HCTC-20-2.9 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The HCTC-20-2.9 is a through-hole common mode choke manufactured by Signal Transformer, designed for power line filtering applications. This component provides 20 mH inductance at 1 kHz with a maximum current rating of 2.9A and operates across the temperature range of -55°C to 105°C. The part is currently in active production status with 992 units available in inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter set. The primary substitute identified is the Bourns Inc. 8110-RC, which maintains critical electrical characteristics while offering alternative packaging and availability options.

Substiute Parts

HCTC-20-2.9

Signal TransformerIn Stock: 1085HCTC-20-2.9 Datasheet

Current PartRFQ

8110-RC

Bourns Inc.In Stock: 8728110-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCTC-20-2.9 is determined by strict equivalence across the following parameters:

• Inductance value: 20 mH @ 1 kHz
• Current rating: 2.9A maximum
• DC resistance: 210mOhm maximum
• Line configuration: 2-line common mode choke
• Mounting technology: Through-hole
• Operating temperature range: -55°C to 105°C
• Pin configuration: Vertical, 4 PC Pin
• Regulatory compliance: ROHS3 Compliant

The Bourns Inc. 8110-RC meets all electrical and mechanical substitution criteria. Physical dimensions vary slightly in width (0.800" vs 0.600"), but both components maintain identical height and pin configuration, allowing direct board-level substitution in through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

Both the HCTC-20-2.9 and 8110-RC are active production components with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

• Availability: HCTC-20-2.9 has 992 units in stock; 8110-RC has 807 units in stock
• Packaging format: HCTC-20-2.9 supplied in Tray; 8110-RC supplied in Bulk
• Physical footprint: Width difference of 0.200" (5.08mm) may impact board layout in space-constrained applications
• Supply chain continuity: Either part provides equivalent electrical performance for power line filtering applications requiring 20 mH inductance at 2.9A

Frequently Asked Questions (FAQ)

Q: Can the 8110-RC directly replace the HCTC-20-2.9 in existing designs?

A: Yes. Both components share identical electrical specifications (20 mH @ 1 kHz, 2.9A, 210mOhm DCR), pin configuration (Vertical, 4 PC Pin), and operating temperature range (-55°C to 105°C). The width dimension difference (0.200") must be verified against board layout constraints.

Q: What determines if a part qualifies as a substitute for the HCTC-20-2.9?

A: Substitution requires equivalence in inductance value, current rating, DC resistance, line count, mounting type, pin configuration, and operating temperature range. All regulatory certifications (ROHS3, REACH) must also match.

Q: Are there differences in packaging that affect component handling?

A: The HCTC-20-2.9 is supplied in Tray packaging, while the 8110-RC is supplied in Bulk packaging. This affects receiving, storage, and pick-and-place automation considerations but does not impact electrical performance or board-level functionality.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the HCTC-20-2.9 and 8110-RC are ROHS3 compliant and REACH unaffected, with identical ECCN (EAR99) and HTSUS (8548.00.0000) classifications.