AS33-M50M-K74 Equivalent & Substitute Parts

Part Overview

The AS33-M50M-K74 is a 33mm magnetic encoder module manufactured by Broadcom Limited, designed for chassis mount and motor applications with RS-485 output. This component operates within a 7V to 12.5V supply voltage range and features vertical orientation with connector-based termination. The part is currently classified as obsolete, making identification of compatible substitute components essential for system maintenance, redesign, and procurement planning.

Substiute Parts

AS33-M50M-K74

Broadcom LimitedIn Stock: 969AS33-M50M-K74 Datasheet

Current PartRFQ

AS33-M42M-K74

Broadcom LimitedIn Stock: 843AS33-M42M-K74 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AS33-M50M-K74 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Encoder Type: Magnetic
• Output Type: RS-485
• Voltage Supply Range: 7V ~ 12.5V
• Mounting Type: Chassis Mount, Motors
• Orientation: Vertical
• Termination Style: Connector
• Actuator Type: External Magnet, Not Included
• Detent: No
• Built in Switch: No
• RoHS Compliance: ROHS3 Compliant

The AS33-M42M-K74 satisfies all mandatory substitution criteria. While the pulses per revolution specification differs (AS33-M50M-K74 is fixed at 50 bits; AS33-M42M-K74 is programmable at 42 bits), both components maintain identical electrical interfaces, mechanical mounting configurations, and environmental compliance standards required for direct substitution in RS-485 networked encoder applications.

Parameter Comparison

Engineering Selection Recommendations

The AS33-M42M-K74 is the designated substitute for the obsolete AS33-M50M-K74. Selection is supported by the following engineering factors:

Product Status: The AS33-M42M-K74 maintains active product status with Broadcom Limited, ensuring ongoing availability, technical support, and supply chain continuity. The AS33-M50M-K74 is obsolete and no longer manufactured.

Compliance & Certification: Both components are ROHS3 compliant. The AS33-M42M-K74 carries ECCN classification EAR99 and HTSUS code 8543.70.4500, indicating standard commercial availability without export restrictions.

Electrical & Mechanical Compatibility: Identical supply voltage range (7V ~ 12.5V), RS-485 output protocol, connector termination, and mounting configuration ensure direct functional substitution in existing system designs.

Resolution Consideration: The AS33-M42M-K74 features programmable pulse resolution (42 bits) compared to the fixed 50-bit resolution of the AS33-M50M-K74. System firmware or controller configuration may require adjustment to accommodate the alternative resolution specification.

Frequently Asked Questions (FAQ)

Q: Can the AS33-M42M-K74 directly replace the AS33-M50M-K74 in existing designs?

A: Yes. Both components share identical electrical interfaces (RS-485, 7V–12.5V supply), mechanical mounting (chassis mount, vertical orientation, connector termination), and environmental compliance (ROHS3). The primary design consideration is pulse resolution: the substitute operates at 42 bits (programmable) versus the original 50 bits (fixed).

Q: What is the difference between fixed and programmable pulse resolution?

A: The AS33-M50M-K74 provides a fixed 50-bit pulse output per revolution. The AS33-M42M-K74 allows programmable configuration of pulse resolution at 42 bits. System controllers must be configured to accept the alternative resolution specification.

Q: Are there packaging differences between these parts?

A: The AS33-M50M-K74 packaging specification is not provided in available documentation. The AS33-M42M-K74 is supplied in tray packaging. Confirm packaging requirements with your procurement or supply chain team.

Q: Why is the AS33-M50M-K74 obsolete?

A: The AS33-M50M-K74 has been discontinued by Broadcom Limited. The AS33-M42M-K74 represents the current active product line for this encoder category and is the recommended substitute for new designs and system maintenance.

Q: Is the AS33-M42M-K74 available in stock?

A: Current inventory data indicates 758 pieces of the AS33-M42M-K74 are available as new original stock. Verify current availability with your component supplier.

Q: Do both parts require an external magnet actuator?

A: Yes. Both the AS33-M50M-K74 and AS33-M42M-K74 require an external magnet actuator, which is not included with either component. Ensure your system design includes the appropriate external magnet assembly.