ACPL-K312-560E Equivalent & Substitute Parts

Part Overview

The ACPL-K312-560E is a 2.5A gate driver optical coupler manufactured by Broadcom Limited, providing 5000Vrms isolation in an 8-SO stretched package. This component is designed for high-voltage gate drive applications requiring galvanic isolation and fast switching performance. The part is currently active in production with full inventory availability.

Substitute parts become necessary when addressing specific application requirements such as improved propagation delay characteristics, enhanced common mode transient immunity, reduced moisture sensitivity, or alternative package configurations. The following equivalent parts maintain core functional compatibility while offering variations in electrical performance and physical form factors.

Key Parameters

Parameter	ACPL-K312-560E
Isolation Voltage	5000Vrms
Number of Channels	1
Peak Output Current	2.5A
Output Supply Voltage Range	15V ~ 30V
Operating Temperature Range	-40°C ~ 100°C
Package Type	8-SOIC (0.268", 6.81mm Width)
Propagation Delay (tpLH / tpHL)	500ns / 500ns
Common Mode Transient Immunity	15kV/µs
Moisture Sensitivity Level	3 (168 Hours)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Factors:

Single-channel optical coupling gate driver architecture
Output supply voltage range of 15V ~ 30V
Surface mount technology with SOIC package family
Active product status with current manufacturing support
ROHS3 compliance and equivalent regulatory approvals

Substitution Categories:

Direct 8-SO Package Substitutes (Same Form Factor): ACPL-K342-560E maintains identical 8-SOIC package geometry while offering improved propagation delay (350ns/250ns vs 500ns/500ns) and enhanced common mode transient immunity (25kV/µs vs 15kV/µs).
6-SO Package Substitutes (Reduced Pin Count): ACPL-P341-560E, ACPL-P343-560E, ACPL-P349-560E, and ACPL-W341-560E utilize 6-SOIC packages with different isolation voltage ratings and output current capabilities. These require PCB layout modification but offer superior switching performance characteristics.
Isolation Voltage Variants: Parts rated at 3750Vrms (ACPL-H342-560E, ACPL-P341-560E, ACPL-P343-560E, ACPL-P349-560E) provide lower isolation ratings suitable for applications not requiring 5000Vrms isolation. ACPL-W341-560E maintains 5000Vrms isolation in a 6-SO package.

Parameter Comparison

Part Number	Package	Isolation (Vrms)	Peak Current (A)	tpLH / tpHL (ns)	CMTI (kV/µs)	MSL	Temp Range (°C)
ACPL-K312-560E	8-SOIC	5000	2.5	500 / 500	15	3	-40 ~ 100
ACPL-K342-560E	8-SOIC	5000	2.5	350 / 250	25	1	-40 ~ 105
ACPL-H342-560E	8-SOIC	3750	2.5	350 / 250	25	1	-40 ~ 105
ACPL-P341-560E	6-SOIC	3750	3	200 / 200	35	1	-40 ~ 105
ACPL-P343-560E	6-SOIC	3750	4	200 / 200	35	1	-40 ~ 105
ACPL-P349-560E	6-SOIC	3750	2.5	110 / 110	50	1	-40 ~ 105
ACPL-W341-560E	6-SOIC	5000	3	200 / 200	35	1	-40 ~ 105

Engineering Selection Recommendations

For Direct Replacement (No PCB Modification): ACPL-K342-560E is the optimal direct substitute, maintaining identical 8-SOIC package footprint while delivering superior electrical performance. This part features reduced propagation delay, improved common mode transient immunity, and MSL 1 moisture sensitivity rating. All parts carry equivalent regulatory approvals (CSA, IEC/EN/DIN, UR) and ROHS3 compliance.

For Applications Requiring 5000Vrms Isolation with Package Flexibility: ACPL-W341-560E provides 5000Vrms isolation in a 6-SOIC package with enhanced switching characteristics (200ns propagation delay, 35kV/µs CMTI). This selection requires PCB layout redesign but offers superior performance for high-speed gate drive applications.

For Applications Tolerating 3750Vrms Isolation: ACPL-P349-560E delivers the fastest switching performance (110ns propagation delay, 50kV/µs CMTI) among all substitutes, suitable for demanding high-frequency switching applications. ACPL-P343-560E provides the highest output current capability (4A peak) in the 3750Vrms isolation class.

All substitute parts maintain active product status with current manufacturing support and equivalent compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can ACPL-K342-560E replace ACPL-K312-560E without PCB modification? A: Yes. Both parts use identical 8-SOIC package geometry and pinout. ACPL-K342-560E is a direct footprint replacement with improved electrical characteristics.

Q: What is the primary difference between 8-SO and 6-SO package substitutes? A: The 8-SO package contains 8 pins while the 6-SO package contains 6 pins. Substituting between these packages requires PCB layout modification and verification of pin function compatibility with your circuit design.

Q: Why do some substitutes have lower isolation voltage ratings? A: ACPL-H342-560E, ACPL-P341-560E, ACPL-P343-560E, and ACPL-P349-560E are rated at 3750Vrms isolation. These parts are suitable only for applications where the maximum isolation voltage requirement does not exceed 3750Vrms. Verify your application's isolation voltage specification before selection.

Q: What does MSL 1 versus MSL 3 mean for component handling? A: MSL (Moisture Sensitivity Level) 3 indicates the component requires baking before reflow soldering if exposed to moisture for more than 168 hours. MSL 1 parts have unlimited shelf life without moisture precautions. ACPL-K342-560E and all 6-SO substitutes carry MSL 1 rating.

Q: Which substitute offers the fastest propagation delay? A: ACPL-P349-560E provides the fastest propagation delay at 110ns (both tpLH and tpHL), making it suitable for high-frequency switching applications requiring minimal gate drive delay.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance and equivalent regulatory approvals (CSA, IEC/EN/DIN, UR) as the main part.

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