AS5304B-ATSM Rotary Encoder Magnetic 1280PPR Equivalent & Substitute Parts

Part Overview

The AS5304B-ATSM is a surface-mount magnetic rotary encoder manufactured by ams-OSRAM USA INC. that provides 1280 pulses per revolution with quadrature (incremental) output. The device operates within a 4.5V to 5.5V supply voltage range and utilizes an external magnet actuator configuration without integrated detent or switch functionality.

This part carries a "Not For New Designs" product status designation. Identifying equivalent and substitute components becomes necessary when addressing supply constraints, inventory availability, or design continuity requirements for existing applications.

Substiute Parts

AS5304B-ATSM

ams-OSRAM USA INC.In Stock: 796AS5304B-ATSM Datasheet

Current PartRFQ

AS5304A-ATSM

ams-OSRAM USA INC.In Stock: 3028AS5304A-ATSM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AS5304B-ATSM is determined by strict alignment across the following critical parameters:

Mandatory Matching Criteria:

• Encoder Type: Magnetic
• Output Type: Quadrature (Incremental)
• Pulses per Revolution: 1280
• Voltage - Supply: 4.5V ~ 5.5V
• Actuator Type: External Magnet, Not Included
• Mounting Type: Surface Mount
• Termination Style: SMD (SMT) Tab
• Detent: No
• Built in Switch: No

The AS5304A-ATSM satisfies all mandatory matching criteria and qualifies as a direct substitute. Both parts share the same base product number (AS5304) and maintain identical electrical and mechanical specifications within the parameters provided.

Parameter Comparison

Engineering Selection Recommendations

Both the AS5304B-ATSM and AS5304A-ATSM are designated "Not For New Designs" and carry identical compliance certifications: RoHS Compliant, REACH Unaffected, and EAR99 export classification.

Selection between these parts should be based on inventory availability and supply chain requirements. The AS5304A-ATSM currently maintains higher inventory levels (2969 Pcs) compared to the AS5304B-ATSM (755 Pcs), making it the preferred choice for applications requiring immediate availability or larger order quantities.

Both parts meet identical electrical performance specifications, mechanical mounting requirements, and regulatory compliance standards. No functional differences exist between the two variants within the parameters provided.

Frequently Asked Questions (FAQ)

Q: Can AS5304A-ATSM replace AS5304B-ATSM in existing designs?

A: Yes. Both parts are functionally equivalent across all provided electrical and mechanical parameters. They share identical encoder type, output configuration, pulse resolution, supply voltage range, mounting type, and termination style.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical RoHS Compliance status, REACH Unaffected designation, and EAR99 export classification.

Q: What is the significance of the "Not For New Designs" status?

A: This designation indicates that both parts are legacy components. New designs should evaluate alternative encoder solutions from current product lines. However, for existing applications or design continuity, these parts remain functionally available.

Q: Do these encoders require external components for operation?

A: Yes. Both the AS5304B-ATSM and AS5304A-ATSM utilize external magnet actuators that are not included with the component. The external magnet must be supplied separately and positioned according to manufacturer specifications.

Q: Are the packaging formats identical?

A: Yes. Both parts are supplied in Tape & Reel (TR) packaging with SMD (SMT) Tab termination style, suitable for automated assembly processes.

Q: What is the Moisture Sensitivity Level (MSL) requirement?

A: Both parts carry MSL 3 rating with a 168-hour floor life. Standard moisture control procedures for MSL 3 components must be observed during storage and handling.