EPSON MA-406 4.0000M-B3 Equivalent & Substitute Parts

Part Overview

The EPSON MA-406 4.0000M-B3 is a 4 MHz fundamental mode crystal oscillator designed for surface mount applications. This part operates at 4.0000 MHz with ±50ppm frequency stability and 16pF load capacitance. The product is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations where this frequency standard is required.

Substiute Parts

MA-406 4.0000M-B3: ROHS

EPSONIn Stock: 875MA-406 4.0000M-B3: ROHS Datasheet

Current PartRFQ

GC0400058

Diodes IncorporatedIn Stock: 2728GC0400058 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the EPSON MA-406 4.0000M-B3 is determined by the following critical parameters:

• Frequency Match: 4.0000 MHz (exact)
• Load Capacitance: 16pF (exact)
• ESR: 150 Ohms (exact)
• Operating Mode: Fundamental (exact)
• Operating Temperature Range: -20°C to 70°C minimum (equal or broader range acceptable)
• RoHS Compliance: ROHS3 Compliant (required for regulatory alignment)
• Mounting Type: Surface Mount (required for PCB compatibility)

The Diodes Incorporated GC0400058 qualifies as a substitute based on matching all critical electrical parameters and compliance requirements. Package form factor differences (4-SOJ vs. HC-49/US) represent a mechanical consideration requiring PCB layout verification but do not disqualify electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

The Diodes Incorporated GC0400058 is electrically equivalent to the EPSON MA-406 4.0000M-B3 for all critical oscillator parameters. The substitute part demonstrates superior frequency stability (±30ppm vs. ±50ppm), providing enhanced performance margin in applications sensitive to frequency drift.

Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring regulatory and environmental compatibility. The active product status of the GC0400058 ensures long-term availability and supply chain continuity compared to the obsolete EPSON part.

Mechanical substitution requires PCB layout assessment due to package form factor differences. The GC0400058 exhibits slightly larger width (4.80mm vs. 4.00mm) and height (4.20mm vs. 3.70mm) dimensions. These dimensional variances necessitate verification of available PCB footprint space and clearance to adjacent components before implementation.

Frequently Asked Questions (FAQ)

Q: Can the Diodes GC0400058 directly replace the EPSON MA-406 4.0000M-B3 without circuit modifications?

A: Electrical substitution is direct. The GC0400058 matches all critical oscillator parameters: 4 MHz frequency, 16pF load capacitance, 150 Ohms ESR, and fundamental operating mode. Circuit modifications are not required from an electrical standpoint. PCB layout modifications may be necessary due to package form factor differences.

Q: What is the significance of the frequency stability difference (±50ppm vs. ±30ppm)?

A: The GC0400058 provides tighter frequency stability, meaning the output frequency will deviate less from the nominal 4 MHz specification across the operating temperature range and component lifetime. This represents improved performance and is compatible with applications designed for the original ±50ppm specification.

Q: Are there package compatibility concerns?

A: Yes. The EPSON part uses 4-SOJ packaging while the Diodes part uses HC-49/US packaging. These represent different physical form factors with distinct footprint requirements. The GC0400058 is approximately 0.80mm wider and 0.50mm taller. PCB layout verification is required to confirm adequate space and clearance to neighboring components.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the EPSON MA-406 4.0000M-B3 and Diodes GC0400058 are ROHS3 compliant with MSL rating of 1 (Unlimited). Regulatory and environmental compliance requirements are satisfied by either part.

Q: Why is the EPSON part listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and support. The Diodes GC0400058 maintains active product status, ensuring continued availability, technical support, and supply chain reliability for new designs and legacy system support.