TNY253G Equivalent & Substitute Parts

Part Overview

The TNY253G is an offline switch flyback converter IC manufactured by Power Integrations, part of the TinySwitch® series. This 8-SMD surface mount device operates at 44kHz switching frequency with 2W power output and 700V breakdown voltage, designed for isolated flyback topology applications. The TNY253G is classified as Obsolete, making identification of functionally equivalent substitute parts essential for ongoing production support and design continuity.

Substiute Parts

TNY253G

Power IntegrationsIn Stock: 3092TNY253G Datasheet

Current PartRFQ

TNY253GN-TL

Power IntegrationsIn Stock: 31250TNY253GN-TL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TNY253G is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Topology: Flyback
• Output Isolation: Isolated
• Voltage - Breakdown: 700V
• Frequency - Switching: 44kHz
• Power (Watts): 2 W
• Duty Cycle: 68%
• Fault Protection: Current Limiting, Over Temperature
• Control Features: EN
• Operating Temperature: -40°C ~ 150°C (TJ)
• Package / Case: 8-SMD, Gull Wing
• Mounting Type: Surface Mount
• Internal Switch(s): Yes

The TNY253GN-TL qualifies as a direct substitute for the TNY253G. Both devices share identical electrical specifications, thermal operating range, protection features, and physical packaging. The primary distinction lies in product status classification and RoHS compliance status, with TNY253GN-TL offering improved regulatory compliance for new applications.

Parameter Comparison

Engineering Selection Recommendations

For Existing Production Support: The TNY253GN-TL serves as the direct functional equivalent for TNY253G applications. Both devices deliver identical electrical performance across all critical parameters including breakdown voltage, switching frequency, power output, and thermal operating range. Selection between these parts should be based on regulatory compliance requirements and supply chain availability.

Regulatory Compliance Considerations: TNY253G carries RoHS non-compliant status, while TNY253GN-TL achieves RoHS Compliance. For applications subject to RoHS directives or customer compliance mandates, TNY253GN-TL is the appropriate selection. Both parts maintain REACH Unaffected status and EAR99 export classification.

Product Status Impact: TNY253G is classified as Obsolete, indicating discontinued manufacturing and limited long-term availability. TNY253GN-TL is designated Not For New Designs, reflecting its legacy status within the TinySwitch® product line. For new design initiatives, evaluation of current-generation Power Integrations offline switch products is recommended, though TNY253GN-TL remains functionally suitable for existing circuit topologies.

Packaging and Supply Chain: TNY253GN-TL is available in Cut Tape (CT) and Digi-Reel® packaging options with significantly higher inventory levels (31,200 pcs vs. 3,027 pcs), providing improved procurement flexibility and lead time assurance.

Frequently Asked Questions (FAQ)

Q: Can TNY253GN-TL directly replace TNY253G in existing designs? A: Yes. TNY253GN-TL is electrically and mechanically equivalent to TNY253G across all specified parameters. No circuit modifications are required for substitution. Both devices operate at 44kHz switching frequency, deliver 2W power output, and provide identical fault protection features.

Q: What is the difference between TNY253G and TNY253GN-TL? A: The primary differences are product status classification and RoHS compliance. TNY253G is Obsolete and RoHS non-compliant, while TNY253GN-TL is Not For New Designs and RoHS Compliant. Electrical specifications, thermal ratings, and package dimensions are identical.

Q: Are there packaging differences between these parts? A: TNY253G is supplied in standard packaging, while TNY253GN-TL offers Cut Tape (CT) and Digi-Reel® packaging options. Both use 8-SMD, Gull Wing surface mount packages with identical physical dimensions and pin configurations.

Q: Which part should I select for new applications? A: For new designs, neither TNY253G nor TNY253GN-TL is recommended due to their legacy status. However, if circuit topology requires these specific electrical characteristics (700V breakdown, 44kHz operation, 2W output), TNY253GN-TL provides better regulatory compliance and supply availability than TNY253G.

Q: Is TNY253GN-TL suitable for RoHS-compliant applications? A: Yes. TNY253GN-TL carries RoHS Compliant certification, making it suitable for applications subject to RoHS directives. TNY253G does not meet RoHS requirements.

Q: What is the moisture sensitivity level for these parts? A: Both TNY253G and TNY253GN-TL carry MSL 4 rating, requiring storage at 72 hours maximum exposure time before reflow soldering. Standard moisture control procedures apply during handling and assembly.

Q: Are there any thermal or operating range differences? A: No. Both parts operate across the identical temperature range of -40°C to 150°C (junction temperature), with matching thermal characteristics and fault protection thresholds.