HCPL-T250#500 Equivalent & Substitute Parts

Part Overview

The HCPL-T250#500 is a 1.5A gate driver optical coupler manufactured by Broadcom Limited, providing 3750Vrms isolation for single-channel applications. This component is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility within the allowed parameter ranges for optical coupling gate driver applications.

Substiute Parts

HCPL-T250#500

Broadcom LimitedIn Stock: 1075HCPL-T250#500 Datasheet

Current PartRFQ

HCPL-T250-500E

Broadcom LimitedIn Stock: 721HCPL-T250-500E Datasheet

DirectRFQ

LTV-3150S-TA1

Lite-On Inc.In Stock: 2424LTV-3150S-TA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the HCPL-T250#500 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Single-channel optical coupling gate driver topology
• Isolation voltage minimum 3750Vrms (equal or greater)
• Common mode transient immunity minimum 5kV/µs
• Peak output current minimum 1.5A
• Output supply voltage range 15V ~ 30V
• Operating temperature range encompassing -20°C to 85°C

Mechanical Compatibility Requirements:

• 8-pin surface mount package with gull wing leads
• Physical footprint compatibility with 8-SMD, Gull Wing configuration

Identified Substitute Categories:

1. Direct Manufacturer Equivalent – HCPL-T250-500E (Broadcom Limited): Identical electrical specifications with active product status and improved RoHS compliance
2. Cross-Manufacturer Alternative – LTV-3150S-TA1 (Lite-On Inc.): Enhanced isolation voltage (5000Vrms), superior common mode transient immunity (15kV/µs), and extended operating temperature range, meeting or exceeding all critical parameters

Parameter Comparison

Engineering Selection Recommendations

HCPL-T250-500E is the primary substitute for direct replacement. It maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance, eliminating the regulatory constraints of the discontinued HCPL-T250#500.

LTV-3150S-TA1 serves as an enhanced alternative when superior performance margins are acceptable. This part exceeds isolation voltage and common mode transient immunity requirements, provides faster propagation delay, and extends the operating temperature range. The peak output current specification (1A versus 1.5A) must be evaluated against circuit requirements; however, the higher output high/low current capability (800mA versus 500mA) may offset this difference in gate driver applications. Both substitute parts maintain 8-SMD, Gull Wing package compatibility and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can HCPL-T250-500E be used as a direct drop-in replacement for HCPL-T250#500?

A: Yes. HCPL-T250-500E maintains identical electrical specifications (isolation voltage, propagation delay, output current ratings, and supply voltage range) and mechanical package configuration (8-SMD, Gull Wing). The primary advantage is active product status and improved RoHS compliance.

Q: What are the key differences between HCPL-T250-500E and LTV-3150S-TA1?

A: LTV-3150S-TA1 provides enhanced isolation voltage (5000Vrms versus 3750Vrms), superior common mode transient immunity (15kV/µs versus 5kV/µs), and faster propagation delay (400ns versus 500ns). The peak output current is lower (1A versus 1.5A), but output high/low current capability is higher (800mA versus 500mA). Both maintain compatible 8-SMD, Gull Wing packages.

Q: Is the lower peak output current of LTV-3150S-TA1 a limitation?

A: This depends on circuit design requirements. The 1A peak output current specification must be evaluated against gate charge and switching frequency demands. The higher output high/low current (800mA) may provide adequate performance for many gate driver applications despite the lower peak specification.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both HCPL-T250-500E and LTV-3150S-TA1 are ROHS3 compliant, addressing the RoHS non-compliance status of the discontinued HCPL-T250#500.

Q: Do the substitute parts require PCB layout modifications?

A: No. Both substitute parts maintain the 8-SMD, Gull Wing package configuration, ensuring mechanical and footprint compatibility without PCB redesign.

Q: What is the operating temperature range difference?

A: HCPL-T250-500E maintains the original range (-20°C to 85°C). LTV-3150S-TA1 extends this to -40°C to 105°C, providing broader thermal operating capability.