OCP-PCT114/C Equivalent & Substitute Parts Reference

Part Overview

The OCP-PCT114/C is a 5000Vrms optoisolator with transistor output manufactured by Lumex Opto/Components Inc. in 4-DIP through-hole packaging. This single-channel device is designed for DC input applications requiring galvanic isolation in industrial and consumer electronics. The part is active and in production with 2150 units currently in stock. Substitute parts are necessary to address supply chain flexibility, extended temperature range requirements, or specific current transfer ratio specifications for application optimization.

Substiute Parts

OCP-PCT114/C

Lumex Opto/Components Inc.In Stock: 2211OCP-PCT114/C Datasheet

Current PartRFQ

FOD817

onsemiIn Stock: 18140FOD817 Datasheet

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FOD817A

onsemiIn Stock: 20361FOD817A Datasheet

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FOD817B

onsemiIn Stock: 9764FOD817B Datasheet

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FOD817C

onsemiIn Stock: 18744FOD817C Datasheet

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FOD817C300

onsemiIn Stock: 32138FOD817C300 Datasheet

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FOD817D

onsemiIn Stock: 1943FOD817D Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OCP-PCT114/C is determined by the following mandatory parameters:

Electrical Compatibility Requirements:

• Voltage - Isolation: 5000Vrms (exact match required)
• Number of Channels: 1 (exact match required)
• Output Type: Transistor (exact match required)
• Input Type: DC (exact match required)
• Current - Output / Channel: 50mA (exact match required)
• Voltage - Forward (Vf) (Typ): 1.2V (exact match required)
• Current - DC Forward (If) (Max): 50mA (exact match required)

Mechanical Compatibility Requirements:

• Package / Case: 4-DIP (0.300", 7.62mm) (exact match required)
• Mounting Type: Through Hole (exact match required)

Allowable Parameter Variations:

• Voltage - Output (Max): 60V minimum (substitutes may exceed this value)
• Vce Saturation (Max): 300mV maximum (substitutes may be lower)
• Current Transfer Ratio: Ranges may vary within application tolerance
• Rise / Fall Time: Variations acceptable within switching performance requirements
• Operating Temperature: Extended ranges acceptable
• Compliance Status: ROHS3 and REACH requirements maintained

All onsemi FOD817 series variants meet these substitution criteria and are electrically and mechanically compatible with the OCP-PCT114/C.

Parameter Comparison

Engineering Selection Recommendations

All FOD817 series variants from onsemi are direct substitutes for the OCP-PCT114/C based on electrical and mechanical compatibility. Selection among substitute options depends on application-specific current transfer ratio requirements:

FOD817: Minimum CTR 50% @ 5mA. Suitable for applications requiring lower current transfer ratio specifications. Highest inventory availability at 18111 units.

FOD817A: Minimum CTR 80% @ 5mA. Intermediate current transfer ratio range. Largest inventory stock at 20300 units.

FOD817B: Minimum CTR 130% @ 5mA. Mid-range current transfer ratio specification.

FOD817C / FOD817C300: Minimum CTR 200% @ 5mA. Identical electrical specifications with FOD817C300 offering highest inventory at 32088 units.

FOD817D: Minimum CTR 300% @ 5mA. Highest current transfer ratio specification. Lowest inventory at 1840 units.

All substitutes provide improved Vce saturation (200mV vs. 300mV), faster switching times (4µs/3µs vs. 5µs/4µs), and extended operating temperature range (-55°C to 110°C vs. -30°C to 100°C). All parts maintain ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can FOD817 series parts directly replace OCP-PCT114/C in existing PCB designs?

A: Yes. All FOD817 variants are pin-compatible 4-DIP through-hole packages with identical 0.300" (7.62mm) spacing. No PCB modifications are required for mechanical or electrical interface.

Q: What is the primary difference between FOD817 variants?

A: Current Transfer Ratio (CTR) specifications differ across variants. FOD817 has 50-600% CTR, FOD817A has 80-160% CTR, FOD817B has 130-260% CTR, FOD817C/C300 have 200-400% CTR, and FOD817D has 300-600% CTR. All other electrical parameters remain identical.

Q: Are there compliance or certification differences between OCP-PCT114/C and FOD817 substitutes?

A: No. Both the main part and all substitutes are ROHS3 compliant and REACH unaffected. ECCN and HTSUS classifications are identical.

Q: Which FOD817 variant should be selected for general-purpose replacement?

A: FOD817C or FOD817C300 provide balanced specifications with CTR 200-400% @ 5mA and highest inventory availability (18671 and 32088 units respectively). These variants offer improved performance margins over the original OCP-PCT114/C.

Q: Do FOD817 substitutes operate at the same temperature range as OCP-PCT114/C?

A: FOD817 variants operate across -55°C to 110°C, which exceeds the OCP-PCT114/C range of -30°C to 100°C. This extended range provides additional design margin for temperature-sensitive applications.

Q: What is the significance of the 200mV Vce saturation in FOD817 parts versus 300mV in OCP-PCT114/C?

A: Lower Vce saturation reduces output voltage drop across the transistor, resulting in improved efficiency and reduced power dissipation in the output stage. This is a performance advantage for FOD817 substitutes.

Q: Are there any electrical parameter limitations when substituting OCP-PCT114/C with FOD817 variants?

A: All FOD817 variants meet or exceed the electrical specifications of OCP-PCT114/C. Maximum output voltage is 70V (vs. 60V), maximum output current is 50mA (identical), and isolation voltage is 5000Vrms (identical). No electrical limitations exist for substitution.