8Q-38.400MEEV-T 38.4 MHz Crystal Equivalent & Substitute Parts

Part Overview

The 8Q-38.400MEEV-T is a 38.4 MHz fundamental mode crystal oscillator manufactured by TXC CORPORATION in a 4-SMD, No Lead surface mount package. This component is classified as an Active product with full RoHS compliance and unlimited moisture sensitivity rating (MSL 1). The 38.4 MHz frequency with ±10ppm stability is commonly used in telecommunications, data communication, and embedded system applications requiring precise timing references. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and environmental ratings to ensure direct component interchangeability in circuit design.

Substiute Parts

8Q-38.400MEEV-T

TXC CORPORATIONIn Stock: 10948Q-38.400MEEV-T Datasheet

Current PartRFQ

8Q-38.400MEEC-T

FTSIn Stock: 49608Q-38.400MEEC-T Datasheet

SimilarRFQ

ECS-384-10-47-CKM-TR

ECS Inc.In Stock: 7501ECS-384-10-47-CKM-TR Datasheet

SimilarRFQ

8Q-38.400MEEV-T

FTSIn Stock: 39128Q-38.400MEEV-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 8Q-38.400MEEV-T is determined by the following critical parameters:

Primary Matching Criteria:

• Frequency: 38.4 MHz (exact match required)
• Frequency Stability: ±10ppm (exact match required)
• ESR: 80 Ohms (exact match required)
• Operating Mode: Fundamental (exact match required)
• Package Type: 4-SMD, No Lead (exact match required)
• Physical Dimensions: 1.60mm x 1.20mm (exact match required)
• Operating Temperature Range: -20°C ~ 70°C (exact match required)
• Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Parameters:

• Load Capacitance: 8pF to 10pF (minor variation acceptable within circuit design tolerance)
• Maximum Seated Height: 0.016" to 0.014" (minor variation acceptable for PCB assembly)
• RoHS Compliance: Required
• Moisture Sensitivity Level: MSL 1 (Unlimited)

Substitute parts are grouped into two categories: Direct Parametric Equivalents (identical load capacitance) and Similar Electrical Equivalents (load capacitance within acceptable tolerance range).

Parameter Comparison

Engineering Selection Recommendations

Direct Parametric Equivalent (Preferred for Pin-for-Pin Replacement):

The 8Q-38.400MEEV-T manufactured by FTS is a direct parametric equivalent to the primary part. This substitute maintains identical load capacitance (8pF), ESR (80 Ohms), frequency (38.4 MHz), and frequency stability (±10ppm). All mechanical and electrical parameters match exactly. Both parts carry Active product status, RoHS compliance, and MSL 1 rating. This part is suitable for direct substitution without circuit modification.

Similar Electrical Equivalent (Load Capacitance Tolerance Range):

The 8Q-38.400MEEC-T (FTS) and ECS-384-10-47-CKM-TR (ECS Inc.) are classified as similar electrical equivalents. Both maintain the critical parameters of frequency, frequency stability, ESR, operating mode, temperature range, and package type. Load capacitance varies within the range of 9pF to 10pF compared to the primary part's 8pF specification. These substitutes are compatible with circuit designs that accommodate load capacitance tolerance within this range. Both parts maintain Active product status and full RoHS compliance. The ECS-384-10-47-CKM-TR offers slightly reduced maximum seated height (0.35mm vs. 0.40mm), which may provide marginal PCB assembly advantages in space-constrained applications.

Compliance and Regulatory Considerations:

All substitute parts maintain RoHS compliance status. The primary part (TXC) and FTS variants carry standard RoHS Compliant designation. The ECS Inc. part carries ROHS3 Compliant designation, indicating compliance with the most current RoHS directive revision. All parts are classified as EAR99 for export control purposes and carry HTSUS code 8541.60.0060. REACH status is either Unaffected or available upon request for all parts, indicating no regulatory restrictions on component selection.

Frequently Asked Questions (FAQ)

Q: Can the 8Q-38.400MEEC-T (9pF load capacitance) be used as a direct replacement for the 8Q-38.400MEEV-T (8pF load capacitance)?

A: The 8Q-38.400MEEC-T is electrically compatible within the load capacitance tolerance range of the application circuit. Load capacitance variation of 1pF is within acceptable tolerance for most 38.4 MHz crystal oscillator circuits. However, circuit-specific load capacitance requirements must be verified. If the circuit design specifies exactly 8pF load capacitance, the FTS 8Q-38.400MEEV-T (8pF) is the preferred substitute.

Q: What is the difference between the ECS-384-10-47-CKM-TR and the TXC 8Q-38.400MEEV-T?

A: Both parts share identical frequency (38.4 MHz), frequency stability (±10ppm), ESR (80 Ohms), operating mode (Fundamental), temperature range (-20°C ~ 70°C), and package type (4-SMD, No Lead). The primary differences are: (1) Load capacitance is 10pF versus 8pF, (2) Maximum seated height is 0.35mm versus 0.40mm, and (3) RoHS designation is ROHS3 Compliant versus standard RoHS Compliant. All differences are within acceptable substitution parameters for standard applications.

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

A: Yes. All substitute parts are supplied in Tape & Reel (TR) packaging format, identical to the primary part. Physical dimensions are 1.60mm x 1.20mm (0.063" L x 0.047" W) for all parts, ensuring compatibility with standard SMD pick-and-place assembly equipment and PCB footprints.

Q: What is the significance of MSL 1 (Unlimited) rating for these crystal parts?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. This rating applies to all listed parts, eliminating moisture sensitivity concerns during procurement, warehousing, and assembly operations.

Q: Can load capacitance variation affect circuit frequency stability?

A: Load capacitance affects the operating frequency of a crystal oscillator circuit through the load capacitance network in the oscillator circuit design. Variations in load capacitance (8pF, 9pF, or 10pF) will result in minor frequency shifts within the ±10ppm stability specification. Circuit design must account for the specified load capacitance value. If the circuit is designed for 8pF load capacitance, substitution with 9pF or 10pF parts may require load capacitance adjustment in the oscillator circuit to maintain specified frequency accuracy.

Q: Are all parts RoHS compliant?

A: Yes. All listed parts carry RoHS compliance certification. The primary part and FTS variants carry standard RoHS Compliant status. The ECS Inc. part carries ROHS3 Compliant status, indicating compliance with the most current RoHS directive. Both designations satisfy RoHS compliance requirements for component selection.

Q: What inventory levels are available for each substitute part?

A: Current inventory levels are: 8Q-38.400MEEV-T (TXC) - 1039 Pcs, 8Q-38.400MEEC-T (FTS) - 4863 Pcs, ECS-384-10-47-CKM-TR (ECS Inc.) - 7474 Pcs, 8Q-38.400MEEV-T (FTS) - 3802 Pcs. Inventory availability should be confirmed at time of procurement.