AS5145-HSST Rotary Encoder Magnetic 1024PPR Equivalent & Substitute Parts

Part Overview

The AS5145-HSST is a surface-mount magnetic rotary encoder manufactured by ams-OSRAM USA INC. with 1024 pulses per revolution and quadrature incremental output. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The encoder operates across dual voltage ranges (3V–3.6V and 4.5V–5.5V) and meets automotive-grade specifications with AEC-Q100 qualification.

Substiute Parts

AS5145-HSST

ams-OSRAM USA INC.In Stock: 1023AS5145-HSST Datasheet

Current PartRFQ

AS5145A-HSST

ams-OSRAM USA INC.In Stock: 1067AS5145A-HSST Datasheet

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AS5145A-HSST-500

ams-OSRAM USA INC.In Stock: 767AS5145A-HSST-500 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the AS5145-HSST is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

• Encoder Type: Magnetic
• Output Type: Quadrature (Incremental)
• Pulses per Revolution: 1024
• Voltage Supply Range: 3V–3.6V, 4.5V–5.5V
• Mounting Type: Surface Mount
• Termination Style: SMD (SMT) Tab
• Grade: Automotive
• Qualification: AEC-Q100

Variable Parameters (Allowable Differences):

• Product Status: Obsolete to Active transition
• Packaging: Bulk to Tape & Reel (TR)
• Moisture Sensitivity Level: 3 to 1 (improved specification)
• RoHS Status: Not specified to RoHS Compliant

The AS5145A-HSST and AS5145A-HSST-500 maintain identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

AS5145A-HSST: This substitute maintains identical electrical and mechanical specifications to the obsolete AS5145-HSST while offering active product status. It provides RoHS compliance and equivalent moisture sensitivity performance. Selection is appropriate for applications requiring bulk packaging and standard MSL-3 handling procedures.

AS5145A-HSST-500: This variant offers the same functional equivalence as AS5145A-HSST with enhanced moisture sensitivity (MSL-1, unlimited shelf life) and Tape & Reel packaging. Selection is appropriate for high-volume production environments, extended storage requirements, and automated assembly processes.

Both substitute parts satisfy automotive-grade requirements and AEC-Q100 qualification standards, ensuring compatibility with automotive and industrial control applications requiring 1024 PPR magnetic quadrature encoders.

Frequently Asked Questions (FAQ)

Q: Can AS5145A-HSST directly replace AS5145-HSST in existing designs?

A: Yes. Both parts share identical electrical specifications (1024 PPR, quadrature output, 3V–3.6V and 4.5V–5.5V supply ranges), mechanical mounting (surface mount, SMD tab termination), and automotive qualification (AEC-Q100). The primary difference is product status: AS5145A-HSST is active while AS5145-HSST is obsolete.

Q: What is the difference between AS5145A-HSST and AS5145A-HSST-500?

A: Both parts are electrically and mechanically identical. The differences are packaging and moisture sensitivity. AS5145A-HSST-500 is supplied in Tape & Reel format with MSL-1 rating (unlimited shelf life), while AS5145A-HSST is supplied in bulk with MSL-3 rating (168-hour shelf life). Select AS5145A-HSST-500 for high-volume production and extended storage; select AS5145A-HSST for lower-volume applications with standard handling.

Q: Are there any compliance differences between the main part and substitutes?

A: Both substitute parts are RoHS Compliant, whereas the main part (AS5145-HSST) does not specify RoHS status. All three parts maintain REACH Unaffected status and automotive-grade classification with AEC-Q100 qualification.

Q: Does moisture sensitivity level affect functional performance?

A: Moisture sensitivity level (MSL) determines storage and handling requirements, not functional performance. MSL-3 (AS5145A-HSST) requires reflow within 168 hours of moisture exposure. MSL-1 (AS5145A-HSST-500) has unlimited shelf life. Both parts perform identically once soldered.

Q: What external magnet specifications apply to these encoders?

A: All three parts require an external magnet (not included). Magnet specifications are not provided in the component data. Consult the encoder datasheet or application notes for magnet type, strength, and mounting requirements.