HEDS-5645#A13 Rotary Encoder Optical 500PPR Equivalent & Substitute Parts

Part Overview

The HEDS-5645#A13 is an optical rotary encoder manufactured by Broadcom Limited, delivering 500 pulses per revolution with quadrature output and index signal. This vertical-mount encoder operates at 5V supply and features an 8mm open center actuator, designed for chassis mount and motor applications with terminal pin termination.

The part is currently active in production status. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain component availability across manufacturing cycles.

Substiute Parts

HEDS-5645#A13

Broadcom LimitedIn Stock: 826HEDS-5645#A13 Datasheet

Current PartRFQ

HEDS-5540#A13

Broadcom LimitedIn Stock: 1244HEDS-5540#A13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HEDS-5645#A13 is determined by strict equivalence across the following critical parameters:

• Encoder Type: Optical
• Output Type: Quadrature with Index (Incremental)
• Pulses per Revolution: 500
• Voltage - Supply: 5V
• Actuator Type: 8mm Open Center
• Mounting Type: Chassis Mount, Motors
• Orientation: Vertical
• Termination Style: Terminal Pins

The HEDS-5540#A13 meets all substitution criteria, sharing identical electrical specifications, mechanical configuration, and output characteristics. Both parts belong to the Broadcom HEDS series and maintain functional interchangeability within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

Both the HEDS-5645#A13 and HEDS-5540#A13 maintain active product status and full compliance with ROHS3 and REACH regulations. Selection between these parts should be based on inventory availability and procurement lead times, as all electrical, mechanical, and regulatory parameters are equivalent.

The HEDS-5540#A13 currently maintains higher inventory levels (1193 units) compared to the HEDS-5645#A13 (771 units), which may influence supply chain planning decisions.

Frequently Asked Questions (FAQ)

Q: Can the HEDS-5540#A13 directly replace the HEDS-5645#A13 in existing designs?

A: Yes. Both encoders share identical specifications across all critical parameters: 500 PPR optical output, 5V supply, quadrature with index format, 8mm open center actuator, vertical orientation, and terminal pin termination. No circuit modifications or mechanical adjustments are required.

Q: Are there differences in packaging or MSL ratings between these parts?

A: No. Both parts are supplied in bulk packaging with MSL rating 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.

Q: What determines substitution eligibility for optical rotary encoders?

A: Substitution requires matching encoder type, output format, pulses per revolution, supply voltage, actuator geometry, mounting configuration, orientation, and termination style. Deviations in any of these parameters eliminate interchangeability.

Q: Do both parts carry the same regulatory certifications?

A: Yes. Both the HEDS-5645#A13 and HEDS-5540#A13 are ROHS3 compliant and REACH unaffected, meeting equivalent environmental and regulatory requirements.

Q: Which part should be selected for new designs?

A: Selection should be based on current inventory availability and supply chain requirements. Both parts are functionally equivalent and maintain active production status.