8Q-38.400MAAC-T Crystal Equivalent & Substitute Parts

Part Overview

The 8Q-38.400MAAC-T is a 38.4 MHz surface mount crystal manufactured by TXC CORPORATION. This fundamental mode crystal operates across the temperature range of -20°C to 70°C and is designed for applications requiring precise frequency generation in compact form factors. The part is actively produced and maintains RoHS compliance with MSL 1 rating, indicating unlimited shelf life under standard storage conditions. Substitute parts are identified to provide alternative sourcing options while maintaining identical electrical and mechanical specifications.

Substiute Parts

8Q-38.400MAAC-T

TXC CORPORATIONIn Stock: 6928Q-38.400MAAC-T Datasheet

Current PartRFQ

8Q-38.400MAAC-T

FTSIn Stock: 65628Q-38.400MAAC-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 8Q-38.400MAAC-T is determined by strict equivalence across the following critical parameters:

• Frequency: 38.4 MHz (exact match required)
• Frequency Stability: ±30 ppm (exact match required)
• Load Capacitance: 9 pF (exact match required)
• ESR: 80 Ohms (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -20°C to 70°C (exact match required)
• Package Configuration: 4-SMD, No Lead (exact match required)
• Physical Dimensions: 1.60 mm × 1.20 mm × 0.40 mm maximum height (exact match required)
• Mounting Type: Surface Mount (exact match required)
• RoHS Status: Compliant (exact match required)
• MSL Rating: 1 (Unlimited) (exact match required)

Substitute parts must satisfy all parameters listed above without deviation. Manufacturer differences do not affect substitution eligibility when all electrical and mechanical specifications are identical.

Parameter Comparison

Engineering Selection Recommendations

Both the primary part (TXC CORPORATION 8Q-38.400MAAC-T) and the substitute part (FTS 8Q-38.400MAAC-T) are actively produced and maintain full RoHS compliance. Selection between these parts is based on availability, lead time, and supply chain requirements rather than technical performance differences. Both parts carry MSL 1 rating, indicating equivalent moisture handling and storage characteristics. The FTS variant currently maintains higher inventory levels (6549 pcs) compared to the TXC variant (644 pcs), which may influence procurement decisions for high-volume applications. Both parts are suitable for direct substitution in existing designs without circuit modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can the FTS 8Q-38.400MAAC-T be used as a direct replacement for the TXC CORPORATION 8Q-38.400MAAC-T?

A: Yes. Both parts share identical electrical specifications (38.4 MHz, ±30 ppm stability, 9 pF load capacitance, 80 Ohms ESR), mechanical dimensions (1.60 × 1.20 × 0.40 mm), package configuration (4-SMD, No Lead), and compliance certifications (RoHS, MSL 1). Direct substitution is supported without design changes.

Q: Are there any differences in operating temperature performance between these parts?

A: No. Both parts operate across the identical temperature range of -20°C to 70°C with the same frequency stability specification of ±30 ppm across this range.

Q: What is the significance of the MSL 1 rating for both parts?

A: MSL 1 indicates unlimited shelf life under standard storage conditions (23°C, 50% relative humidity). Both parts do not require special moisture control during storage or handling, simplifying inventory management and reducing risk of moisture-induced failures.

Q: Do both parts require identical PCB footprints and reflow profiles?

A: Yes. Both parts use the 4-SMD, No Lead package with identical physical dimensions. PCB footprints, solder paste stencil designs, and reflow temperature profiles are interchangeable.

Q: Is there a difference in RoHS compliance between the two manufacturers?

A: No. Both the TXC CORPORATION and FTS variants are RoHS compliant, meeting the same regulatory requirements for hazardous substance restrictions.

Q: What load capacitance value should be used in circuit design for either part?

A: Both parts specify 9 pF load capacitance. Circuit design and oscillator tank capacitance calculations must be based on this value for both variants.

Q: Are there any differences in ESR (Equivalent Series Resistance) that would affect circuit performance?

A: No. Both parts specify 80 Ohms ESR. This parameter is identical and will produce equivalent circuit behavior in oscillator applications.