TFS760HG Equivalent & Substitute Parts Reference

Part Overview

The TFS760HG is an offline converter IC manufactured by Power Integrations, designed for isolated flyback and forward topology applications with 66kHz switching frequency and 305W power handling capability. This component operates as a complete power management solution with integrated switching functionality, fault protection, and enable control features.

The TFS760HG is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

TFS760HG

Power IntegrationsIn Stock: 15526TFS760HG Datasheet

Current PartRFQ

TFS7704H

Power IntegrationsIn Stock: 1992TFS7704H Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TFS760HG is determined by the following critical parameters:

Topology Compatibility: Both the main part and substitute must support Flyback and Forward converter topologies to maintain circuit functionality.

Switching Frequency: The substitute must operate at 66kHz to ensure compatibility with existing transformer and filter designs.

Output Isolation: The substitute must provide isolated output capability to maintain electrical isolation requirements in the application.

Package and Mounting: The substitute must use 16-SSIP through-hole package with exposed pad and formed leads to ensure mechanical and electrical compatibility with existing PCB layouts.

Operating Temperature Range: The substitute must support the full -40°C to 150°C temperature range to maintain performance across all operating conditions.

Compliance Standards: Both RoHS compliance and REACH unaffected status must be maintained for regulatory continuity.

Control Features: The substitute must include Enable (EN) control functionality for equivalent circuit control capability.

The TFS7704H meets these substitution criteria as an active product within the HiperTFS™-2 series, offering compatible topology, frequency, isolation, package, temperature range, and compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TFS760HG is classified as obsolete, making the TFS7704H a necessary alternative for new procurement and ongoing production support. The TFS7704H maintains active product status within Power Integrations' current portfolio.

Compliance and Certification: Both components maintain identical RoHS compliance and REACH unaffected status, ensuring regulatory continuity in applications subject to environmental and hazardous substance restrictions.

Supply Chain Availability: The TFS7704H demonstrates current inventory availability (1900 pcs new original in stock) compared to the obsolete status of the TFS760HG, supporting long-term design continuity and production scheduling.

Package and Mounting Compatibility: Both components utilize identical 16-SSIP through-hole packages with exposed pads and formed leads, enabling direct PCB layout compatibility without redesign requirements.

Topology and Frequency Alignment: The TFS7704H supports the same Flyback and Forward converter topologies with 66kHz switching frequency capability, maintaining functional equivalence in isolated power conversion applications.

Temperature Range Equivalence: Both components operate across the full -40°C to 150°C junction temperature range, ensuring performance consistency across industrial and extended temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the TFS7704H directly replace the TFS760HG in existing designs?

A: The TFS7704H is compatible with existing TFS760HG designs based on matching topology, switching frequency, isolation capability, package type, and operating temperature range. However, the supply voltage specification for the TFS7704H (up to 11.5V) has a narrower upper limit compared to the TFS760HG (11.1V ~ 13.4V). Applications operating above 11.5V require circuit evaluation to confirm compatibility.

Q: What are the key differences between the TFS760HG and TFS7704H?

A: The primary differences are: (1) Product status—TFS760HG is obsolete while TFS7704H is active; (2) Series designation—TFS760HG belongs to HiperTFS® while TFS7704H belongs to HiperTFS™-2; (3) Supply voltage range—TFS7704H has a narrower upper limit at 11.5V; (4) Duty cycle maximum—TFS760HG specifies 70% while TFS7704H specifies 63%; (5) Package variant—eSIP-16B versus eSIP-16F within the same 16-SSIP family; (6) Control features—TFS7704H includes additional Reset functionality.

Q: Are the eSIP-16B and eSIP-16F packages interchangeable?

A: Both packages are variants within the 16-SSIP through-hole family with identical lead count (12 leads), exposed pad configuration, and formed lead design. They are mechanically and electrically compatible for PCB mounting purposes.

Q: Does the TFS7704H support the same fault protection features?

A: The TFS760HG specifies Current Limiting, Over Temperature, Over Voltage, and Short Circuit protection. The TFS7704H specifications provided do not explicitly detail fault protection features. Applications requiring specific fault protection confirmation should reference detailed datasheets for both components.

Q: What is the significance of the duty cycle difference between these components?

A: The TFS760HG specifies 70% maximum duty cycle while the TFS7704H specifies 63% maximum duty cycle. Applications designed for the TFS760HG operating near or at 70% duty cycle may require circuit adjustment when substituting the TFS7704H to remain within its 63% maximum specification.

Q: Are both components suitable for isolated power conversion applications?

A: Yes. Both the TFS760HG (Isolated output) and TFS7704H (Isolation Capable output) support isolated power conversion topologies, maintaining electrical isolation requirements in flyback and forward converter designs.

Q: What inventory considerations apply to this substitution?

A: The TFS760HG is obsolete with existing inventory of 15,425 pcs. The TFS7704H is an active product with current inventory of 1,900 pcs. For new designs and long-term production, the TFS7704H provides supply chain continuity and ongoing manufacturer support.