8116-RC Common Mode Choke Equivalent & Substitute Parts

Part Overview

The Bourns 8116-RC is a 50 mH, 2-line common mode choke designed for through-hole mounting applications requiring EMI filtering in power line circuits. This component operates at 2.3A maximum current with 450mOhm DC resistance and maintains performance across the -55°C to 105°C temperature range. The part is Active status and ROHS3 compliant, making it suitable for current production designs. Equivalent and substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained across the allowed parameter set.

Substiute Parts

8116-RC

Bourns Inc.In Stock: 9678116-RC Datasheet

Current PartRFQ

HCTC-50-2.3

Signal TransformerIn Stock: 1409HCTC-50-2.3 Datasheet

DirectRFQ

CMT-8116

Triad MagneticsIn Stock: 860CMT-8116 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 8116-RC are classified based on strict electrical and mechanical parameter matching:

Direct Substitutes maintain all critical electrical parameters: 50 mH inductance at 1 kHz, 2-line configuration, 2.3A current rating, and 450mOhm maximum DCR. Mechanical compatibility is confirmed through identical mounting type (through-hole), package configuration (vertical 4-pin), and operating temperature range (-55°C to 105°C). All substitute candidates must be ROHS3 compliant and maintain EAR99 ECCN classification.

Key Parameters for Substitution:

• Inductance: 50 mH @ 1 kHz (exact match required)
• Current Rating: 2.3A (exact match required)
• DC Resistance: 450mOhm maximum (exact match required)
• Number of Lines: 2 (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package Configuration: Vertical, 4 PC Pin (exact match required)
• Operating Temperature: -55°C ~ 105°C (exact match required)

Parameter Comparison

Engineering Selection Recommendations

HCTC-50-2.3 (Signal Transformer): This part meets all electrical specifications and maintains through-hole mounting compatibility. The width dimension differs at 0.600" versus 0.800", which may affect PCB layout spacing. All parts share identical height and pin configuration. ROHS3 compliance and Active product status confirm suitability for current designs. Signal Transformer classification as Power Line filter type aligns with application requirements.

CMT-8116 (Triad Magnetics): This substitute maintains all critical electrical parameters and identical physical dimensions to the 8116-RC. The CMT-8116 includes additional AC voltage rating (1500V / 1.5kV) and multiple approval agencies (CSA, IEC, UL, VDE), providing enhanced certification coverage. ROHS3 compliance and Active product status support direct substitution. Identical footprint and height ensure PCB compatibility without layout modification.

Both substitutes are Active products with ROHS3 compliance and EAR99 ECCN classification, matching the regulatory and compliance profile of the original 8116-RC.

Frequently Asked Questions (FAQ)

Q: Can HCTC-50-2.3 be used as a direct replacement for 8116-RC? A: HCTC-50-2.3 meets all electrical specifications (50 mH, 2.3A, 450mOhm DCR) and mounting requirements. The width dimension is 0.600" versus 0.800", which may require PCB layout verification to confirm adequate spacing around the component footprint.

Q: What is the primary difference between CMT-8116 and 8116-RC? A: CMT-8116 maintains identical electrical specifications and physical dimensions. The primary difference is the addition of AC voltage rating (1500V) and multiple approval certifications (CSA, IEC, UL, VDE) on the CMT-8116, providing broader regulatory coverage.

Q: Are all three parts pin-compatible? A: Yes. All three parts use vertical 4-pin configuration with identical height (1.650" maximum) and through-hole mounting type, ensuring pin-level compatibility.

Q: Which substitute offers the best compliance coverage? A: CMT-8116 includes CSA, IEC, UL, and VDE approvals in addition to ROHS3 compliance. HCTC-50-2.3 and 8116-RC both meet ROHS3 requirements without additional agency certifications listed.

Q: Can these parts be used interchangeably in production? A: All three parts are Active status with ROHS3 compliance and identical electrical specifications. Substitution is valid provided PCB layout accommodates the dimensional variations, particularly the width difference of HCTC-50-2.3.

Q: What is the moisture sensitivity level consideration? A: 8116-RC specifies MSL 1 (Unlimited). HCTC-50-2.3 and CMT-8116 list MSL as Not Applicable, indicating no moisture sensitivity restrictions for these alternatives.