HF01B01DP-LF Equivalent & Substitute Parts

Part Overview

The HF01B01DP-LF is an offline switch flyback converter IC manufactured by Monolithic Power Systems Inc., designed for isolated power management applications. This component operates at switching frequencies up to 150kHz with a maximum power rating of 45W and includes integrated protection features for overload, overvoltage, and overtemperature conditions. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

HF01B01DP-LF

Monolithic Power Systems Inc.In Stock: 804HF01B01DP-LF Datasheet

Current PartRFQ

HF500GP-30

Monolithic Power Systems Inc.In Stock: 1417HF500GP-30 Datasheet

MFR RecommendedRFQ

HF500GS-15

Monolithic Power Systems Inc.In Stock: 1100HF500GS-15 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HF01B01DP-LF is determined by the following critical parameters:

• Topology: Flyback converter architecture
• Output Isolation: Isolated configuration
• Voltage - Breakdown: 700V minimum
• Power Rating: 45W capability
• Package Compatibility: 8-DIP through-hole mounting for direct pin-compatible replacement
• Fault Protection: Minimum overload, overvoltage, and overtemperature protection

The HF500GP-30 qualifies as a manufacturer-recommended substitute with identical package and pinout compatibility. The HF500GS-15, while sharing the same topology, isolation, and voltage specifications, operates at reduced power output (1.5W) and uses surface-mount packaging (8-SOIC), making it suitable only for applications with lower power requirements and compatible PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the HF01B01DP-LF, the HF500GP-30 is the primary substitute option. Both components maintain identical package geometry (8-DIP through-hole), pinout compatibility, and 45W power capability. The HF500GP-30 is in active production status with expanded operating temperature range (-40°C to 125°C junction temperature versus -40°C to 85°C ambient for the original part) and enhanced fault protection including short-circuit detection. Supply voltage range differs (12.5V–24V versus 8V–20V), requiring verification that input supply specifications align with the substitute component.

The HF500GS-15 is not recommended as a direct substitute due to significantly reduced power output (1.5W versus 45W) and incompatible surface-mount packaging. This component is suitable only for applications with substantially different power requirements and PCB assembly capabilities.

All substitute components maintain ROHS3 compliance and identical breakdown voltage specifications, ensuring regulatory and electrical compatibility within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can the HF500GP-30 replace the HF01B01DP-LF in existing designs without PCB modification?

A: Yes, the HF500GP-30 maintains identical 8-DIP through-hole package geometry and pinout configuration. However, input supply voltage range must be verified. The HF01B01DP-LF accepts 8V–20V while the HF500GP-30 requires 12.5V–24V. If your design operates below 12.5V input, the substitute is not compatible.

Q: What is the difference in switching frequency between these components?

A: The HF01B01DP-LF operates at switching frequencies up to 150kHz, while the HF500GP-30 operates at a fixed 25kHz. This affects transformer design, EMI characteristics, and component sizing. Applications sensitive to switching frequency must evaluate whether 25kHz operation is acceptable.

Q: Why is the HF500GS-15 listed if it cannot replace the HF01B01DP-LF?

A: The HF500GS-15 shares identical topology, isolation, and voltage breakdown specifications but is included for reference only. It is suitable for low-power isolated flyback applications (1.5W maximum) with surface-mount assembly capability. It is not a substitute for 45W applications.

Q: Are there any compliance or certification differences between the main part and substitutes?

A: All three components are ROHS3 compliant with identical REACH and ECCN classifications. The HF500GP-30 and HF500GS-15 are in active production status, ensuring ongoing availability and support compared to the obsolete HF01B01DP-LF.

Q: What additional protection features does the HF500GP-30 provide?

A: The HF500GP-30 includes short-circuit protection and soft-start control features in addition to the overload, overvoltage, and overtemperature protection present in the HF01B01DP-LF. These enhancements improve system reliability and reduce inrush current during startup.