TXC CORPORATION 7B25020003 Crystal 25 MHz Equivalent & Substitute Parts

Part Overview

The TXC CORPORATION 7B25020003 is a 25 MHz fundamental mode crystal oscillator in 4-SMD surface mount package with no lead configuration. This part operates at 25.0000 MHz with ±30ppm frequency stability and 20pF load capacitance. The 7B25020003 is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and field replacement applications.

Substiute Parts

7B25020003

TXC CORPORATIONIn Stock: 7397B25020003 Datasheet

Current PartRFQ

7M25020004

TXC CORPORATIONIn Stock: 8627M25020004 Datasheet

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7M25020011

TXC CORPORATIONIn Stock: 10457M25020011 Datasheet

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7V25020004

TXC CORPORATIONIn Stock: 7327V25020004 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7B25020003 is determined by the following critical parameters:

Primary Matching Criteria:

• Frequency: 25 MHz (exact match required)
• Frequency Stability: ±30ppm (exact match required)
• Operating Mode: Fundamental
• Mounting Type: Surface Mount
• Package / Case: 4-SMD, No Lead
• RoHS Compliance: Required

Secondary Compatibility Parameters:

• Load Capacitance: 20pF (primary specification); 18pF acceptable with circuit design verification
• ESR: 40 Ohms (primary specification); variations acceptable within circuit operating parameters
• Operating Temperature Range: 0°C ~ 70°C (primary); extended range 0°C ~ 85°C acceptable for applications within primary range
• Physical Dimensions: Variations in length, width, and height acceptable provided 4-SMD, No Lead package footprint compatibility is maintained

Substitute parts must maintain identical frequency and frequency stability specifications. Load capacitance and ESR variations require circuit-level compatibility assessment. Package footprint compatibility is mandatory for surface mount assembly.

Parameter Comparison

Engineering Selection Recommendations

7M25020004 (TXC CORPORATION)

The 7M25020004 is an active product with identical frequency (25 MHz) and frequency stability (±30ppm) specifications. Load capacitance matches the main part at 20pF. Operating temperature range extends to 85°C, providing broader thermal coverage. Physical dimensions are reduced (3.20mm x 2.50mm versus 5.00mm x 3.20mm), with lower seated height (0.80mm versus 1.05mm). This part is suitable for applications where the original 7B25020003 footprint can accommodate the smaller package dimensions. RoHS compliance and MSL rating are equivalent.

7M25020011 (TXC CORPORATION)

The 7M25020011 is an active product with identical frequency (25 MHz) and frequency stability (±30ppm) specifications. Load capacitance is specified at 18pF, differing from the main part's 20pF. Operating temperature range matches the main part (0°C ~ 70°C). Physical dimensions are reduced (3.20mm x 2.50mm versus 5.00mm x 3.20mm), with lower seated height (0.80mm versus 1.05mm). This part requires circuit design verification due to load capacitance difference. RoHS compliance and MSL rating are equivalent.

7V25020004 (TXC CORPORATION)

The 7V25020004 is an active product with identical frequency (25 MHz) and frequency stability (±30ppm) specifications. Load capacitance is specified at 18pF, differing from the main part's 20pF. ESR is specified at 60 Ohms, higher than the main part's 40 Ohms. Operating temperature range matches the main part (0°C ~ 70°C). Physical dimensions are reduced (3.20mm x 2.50mm versus 5.00mm x 3.20mm), with seated height of 0.90mm. This part requires circuit design verification due to load capacitance and ESR differences. RoHS compliance and MSL rating are equivalent.

All substitute parts maintain RoHS compliance and MSL 1 rating. Selection should prioritize active product status and load capacitance matching where possible.

Frequently Asked Questions (FAQ)

Q: Can the 7M25020004 directly replace the 7B25020003 in existing designs?

A: The 7M25020004 matches critical parameters: 25 MHz frequency, ±30ppm stability, 20pF load capacitance, and 4-SMD No Lead package. Physical dimensions are smaller (3.20mm x 2.50mm versus 5.00mm x 3.20mm). Direct replacement is possible if the PCB layout accommodates the reduced footprint and lower profile (0.80mm versus 1.05mm).

Q: What is the significance of load capacitance differences between 20pF and 18pF?

A: Load capacitance affects crystal oscillation frequency and circuit tuning. The 7M25020011 and 7V25020004 specify 18pF load capacitance versus the main part's 20pF. Substitution requires verification that the oscillator circuit design parameters remain within specification with the different load capacitance value.

Q: Why does the 7V25020004 have higher ESR (60 Ohms) compared to the 7B25020003 (40 Ohms)?

A: ESR affects crystal drive level and power consumption in the oscillator circuit. The 7V25020004 specifies 60 Ohms ESR versus the main part's 40 Ohms. Substitution requires verification that the oscillator circuit can operate within specification with the higher ESR value.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 7B25020003 main part and all three substitute parts (7M25020004, 7M25020011, 7V25020004) are RoHS Compliant with MSL 1 (Unlimited) rating.

Q: What is the product status difference between the main part and substitutes?

A: The 7B25020003 is classified as Obsolete. All substitute parts (7M25020004, 7M25020011, 7V25020004) are classified as Active products, ensuring ongoing availability and manufacturing support.

Q: Can the 7M25020011 or 7V25020004 be used in applications requiring 20pF load capacitance?

A: Both parts specify 18pF load capacitance. Use in 20pF applications requires circuit design verification to confirm oscillation stability and frequency accuracy remain within specification.

Q: What are the package footprint considerations for substitution?

A: All parts use 4-SMD, No Lead package configuration. The 7B25020003 measures 5.00mm x 3.20mm with 1.05mm height. Substitute parts measure 3.20mm x 2.50mm with heights ranging from 0.80mm to 0.90mm. PCB layout must accommodate the smaller footprint and lower profile.