency	24.0000	MHz
Frequency Stability	±10	ppm
Frequency Tolerance	±10	ppm
Load Capacitance	10	pF
Operating Mode	Fundamental	—
Operating Temperature Range	-20 to +70	°C
Mounting Type	Surface Mount	—
Package / Case	4-SMD, No Lead	—
RoHS Status	RoHS Compliant	—
MSL Rating	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the 7M24070019 is determined by the following critical parameters:

Primary Matching Criteria (Mandatory):

Frequency: 24.0000 MHz (exact match required)
Frequency Stability: ±10ppm (exact match required)
Load Capacitance: 10pF (exact match required)
Operating Temperature Range: -20°C to +70°C (exact match required)
Mounting Type: Surface Mount (exact match required)
Package / Case: 4-SMD, No Lead (exact match required)

Secondary Compatibility Factors:

ESR (Equivalent Series Resistance): Varies among substitutes (40 to 100 Ohms); circuit design determines acceptable range
Physical Dimensions: Substitutes may vary in length, width, and height while maintaining 4-SMD no-lead form factor
Operating Mode: All substitutes operate in Fundamental mode
RoHS / REACH Compliance: All substitutes maintain compliance status

Parts meeting all primary criteria are electrically equivalent. ESR variations affect circuit impedance matching and startup characteristics but do not prevent functional substitution when circuit design accommodates the specified ESR range.

Parameter Comparison

Part Number	Manufacturer	Frequency (MHz)	Stability (ppm)	Load Cap (pF)	ESR (Ohms)	Temp Range (°C)	Package	Size L×W (mm)	Height (mm)	Inventory
7M24070019	TXC CORPORATION	24.0000	±10	10	—	-20 to +70	4-SMD, No Lead	3.20 × 2.50	0.80	1159
7M-24.000MEEQ-T	TXC CORPORATION	24.0000	±10	10	60	-20 to +70	4-SMD, No Lead	3.20 × 2.50	0.80	19162
402F24011CAR	CTS-Frequency Controls	24.0000	±10	10	100	-20 to +70	4-SMD, No Lead	2.00 × 1.60	0.55	3456
403C11A24M00000	CTS-Frequency Controls	24.0000	±10	10	60	-20 to +70	4-SMD, No Lead	3.20 × 2.50	0.80	44699
ABM10W-24.0000MHZ-8-B1U-T3	Abracon LLC	24.0000	±10	8	50	-20 to +70	4-SMD, No Lead	2.50 × 2.00	0.60	27792
ABM11W-24.0000MHZ-7-B1U-T3	Abracon LLC	24.0000	±10	7	50	-20 to +70	4-SMD, No Lead	2.00 × 1.60	0.50	5099
ABM11W-24.0000MHZ-8-B1U-T3	Abracon LLC	24.0000	±10	8	50	-20 to +70	4-SMD, No Lead	2.00 × 1.60	0.50	2061
ABM8-24.000MHZ-10-B1U-T	Abracon LLC	24.0000	±10	10	50	-20 to +70	4-SMD, No Lead	3.20 × 2.50	0.80	4870
ABM8-24.000MHZ-10-R40-B1U-T	Abracon LLC	24.0000	±10	10	40	-20 to +70	4-SMD, No Lead	3.20 × 2.50	0.80	1722
CS00561-24M	NDK America, Inc.	24.0000	±10	10	100	-20 to +70	4-SMD, No Lead	2.50 × 2.00	0.65	11419
CS11339-24M	NDK America, Inc.	24.0000	±10	8	60	-20 to +70	4-SMD, No Lead	2.50 × 2.00	0.55	62981

Engineering Selection Recommendations

Direct Electrical Equivalents (10pF Load Capacitance):

The following parts are direct electrical substitutes for the 7M24070019, matching all primary electrical parameters:

7M-24.000MEEQ-T (TXC CORPORATION): Identical frequency, stability, load capacitance, and package dimensions. ESR 60 Ohms. Highest inventory availability (19162 units). RoHS compliant, MSL 1.
403C11A24M00000 (CTS-Frequency Controls): Identical frequency, stability, load capacitance, and package dimensions. ESR 60 Ohms. Largest inventory (44699 units). ROHS3 compliant, MSL 1.
ABM8-24.000MHZ-10-B1U-T (Abracon LLC): Identical frequency, stability, load capacitance, and package dimensions. ESR 50 Ohms. ROHS3 compliant, MSL not applicable.
ABM8-24.000MHZ-10-R40-B1U-T (Abracon LLC): Identical frequency, stability, load capacitance, and package dimensions. ESR 40 Ohms (lowest). ROHS3 compliant, MSL not applicable.
CS00561-24M (NDK America, Inc.): Identical frequency, stability, and load capacitance. Smaller package (2.50mm × 2.00mm). ESR 100 Ohms. RoHS compliant, MSL 1.

