MCR100-8-AP Equivalent & Substitute Parts

Part Overview

The MCR100-8-AP is a sensitive gate SCR (Silicon Controlled Rectifier) rated for 600V off-state voltage and 800mA on-state current in a through-hole TO-92 package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The MCR100-8-AP serves as a thyristor switch in low-power AC control applications requiring gate sensitivity and thermal stability across industrial temperature ranges.

Substiute Parts

MCR100-8-AP

Micro Commercial CoIn Stock: 833MCR100-8-AP Datasheet

Current PartRFQ

S6X8ES

Littelfuse Inc.In Stock: 5201S6X8ES Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MCR100-8-AP is determined by matching the following critical electrical and mechanical parameters:

• Off-state voltage rating (600V minimum)
• On-state current capability (800mA RMS minimum)
• Gate trigger voltage and current specifications (sensitive gate characteristic)
• On-state voltage drop (Vtm) within acceptable limits
• Hold current specification
• Through-hole TO-92 package compatibility
• Operating temperature range (-40°C to 125°C)

The S6X8ES from Littelfuse Inc. meets these substitution criteria as an active product with identical voltage ratings, current ratings, package type, and operating temperature range. Both components are classified as sensitive gate SCRs with matching mechanical form factors and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

The S6X8ES is the primary substitute for the obsolete MCR100-8-AP. Selection is based on the following factors:

• Product Status: S6X8ES is active and in production, ensuring long-term availability and supply chain continuity
• Electrical Equivalence: All critical parameters match the MCR100-8-AP specification, including voltage ratings, current ratings, and gate characteristics
• Compliance: Both components are ROHS3 compliant with identical regulatory classifications (ECCN: EAR99, HTSUS: 8541.30.0080)
• Packaging: Identical TO-92 through-hole package enables direct mechanical substitution without PCB redesign
• Thermal Performance: Matching operating temperature range (-40°C to 125°C) ensures equivalent thermal behavior in target applications

The S6X8ES is suitable for direct replacement in existing designs without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the S6X8ES replace the MCR100-8-AP in existing designs?

A: Yes. The S6X8ES meets all electrical and mechanical specifications of the MCR100-8-AP. Both components share identical voltage ratings (600V), current ratings (800mA RMS), gate trigger specifications, on-state voltage, and TO-92 package configuration. Direct substitution is possible without circuit redesign.

Q: Are there differences in gate trigger current specifications?

A: The MCR100-8-AP specifies a maximum gate trigger current (Igt) of 80µA, while the S6X8ES specifies 200µA maximum. Both values fall within the sensitive gate classification. The S6X8ES specification is less stringent, meaning it requires more gate current to trigger. This does not prevent substitution in circuits designed for the MCR100-8-AP, as the gate drive circuit will provide sufficient current for reliable triggering.

Q: What is the difference in off-state leakage current?

A: The MCR100-8-AP specifies a maximum off-state current of 10µA, while the S6X8ES specifies 3µA maximum. The S6X8ES exhibits lower leakage, which is advantageous for low-power standby applications and does not create compatibility issues.

Q: Are both components RoHS compliant?

A: Yes. Both the MCR100-8-AP and S6X8ES are ROHS3 compliant, meeting current environmental and material restriction requirements.

Q: Can the S6X8ES be used in the same PCB footprint?

A: Yes. Both components use the TO-92-3 package with identical lead spacing and mechanical dimensions, enabling direct PCB footprint compatibility without layout modifications.