K3011P Optoisolator Triac Output Equivalent & Substitute Parts

Part Overview

The K3011P is a 5.3kVrms optoisolator with triac output manufactured by Vishay Semiconductor Opto Division in a 6-DIP through-hole package. This component provides galvanic isolation for AC switching applications with a single triac output channel and no zero-crossing detection circuit. The K3011P is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts must maintain compatibility across isolation voltage, output current ratings, package form factor, and operating temperature range.

Substiute Parts

K3011P

Vishay Semiconductor Opto DivisionIn Stock: 23658K3011P Datasheet

Current PartRFQ

EL3010-V

Everlight Electronics Co LtdIn Stock: 1141EL3010-V Datasheet

MFR RecommendedRFQ

EL3011-V

Everlight Electronics Co LtdIn Stock: 1060EL3011-V Datasheet

MFR RecommendedRFQ

EL3012-V

Everlight Electronics Co LtdIn Stock: 796EL3012-V Datasheet

MFR RecommendedRFQ

MOC3009X

Isocom Components 2004 LTDIn Stock: 12734MOC3009X Datasheet

MFR RecommendedRFQ

MOC3010VM

Fairchild SemiconductorIn Stock: 2055MOC3010VM Datasheet

MFR RecommendedRFQ

MOC3010X

Isocom Components 2004 LTDIn Stock: 2414MOC3010X Datasheet

MFR RecommendedRFQ

MOC3011X

Isocom Components 2004 LTDIn Stock: 1089MOC3011X Datasheet

MFR RecommendedRFQ

MOC3012VM

Fairchild SemiconductorIn Stock: 1440MOC3012VM Datasheet

MFR RecommendedRFQ

MOC3012X

Isocom Components 2004 LTDIn Stock: 12568MOC3012X Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Package Compatibility: All substitute parts must use 6-DIP (0.300", 7.62mm) through-hole packaging to ensure direct board-level compatibility.

Isolation Voltage: The K3011P specifies 5300Vrms isolation. Substitute parts with equal or higher isolation voltage (5300Vrms or greater) are acceptable. Parts with lower isolation voltage do not meet the electrical isolation requirement.

Output Current Rating: The K3011P supports 100 mA on-state RMS current. Substitute parts must support this current level or higher.

LED Trigger Current (Ift): The K3011P requires maximum 10mA trigger current. Substitute parts with equal or lower Ift values are compatible; higher values require additional driver current capacity.

Operating Temperature Range: The K3011P operates from -55°C to 100°C. Substitute parts must cover this range or a superset thereof.

Output Type & Channel Configuration: All substitutes must provide triac output with single-channel configuration and no zero-crossing detection.

Based on these criteria, substitute parts are grouped as follows:

Group A - Full Electrical Equivalents (5300Vrms Isolation): MOC3010X, MOC3011X, MOC3012X provide identical 5300Vrms isolation voltage with compatible current ratings and operating temperature ranges.

Group B - Reduced Isolation Voltage (5000Vrms): EL3010-V, EL3011-V, EL3012-V operate at 5000Vrms isolation, which is lower than the K3011P specification and suitable only for applications with reduced isolation requirements.

Group C - Non-Equivalent (Below Specification): MOC3009X (7.5Vpk isolation) and MOC3010VM/MOC3012VM (4170Vrms isolation) fall below the K3011P isolation voltage specification and are not suitable substitutes.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

MOC3011X and MOC3012X from Isocom Components are the preferred substitutes. Both maintain the full 5300Vrms isolation voltage specification of the K3011P, support 100 mA on-state current, and operate across the -40°C to 100°C temperature range. MOC3011X matches the 10mA LED trigger current of the K3011P, while MOC3012X requires only 5mA trigger current, reducing driver circuit complexity. Both parts are active products with ROHS3 compliance and UR/VDE approvals.

Secondary Substitutes (Reduced Isolation Voltage):

EL3011-V from Everlight Electronics provides 5000Vrms isolation with 10mA LED trigger current matching the K3011P specification. This part is suitable for applications where 5000Vrms isolation meets system requirements. EL3011-V operates across the full -55°C to 100°C temperature range and carries ROHS3 compliance with CSA, DEMKO, FIMKO, NEMKO, SEMKO, UL, and VDE approvals.

EL3012-V offers the lowest LED trigger current at 5mA with 5000Vrms isolation and identical temperature range coverage. This part reduces input driver requirements while maintaining active product status and comprehensive regulatory approvals.

Non-Recommended Substitutes:

MOC3009X, MOC3010VM, and MOC3012VM do not meet the K3011P isolation voltage specification and are not suitable for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can MOC3010X, MOC3011X, or MOC3012X be used as direct replacements for K3011P?

A: MOC3011X and MOC3012X are direct electrical equivalents with identical 5300Vrms isolation voltage, 100 mA on-state current, and 6-DIP package. MOC3010X also meets these criteria. All three are active products suitable for new designs. The K3011P is obsolete, making these Isocom parts the primary substitution path.

Q: What is the difference between MOC3011X and MOC3012X?

A: Both parts provide 5300Vrms isolation and 100 mA on-state current in 6-DIP packaging. The primary difference is LED trigger current: MOC3011X requires 10mA maximum (matching K3011P), while MOC3012X requires only 5mA maximum. MOC3012X reduces input driver circuit complexity and power consumption.

Q: Are the Everlight EL3010-V, EL3011-V, and EL3012-V suitable substitutes?

A: These parts provide 5000Vrms isolation, which is 300Vrms lower than the K3011P specification. They are suitable only for applications where 5000Vrms isolation meets system requirements. All three maintain 100 mA on-state current and 6-DIP packaging. EL3011-V matches the 10mA LED trigger current; EL3012-V requires only 5mA.

Q: Does operating temperature range affect substitution compatibility?

A: The K3011P operates from -55°C to 100°C. Isocom parts (MOC3010X, MOC3011X, MOC3012X) operate from -40°C to 100°C, which does not cover the full lower temperature range. Everlight parts (EL3010-V, EL3011-V, EL3012-V) operate from -55°C to 100°C, matching the K3011P specification. For applications requiring -55°C operation, Everlight parts are preferred.

Q: What regulatory approvals should I verify for my application?

A: The K3011P carries BSI, CQC, UR, and VDE approvals. Isocom parts carry UR and VDE approvals. Everlight parts carry CSA, DEMKO, FIMKO, NEMKO, SEMKO, UL, and VDE approvals. Verify that substitute part approvals align with your application's regulatory requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. MOC3010X, MOC3011X, MOC3012X, EL3010-V, EL3011-V, and EL3012-V are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Can I use parts with lower LED trigger current (Ift)?

A: Yes. Parts with lower Ift values (such as MOC3012X or EL3012-V at 5mA) require less input driver current than the K3011P (10mA) and are fully compatible. This reduces input circuit power consumption and simplifies driver design.