MOC8204300 Equivalent & Substitute Parts

Part Overview

The MOC8204300 is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications requiring 5300Vrms isolation rating. This component features a single channel configuration in a 6-DIP package with transistor output and integrated base connection. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement planning.

Substiute Parts

MOC8204300

onsemiIn Stock: 927MOC8204300 Datasheet

Current PartRFQ

MOC8204M

onsemiIn Stock: 12948MOC8204M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The MOC8204M qualifies as a substitute based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Single channel configuration
• Transistor with base output topology
• 400V maximum output voltage
• 400mV maximum Vce saturation
• 6-DIP through-hole package (0.300", 7.62mm)
• 5µs turn-on and turn-off times
• DC input type
• onsemi manufacturer

Allowable Parameter Variations:

• Isolation voltage: MOC8204M operates at 4170Vrms (lower than MOC8204300's 5300Vrms)
• Output current: MOC8204M supports 100mA per channel (higher than MOC8204300's 2mA)
• Forward voltage: MOC8204M 1.15V typical (lower than MOC8204300's 1.2V)
• Maximum forward current: MOC8204M 80mA (higher than MOC8204300's 60mA)
• Operating temperature range: MOC8204M -40°C ~ 100°C (narrower than MOC8204300's -55°C ~ 100°C)

Parameter Comparison

Engineering Selection Recommendations

MOC8204M Substitution Criteria:

The MOC8204M is suitable as a substitute for MOC8204300 in applications where the lower isolation voltage rating of 4170Vrms meets system requirements. The MOC8204M is classified as active product status with ROHS3 compliance, providing ongoing manufacturer support and availability advantages over the obsolete MOC8204300.

Applications requiring the full 5300Vrms isolation specification of the MOC8204300 cannot use MOC8204M as a direct substitute. In such cases, alternative optoisolator components with equivalent or higher isolation ratings must be evaluated.

The MOC8204M's higher output current capability (100mA versus 2mA) and improved forward voltage characteristics represent functional enhancements that do not compromise compatibility in circuits designed for the MOC8204300 specifications.

Temperature range consideration: Applications operating below -40°C require MOC8204300 or alternative components rated to -55°C.

Frequently Asked Questions (FAQ)

Q: Can MOC8204M replace MOC8204300 in all applications?

A: No. Substitution is valid only when the application isolation voltage requirement does not exceed 4170Vrms. Applications requiring 5300Vrms isolation must use MOC8204300 or components with equivalent higher ratings.

Q: What are the key differences between these parts?

A: The primary differences are isolation voltage (5300Vrms vs. 4170Vrms), output current capability (2mA vs. 100mA), and operating temperature range (-55°C to 100°C vs. -40°C to 100°C). All other electrical and mechanical parameters remain identical.

Q: Are the packages physically identical?

A: Yes. Both components use 6-DIP through-hole packages with 0.300" (7.62mm) spacing, enabling direct PCB footprint compatibility.

Q: What is the significance of MOC8204300 being obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. MOC8204M, classified as active, represents the current production alternative from onsemi within the MOC8204 series.

Q: Do compliance certifications differ between these parts?

A: MOC8204M carries ROHS3 compliance certification. MOC8204300 compliance information is not provided in the available specifications. Both parts are REACH unaffected and carry EAR99 ECCN classification.

Q: Can I use MOC8204M in a circuit designed for MOC8204300 if isolation voltage is not critical?

A: Yes, provided the application isolation voltage requirement does not exceed 4170Vrms and the operating temperature range requirement does not extend below -40°C. The higher output current capability of MOC8204M does not create compatibility issues.