TOP247Y Equivalent & Substitute Parts

Part Overview

The TOP247Y is an offline flyback converter IC from Power Integrations' TOPSwitch®-GX series, designed for isolated power supply applications. This component integrates a high-voltage switch with control circuitry in a TO-220-7 package, delivering up to 165 W output power with built-in protection features including current limiting, over-temperature, and over-voltage protection.

The TOP247Y is classified as Obsolete, which necessitates identification of functionally equivalent substitute components for ongoing design support and production continuity. The primary substitute within the same product family is the TOP247YN, which maintains identical electrical and mechanical specifications while offering improved compliance status.

Substiute Parts

TOP247Y

Power IntegrationsIn Stock: 1609TOP247Y Datasheet

Current PartRFQ

TOP247YN

Power IntegrationsIn Stock: 34266TOP247YN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TOP247Y is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Topology: Flyback converter architecture
• Voltage - Breakdown: 700V maximum rating
• Power Output: 165 W nominal capacity
• Frequency - Switching: 66 kHz ~ 132 kHz operating range
• Duty Cycle: 66.5%
• Output Isolation: Isolated configuration
• Fault Protection: Current Limiting, Over Temperature, Over Voltage
• Control Features: Frequency Control

Mechanical Equivalence Criteria:

• Package / Case: TO-220-7 Formed Leads, 6 Leads
• Mounting Type: Through Hole
• Operating Temperature Range: -40°C ~ 150°C (TJ)
• Moisture Sensitivity Level: 1 (Unlimited)

The TOP247YN qualifies as a direct substitute because it maintains identical electrical and mechanical specifications across all parameters listed above. The primary distinction between TOP247Y and TOP247YN is packaging format (bulk versus tube) and compliance status (RoHS non-compliant versus RoHS Compliant).

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs Using TOP247Y:

The TOP247YN serves as the direct functional equivalent for the obsolete TOP247Y. Both components share identical electrical performance characteristics, mechanical dimensions, and thermal specifications. The TOP247YN is available in higher inventory quantities (34,242 pcs versus 1,518 pcs) and offers improved supply chain stability.

Compliance Considerations:

The TOP247Y is RoHS non-compliant, while TOP247YN is RoHS Compliant. Organizations subject to RoHS regulations or customer requirements mandating RoHS compliance must transition to TOP247YN. The TOP247YN maintains full electrical and mechanical compatibility, requiring no circuit redesign or PCB layout modifications.

Product Status Impact:

The TOP247Y is classified as Obsolete, indicating discontinued manufacturing and limited availability. The TOP247YN is classified as Not For New Designs, indicating restricted availability but continued support for existing applications. For production continuity, TOP247YN is the appropriate selection.

Packaging and Logistics:

TOP247Y is supplied in bulk packaging, while TOP247YN is supplied in tube packaging. Tube packaging provides improved component protection during storage and handling. No technical performance difference exists between packaging formats.

Frequently Asked Questions (FAQ)

Q: Can TOP247YN be used as a direct replacement for TOP247Y in existing circuit designs?

A: Yes. TOP247YN is electrically and mechanically identical to TOP247Y across all specified parameters including topology, voltage rating, power output, switching frequency, duty cycle, protection features, package dimensions, and operating temperature range. No circuit modifications or PCB layout changes are required.

Q: What is the primary reason to substitute TOP247Y with TOP247YN?

A: The TOP247Y is classified as Obsolete with limited inventory (1,518 pcs). TOP247YN provides production continuity with significantly higher availability (34,242 pcs) and RoHS Compliant status, which is required for many applications and regulatory jurisdictions.

Q: Are there any electrical performance differences between TOP247Y and TOP247YN?

A: No. Both components operate at identical specifications: 700V breakdown voltage, 165 W power output, 66 kHz ~ 132 kHz switching frequency, 66.5% duty cycle, and identical fault protection and control features.

Q: Does the packaging difference between TOP247Y (bulk) and TOP247YN (tube) affect performance?

A: No. Packaging format affects only logistics, storage, and handling. Electrical and mechanical performance is identical. Tube packaging provides enhanced component protection during distribution and storage.

Q: Is TOP247YN suitable for new design applications?

A: TOP247YN is classified as Not For New Designs. However, it remains the appropriate substitute for existing TOP247Y designs requiring production continuity. For new designs, consult Power Integrations' current product recommendations.

Q: What are the key parameters that determine substitution eligibility for TOP247Y?

A: Substitution eligibility is determined by equivalence across: topology (Flyback), voltage rating (700V), power output (165 W), switching frequency (66 kHz ~ 132 kHz), duty cycle (66.5%), output isolation (Isolated), fault protection (Current Limiting, Over Temperature, Over Voltage), control features (Frequency Control), package type (TO-220-7), and operating temperature range (-40°C ~ 150°C).

Q: What is the moisture sensitivity level for both TOP247Y and TOP247YN?

A: Both components have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.