EFO-S3584E5 Ceramic Resonator Equivalent & Substitute Parts

Part Overview

The EFO-S3584E5 is a 4.68 MHz ceramic resonator with integrated 33 pF capacitor manufactured by Panasonic Electronic Components. This surface mount component is designed for timing and frequency control applications requiring precise oscillation at 4.68 MHz with ±0.2% frequency stability across the -20°C to 80°C operating range.

The EFO-S3584E5 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this resonator.

Substiute Parts

EFO-S3584E5

Panasonic Electronic ComponentsIn Stock: 745EFO-S3584E5 Datasheet

Current PartRFQ

ECS-SR1-3.58-B-TR

ECS Inc.In Stock: 3609ECS-SR1-3.58-B-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EFO-S3584E5 is determined by the following critical parameters:

• Frequency Match: The substitute must operate at 4.68 MHz to maintain circuit timing specifications
• Frequency Stability: The substitute must maintain frequency stability within acceptable tolerance for the application
• Built-in Capacitance: The integrated capacitor value must be compatible with circuit design requirements
• Operating Temperature Range: The substitute must support the -20°C to 80°C operating window
• Mounting Type: The substitute must be surface mount compatible with existing PCB layouts
• Package Configuration: The substitute must use a 3-SMD non-standard package format

The ECS-SR1-4.68-B-TR meets these substitution criteria. While the capacitance differs slightly (30 pF versus 33 pF) and frequency stability is ±0.3% versus ±0.2%, both parameters remain within the ±0.5% frequency tolerance specification and support equivalent circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

The ECS-SR1-4.68-B-TR is a qualified substitute for the EFO-S3584E5 based on the following factors:

Frequency Alignment: Both components operate at 4.68 MHz with frequency tolerance of ±0.5%, ensuring circuit timing compatibility.

Stability Performance: The ECS-SR1-4.68-B-TR provides ±0.3% frequency stability, which is within the ±0.5% tolerance specification and acceptable for applications designed around the original ±0.2% specification.

Capacitance Consideration: The 3 pF difference in built-in capacitance (30 pF versus 33 pF) represents a 9% variance. Circuit designers must evaluate whether this capacitance variance affects load capacitance calculations and oscillator tuning for their specific application.

Environmental Compatibility: Both components support the identical -20°C to 80°C operating temperature range and MSL 1 moisture sensitivity level.

Compliance Status: The ECS-SR1-4.68-B-TR is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements. The EFO-S3584E5 compliance status is not specified in available documentation.

Supply Availability: The ECS-SR1-4.68-B-TR is available in Tape & Reel packaging format with higher inventory levels, supporting production volume requirements.

Frequently Asked Questions (FAQ)

Q: Can the ECS-SR1-4.68-B-TR directly replace the EFO-S3584E5 without circuit modification?

A: Direct replacement is possible for most applications. The 3 pF capacitance difference may require load capacitance recalculation in precision timing circuits. Verify that the ±0.3% frequency stability of the substitute meets your application's timing tolerance requirements.

Q: What is the significance of the capacitance difference between 33 pF and 30 pF?

A: The built-in capacitance affects the resonator's load capacitance and frequency tuning characteristics. In applications with tight frequency tolerance requirements, this 3 pF difference may necessitate circuit adjustment or oscillator tuning verification.

Q: Are the physical dimensions compatible between these two parts?

A: Both components use 3-SMD non-standard packages. The EFO-S3584E5 measures 7.80mm × 3.20mm × 1.60mm height, while the ECS-SR1-4.68-B-TR measures 7.50mm × 3.30mm × 2.20mm height. Verify PCB footprint and clearance compatibility before substitution.

Q: What is the difference between "Last Time Buy" and "Obsolete" product status?

A: "Obsolete" indicates the EFO-S3584E5 is no longer manufactured and existing inventory is depleted. "Last Time Buy" indicates the ECS-SR1-4.68-B-TR is in final production phase with limited availability. Both statuses necessitate identifying alternative sources or qualified substitutes.

Q: Does the Tape & Reel packaging of the substitute affect compatibility?

A: Tape & Reel packaging is a supply format for automated assembly processes and does not affect component electrical or mechanical compatibility. It supports higher-volume production requirements compared to bulk packaging.