TNY268P Equivalent & Substitute Parts

Part Overview

The TNY268P is an offline switch flyback converter IC from Power Integrations' TinySwitch®-II series, designed for isolated power supply applications. This device integrates a 700V internal switch with comprehensive fault protection including current limiting, open loop, over temperature, and short circuit protection. The TNY268P operates at a fixed switching frequency of 132kHz with a 65% duty cycle, delivering up to 23W of output power.

The TNY268P is classified as Obsolete. Locating equivalent substitute parts is necessary for design continuity, inventory replenishment, and new production builds where original stock availability is limited or depleted.

Substiute Parts

TNY268P

Power IntegrationsIn Stock: 7590TNY268P Datasheet

Current PartRFQ

TNY268PN

Power IntegrationsIn Stock: 22448TNY268PN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TNY268P is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Topology: Flyback converter architecture
• Output Isolation: Isolated configuration
• Voltage - Breakdown: 700V rating
• Frequency - Switching: 132kHz fixed frequency
• Power Output: 23W capability
• Duty Cycle: 65% operation
• Fault Protection: Current Limiting, Open Loop, Over Temperature, Short Circuit
• Control Features: EN (Enable) control
• Operating Temperature Range: -40°C to 150°C (TJ)
• Package / Case: 8-DIP (0.300", 7.62mm), 7 Leads
• Mounting Type: Through Hole

The TNY268P has one direct equivalent substitute: TNY268PN. This part maintains identical electrical specifications and mechanical packaging while differing only in product status classification and RoHS compliance status. The TNY268PN is packaged in Tube format versus the TNY268P's unspecified packaging.

Parameter Comparison

Engineering Selection Recommendations

TNY268PN as Direct Substitute:

The TNY268PN is the direct equivalent substitute for TNY268P. Both parts share identical electrical and mechanical specifications across all critical parameters including topology, voltage rating, switching frequency, power output, duty cycle, fault protection, control features, operating temperature range, and package configuration.

The primary distinction between TNY268P and TNY268PN is product lifecycle status and regulatory compliance:

• TNY268P is classified as Obsolete, indicating end-of-life status with no further manufacturing or support.
• TNY268PN is classified as Not For New Designs, indicating limited availability and restricted use for new product development.
• TNY268PN carries RoHS Compliant certification, whereas TNY268P is RoHS non-compliant.

For applications requiring RoHS compliance or where TNY268P inventory is unavailable, TNY268PN provides electrical and mechanical compatibility. Both parts are subject to availability constraints due to their obsolete or restricted status within the TinySwitch®-II product line.

Frequently Asked Questions (FAQ)

Q: Can TNY268PN be used as a direct replacement for TNY268P in existing designs?

A: Yes. TNY268PN is electrically and mechanically equivalent to TNY268P. All critical parameters including topology, voltage rating, switching frequency, power output, duty cycle, fault protection, control features, operating temperature range, and package configuration are identical. The parts are pin-compatible and functionally interchangeable in 8-DIP through-hole applications.

Q: What is the difference between TNY268P and TNY268PN?

A: The parts differ in product status and RoHS compliance. TNY268P is Obsolete and RoHS non-compliant. TNY268PN is Not For New Designs and RoHS Compliant. Electrically and mechanically, both parts are identical.

Q: Are there other TinySwitch®-II alternatives to TNY268P?

A: The provided data identifies TNY268PN as the direct substitute. Other TinySwitch®-II variants exist within the product line but are not listed as direct equivalents for TNY268P in this reference.

Q: What packaging formats are available for TNY268PN?

A: TNY268PN is supplied in Tube packaging format. Both TNY268P and TNY268PN use the same 8-DIP (0.300", 7.62mm) package with 7 leads and through-hole mounting.

Q: Is TNY268PN suitable for new product designs?

A: TNY268PN is classified as Not For New Designs. This designation indicates restricted availability and limited support for new development. For new designs, consultation with Power Integrations regarding current TinySwitch®-II alternatives is recommended based on application requirements.

Q: What are the key electrical parameters that define TNY268P substitutability?

A: Substitution is determined by matching: 700V breakdown voltage, 132kHz switching frequency, 23W power output, 65% duty cycle, isolated flyback topology, and comprehensive fault protection (current limiting, open loop, over temperature, short circuit). The 8-DIP through-hole package and -40°C to 150°C operating temperature range are the mechanical and thermal requirements.