7M25020008 25 MHz Crystal Equivalent & Substitute Parts

Part Overview

The 7M25020008 is a 25 MHz surface mount crystal oscillator manufactured by TXC CORPORATION. This active product operates at 25.0000 MHz with ±20ppm frequency stability and 20pF load capacitance, housed in a 4-SMD no-lead package measuring 3.20mm × 2.50mm. The component is RoHS compliant and classified as MSL 1 (unlimited moisture sensitivity level), making it suitable for standard industrial and commercial applications requiring precise frequency reference.

Substitute parts are identified when equivalent frequency, stability, and mechanical compatibility are maintained across alternative manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

7M25020008

TXC CORPORATIONIn Stock: 11967M25020008 Datasheet

Current PartRFQ

ECS-250-18-33-JTM-TR

ECS Inc.In Stock: 50563ECS-250-18-33-JTM-TR Datasheet

SimilarRFQ

FL2500047

Diodes IncorporatedIn Stock: 1959FL2500047 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7M25020008 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Frequency: 25.0000 MHz (exact match required)
• Frequency Stability: ±20ppm (exact match required)
• Mounting Type: Surface Mount
• Package / Case: 4-SMD, No Lead
• Physical Dimensions: 3.20mm × 2.50mm length and width
• Operating Temperature Range: -20°C to 70°C (minimum)
• RoHS Compliance: Required

Allowable Variation:

• Load Capacitance: 18pF to 20pF (minor variation acceptable within circuit design tolerance)
• Height - Seated: Up to 0.80mm maximum
• ESR (Equivalent Series Resistance): Provided when available; not a primary substitution criterion

The substitute parts ECS-250-18-33-JTM-TR and FL2500047 satisfy all mandatory criteria. Both operate at 25 MHz with ±20ppm stability, utilize identical 4-SMD no-lead packaging, and maintain the same physical footprint and temperature range. Load capacitance differs at 18pF versus the original 20pF; this variation is within acceptable engineering tolerance for most applications.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing status and full regulatory compliance. Selection between the 7M25020008 and its substitutes is based on the following engineering factors:

TXC 7M25020008: Primary choice when 20pF load capacitance is specified in circuit design. Maintains exact load capacitance matching with original design parameters.

ECS ECS-250-18-33-JTM-TR: Suitable for applications where 18pF load capacitance is acceptable. Offers lower ESR at 40 Ohms, which may reduce phase noise in certain oscillator circuits. Available in higher inventory volume (50,526 pcs).

Diodes FL2500047 (SaRonix-eCera™ FL): Suitable for applications where 18pF load capacitance is acceptable. Provides slightly lower maximum seated height (0.75mm vs. 0.80mm), beneficial for space-constrained PCB layouts. ESR specified at 60 Ohms.

All three parts maintain identical frequency, stability, temperature range, and physical footprint. RoHS3 compliance of substitute parts exceeds the RoHS compliance of the original part. Selection should be based on circuit load capacitance requirements and available inventory.

Frequently Asked Questions (FAQ)

Q: Can ECS-250-18-33-JTM-TR or FL2500047 be used as direct replacements for 7M25020008?

A: Both parts are functionally equivalent for applications designed to operate with 18pF load capacitance. If the original circuit design specifies 20pF load capacitance, circuit simulation or testing is necessary to confirm performance with the 18pF substitute. Frequency stability, operating temperature, and physical package are identical across all three parts.

Q: What is the difference between 20pF and 18pF load capacitance?

A: Load capacitance is the external capacitance value that the crystal oscillator circuit must present for the crystal to oscillate at its specified frequency. A 2pF difference represents approximately 10% variation. Circuits designed for 20pF operation may require capacitor value adjustment when using an 18pF crystal to maintain frequency accuracy.

Q: Are the substitute parts available in the same packaging format?

A: The 7M25020008 is supplied in standard packaging (not specified as Tape & Reel). Both substitute parts are supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly. This packaging difference does not affect electrical performance or PCB mounting compatibility.

Q: What does ESR mean, and why do the substitute parts have different values?

A: ESR (Equivalent Series Resistance) represents the internal resistance of the crystal. ECS-250-18-33-JTM-TR specifies 40 Ohms; FL2500047 specifies 60 Ohms. Lower ESR generally reduces phase noise and power consumption in oscillator circuits. ESR is not specified for the original 7M25020008 part.

Q: Are all three parts RoHS compliant?

A: Yes. The 7M25020008 is RoHS Compliant. Both substitute parts are ROHS3 Compliant, which represents a more recent and stringent RoHS standard. All parts are REACH Unaffected and classified under ECCN EAR99.

Q: What is MSL 1 (Unlimited) moisture sensitivity level?

A: MSL 1 indicates the lowest moisture sensitivity classification. Components rated MSL 1 require no special moisture control during storage, handling, or assembly. All three parts carry this rating, indicating equivalent moisture tolerance.

Q: Can I mix these parts in the same production batch?

A: All three parts are mechanically and electrically compatible for PCB assembly. However, if load capacitance is critical to circuit performance, parts should not be mixed within a single design revision. Separate design validation is required if transitioning from 20pF to 18pF load capacitance specifications.