UCC25706P Equivalent & Substitute Parts

Part Overview

The UCC25706P is an offline switch controller IC designed for power management applications supporting Boost, Flyback, and Forward converter topologies. Manufactured by Texas Instruments, this 8-PDIP through-hole component operates at 1MHz switching frequency with integrated current limiting fault protection. The part is classified as obsolete, making identification of functional equivalents essential for design continuity and procurement planning.

Substiute Parts

UCC25706P

Texas InstrumentsIn Stock: 958UCC25706P Datasheet

Current PartRFQ

UCC25706D

UnitrodeIn Stock: 2148UCC25706D Datasheet

MFR RecommendedRFQ

UCC35706P

Texas InstrumentsIn Stock: 2443UCC35706P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UCC25706P are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Topology support: Boost, Flyback, Forward
• Voltage supply range: 8V ~ 15V
• Startup voltage: 12V
• Switching frequency: 1MHz
• Duty cycle: 93%
• Fault protection: Current Limiting
• Output isolation: Isolated
• Operating temperature range: -55°C ~ 150°C (TJ)

Substitution Categories:

MFR Recommended Substitute (UCC25706D): Identical electrical specifications with package variation. Differs only in mounting technology (Surface Mount 8-SOIC vs. Through Hole 8-DIP) and product status (Active vs. Obsolete).

Parametric Equivalent (UCC35706P): Identical electrical specifications and package format (8-DIP Through Hole). Differs in base product number and product status (Obsolete). Maintains all functional parameters required for direct substitution in through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole PCB Designs: UCC35706P provides parametric equivalence with identical package format (8-DIP) and electrical specifications. Both UCC25706P and UCC35706P share obsolete status; however, UCC35706P maintains ROHS3 compliance and equivalent inventory availability (2402 Pcs vs. 865 Pcs).

For Surface-Mount PCB Designs: UCC25706D is the manufacturer-recommended substitute, offering active product status with full electrical parameter compatibility. The 8-SOIC package requires PCB layout modification but eliminates obsolescence concerns. UCC25706D maintains ECCN and HTSUS classifications consistent with the original part.

Compliance Considerations: All three parts maintain EAR99 ECCN classification and identical HTSUS codes (8542.39.0001). UCC25706P and UCC35706P are ROHS3 compliant. UCC25706D compliance status is not specified in available data.

Frequently Asked Questions (FAQ)

Q: Can UCC25706D replace UCC25706P in existing through-hole designs? A: UCC25706D has identical electrical specifications but uses 8-SOIC surface-mount packaging versus the 8-DIP through-hole package of UCC25706P. PCB layout and assembly process modifications are required.

Q: What is the primary advantage of UCC35706P over UCC25706P? A: UCC35706P maintains active availability with higher inventory (2402 Pcs) compared to UCC25706P (865 Pcs), while preserving identical through-hole 8-DIP packaging and all electrical parameters.

Q: Are all three parts electrically interchangeable? A: Yes, all three parts (UCC25706P, UCC25706D, UCC35706P) are electrically interchangeable when topology, voltage supply, switching frequency, duty cycle, fault protection, and operating temperature requirements are met. Package and mounting type differences determine physical compatibility.

Q: Which substitute is recommended for new designs? A: UCC25706D is the manufacturer-recommended substitute due to active product status. For through-hole-only designs, UCC35706P provides equivalent functionality with identical packaging.

Q: Do all parts support the same converter topologies? A: Yes, all three parts support Boost, Flyback, and Forward converter topologies with identical specifications.

Q: What are the compliance differences between the three parts? A: UCC25706P and UCC35706P are ROHS3 compliant. UCC25706D compliance status is not specified. All three maintain EAR99 ECCN and 8542.39.0001 HTSUS classifications.