Alternative Load Capacitance Options (8pF):

The following parts operate at 24 MHz ±10ppm but with 8pF load capacitance. These require circuit design verification to confirm compatibility:

ABM10W-24.0000MHZ-8-B1U-T3 (Abracon LLC): 8pF load capacitance, ESR 50 Ohms, smaller package (2.50mm × 2.00mm × 0.60mm height).
ABM11W-24.0000MHZ-8-B1U-T3 (Abracon LLC): 8pF load capacitance, ESR 50 Ohms, compact package (2.00mm × 1.60mm × 0.50mm height).
CS11339-24M (NDK America, Inc.): 8pF load capacitance, ESR 60 Ohms, compact package (2.50mm × 2.00mm × 0.55mm height). Highest inventory (62981 units).

Alternative Load Capacitance Option (7pF):

ABM11W-24.0000MHZ-7-B1U-T3 (Abracon LLC): 7pF load capacitance, ESR 50 Ohms, compact package (2.00mm × 1.60mm × 0.50mm height).

Compact Package Alternatives:

Parts with reduced physical dimensions (2.00mm × 1.60mm or 2.50mm × 2.00mm) are available from CTS-Frequency Controls and Abracon LLC. These maintain electrical specifications but require PCB layout verification for space-constrained applications.

ESR Considerations:

ESR values range from 40 to 100 Ohms across substitutes. Lower ESR (40-50 Ohms) reduces startup time and power consumption. Higher ESR (100 Ohms) may require circuit design adjustment. Verify circuit specifications before selecting parts with ESR outside the original design range.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 24 MHz 8pF crystal for the 10pF 7M24070019?

A: Load capacitance is a primary matching criterion. Substitution with 8pF or 7pF parts requires circuit design verification. The oscillator circuit must be tuned for the alternative load capacitance value. Direct substitution without circuit modification is not recommended.

Q: What is ESR and how does it affect substitution?

A: ESR (Equivalent Series Resistance) represents the crystal's internal resistance. The 7M24070019 does not specify ESR; substitutes range from 40 to 100 Ohms. Lower ESR improves startup characteristics and reduces power consumption. Higher ESR may increase startup time. Verify your circuit design accommodates the substitute's ESR value.

Q: Are all listed substitutes pin-compatible?

A: All substitutes use 4-SMD no-lead packages with identical pinout. Physical dimensions vary; verify PCB footprint compatibility before assembly. Compact packages (2.00mm × 1.60mm) require smaller PCB pads than the standard 3.20mm × 2.50mm package.

Q: Which substitute has the best inventory availability?

A: The 403C11A24M00000 (CTS-Frequency Controls) offers the highest inventory with 44699 units in stock. The CS11339-24M (NDK America, Inc.) provides 62981 units but operates at 8pF load capacitance.

Q: Do all substitutes meet RoHS compliance?

A: Yes. All listed substitutes are RoHS compliant (RoHS or ROHS3). The 7M24070019 is RoHS compliant; all substitutes maintain this certification.

Q: What is MSL rating and why does it matter?

A: MSL (Moisture Sensitivity Level) indicates moisture absorption risk during storage. The 7M24070019 is MSL 1 (unlimited shelf life without baking). Most substitutes are also MSL 1 or MSL not applicable (Abracon parts). No special moisture handling is required for any listed part.

Q: Can I use the ABM8-24.000MHZ-10-R40-B1U-T with the lowest ESR?

A: Yes. The ABM8-24.000MHZ-10-R40-B1U-T matches all primary electrical parameters with 40 Ohms ESR (lowest available). This part is suitable for applications requiring minimal startup time and power consumption. Verify circuit design compatibility with the lower ESR value.

Q: Are there any temperature range differences among substitutes?

A: No. All listed substitutes operate across the identical temperature range: -20°C to +70°C, matching the 7M24070019 specification.

Q: What packaging options are available?

A: Most substitutes are supplied in Tape & Reel (TR) format for automated assembly. The 7M-24.000MEEQ-T and ABM8-24.000MHZ-10-R40-B1U-T are available in Cut Tape (CT) format. Verify packaging compatibility with your procurement and assembly process.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message