HF01B02DP-LF Equivalent & Substitute Parts

Part Overview

The HF01B02DP-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 33W and features integrated fault protection including over-load, over-temperature, and over-voltage detection. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

HF01B02DP-LF

Monolithic Power Systems Inc.In Stock: 11263HF01B02DP-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 of the HF01B02DP-LF is determined by the following critical parameters:

Core Compatibility Criteria:

• Topology: Flyback converter architecture
• Output Isolation: Isolated configuration
• Voltage - Breakdown: 700V minimum
• Package / Case: 8-DIP form factor with 7 leads (through-hole mounting)
• Internal Switch(s): Integrated switching element required

Functional Compatibility Criteria:

• Fault Protection: Over-load, over-temperature, and over-voltage protection
• Voltage - Supply Range: Must accommodate 8V ~ 20V input range
• Frequency - Switching: Operating frequency compatibility
• Power Rating: Minimum 33W capability

The substitute parts identified maintain the same topology, isolation characteristics, voltage breakdown rating, and through-hole DIP packaging. Variations in switching frequency, power rating, supply voltage range, and additional control features are documented in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

HF500GP-30 Selection Criteria: The HF500GP-30 maintains identical through-hole DIP packaging and is the primary substitute for direct board-level replacement of the HF01B02DP-LF. This part is currently in active production status with 1351 units in stock. The component meets all core compatibility requirements: 700V breakdown voltage, isolated flyback topology, and integrated fault protection with additional short-circuit protection. The supply voltage range shifts to 12.5V ~ 24V, requiring verification that the application input voltage remains within this specification. The switching frequency reduces to 25kHz from the original 150kHz maximum, and power rating increases to 45W. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

HF500GS-15 Selection Criteria: The HF500GS-15 is an alternative substitute with identical electrical specifications to the HF500GP-30 but employs surface-mount 8-SOIC packaging instead of through-hole DIP. This part is suitable only for new designs or board redesigns that accommodate surface-mount technology. The component is currently in active production with 1074 units in stock. Surface-mount implementation requires PCB layout modifications and different assembly processes compared to through-hole mounting. This part carries MSL 6 (time-on-label) moisture sensitivity, requiring controlled storage and handling procedures.

Compliance and Production Status: Both substitute parts are manufactured by Monolithic Power Systems Inc. and maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory certifications. The transition from obsolete to active production status ensures long-term component availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the HF500GP-30 be used as a direct replacement for the HF01B02DP-LF without circuit modifications?

A: The HF500GP-30 maintains the same 8-DIP through-hole package and pinout compatibility. However, the supply voltage range changes from 8V ~ 20V to 12.5V ~ 24V. Applications operating below 12.5V input voltage require circuit redesign. The switching frequency reduction from 150kHz to 25kHz may affect transformer design and output filtering characteristics.

Q: What is the primary difference between HF500GP-30 and HF500GS-15?

A: The HF500GP-30 uses through-hole 8-DIP packaging suitable for existing PCB designs, while the HF500GS-15 uses surface-mount 8-SOIC packaging requiring PCB redesign. The HF500GS-15 also has a lower power rating (1.5W versus 45W) and different moisture sensitivity requirements (MSL 6 versus MSL 1).

Q: Are there any electrical performance differences between the original HF01B02DP-LF and the HF500GP-30?

A: Both parts share identical 700V breakdown voltage, isolated flyback topology, and fault protection architecture. The HF500GP-30 adds soft-start control features and short-circuit protection not present in the original part. Operating temperature range extends from -40°C ~ 85°C to -40°C ~ 125°C. Switching frequency differs (150kHz maximum versus 25kHz fixed), and power rating increases from 33W to 45W.

Q: What packaging considerations apply when selecting between these substitutes?

A: The HF500GP-30 maintains through-hole DIP mounting, allowing direct PCB socket replacement without layout changes. The HF500GS-15 requires surface-mount assembly capabilities and PCB redesign. Through-hole components typically have longer lead times for rework and repair compared to surface-mount alternatives.

Q: Are all three parts RoHS compliant?

A: Yes, all three parts maintain ROHS3 compliance and REACH unaffected status. Both substitute parts are suitable for applications requiring regulatory compliance with current environmental standards.