7W-49.152MBD-T CMOS Oscillator Equivalent & Substitute Parts

Part Overview

The 7W-49.152MBD-T is a 49.152 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This surface mount device operates at 3.3V with Enable/Disable functionality and is housed in a 4-SMD, No Lead package. The part is currently classified as Obsolete, making identification of equivalent and substitute components essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

7W-49.152MBD-T

TXC CORPORATIONIn Stock: 8117W-49.152MBD-T Datasheet

Current PartRFQ

CPPC7LZ-A7BR-49.152TS

Cardinal Components Inc.In Stock: 689CPPC7LZ-A7BR-49.152TS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7W-49.152MBD-T is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 49.152 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable capability
• Frequency Stability: ±25ppm
• Operating Temperature Range: -40°C ~ 85°C
• Package Type: 4-SMD, No Lead
• Mounting Type: Surface Mount
• Physical Dimensions: 7.00mm x 5.00mm footprint

Allowable Variations:

• Maximum seated height: up to 1.90mm (original: 1.42mm)
• Supply current: up to 25mA (original: 20mA maximum)
• Packaging format: Tape & Reel acceptable for original bulk packaging
• RoHS compliance level: ROHS3 acceptable (original: RoHS Compliant)
• Disable mode current: specification permitted if not originally defined

The substitute part CPPC7LZ-A7BR-49.152TS meets all mandatory matching parameters and falls within allowable variation limits.

Parameter Comparison

Engineering Selection Recommendations

The CPPC7LZ-A7BR-49.152TS from Cardinal Components Inc. is a direct functional substitute for the obsolete 7W-49.152MBD-T. Selection is based on the following engineering criteria:

Compliance & Certification:

• Both parts maintain RoHS compliance (Cardinal part exceeds with ROHS3 status)
• Both parts are REACH Unaffected
• Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications

Electrical Equivalence:

• Identical frequency, output type, supply voltage, and enable/disable function
• Matching frequency stability specification (±25ppm)
• Identical operating temperature range (-40°C ~ 85°C)
• Supply current specification of 25mA accommodates the original 20mA requirement

Physical & Mechanical Compatibility:

• Identical footprint (7.00mm x 5.00mm)
• Identical package type (4-SMD, No Lead)
• Seated height of 1.90mm is within acceptable PCB assembly clearance for original 1.42mm design
• Moisture sensitivity level MSL 1 (Unlimited) matches original specification

Availability & Product Status:

• Cardinal part is Active status with 642 pcs in stock inventory
• Original TXC part is Obsolete with limited remaining inventory (776 pcs)

The CPPC7LZ-A7BR-49.152TS is suitable for direct replacement in new designs and legacy system support applications.

Frequently Asked Questions (FAQ)

Q: Can the CPPC7LZ-A7BR-49.152TS be used as a direct drop-in replacement for the 7W-49.152MBD-T?

A: Yes. Both parts share identical electrical specifications (49.152 MHz, CMOS output, 3.3V supply, Enable/Disable function, ±25ppm stability, -40°C to 85°C operating range) and identical package footprint (7.00mm x 5.00mm, 4-SMD No Lead). The substitute part is mechanically and electrically compatible for PCB assembly and circuit operation.

Q: What is the difference in maximum seated height between these parts?

A: The original 7W-49.152MBD-T has a maximum seated height of 1.42mm, while the CPPC7LZ-A7BR-49.152TS has a maximum seated height of 1.90mm. This 0.48mm difference is within standard PCB assembly tolerances and does not affect functionality. Verify clearance in your specific PCB design if height-constrained applications are present.

Q: Are there differences in power consumption between these oscillators?

A: The original part specifies a maximum supply current of 20mA. The substitute part specifies a maximum of 25mA. The substitute part additionally defines a disable mode current of 50µA, which was not specified for the original part. Both specifications are compatible with standard 3.3V supply designs. Verify your power budget accommodates the 25mA maximum if operating at full supply current.

Q: What is the significance of the packaging difference (Tape & Reel vs. unspecified)?

A: The substitute part is supplied in Tape & Reel (TR) format, which is the standard packaging for high-volume surface mount component distribution. This is a procurement and handling format difference only and does not affect electrical or mechanical performance. Tape & Reel packaging is compatible with automated PCB assembly equipment.

Q: Are both parts RoHS compliant?

A: Yes. The original 7W-49.152MBD-T is RoHS Compliant. The substitute CPPC7LZ-A7BR-49.152TS is ROHS3 Compliant, which represents an enhanced compliance level. Both parts meet RoHS requirements and are suitable for applications requiring RoHS certification.

Q: What is the Moisture Sensitivity Level (MSL) for both parts?

A: Both parts carry MSL 1 (Unlimited), indicating the lowest moisture sensitivity classification. This means both parts have unlimited shelf life under normal storage conditions and do not require special moisture control during handling or storage.

Q: Can I use the CPPC7LZ-A7BR-49.152TS in legacy systems currently using the 7W-49.152MBD-T?

A: Yes. The substitute part meets all electrical and mechanical specifications of the original part. For legacy system support, verify that your PCB assembly process and test procedures accommodate the slightly increased maximum height (1.90mm vs. 1.42mm) if space constraints exist. No circuit design changes are required.