Equivalent & Substitute Parts for 7A-30.000MAAV-T

Part Overview

The 7A-30.000MAAV-T is a 30 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION in a 2-SMD, No Lead surface mount package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity. The crystal operates at 30 MHz with ±30ppm frequency stability and 8pF load capacitance, designed for applications requiring precise frequency reference in compact form factors.

Substiute Parts

7A-30.000MAAV-T

TXC CORPORATIONIn Stock: 10257A-30.000MAAV-T Datasheet

Current PartRFQ

445C33A30M00000

CTS-Frequency ControlsIn Stock: 787445C33A30M00000 Datasheet

SimilarRFQ

445C33J30M00000

CTS-Frequency ControlsIn Stock: 979445C33J30M00000 Datasheet

SimilarRFQ

445C33K30M00000

CTS-Frequency ControlsIn Stock: 1155445C33K30M00000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7A-30.000MAAV-T is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 30 MHz (exact match required)
• Frequency Stability: ±30ppm (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -20°C ~ 70°C (exact match required)
• Package / Case: 2-SMD, No Lead (exact match required)
• Physical Dimensions: 0.197" L x 0.126" W (5.00mm x 3.20mm) (exact match required)
• Height - Seated (Max): 0.053" (1.35mm) (exact match required)

Allowable Variation Parameters:

• Load Capacitance: 8pF, 9pF, or 10pF (within acceptable circuit design tolerance)
• ESR (Equivalent Series Resistance): 30 Ohms or 50 Ohms (circuit dependent)

All three substitute parts from CTS-Frequency Controls (445 series) meet the mandatory matching criteria. Variations in load capacitance and ESR are application-dependent and must be verified against circuit design specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 445C33K30M00000

The 445C33K30M00000 is the closest functional equivalent to the 7A-30.000MAAV-T. This part matches the load capacitance specification (8pF) of the original component, minimizing circuit redesign requirements. The CTS-Frequency Controls 445 series part is classified as Active, ensuring long-term availability and supply chain continuity. The part carries ROHS3 compliance certification, exceeding the RoHS compliance of the original part. Inventory availability is 1093 pieces.

Secondary Substitutes: 445C33J30M00000 and 445C33A30M00000

The 445C33J30M00000 (9pF load capacitance) and 445C33A30M00000 (10pF load capacitance) are functionally equivalent alternatives. These parts differ only in load capacitance specification. Selection between these alternatives depends on circuit design tolerance for load capacitance variation. Both parts are Active status with ROHS3 compliance and adequate inventory availability (885 and 748 pieces respectively).

ESR Consideration

All CTS-Frequency Controls substitutes feature 30 Ohms ESR compared to the original 50 Ohms ESR. Lower ESR values generally improve oscillator performance and reduce power consumption. Circuit validation is required to confirm compatibility with the lower ESR specification.

Frequently Asked Questions (FAQ)

Q: Can the 445C33K30M00000 be used as a direct replacement for the 7A-30.000MAAV-T?

A: Yes. The 445C33K30M00000 matches all mandatory parameters including frequency (30 MHz), frequency stability (±30ppm), load capacitance (8pF), operating temperature range (-20°C ~ 70°C), and physical package dimensions (5.00mm x 3.20mm, 1.35mm height). The part is pin-compatible and functionally equivalent.

Q: What is the difference between the three CTS substitute parts?

A: The three CTS-Frequency Controls substitutes differ only in load capacitance: 445C33K30M00000 (8pF), 445C33J30M00000 (9pF), and 445C33A30M00000 (10pF). All other electrical and mechanical parameters are identical. Selection depends on circuit design specifications for load capacitance.

Q: Does the lower ESR of the CTS parts (30 Ohms vs. 50 Ohms) affect compatibility?

A: Lower ESR generally improves oscillator startup characteristics and reduces power consumption. Circuit validation is required to confirm the design operates within specification with the lower ESR value. Most modern oscillator circuits tolerate this variation without modification.

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

A: Yes. All three CTS substitutes are supplied in Tape & Reel (TR) packaging, suitable for automated assembly. The physical package dimensions and mounting type (Surface Mount, 2-SMD No Lead) are identical to the original part.

Q: What is the compliance status of the substitute parts?

A: All three CTS-Frequency Controls substitutes carry ROHS3 compliance certification and REACH Unaffected status, meeting current environmental and regulatory requirements. The original 7A-30.000MAAV-T carries RoHS compliance, which is superseded by the ROHS3 certification of the substitutes.

Q: Is circuit redesign required when switching from the 7A-30.000MAAV-T to a CTS substitute?

A: No circuit redesign is required for the 445C33K30M00000 (8pF load capacitance match). For the 445C33J30M00000 or 445C33A30M00000, circuit validation is recommended to confirm operation within specification with the different load capacitance values.