HCPL-T250 Equivalent & Substitute Parts

Part Overview

The HCPL-T250 is a 1-channel optical isolation gate driver manufactured by Broadcom Limited, designed for high-voltage switching applications requiring galvanic isolation. This component provides 3750Vrms isolation with 1.5A peak output current in an 8-DIP through-hole package. The part is currently in active production status with 3945 units in stock.

Substitute parts are necessary when addressing application requirements for enhanced isolation voltage, improved propagation delay characteristics, extended operating temperature ranges, or when managing component availability and lifecycle considerations.

Substiute Parts

HCPL-T250

Broadcom LimitedIn Stock: 4005HCPL-T250 Datasheet

Current PartRFQ

FOD3120V

onsemiIn Stock: 2175FOD3120V Datasheet

MFR RecommendedRFQ

FOD3150

Fairchild SemiconductorIn Stock: 35310FOD3150 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCPL-T250 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Single-channel optical isolation gate driver topology
• 8-DIP through-hole package (0.300", 7.62mm)
• Output supply voltage range: 15V ~ 30V
• Isolation voltage: minimum 3750Vrms
• Peak output current: minimum 1.5A
• Common mode transient immunity: minimum 5kV/µs

Identified Substitute Parts:

FOD3120V (onsemi) qualifies as a direct substitute. This part exceeds all mandatory criteria with 5000Vrms isolation, 3A peak output current, 35kV/µs common mode transient immunity, and identical 8-DIP package configuration. Operating temperature range extends to -40°C ~ 100°C.

FOD3150 (Fairchild Semiconductor) qualifies as a functional substitute. This part meets isolation voltage (5000Vrms), peak output current (1.5A), and package requirements. However, this part carries obsolete product status and RoHS non-compliant classification.

Parameter Comparison

Engineering Selection Recommendations

FOD3120V (onsemi) is the preferred substitute for new designs and production applications. This part maintains active product status with ROHS3 compliance, providing superior electrical performance across all measured parameters. The extended operating temperature range (-40°C ~ 100°C) accommodates broader environmental specifications. Higher common mode transient immunity (35kV/µs) and increased output current capability (3A peak) provide design margin for demanding switching applications.

FOD3150 (Fairchild Semiconductor) is suitable only for legacy system maintenance or applications where component inventory constraints necessitate use of obsolete stock. The obsolete product status and RoHS non-compliant classification make this part unsuitable for new production designs or systems requiring regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can FOD3120V directly replace HCPL-T250 in existing designs?

A: Yes. FOD3120V meets or exceeds all mandatory electrical and mechanical parameters. The identical 8-DIP package and output supply voltage range (15V ~ 30V) ensure pin-compatible operation. No circuit modifications are required.

Q: What are the key performance advantages of FOD3120V over HCPL-T250?

A: FOD3120V provides higher isolation voltage (5000Vrms vs. 3750Vrms), superior common mode transient immunity (35kV/µs vs. 5kV/µs), faster propagation delay (400ns vs. 500ns), and higher peak output current (3A vs. 1.5A). Operating temperature range extends from -20°C ~ 85°C to -40°C ~ 100°C.

Q: Is FOD3150 suitable for new production applications?

A: No. FOD3150 carries obsolete product status and RoHS non-compliant classification. This part is appropriate only for maintaining existing systems where component replacement is necessary and new stock is unavailable.

Q: Are there any package or pinout differences between these parts?

A: No. All three parts use identical 8-DIP (0.300", 7.62mm) through-hole packages with matching pinout configurations.

Q: What compliance certifications apply to each part?

A: HCPL-T250 holds CSA and UR approvals. FOD3120V holds IEC and UL approvals. FOD3150 approval agency information is not specified. FOD3120V is ROHS3 compliant; both HCPL-T250 and FOD3150 are RoHS non-compliant.

Q: How do the output current specifications compare?

A: HCPL-T250 provides 500mA output high/low with 1.5A peak. FOD3120V provides 2A output high/low with 3A peak. FOD3150 provides 1A output high/low with 1.5A peak. Applications requiring higher drive current benefit from FOD3120V selection.