CPPFXC8-A7BR-4.0TS Equivalent & Substitute Parts

Part Overview

The CPPFXC8-A7BR-4.0TS is a 4 MHz XO (Standard) CMOS oscillator manufactured by Cardinal Components Inc., designed for applications requiring a crystal-based frequency reference with enable/disable functionality. This part operates at 5V supply voltage with CMOS output and is housed in a 4-SOJ package with 7.62mm pitch.

The CPPFXC8-A7BR-4.0TS is classified as Obsolete. Equivalent substitute parts are necessary for new designs, production continuity, and long-term component availability assurance.

Substiute Parts

CPPFXC8-A7BR-4.0TS

Cardinal Components Inc.In Stock: 783CPPFXC8-A7BR-4.0TS Datasheet

Current PartRFQ

ECS-8FMX-040-TR

ECS Inc.In Stock: 5189ECS-8FMX-040-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CPPFXC8-A7BR-4.0TS is determined by the following critical parameters:

• Frequency Match: 4.0000 MHz (exact match required)
• Output Compatibility: CMOS output (primary requirement)
• Supply Voltage: 5V operation
• Enable/Disable Function: Required for circuit control compatibility
• Operating Temperature Range: -40°C ~ 85°C minimum coverage
• Package Type: 4-SOJ Surface Mount configuration
• Compliance: RoHS compliance for regulatory alignment

The substitute part ECS-8FMX-040-TR meets these core substitution criteria while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The ECS-8FMX-040-TR is the qualified substitute for the CPPFXC8-A7BR-4.0TS based on the following engineering criteria:

Product Status: The substitute part maintains Active product status, ensuring long-term availability and manufacturing support compared to the Obsolete main part.

Compliance Alignment: Both parts are RoHS compliant. The substitute achieves ROHS3 compliance, representing current regulatory standards. Both parts carry the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Functional Equivalence: The substitute provides CMOS and TTL output compatibility, exceeding the CMOS-only output of the main part. Both parts support 5V supply voltage, Enable/Disable function, and identical operating temperature range (-40°C ~ 85°C).

Frequency Specification: Both parts operate at 4.0000 MHz. The main part specifies ±25ppm frequency stability, while the substitute specifies ±200ppm. Applications requiring the tighter stability specification of the main part should evaluate this difference against circuit requirements.

Power Consumption: The substitute demonstrates lower maximum supply current (23mA vs. 45mA), providing improved power efficiency in enable mode.

Packaging and Handling: The substitute offers superior moisture sensitivity (MSL 1 Unlimited vs. MSL 2 1 Year), reducing moisture-related handling constraints. Both parts are housed in 4-SOJ Surface Mount packages with comparable physical dimensions and identical seated height (4.70mm). The substitute is supplied in Tape & Reel packaging, standard for production environments.

Frequently Asked Questions (FAQ)

Q: Can the ECS-8FMX-040-TR directly replace the CPPFXC8-A7BR-4.0TS in existing designs?

A: Yes, for applications where the frequency stability specification of ±200ppm is acceptable. Both parts operate at 4.0000 MHz with 5V supply, Enable/Disable function, and identical operating temperature range. The substitute's CMOS and TTL output compatibility provides functional equivalence. PCB layout compatibility should be verified due to different pitch specifications (5.08mm vs. 7.62mm).

Q: What is the significance of the different pitch specifications (7.62mm vs. 5.08mm)?

A: Pitch refers to the center-to-center spacing of package leads. The main part uses 7.62mm pitch while the substitute uses 5.08mm pitch. This difference requires PCB footprint verification before substitution. Physical dimensions are comparable (14.50mm vs. 14.00mm length; 8.80mm vs. 8.65mm width), but lead spacing must match the circuit board design.

Q: How does frequency stability affect circuit performance?

A: The main part specifies ±25ppm frequency stability while the substitute specifies ±200ppm. Frequency stability determines the oscillator's frequency accuracy over temperature and time. Applications with strict frequency tolerance requirements should evaluate whether ±200ppm meets circuit specifications. Applications with relaxed frequency tolerance can use the substitute without performance impact.

Q: What are the moisture sensitivity implications?

A: The main part carries MSL 2 (1 Year), requiring controlled storage and handling for one year from manufacturing. The substitute carries MSL 1 (Unlimited), eliminating time-based moisture sensitivity constraints. This provides operational flexibility for inventory management and extended storage periods.

Q: Does the lower supply current of the substitute affect compatibility?

A: No. The substitute's lower maximum supply current (23mA vs. 45mA) indicates improved power efficiency and does not affect functional compatibility. Circuits designed for the main part's 45mA specification will operate correctly with the substitute's lower current draw.

Q: Are both parts RoHS compliant?

A: Yes. The main part is RoHS Compliant. The substitute is ROHS3 Compliant, representing current regulatory standards. Both parts meet RoHS requirements for hazardous substance restrictions.