MOC8107300 Equivalent & Substitute Parts

Part Overview

The MOC8107300 is a transistor output optoisolator 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 and is rated for DC input with transistor output capability up to 50mA per channel.

The MOC8107300 is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure availability for new production runs or system updates where this part is specified.

Substiute Parts

MOC8107300

onsemiIn Stock: 923MOC8107300 Datasheet

Current PartRFQ

CNY17F3VM

Fairchild SemiconductorIn Stock: 20492CNY17F3VM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOC8107300 is evaluated based on the following critical parameters that define functional equivalence:

• Package Compatibility: 6-DIP (0.300", 7.62mm) through-hole mounting
• Channel Configuration: Single channel operation
• Output Type: Transistor output topology
• Isolation Voltage: Minimum 4170Vrms (acceptable reduction from 5300Vrms for non-critical isolation applications)
• Current Transfer Ratio: Minimum 100% @ 10mA
• Maximum Output Voltage: 70V
• Maximum Output Current: 50mA per channel
• Input Type: DC
• Operating Temperature: Overlap within specified range

The CNY17F3VM from Fairchild Semiconductor meets these substitution criteria with compatible electrical and mechanical characteristics, though with noted parameter variations in isolation voltage and current transfer ratio maximum.

Parameter Comparison

Engineering Selection Recommendations

MOC8107300 (onsemi): Obsolete status restricts availability for new designs. Existing inventory of 868 pieces may support legacy system maintenance only.

CNY17F3VM (Fairchild Semiconductor): Active product status with 20,450 pieces in stock provides reliable long-term availability. This component is suitable as a substitute where the following conditions are met:

• Application isolation voltage requirement does not exceed 4170Vrms
• Circuit design accommodates maximum current transfer ratio of 200% @ 10mA
• Timing specifications tolerate rise/fall times up to 4µs and 4.6µs respectively
• Input drive circuit can supply maximum 60mA DC forward current
• Operating temperature range minimum of -40°C is acceptable
• Forward voltage tolerance of 1.35V is compatible with input circuit design

Both components share identical package, channel configuration, output type, maximum output voltage, and maximum output current specifications. Compliance certifications (ECCN: EAR99, HTSUS: 8541.49.8000) are equivalent.

Frequently Asked Questions (FAQ)

Q: Can CNY17F3VM directly replace MOC8107300 in all applications?

A: Direct replacement is possible only when the application does not require the full 5300Vrms isolation rating of the MOC8107300. The CNY17F3VM provides 4170Vrms isolation, which is suitable for most standard industrial and consumer applications. Circuit-level verification is necessary for high-voltage isolation-critical designs.

Q: What are the timing differences between these parts?

A: Both parts share identical turn-on and turn-off times (2µs and 3µs respectively). However, rise and fall times differ: MOC8107300 specifies 1µs and 2µs typical, while CNY17F3VM specifies 4µs and 4.6µs maximum. Applications with strict timing requirements must account for this difference.

Q: Are there temperature range limitations with CNY17F3VM?

A: Yes. The CNY17F3VM operates from -40°C to 100°C, compared to MOC8107300's -55°C to 100°C range. If your application requires operation below -40°C, the CNY17F3VM is not suitable.

Q: What is the impact of different current transfer ratios?

A: MOC8107300 maximum current transfer ratio is 300% @ 10mA, while CNY17F3VM is 200% @ 10mA. Both maintain the same 100% minimum. Circuit designs relying on the higher maximum CTR of the MOC8107300 must be re-evaluated for the CNY17F3VM to ensure adequate output current under worst-case conditions.

Q: Are the packages truly identical?

A: Yes. Both components use 6-DIP (0.300", 7.62mm) through-hole packages with identical pinout and mechanical dimensions, allowing direct socket substitution from a physical standpoint.

Q: What about input current requirements?

A: MOC8107300 supports maximum DC forward current of 100mA, while CNY17F3VM supports 60mA maximum. Input drive circuits must be verified to operate within the CNY17F3VM's 60mA limit to prevent component damage.