UCC3960P Equivalent & Substitute Parts

Part Overview

The UCC3960P is an offline switch integrated circuit manufactured by Texas Instruments, designed for power management applications in converter offline topology configurations. Operating at frequencies up to 400kHz, this component provides isolated output with current limiting and over voltage fault protection capabilities. The UCC3960P is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

UCC3960P

Texas InstrumentsIn Stock: 824UCC3960P Datasheet

Current PartRFQ

UCC3960D

Texas InstrumentsIn Stock: 1842UCC3960D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UCC3960P is determined by electrical and functional equivalence across the following critical parameters:

• Voltage supply range: 8V ~ 19V
• Switching frequency capability: Up to 400kHz
• Duty cycle: 72%
• Fault protection features: Current Limiting and Over Voltage protection
• Control features: Frequency Control and Soft Start
• Output isolation: Isolated topology
• Operating temperature range: -55°C ~ 150°C (TJ)
• Base product number: UCC3960

The UCC3960D qualifies as a direct substitute based on identical electrical specifications and functional characteristics. The primary difference is packaging format: the UCC3960P uses through-hole 8-DIP mounting, while the UCC3960D uses surface-mount 8-SOIC packaging. Both variants share the same base product number (UCC3960) and maintain full electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

The UCC3960D is the active product status equivalent for the obsolete UCC3960P. Both components maintain identical electrical specifications and functional characteristics, ensuring direct functional substitution. Selection between these variants depends on circuit board assembly requirements:

For through-hole PCB designs, the UCC3960P remains available in inventory (728 Pcs). For new designs or surface-mount PCB implementations, the UCC3960D is the recommended selection, with significantly higher inventory availability (1800 Pcs) and active product status from Texas Instruments.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications. The UCC3960D carries MSL Level 2 (1 Year) moisture sensitivity classification, requiring standard moisture control during storage and handling for surface-mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the UCC3960D directly replace the UCC3960P in existing designs?

A: Electrical substitution is direct. The UCC3960D maintains identical voltage supply range (8V ~ 19V), switching frequency (up to 400kHz), duty cycle (72%), fault protection, and control features. PCB layout modification is required due to package format change from 8-DIP through-hole to 8-SOIC surface-mount.

Q: What is the primary difference between UCC3960P and UCC3960D?

A: The UCC3960P uses through-hole 8-DIP packaging (0.300", 7.62mm), while the UCC3960D uses surface-mount 8-SOIC packaging (0.154", 3.90mm Width). All electrical and functional specifications are identical.

Q: Why is the UCC3960P classified as obsolete?

A: The UCC3960P is obsolete due to Texas Instruments' product lifecycle management. The UCC3960D surface-mount variant represents the active continuation of this product line.

Q: Are there any compliance differences between these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. The UCC3960D carries MSL Level 2 (1 Year) classification for moisture sensitivity, applicable to surface-mount assembly processes.

Q: What inventory status should influence component selection?

A: The UCC3960P has 728 Pcs in stock (obsolete status), while the UCC3960D has 1800 Pcs in stock (active status). For new designs and long-term availability, the UCC3960D is the preferred selection.