MOC8105300 Equivalent & Substitute Parts

Part Overview

The MOC8105300 is a single-channel optoisolator with transistor output, rated for 5300Vrms isolation voltage. Manufactured by onsemi, this component is designed for applications requiring galvanic isolation in DC input circuits with transistor-based switching outputs. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning.

Substiute Parts

MOC8105300

onsemiIn Stock: 767MOC8105300 Datasheet

Current PartRFQ

CNY17F2VM

onsemiIn Stock: 1001CNY17F2VM Datasheet

SimilarRFQ

MOC8105

Fairchild SemiconductorIn Stock: 2428MOC8105 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MOC8105300 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Single-channel configuration
• Transistor output topology
• 6-DIP through-hole package (0.300", 7.62mm)
• DC input type
• Operating temperature range compatibility

Secondary Compatibility Criteria:

• Isolation voltage rating (minimum 5300Vrms or equivalent)
• Current transfer ratio range (minimum 65% @ 10mA)
• Maximum output voltage (minimum 30V)
• Output current capability (minimum 50mA per channel)
• Switching time characteristics (turn-on/turn-off and rise/fall times)

The substitute parts identified below meet these criteria within the specified electrical and mechanical tolerances for this optoisolator category.

Parameter Comparison

Engineering Selection Recommendations

MOC8105 (Fairchild Semiconductor): This part provides electrical equivalence to the MOC8105300 with identical isolation voltage (5300Vrms), current transfer ratio range, and output specifications. Both parts are obsolete. The MOC8105 is RoHS3 compliant and available in tube packaging. Selection of this substitute is appropriate for applications where the original onsemi part is unavailable and the Fairchild equivalent meets procurement requirements.

CNY17F2VM (onsemi): This part is an active product from onsemi, offering continued availability and supply chain stability. The CNY17F2VM maintains compatibility across primary parameters: single-channel configuration, transistor output, 6-DIP package, and 50mA output current. The isolation voltage is rated at 4170Vrms, which is lower than the MOC8105300's 5300Vrms rating. The maximum output voltage is 70V compared to 30V on the original part. The operating temperature range is -40°C to 100°C, which does not extend to -55°C. The CNY17F2VM is RoHS3 compliant. This substitute is suitable for applications where the lower isolation voltage and reduced temperature range are acceptable, and where the higher output voltage capability does not create design conflicts.

Frequently Asked Questions (FAQ)

Q: Can the CNY17F2VM replace the MOC8105300 in all applications?

A: The CNY17F2VM is electrically compatible for most applications but has three parameter differences: lower isolation voltage (4170Vrms vs. 5300Vrms), higher maximum output voltage (70V vs. 30V), and a narrower operating temperature range (-40°C to 100°C vs. -55°C to 100°C). Applications requiring the full 5300Vrms isolation rating or operation below -40°C must use the MOC8105 or equivalent 5300Vrms-rated part.

Q: What is the difference between MOC8105300 and MOC8105?

A: Both parts are electrically identical with 5300Vrms isolation voltage, identical current transfer ratios, and matching output specifications. The primary difference is manufacturer: MOC8105300 is onsemi, while MOC8105 is Fairchild Semiconductor. Both are obsolete products. Switching times show minor variations (turn-on/turn-off: 2µs/3µs vs. 3µs/2.3µs; rise/fall: 1µs/2µs vs. 2µs/2µs).

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 6-DIP (0.300", 7.62mm) package with identical through-hole mounting. Pin configuration is compatible across MOC8105300, MOC8105, and CNY17F2VM for direct board-level substitution.

Q: Which substitute should I select for new designs?

A: The CNY17F2VM is recommended for new designs because it is an active product with ongoing manufacturer support and availability. For applications requiring 5300Vrms isolation voltage, the MOC8105 provides direct electrical equivalence to the obsolete MOC8105300.

Q: Does the CNY17F2VM's higher output voltage rating affect circuit design?

A: The CNY17F2VM's 70V maximum output voltage is higher than the MOC8105300's 30V rating. This does not create compatibility issues in circuits designed for 30V operation. The higher rating provides additional design margin and does not require circuit modification.

Q: What compliance certifications apply to these parts?

A: MOC8105300 has REACH Unaffected status and EAR99 ECCN classification. MOC8105 is RoHS3 compliant with REACH Unaffected status and EAR99 ECCN classification. CNY17F2VM is RoHS3 compliant with REACH Unaffected status and EAR99 ECCN classification. All three parts share identical HTSUS code 8541.49.8000.