4N33300 Optoisolator Equivalent & Substitute Parts

Part Overview

The 4N33300 is an optoisolator with Darlington output and base connection, manufactured by onsemi. It provides 5300Vrms isolation voltage in a 6-DIP through-hole package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

4N33300

onsemiIn Stock: 6984N33300 Datasheet

Current PartRFQ

4N33VM

onsemiIn Stock: 31504N33VM Datasheet

SimilarRFQ

4N33

onsemiIn Stock: 47424N33 Datasheet

SimilarRFQ

4N33-X001

Vishay Semiconductor Opto DivisionIn Stock: 8194N33-X001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 4N33300 is determined by the following critical parameters:

• Isolation Voltage: 5300Vrms minimum
• Output Configuration: Darlington with Base
• Package Type: 6-DIP through-hole
• Current Output Capability: 150mA per channel
• Maximum Output Voltage: 30V
• Current Transfer Ratio: 500% @ 10mA minimum
• Input Type: DC

Parts meeting these specifications are considered direct substitutes. Variations in operating temperature range, forward voltage characteristics, or compliance certifications do not disqualify substitution eligibility when core electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

4N33VM (onsemi): Active product status with full RoHS3 compliance. Isolation voltage is 4170Vrms, which is lower than the 4N33300 specification of 5300Vrms. This part is suitable only for applications where the lower isolation voltage meets design requirements. Operating temperature range is -40°C ~ 100°C, narrower than the 4N33300 range of -55°C ~ 100°C.

4N33 (onsemi): Matches all critical electrical parameters with the 4N33300, including 5300Vrms isolation voltage, 150mA output current, and -55°C ~ 100°C operating temperature. Product status is obsolete, consistent with the 4N33300. This part provides direct functional equivalence.

4N33-X001 (Vishay Semiconductor Opto Division): Maintains 5300Vrms isolation voltage and operating temperature range of -55°C ~ 100°C. Current output capability is 100mA, which is lower than the 4N33300 specification of 150mA. RoHS3 compliance and active product status provide long-term availability. This part is suitable for applications where 100mA output current is sufficient.

Frequently Asked Questions (FAQ)

Q: Can 4N33VM be used as a direct replacement for 4N33300?

A: 4N33VM has lower isolation voltage (4170Vrms vs. 5300Vrms) and a narrower operating temperature range (-40°C ~ 100°C vs. -55°C ~ 100°C). It is suitable only if your application requirements permit these reduced specifications.

Q: What is the difference between 4N33 and 4N33300?

A: Both parts share identical electrical specifications: 5300Vrms isolation voltage, 500% current transfer ratio, 150mA output current, and -55°C ~ 100°C operating temperature. Both are classified as obsolete. The 4N33 is the base product number for this family.

Q: Is 4N33-X001 a suitable replacement?

A: 4N33-X001 maintains isolation voltage and temperature range compatibility but has reduced output current (100mA vs. 150mA). It is suitable if your circuit design requires no more than 100mA per channel. This part has active status and RoHS3 compliance, supporting long-term procurement.

Q: Are all substitute parts in the same package?

A: Yes. All listed parts use 6-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical and pin compatibility on PCB layouts.

Q: What compliance certifications apply to these parts?

A: 4N33300 and 4N33 are REACH Unaffected with EAR99 classification. 4N33VM and 4N33-X001 are ROHS3 Compliant and REACH Unaffected with EAR99 classification.