7W-4.000MBD-T CMOS Crystal Oscillator Equivalent & Substitute Parts

Part Overview

The 7W-4.000MBD-T is a 4 MHz CMOS crystal oscillator manufactured by TXC CORPORATION, designed for applications requiring a standard XO (Standard) oscillator with enable/disable functionality. This part operates at 3.3V supply voltage with CMOS output and is housed in a 4-SMD, No Lead surface mount package.

The 7W-4.000MBD-T is classified as Obsolete in product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this oscillator frequency and electrical specification.

Substiute Parts

7W-4.000MBD-T

TXC CORPORATIONIn Stock: 10587W-4.000MBD-T Datasheet

Current PartRFQ

510CBA4M00000AAGR

Skyworks Solutions Inc.In Stock: 1042510CBA4M00000AAGR Datasheet

DirectRFQ

510CBB4M00000AAGR

Skyworks Solutions Inc.In Stock: 1142510CBB4M00000AAGR Datasheet

DirectRFQ

CPPLC7L-A7BR-4.0TS

Cardinal Components Inc.In Stock: 885CPPLC7L-A7BR-4.0TS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7W-4.000MBD-T are qualified based on the following critical parameters that must match or remain compatible:

Mandatory Matching Parameters:

• Frequency: 4.0000 MHz
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable
• Frequency Stability: ±25ppm
• Operating Temperature Range: -40°C to +85°C
• Package Type: 4-SMD, No Lead
• Package Dimensions: 7.00mm L × 5.00mm W
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: MSL 1

Allowable Parameter Variations:

• Current Supply (Max): Substitute parts may exceed the 20mA specification of the main part, provided the application circuit can accommodate higher current draw
• Height (Seated Max): Substitute parts may have increased height within PCB assembly constraints
• Current Supply (Disable) (Max): Variations permitted based on enable/disable circuit design

All three substitute parts meet the mandatory matching parameters and are therefore electrically and mechanically compatible with the 7W-4.000MBD-T in applications where the specified operating conditions are maintained.

Parameter Comparison

Engineering Selection Recommendations

For Active Production Designs:

The 510CBB4M00000AAGR and 510CBA4M00000AAGR (Skyworks Si510 series) are recommended as primary substitutes. Both parts are in Active product status with established supply chains and higher inventory levels (1051 and 1004 units respectively). These parts maintain full electrical and mechanical compatibility with the 7W-4.000MBD-T while offering improved long-term availability.

For RoHS Compliance Requirements:

The CPPLC7L-A7BR-4.0TS (Cardinal Components FIPO™ CPPL series) is specified as ROHS3 Compliant and is suitable for applications with strict RoHS compliance mandates. This part is in Active status with 795 units in inventory.

For Height-Constrained PCB Designs:

The 7W-4.000MBD-T has the lowest seated height at 1.42mm. Substitute parts exhibit increased heights (1.80mm for Skyworks, 1.90mm for Cardinal). PCB assembly clearance must be verified before substitution in space-constrained applications.

For Current Budget Optimization:

The 7W-4.000MBD-T specifies 20mA maximum supply current. All substitute parts exceed this specification (25-26mA). Power supply and circuit design must accommodate the higher current draw of substitute parts.

All substitute parts maintain the mandatory electrical parameters: 4 MHz frequency, CMOS output, 3.3V supply, enable/disable function, ±25ppm stability, and -40°C to +85°C operating range.

Frequently Asked Questions (FAQ)

Q: Can the 510CBB4M00000AAGR be used as a direct replacement for the 7W-4.000MBD-T?

A: Yes. The 510CBB4M00000AAGR meets all mandatory electrical and mechanical parameters: 4 MHz frequency, CMOS output, 3.3V supply voltage, enable/disable function, ±25ppm frequency stability, -40°C to +85°C operating temperature, 4-SMD No Lead package with 7.00mm × 5.00mm footprint, and MSL 1 moisture sensitivity. The part is in Active status with established supply availability.

Q: What is the difference between the two Skyworks substitute parts (510CBA4M00000AAGR and 510CBB4M00000AAGR)?

A: Both parts are electrically identical and meet the same specifications for frequency, output type, supply voltage, function, stability, and operating temperature. The difference lies in the base product number designation (510CBA versus 510CBB). Both are qualified substitutes with equivalent performance characteristics. Selection between these two parts may be based on inventory availability or specific procurement requirements.

Q: Are there any PCB layout considerations when substituting the 7W-4.000MBD-T?

A: The footprint dimensions (7.00mm × 5.00mm) remain constant across all substitute parts, allowing direct PCB layout compatibility. However, the seated height increases from 1.42mm (7W-4.000MBD-T) to 1.80mm (Skyworks) or 1.90mm (Cardinal). Verify that PCB assembly clearance and component stacking height constraints are satisfied before substitution.

Q: Does the higher current specification of substitute parts affect circuit design?

A: The 7W-4.000MBD-T specifies 20mA maximum supply current. Substitute parts specify 25-26mA maximum supply current. The power supply and oscillator driver circuit must be capable of delivering the higher current. If the existing circuit is designed with minimal current margin, power supply capacity and current limiting resistors should be reviewed.

Q: Are all substitute parts RoHS compliant?

A: The 7W-4.000MBD-T is specified as RoHS Compliant. The CPPLC7L-A7BR-4.0TS is specified as ROHS3 Compliant. The Skyworks Si510 parts (510CBA4M00000AAGR and 510CBB4M00000AAGR) do not have RoHS status specified in the provided data. For applications with mandatory RoHS compliance requirements, the Cardinal Components CPPLC7L-A7BR-4.0TS is the recommended choice.

Q: Can the enable/disable function be used identically across all parts?

A: Yes. All parts, including the main part and all substitutes, feature enable/disable functionality. The enable/disable pin configuration and logic levels remain consistent across the 4-SMD No Lead package type, allowing identical circuit implementation.

Q: What is the moisture sensitivity level for all parts?

A: All parts are specified as MSL 1 (Unlimited), indicating the lowest moisture sensitivity classification. No special moisture control or baking procedures are required during storage or handling for any of these parts.