OPI127 Equivalent & Substitute Parts

Part Overview

The OPI127 is a logic output optoisolator featuring 250kbps push-pull, totem pole configuration with 15000VDC isolation rating and single-channel design. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Substiute Parts

OPI127

TT Electronics/Optek TechnologyIn Stock: 649OPI127 Datasheet

Current PartRFQ

OPI127-032

TT Electronics/Optek TechnologyIn Stock: 991OPI127-032 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The OPI127-032 qualifies as a direct substitute based on the following critical parameters:

Electrical Equivalence:

• Identical isolation voltage rating: 15000VDC
• Matching output configuration: Push-Pull, Totem Pole
• Equivalent data rate: 250kbps
• Identical propagation delay specifications: 5µs (Typ)
• Matching rise/fall time: 100ns (Typ)
• Same forward voltage: 1.5V (Max)
• Identical forward current: 25mA (Max)
• Matching supply voltage range: 4.5V ~ 5.5V
• Identical operating temperature range: -55°C ~ 100°C

Mechanical Compatibility:

• Both feature through-hole mounting
• Single-channel configuration maintained

Regulatory Compliance:

• Both ROHS3 compliant
• Both REACH unaffected
• Identical ECCN and HTSUS classifications

The primary distinction is product status: OPI127-032 is active production, whereas OPI127 is obsolete. The OPI127-032 is manufactured by the same supplier (TT Electronics/Optek Technology) and maintains full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The OPI127-032 is the direct equivalent for OPI127 applications. Selection is based on the following factors:

Product Status: OPI127-032 maintains active production status, ensuring continued availability and supply chain reliability. OPI127 is obsolete and subject to discontinuation.

Regulatory Compliance: Both parts maintain identical ROHS3 compliance and REACH unaffected status, satisfying current environmental and regulatory requirements.

Electrical Performance: Complete parameter alignment across isolation voltage, output configuration, data rate, timing characteristics, and supply voltage specifications ensures drop-in compatibility without circuit modification.

Manufacturing Continuity: Both parts originate from the same manufacturer (TT Electronics/Optek Technology), maintaining consistent quality standards and manufacturing processes.

For new designs and production runs, OPI127-032 is the specified component. For field replacements of OPI127-equipped systems, OPI127-032 provides full functional and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can OPI127-032 directly replace OPI127 in existing designs?

A: Yes. OPI127-032 is electrically and mechanically equivalent to OPI127. All critical parameters—isolation voltage, output configuration, data rate, timing, and supply voltage—are identical. Through-hole mounting compatibility is maintained.

Q: What is the primary reason for substitution?

A: OPI127 is classified as obsolete. OPI127-032 is the active production equivalent from the same manufacturer, ensuring long-term component availability and supply chain continuity.

Q: Are there any package differences between OPI127 and OPI127-032?

A: OPI127-032 is specified with Axial packaging (4 leads), while OPI127 packaging details are not specified in the available data. Both maintain through-hole mounting configuration. Physical form factor should be verified against PCB layout requirements.

Q: Do both parts meet current regulatory standards?

A: Yes. Both OPI127 and OPI127-032 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the isolation voltage rating for these optoisolators?

A: Both OPI127 and OPI127-032 feature 15000VDC isolation voltage rating, suitable for high-voltage isolation applications.

Q: Are the timing characteristics identical between the two parts?

A: Yes. Propagation delay (5µs typical) and rise/fall time (100ns typical) are identical, ensuring equivalent signal integrity and timing performance in circuit applications.