TOP242P Equivalent & Substitute Parts

Part Overview

The TOP242P is an offline switch flyback converter IC from Power Integrations' TOPSwitch®-GX series, designed for isolated power supply applications. This 8-DIP package device operates at 66kHz to 132kHz switching frequency with 15W power capability and integrated current limiting, over-temperature, and over-voltage protection.

The TOP242P is classified as Obsolete. Locating equivalent or substitute components is necessary for ongoing production support, maintenance applications, and design continuity where this part is specified in existing systems.

Substiute Parts

TOP242P

Power IntegrationsIn Stock: 1461TOP242P Datasheet

Current PartRFQ

TOP242PN

Power IntegrationsIn Stock: 1754TOP242PN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TOP242P is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Topology: Flyback converter architecture
• Output Isolation: Isolated configuration
• Voltage - Breakdown: 700V rating
• Frequency - Switching: 66kHz ~ 132kHz operating range
• Power (Watts): 15W capability
• Duty Cycle: 66.5%
• Fault Protection: Current Limiting, Over Temperature, Over Voltage
• Control Features: Frequency Control
• Operating Temperature: -40°C ~ 150°C (TJ)
• Package / Case: 8-DIP (0.300", 7.62mm), 7 Leads
• Mounting Type: Through Hole

The TOP242PN is identified as a direct substitute based on identical electrical specifications, topology, power rating, protection features, and package configuration. The primary difference is packaging format (Tube vs. standard) and product status classification.

Parameter Comparison

Engineering Selection Recommendations

TOP242PN as Direct Substitute:

The TOP242PN provides functional and electrical equivalence to the TOP242P across all critical parameters. Both devices share identical topology, power rating, protection features, switching frequency range, and package configuration.

Compliance Considerations:

The TOP242PN carries RoHS Compliant status, whereas the TOP242P is RoHS non-compliant. For applications subject to RoHS requirements, the TOP242PN is the appropriate selection. Both devices maintain REACH Unaffected status and identical ECCN and HTSUS classifications.

Product Status Impact:

The TOP242P is classified as Obsolete, indicating discontinued production and limited availability. The TOP242PN is classified as Not For New Designs, indicating restricted use for new development but continued support for existing applications. For ongoing production of established designs, the TOP242PN represents the available alternative from the manufacturer.

Packaging and Inventory:

The TOP242PN is supplied in Tube packaging format, whereas the TOP242P standard packaging is not specified. Current inventory availability shows 1668 units of TOP242PN in stock versus 1432 units of TOP242P.

Frequently Asked Questions (FAQ)

Q: Can TOP242PN directly replace TOP242P in existing circuit designs?

A: Yes. The TOP242PN provides direct electrical and functional equivalence. Both devices operate at identical switching frequencies (66kHz ~ 132kHz), power ratings (15W), breakdown voltages (700V), duty cycles (66.5%), and include identical fault protection features. The 8-DIP through-hole package configuration is identical, enabling direct PCB substitution without circuit modification.

Q: What is the significance of the Obsolete vs. Not For New Designs status?

A: Obsolete status indicates the TOP242P is no longer manufactured and has limited availability. Not For New Designs status for the TOP242PN indicates the manufacturer continues limited production for existing applications but does not recommend this part for new product development. For ongoing support of established designs using TOP242P, the TOP242PN is the manufacturer's designated alternative.

Q: Does the RoHS compliance difference affect substitution?

A: The TOP242PN is RoHS Compliant while the TOP242P is RoHS non-compliant. For applications or markets requiring RoHS compliance, the TOP242PN is the appropriate selection. Both devices maintain identical electrical specifications and package configuration.

Q: Are there packaging format differences between TOP242P and TOP242PN?

A: The TOP242PN is supplied in Tube packaging, while the TOP242P packaging format is not specified in the standard configuration. Both devices use the same 8-DIP (0.300", 7.62mm) physical package with 7 leads, ensuring mechanical compatibility on PCBs.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by equivalence across topology (Flyback), output isolation (Isolated), voltage rating (700V), switching frequency range (66kHz ~ 132kHz), power capability (15W), duty cycle (66.5%), protection features (Current Limiting, Over Temperature, Over Voltage), control method (Frequency Control), operating temperature range (-40°C ~ 150°C), and package type (8-DIP through-hole). The TOP242PN meets all these criteria.