OPI150TX Equivalent & Substitute Parts

Part Overview

The OPI150TX is an optoisolator transistor with base output manufactured by TT Electronics/Optek Technology, designed for high-voltage isolation applications requiring 50000VDC isolation capability. This component features a single-channel configuration with axial through-hole mounting and is classified as obsolete. Due to its obsolete status, identifying functionally compatible alternatives is essential for ongoing system maintenance and new design implementations.

Substiute Parts

OPI150TX

TT Electronics/Optek TechnologyIn Stock: 822OPI150TX Datasheet

Current PartRFQ

OPI150

TT Electronics/Optek TechnologyIn Stock: 1009OPI150 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OPI150TX is determined by the following critical parameters:

• Voltage - Isolation: 50000VDC (primary isolation requirement)
• Number of Channels: 1 (single-channel configuration)
• Output Type: Transistor with Base (functional output topology)
• Package / Case: Axial - 5 Leads (mechanical and electrical interface compatibility)
• Mounting Type: Through Hole (PCB integration method)
• Current Transfer Ratio (Min): 10% @ 10mA (minimum performance threshold)

The OPI150 qualifies as a substitute based on matching isolation voltage, channel count, output type, package configuration, and mounting method. Both components maintain the same fundamental electrical interface and mechanical form factor required for direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The OPI150 is the manufacturer-recommended substitute for the obsolete OPI150TX. Both components are ROHS3 compliant and manufactured by the same supplier, ensuring regulatory consistency. The OPI150 maintains active product status, providing assured long-term availability and supply chain stability compared to the obsolete OPI150TX.

Selection between these components depends on application-specific requirements within the parameter ranges provided. The OPI150TX supports higher maximum output voltage (50V vs. 30V) and output current (50mA vs. 25mA), along with an extended operating temperature range (-65°C to 125°C vs. -40°C to 85°C). The OPI150 offers improved forward voltage characteristics (1.3V vs. 1.4V) and lower saturation voltage (500mV vs. 300mV).

Frequently Asked Questions (FAQ)

Q: Can the OPI150 directly replace the OPI150TX in existing designs?

A: The OPI150 shares identical isolation voltage, channel count, output type, and axial 5-lead package configuration with the OPI150TX. Direct mechanical and electrical interface compatibility is established. Application-specific performance requirements must be evaluated against the parameter differences listed in the comparison table.

Q: What are the key parameter differences between OPI150TX and OPI150?

A: The primary differences are maximum output voltage (50V vs. 30V), maximum output current (50mA vs. 25mA), operating temperature range (-65°C to 125°C vs. -40°C to 85°C), and Vce saturation voltage (300mV vs. 500mV). Both maintain 50000VDC isolation and 10% minimum current transfer ratio.

Q: Why is the OPI150TX classified as obsolete?

A: The OPI150TX is listed as obsolete by the manufacturer. The OPI150 is the active equivalent product recommended for new designs and ongoing procurement.

Q: Are both components RoHS compliant?

A: Both the OPI150TX and OPI150 are ROHS3 compliant, meeting current environmental and regulatory standards.

Q: What mounting considerations apply to these components?

A: Both components use through-hole mounting with an axial 5-lead package configuration, requiring compatible PCB footprints and soldering processes for axial lead components.