HSDL-5420#021 Equivalent & Substitute Parts

Part Overview

The HSDL-5420#021 is a photodiode optical sensor manufactured by Lite-On Inc., designed for infrared detection at 875nm wavelength. This component is classified as obsolete, making equivalent or substitute parts necessary for new designs and ongoing production requirements. The sensor features a 2-SMD surface mount package with a 56° viewing angle and 7.5ns response time, suitable for applications requiring fast photodiode detection in the near-infrared spectrum.

Substiute Parts

HSDL-5420#021

Lite-On Inc.In Stock: 1132HSDL-5420#021 Datasheet

Current PartRFQ

LTE-C9506B

Lite-On Inc.In Stock: 88889LTE-C9506B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LTE-C9506B is identified as a manufacturer-recommended substitute for the HSDL-5420#021. Substitution eligibility is determined by the following critical parameters:

Wavelength Compatibility: The HSDL-5420#021 operates at 875nm, while the LTE-C9506B operates at 850nm. Both wavelengths fall within the near-infrared spectrum (770nm ~ 1000nm spectral range) and are compatible for applications requiring infrared detection in this band.

Operating Temperature Range: Both components support -40°C ~ 85°C operating temperature, ensuring thermal compatibility across the same environmental conditions.

Surface Mount Technology: Both components use surface mount packaging, maintaining PCB assembly compatibility.

RoHS Compliance: Both components are ROHS3 compliant, meeting environmental and regulatory requirements.

Moisture Sensitivity: The HSDL-5420#021 has MSL 2A (4 Weeks), while the LTE-C9506B has MSL 1 (Unlimited). The substitute offers superior moisture handling characteristics.

Parameter Comparison

Engineering Selection Recommendations

The LTE-C9506B is an active product from the same manufacturer (Lite-On Inc.), providing supply continuity for applications currently using the obsolete HSDL-5420#021. Both components meet ROHS3 compliance requirements and operate across identical temperature ranges (-40°C ~ 85°C).

The substitute offers improved moisture sensitivity characteristics (MSL 1 vs. MSL 2A), reducing handling and storage constraints during manufacturing and logistics. The 25nm wavelength difference (850nm vs. 875nm) remains within the near-infrared detection spectrum and is suitable for applications where spectral sensitivity in this band is required.

Package differences exist between the two components: the HSDL-5420#021 uses a 2-SMD Yoke Bend configuration, while the LTE-C9506B uses a 1206 (3216 Metric) package. PCB layout and footprint modifications are required when implementing this substitution.

Frequently Asked Questions (FAQ)

Q: Can the LTE-C9506B directly replace the HSDL-5420#021 without PCB modifications?

A: No. The HSDL-5420#021 uses a 2-SMD Yoke Bend package, while the LTE-C9506B uses a 1206 (3216 Metric) package. PCB footprint redesign is required for component placement and electrical connection.

Q: What is the wavelength difference between these components, and does it affect functionality?

A: The HSDL-5420#021 operates at 875nm, while the LTE-C9506B operates at 850nm. Both wavelengths are within the near-infrared spectrum (770nm ~ 1000nm range). The 25nm difference is acceptable for applications requiring infrared detection in this band, though spectral response characteristics should be evaluated for specific optical system requirements.

Q: Why is the HSDL-5420#021 listed as obsolete?

A: The HSDL-5420#021 has reached end-of-life status. The LTE-C9506B, as an active product, provides continued availability and supply security for new designs and production requirements.

Q: What are the moisture sensitivity implications of this substitution?

A: The HSDL-5420#021 has MSL 2A (4 Weeks), requiring controlled storage and handling. The LTE-C9506B has MSL 1 (Unlimited), eliminating moisture sensitivity constraints and simplifying supply chain management and manufacturing processes.

Q: Are both components RoHS compliant?

A: Yes. Both the HSDL-5420#021 and LTE-C9506B are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and distribution.