K3022P Optoisolator Triac Output Equivalent & Substitute Parts

Part Overview

The K3022P is a 5.3kVrms optoisolator with triac output manufactured by Vishay Semiconductor Opto Division in a 6-DIP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The K3022P provides galvanic isolation for triac-based switching applications with a single channel configuration and 100mA on-state current capability.

Key Parameters

Parameter	K3022P Value	Unit
Voltage - Isolation	5300	Vrms
Voltage - Off State	400	V
Current - LED Trigger (Ift) Max	10	mA
Current - On State (It RMS) Max	100	mA
Current - Hold (Ih)	200	µA
Voltage - Forward (Vf) Typ	1.3	V
Current - DC Forward (If) Max	80	mA
Operating Temperature Range	-55 to 100	°C
Package / Case	6-DIP (0.300", 7.62mm)	-
Mounting Type	Through Hole	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution for the K3022P is determined by the following critical parameters:

Output Type: Triac (single channel)
Voltage - Isolation: Minimum 5000Vrms (K3022P operates at 5300Vrms)
Voltage - Off State: 400V
Current - On State: 100mA maximum
Package / Case: 6-DIP through-hole configuration
Operating Temperature: -55°C to 100°C
RoHS Compliance: ROHS3 Compliant

Substitute parts from Everlight Electronics (EL series) and onsemi (MOC series) meet these core electrical and mechanical requirements. Variations in LED trigger current (Ift), hold current (Ih), and forward voltage (Vf) are acceptable within the functional envelope of triac output optoisolators. Package pitch differences (0.300" vs 0.400") represent distinct mechanical variants but maintain electrical compatibility.

Parameter Comparison

Parameter	K3022P	EL3021-V	EL3022-V	EL3023-V	MOC3020
Manufacturer	Vishay	Everlight	Everlight	Everlight	onsemi
Voltage - Isolation (Vrms)	5300	5000	5000	5000	5300
Voltage - Off State (V)	400	400	400	400	400
Current - LED Trigger Ift Max (mA)	10	15	10	5	30
Current - On State It RMS Max (mA)	100	100	100	100	N/A
Current - Hold Ih (µA)	200	250	250	250	100
Voltage - Forward Vf Typ (V)	1.3	1.18	1.18	1.18	N/A
Current - DC Forward If Max (mA)	80	60	60	60	50
Operating Temperature (°C)	-55 to 100	-55 to 100	-55 to 100	-55 to 100	N/A
Package / Case	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)
Product Status	Obsolete	Active	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	N/A

Engineering Selection Recommendations

For applications requiring direct replacement of the K3022P, the Everlight EL3022-V and EL3022M-V series provide the closest electrical match with active product status. These parts maintain the 10mA LED trigger current specification of the K3022P while offering 5000Vrms isolation (300V lower than the original but within standard triac optoisolator operating margins). Both variants are ROHS3 compliant and carry comprehensive international certifications (CSA, DEMKO, FIMKO, NEMKO, SEMKO, UL, VDE).

The EL3021 series (EL3021-V, EL3021M, EL3021M-V) serves applications with higher LED trigger current tolerance (15mA maximum). The EL3023 series (EL3023-V, EL3023M, EL3023M-V) accommodates designs requiring lower LED trigger current (5mA maximum).

Package pitch variants exist within the Everlight lineup: 0.300" (7.62mm) pitch for standard DIP breadboards and 0.400" (10.16mm) pitch for wider spacing applications. Mechanical compatibility with PCB layouts must be verified before selection.

The onsemi MOC3020 maintains identical 5300Vrms isolation to the K3022P but carries obsolete product status, limiting its suitability for new designs despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can EL3021-V replace K3022P directly? A: Electrical substitution is possible. The EL3021-V operates at 5000Vrms isolation (300V lower) and has 15mA LED trigger current versus K3022P's 10mA. Both maintain 100mA on-state current and 400V off-state voltage. PCB layout compatibility depends on matching the 0.300" DIP pitch.

Q: What is the difference between EL3022-V and EL3022M variants? A: EL3022-V uses 0.300" (7.62mm) DIP pitch; EL3022M uses 0.400" (10.16mm) DIP pitch. Electrical specifications are identical. Selection depends on PCB footprint requirements.

Q: Why do EL3023 parts have lower LED trigger current? A: The EL3023 series specifies 5mA maximum LED trigger current versus 10mA for EL3022. This represents a different device variant within the Everlight optoisolator family, suitable for applications requiring lower input current drive.

Q: Is MOC3020 a suitable replacement? A: MOC3020 matches the 5300Vrms isolation specification but carries obsolete product status. For new designs, active Everlight EL series parts are preferred. MOC3020 may be considered only for legacy system maintenance where inventory is available.

Q: What certifications apply to substitute parts? A: Everlight EL series parts carry CSA, DEMKO, FIMKO, NEMKO, SEMKO, UL, and VDE certifications. All listed substitutes are ROHS3 compliant. Verify specific certification requirements for your application's regulatory jurisdiction.

Q: Can I use 0.400" pitch parts in a 0.300" pitch footprint? A: No. DIP pitch is a mechanical specification. 0.400" pitch parts (EL3021M, EL3022M, EL3023M) require PCB layouts designed for wider pin spacing. Attempting to install in 0.300" pitch sockets will cause mechanical misalignment.

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