HCPL-3020 Equivalent & Substitute Parts

Part Overview

The HCPL-3020 is a 1-channel optical isolation gate driver manufactured by Broadcom Limited, designed for high-voltage switching applications requiring galvanic isolation. This through-hole 8-DIP component provides 3750Vrms isolation with 400mA peak output current capability and operates across -40°C to 100°C. The part is currently in active production status with 30,200 units in stock.

Substitute parts are necessary when the HCPL-3020 reaches end-of-life, when alternative sourcing is required due to supply constraints, or when design requirements necessitate different electrical or mechanical characteristics within the optical isolation gate driver category.

Substiute Parts

HCPL-3020

Broadcom LimitedIn Stock: 30285HCPL-3020 Datasheet

Current PartRFQ

FOD3150

Fairchild SemiconductorIn Stock: 35310FOD3150 Datasheet

MFR RecommendedRFQ

TLP351(F)

Toshiba Semiconductor and StorageIn Stock: 35269TLP351(F) Datasheet

MFR RecommendedRFQ

TLP351(TP1,F)

Toshiba Semiconductor and StorageIn Stock: 3032TLP351(TP1,F) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-3020 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Technology: Optical Coupling (1-channel gate driver)
• Package / Case: 8-DIP (0.300", 7.62mm) form factor
• Voltage - Isolation: 3750Vrms minimum
• Common Mode Transient Immunity: 10kV/µs minimum
• Propagation Delay: 700ns maximum
• Rise / Fall Time: 50ns typical
• Voltage - Output Supply: 10V ~ 30V range compatibility
• Operating Temperature: -40°C ~ 100°C range

Allowable Parameter Variations:

• Current - Peak Output: May exceed 400mA (higher capability acceptable)
• Current - Output High, Low: May exceed 200mA (higher capability acceptable)
• Voltage - Isolation: May exceed 3750Vrms (higher isolation acceptable)
• Common Mode Transient Immunity: May exceed 10kV/µs (higher immunity acceptable)

The substitute parts FOD3150, TLP351(F), and TLP351(TP1,F) meet these criteria with enhanced electrical performance in specific parameters while maintaining functional compatibility within the optical isolation gate driver category.

Parameter Comparison

Engineering Selection Recommendations

HCPL-3020 (Primary Part) Use when RoHS non-compliant designs are acceptable and Broadcom sourcing is preferred. Active production status ensures long-term availability.

TLP351(F) - Recommended Substitute (Through-Hole) Select for direct pin-compatible replacement in through-hole applications. Offers enhanced peak output current (600mA vs. 400mA) and RoHS compliance. Maintains identical isolation voltage, propagation delay, and rise/fall time specifications. Active production status with 35,200 units in stock.

TLP351(TP1,F) - Recommended Substitute (Surface Mount) Select when surface mount technology is required. Functionally equivalent to TLP351(F) with identical electrical specifications. RoHS compliant. Active production status. Suitable for new designs or board redesigns incorporating SMD assembly.

FOD3150 - Enhanced Performance Substitute Select when higher isolation voltage (5000Vrms vs. 3750Vrms), faster propagation delay (500ns vs. 700ns), and higher output current (1.5A vs. 400mA) are beneficial. Note: Obsolete product status limits long-term availability. Minimum output supply voltage is 15V (vs. 10V for HCPL-3020). Through-hole 8-DIP package compatible.

Frequently Asked Questions (FAQ)

Q: Can TLP351(F) directly replace HCPL-3020 in existing through-hole PCB designs? A: Yes. TLP351(F) maintains the same 8-DIP (0.300", 7.62mm) through-hole package, pin configuration, isolation voltage (3750Vrms), propagation delay (700ns), and operating temperature range (-40°C ~ 100°C). Enhanced output current capability (600mA vs. 400mA) is backward compatible.

Q: What is the key difference between TLP351(F) and TLP351(TP1,F)? A: The primary difference is mounting technology. TLP351(F) is through-hole 8-DIP; TLP351(TP1,F) is surface mount 8-SMD, Gull Wing. Electrical specifications are identical. Select based on PCB assembly method.

Q: Why is FOD3150 listed as obsolete? A: FOD3150 is manufactured by Fairchild Semiconductor and carries obsolete product status. While functionally compatible, long-term availability cannot be guaranteed. Use only when enhanced specifications (5000Vrms isolation, 1.5A peak output) are required and supply is confirmed.

Q: Is TLP351(F) RoHS compliant while HCPL-3020 is not? A: Yes. TLP351(F) and TLP351(TP1,F) are RoHS Compliant. HCPL-3020 is RoHS non-compliant. Select TLP351 variants for designs requiring RoHS compliance.

Q: What is the minimum output supply voltage for each part? A: HCPL-3020, TLP351(F), and TLP351(TP1,F) operate from 10V ~ 30V. FOD3150 requires 15V ~ 30V minimum. Designs using supply voltages below 15V must use HCPL-3020 or TLP351 variants.

Q: Can FOD3150 be used in applications requiring 10V output supply? A: No. FOD3150 minimum output supply voltage is 15V. Applications requiring 10V operation must use HCPL-3020, TLP351(F), or TLP351(TP1,F).