HCPL-T250#300 Equivalent & Substitute Parts

Part Overview

The HCPL-T250#300 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.

Key Parameters

Parameter	Value
Manufacturer Part Number	HCPL-T250#300
Manufacturer	Broadcom Limited
Technology	Optical Coupling
Number of Channels	1
Voltage - Isolation	3750Vrms
Common Mode Transient Immunity (Min)	5kV/µs
Propagation Delay tpLH / tpHL (Max)	500ns, 500ns
Current - Peak Output	1.5A
Current - Output High, Low	500mA, 500mA
Voltage - Output Supply	15V ~ 30V
Operating Temperature	-20°C ~ 85°C
Package / Case	8-SMD, Gull Wing
Mounting Type	Surface Mount
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution for the HCPL-T250#300 is determined by the following critical parameters:

Isolation Voltage: Minimum 3750Vrms required; higher isolation ratings are acceptable
Number of Channels: Must be 1 channel
Technology: Optical coupling gate driver
Package / Case: 8-SMD, Gull Wing form factor
Mounting Type: Surface mount
Output Supply Voltage Range: 15V ~ 30V compatibility
Peak Output Current: Minimum 1.5A or higher acceptable

Two substitute parts meet these criteria with active product status and improved or equivalent electrical performance.

Parameter Comparison

Parameter	HCPL-T250#300	HCPL-T250-300E	LTV-3150S-TA1
Manufacturer	Broadcom Limited	Broadcom Limited	Lite-On Inc.
Technology	Optical Coupling	Optical Coupling	Optical Coupling
Number of Channels	1	1	1
Voltage - Isolation	3750Vrms	3750Vrms	5000Vrms
Common Mode Transient Immunity (Min)	5kV/µs	5kV/µs	15kV/µs
Propagation Delay tpLH / tpHL (Max)	500ns, 500ns	500ns, 500ns	400ns, 400ns
Current - Peak Output	1.5A	1.5A	1A
Current - Output High, Low	500mA, 500mA	500mA, 500mA	800mA, 800mA
Voltage - Output Supply	15V ~ 30V	15V ~ 30V	15V ~ 30V
Operating Temperature	-20°C ~ 85°C	-20°C ~ 85°C	-40°C ~ 105°C
Package / Case	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Discontinued at DiGi Electronics	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

HCPL-T250-300E (Broadcom Limited) is the direct functional equivalent. This part maintains identical electrical specifications to the discontinued HCPL-T250#300, including isolation voltage, propagation delay, and output current ratings. The primary advantage is active product status with ROHS3 compliance and higher inventory availability (5800 pcs). This part is supplied in tube packaging and is suitable for direct replacement in existing designs.

LTV-3150S-TA1 (Lite-On Inc.) provides enhanced performance characteristics while maintaining compatibility within the allowed parameter ranges. This part offers higher isolation voltage (5000Vrms vs. 3750Vrms), superior common mode transient immunity (15kV/µs vs. 5kV/µs), faster propagation delay (400ns vs. 500ns), and extended operating temperature range (-40°C ~ 105°C vs. -20°C ~ 85°C). The peak output current is rated at 1A, which is lower than the original 1.5A specification. This part is suitable for applications where the 1A peak output current meets system requirements and where enhanced isolation and transient immunity provide design margin.

Both substitute parts maintain the 8-SMD Gull Wing package form factor and surface mount compatibility. Selection between these options depends on whether the application requires the original 1.5A peak output current specification or can operate within the 1A rating of the LTV-3150S-TA1.

Frequently Asked Questions (FAQ)

Q: Can HCPL-T250-300E be used as a direct replacement for HCPL-T250#300?

A: Yes. The HCPL-T250-300E maintains identical electrical and mechanical specifications, including isolation voltage (3750Vrms), propagation delay (500ns), peak output current (1.5A), and 8-SMD Gull Wing package. The primary difference is product status (active vs. discontinued) and packaging format (tube vs. standard).

Q: What is the key limitation of LTV-3150S-TA1 as a substitute?

A: The LTV-3150S-TA1 has a peak output current rating of 1A, compared to the original 1.5A specification. Applications requiring the full 1.5A peak output current must use HCPL-T250-300E. Applications with peak output current requirements of 1A or less can use the LTV-3150S-TA1.

Q: Are there package compatibility concerns between these parts?

A: No. All three parts use the 8-SMD Gull Wing package form factor with surface mount mounting type. PCB layout and reflow profiles remain compatible.

Q: Does the LTV-3150S-TA1 offer any performance advantages?

A: Yes. The LTV-3150S-TA1 provides higher isolation voltage (5000Vrms vs. 3750Vrms), superior common mode transient immunity (15kV/µs vs. 5kV/µs), faster propagation delay (400ns vs. 500ns), and wider operating temperature range (-40°C ~ 105°C vs. -20°C ~ 85°C).

Q: What is the compliance status of available substitutes?

A: HCPL-T250-300E and LTV-3150S-TA1 are both ROHS3 compliant. The original HCPL-T250#300 is RoHS non-compliant. Both substitutes meet REACH unaffected status and carry EAR99 ECCN classification.

Q: Which substitute should be selected for new designs?

A: For new designs, HCPL-T250-300E is recommended if 1.5A peak output current is required. LTV-3150S-TA1 is recommended if the application can operate within 1A peak output current and benefits from enhanced isolation voltage and transient immunity specifications.

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