HCPL-3120#560 Equivalent & Substitute Parts

Part Overview

The HCPL-3120#560 is a 2.5A 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 for gate driver applications requiring high-speed optical isolation.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Peak Output Current	2.5A
Common Mode Transient Immunity (Min)	25kV/µs
Propagation Delay tpLH / tpHL (Max)	500ns / 500ns
Pulse Width Distortion (Max)	300ns
Output Supply Voltage Range	15V ~ 30V
Operating Temperature Range	-40°C ~ 100°C
Package Type	8-SMD, Gull Wing
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution for the HCPL-3120#560 is determined by the following critical parameters:

Isolation Voltage: Minimum 3750Vrms required for equivalent functionality
Number of Channels: Single-channel configuration mandatory
Peak Output Current: Minimum 2.5A required for gate driver applications
Common Mode Transient Immunity: Minimum 25kV/µs for high-speed switching environments
Package Configuration: 8-SMD, Gull Wing surface mount form factor
Output Supply Voltage: 15V ~ 30V operating range
Operating Temperature: -40°C ~ 100°C minimum range

Two substitute parts are identified based on these parameters:

HCPL-3120-560E (Broadcom Limited) — Direct manufacturer variant with identical electrical specifications and active product status
LTV-3150S-TA1 (Lite-On Inc.) — Alternative manufacturer part with enhanced isolation voltage and modified output current characteristics

Parameter Comparison

Parameter	HCPL-3120#560	HCPL-3120-560E	LTV-3150S-TA1
Manufacturer	Broadcom Limited	Broadcom Limited	Lite-On Inc.
Product Status	Discontinued at DiGi Electronics	Active	Active
Isolation Voltage	3750Vrms	3750Vrms	5000Vrms
Number of Channels	1	1	1
Peak Output Current	2.5A	2.5A	1A
Output High/Low Current	2A / 2A	2A / 2A	800mA / 800mA
Common Mode Transient Immunity (Min)	25kV/µs	25kV/µs	15kV/µs
Propagation Delay tpLH / tpHL (Max)	500ns / 500ns	500ns / 500ns	400ns / 400ns
Pulse Width Distortion (Max)	300ns	300ns	120ns
Rise / Fall Time (Typ)	100ns / 100ns	100ns / 100ns	42ns / 50ns
Output Supply Voltage	15V ~ 30V	15V ~ 30V	15V ~ 30V
Operating Temperature	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 105°C
Package / Case	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agency	CSA, IEC/EN/DIN, UR	CSA, IEC/EN/DIN, UR	cUR, IEC/EN/DIN, UR

Engineering Selection Recommendations

HCPL-3120-560E is the primary substitute for HCPL-3120#560. This part maintains identical electrical specifications, including 3750Vrms isolation, 2.5A peak output current, and 25kV/µs common mode transient immunity. The HCPL-3120-560E is currently active in production with ROHS3 compliance, addressing the discontinued status of the original part. Packaging and mounting characteristics are identical, enabling direct board-level replacement without design modification.

LTV-3150S-TA1 is an alternative substitute when enhanced isolation voltage (5000Vrms) is acceptable. This part provides improved isolation margin and faster propagation delay (400ns). However, the peak output current is reduced to 1A and common mode transient immunity is 15kV/µs, making this suitable only for applications where output current requirements do not exceed 1A and CMTI performance of 15kV/µs is sufficient. Both substitute parts carry ROHS3 compliance and current production status.

Frequently Asked Questions (FAQ)

Q: Can HCPL-3120-560E directly replace HCPL-3120#560 without circuit modification?

A: Yes. The HCPL-3120-560E maintains identical electrical specifications across all critical parameters: 3750Vrms isolation, 2.5A peak output current, 25kV/µs CMTI, and 500ns propagation delay. The 8-SMD Gull Wing package is mechanically compatible. No design changes are required.

Q: What are the limitations of LTV-3150S-TA1 as a substitute?

A: The LTV-3150S-TA1 has reduced peak output current (1A versus 2.5A) and lower common mode transient immunity (15kV/µs versus 25kV/µs). Applications requiring the full 2.5A output current or 25kV/µs CMTI performance cannot use this part. Verify application current and switching speed requirements before selection.

Q: Are there compliance differences between the substitute parts?

A: HCPL-3120#560 is RoHS non-compliant. Both HCPL-3120-560E and LTV-3150S-TA1 are ROHS3 compliant. If RoHS compliance is a design requirement, either substitute part satisfies this criterion. Both parts carry IEC/EN/DIN and UR certifications.

Q: What is the difference between HCPL-3120#560 and HCPL-3120-560E packaging?

A: HCPL-3120#560 uses 8-DIP Gull Wing packaging. HCPL-3120-560E uses 8-SMD Gull Wing packaging. Both are surface mount configurations with identical pin assignments and electrical performance. The SMD variant (560E) is the current production form factor.

Q: Can LTV-3150S-TA1 be used in high-speed switching applications?

A: LTV-3150S-TA1 has faster propagation delay (400ns) and lower pulse width distortion (120ns) compared to HCPL-3120#560 (500ns, 300ns). However, the reduced common mode transient immunity (15kV/µs) may limit performance in applications with very fast switching edges. Verify CMTI requirements against the 15kV/µs specification.

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