TFS7701H Equivalent & Substitute Parts

Part Overview

The TFS7701H is an active, production-status Power Management IC (PMIC) manufactured by Power Integrations. It functions as a multi-output DC-DC controller supporting flyback and forward converter topologies with step-up and step-down capability. The device integrates transistor driver output and operates across industrial temperature ranges (-40°C to 150°C junction temperature). This part is specified in the HiperTFS™-2 series and is RoHS compliant with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across the specified parameter set. Substitution becomes necessary due to supply constraints, inventory availability, or design flexibility requirements while maintaining functional equivalence.

Substiute Parts

TFS7701H

Power IntegrationsIn Stock: 1175TFS7701H Datasheet

Current PartRFQ

TFS7708H

Power IntegrationsIn Stock: 1222TFS7708H Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TFS7701H are identified based on strict electrical and mechanical parameter equivalence within the Power Integrations HiperTFS™-2 product family. The substitution criteria are defined by the following parameters:

Electrical Equivalence Parameters:

• Topology: Flyback, Forward Converter
• Function: Step-Up, Step-Down capability
• Output Type: Transistor Driver
• Number of Outputs: 2
• Output Configuration: Positive, Isolation Capable
• Voltage - Supply (Vcc/Vdd): Up to 11.5V
• Frequency - Switching: 66kHz, 132kHz
• Duty Cycle (Max): 63%
• Operating Temperature: -40°C ~ 150°C (TJ)
• Control Features: Enable, Reset

Mechanical & Compliance Equivalence Parameters:

• Package / Case: 16-SSIP, 12 Leads, Exposed Pad, Formed Leads
• Supplier Device Package: eSIP-16F
• Mounting Type: Through Hole
• RoHS Status: RoHS Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected
• ECCN: EAR99

Parts meeting all specified parameters are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

TFS7708H as Direct Substitute for TFS7701H

The TFS7708H is a parametric equivalent substitute for the TFS7701H. All electrical specifications, mechanical dimensions, package configuration, and regulatory compliance parameters are identical across both parts. Both devices are active production parts manufactured by Power Integrations within the HiperTFS™-2 series.

Compliance & Certification Status:

• Both parts carry RoHS Compliant certification
• Both parts maintain REACH Unaffected status
• Both parts are classified under ECCN EAR99
• Both parts carry MSL 1 (Unlimited) moisture sensitivity rating

Inventory & Availability:

• TFS7701H: 1134 Pcs New Original In Stock
• TFS7708H: 1176 Pcs New Original In Stock

Both parts are available in tube packaging and are suitable for through-hole PCB assembly applications. Selection between these parts may be based on inventory availability, supply chain logistics, or procurement lead time requirements without impact to circuit performance or design validation.

Frequently Asked Questions (FAQ)

Q: Can TFS7708H be used as a direct replacement for TFS7701H in existing designs?

A: Yes. The TFS7708H is a parametric equivalent with identical electrical specifications, package configuration, and operating characteristics. No circuit redesign or PCB layout modification is required for substitution.

Q: Are the pin configurations identical between TFS7701H and TFS7708H?

A: Yes. Both parts use the 16-SSIP eSIP-16F package with 12 leads and exposed pad. Pin assignments and functional configurations are identical.

Q: What is the difference between TFS7701H and TFS7708H?

A: Based on provided specifications, no functional or electrical differences exist between these parts. Both are HiperTFS™-2 series controllers with identical topology, output configuration, switching frequency, and operating parameters. Differences, if any, are internal design variations not reflected in the provided parametric data.

Q: Are both parts suitable for industrial temperature applications?

A: Yes. Both TFS7701H and TFS7708H operate across the industrial temperature range of -40°C to 150°C junction temperature, meeting industrial-grade thermal requirements.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special desiccant or controlled humidity requirements.

Q: Are these parts RoHS compliant?

A: Yes. Both TFS7701H and TFS7708H are RoHS Compliant and REACH Unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.

Q: Can these parts be used in isolation-capable applications?

A: Yes. Both parts support positive, isolation-capable output configuration, enabling use in isolated DC-DC converter topologies including flyback and forward converter designs.

Q: What switching frequencies are supported?

A: Both parts support 66kHz and 132kHz switching frequencies with maximum duty cycle of 63%, providing design flexibility for various power conversion applications.