CNC7S101S Optoisolator - Equivalent & Substitute Parts

Part Overview

The CNC7S101S is a Panasonic optoisolator with transistor output, rated for 5000Vrms isolation voltage in a 4-DIL package. This component provides galvanic isolation for single-channel applications requiring AC or DC input control with transistor output switching. The product is currently obsolete, making substitute parts necessary for ongoing system support and new designs requiring equivalent functionality.

Substiute Parts

CNC7S101S

Panasonic Electronic ComponentsIn Stock: 817CNC7S101S Datasheet

Current PartRFQ

LTV-814

Lite-On Inc.In Stock: 57115LTV-814 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CNC7S101S is determined by the following critical parameters:

• Isolation Voltage: 5000Vrms (primary isolation requirement)
• Number of Channels: 1 (single-channel configuration)
• Output Type: Transistor (switching output topology)
• Package / Case: 4-DIP (0.300", 7.62mm) (mechanical and electrical compatibility)
• Input Type: AC, DC (input signal compatibility)
• Current - Output / Channel: 50mA (load switching capability)
• Vce Saturation (Max): 200mV (output saturation performance)

The LTV-814 from Lite-On Inc. meets all critical substitution criteria. Both components share identical isolation voltage, channel count, output type, package dimensions, input type compatibility, output current rating, and saturation voltage specification. The LTV-814 is an active product with higher inventory availability, making it a direct functional equivalent for CNC7S101S applications.

Parameter Comparison

Engineering Selection Recommendations

The LTV-814 is the direct substitute for CNC7S101S applications. Selection is based on the following factors:

Product Status: The CNC7S101S is obsolete. The LTV-814 is an active product with current manufacturing support and high inventory availability (57,024 pcs in stock versus 749 pcs for the obsolete CNC7S101S).

Compliance: The LTV-814 carries ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. Both components share EAR99 ECCN classification and identical HTSUS codes.

Electrical Equivalence: Both components meet the critical isolation voltage (5000Vrms), channel count (1), output type (transistor), and saturation voltage (200mV) specifications. Rise and fall times are identical at 4µs and 3µs respectively.

Parameter Differences: The LTV-814 has a lower minimum current transfer ratio (20% versus 100%) and lower maximum output voltage (35V versus 80V). Applications requiring the CNC7S101S's higher output voltage rating or minimum CTR specification must evaluate circuit requirements against LTV-814 performance limits.

Package Compatibility: Both components use identical 4-DIP (0.300", 7.62mm) through-hole packages, enabling direct PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can the LTV-814 directly replace the CNC7S101S in existing designs?

A: The LTV-814 is mechanically and electrically compatible for most applications. Both components share identical package dimensions, isolation voltage, channel count, output type, and saturation voltage. However, verify that your circuit does not require the CNC7S101S's higher maximum output voltage (80V) or minimum current transfer ratio (100%). If your design operates within the LTV-814's 35V maximum output voltage and 20% minimum CTR specifications, direct substitution is valid.

Q: What are the key differences between CNC7S101S and LTV-814?

A: The primary differences are: (1) Current Transfer Ratio minimum is 100% for CNC7S101S versus 20% for LTV-814; (2) Maximum output voltage is 80V for CNC7S101S versus 35V for LTV-814; (3) Operating temperature range is -30°C to 100°C for CNC7S101S versus -30°C to 110°C for LTV-814; (4) CNC7S101S is obsolete while LTV-814 is active production. All other critical parameters are identical.

Q: Are there any compliance or certification differences?

A: The LTV-814 is ROHS3 compliant and REACH unaffected. The CNC7S101S specifications do not list RoHS or REACH status. Both components share identical EAR99 ECCN classification and HTSUS code 8541.49.8000, and both have MSL rating of 1 (Unlimited).

Q: What is the packaging difference between the two parts?

A: The CNC7S101S is supplied in standard packaging (not specified). The LTV-814 is supplied in tube packaging. Both use identical 4-DIP (0.300", 7.62mm) through-hole package cases, so PCB compatibility is maintained regardless of supplier packaging format.

Q: Which part should I select for new designs?

A: Select the LTV-814 for new designs. It is an active product with current manufacturing support, higher inventory availability, and modern compliance certifications (ROHS3). The CNC7S101S is obsolete and should not be used for new development.

Q: Can I use LTV-814 in applications requiring 80V output switching?

A: No. The LTV-814 has a maximum output voltage rating of 35V. Applications requiring the CNC7S101S's 80V output capability cannot use the LTV-814 as a substitute. Alternative optoisolators with higher voltage ratings must be evaluated.