HCTC-7.3-9.3 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The HCTC-7.3-9.3 is a 2-line common mode choke manufactured by Signal Transformer, designed for power line filtering applications. This through-hole component features 7.3 mH inductance at 1 kHz with a maximum current rating of 9.3A and 32 mOhm DC resistance. The component is actively produced and ROHS3 compliant, making it suitable for modern electronic equipment requiring EMI suppression in AC power distribution circuits. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same functional category.

Substiute Parts

HCTC-7.3-9.3

Signal TransformerIn Stock: 782HCTC-7.3-9.3 Datasheet

Current PartRFQ

8118-RC

Bourns Inc.In Stock: 12058118-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCTC-7.3-9.3 is determined by the following critical parameters:

• Inductance value: 7.3 mH @ 1 kHz
• Current rating: 9.3A maximum
• DC resistance: 32 mOhm maximum
• Number of lines: 2-line configuration
• Mounting type: Through hole
• Operating temperature range: -55°C ~ 105°C minimum
• Package configuration: Vertical, 4 PC pin

The substitute part 8118-RC from Bourns Inc. meets all these electrical and mechanical requirements, enabling direct functional replacement in circuit applications where the HCTC-7.3-9.3 is specified.

Parameter Comparison

Engineering Selection Recommendations

Both the HCTC-7.3-9.3 and 8118-RC are active products with identical electrical specifications and regulatory compliance status. Selection between these parts should be based on:

• Availability and lead time requirements
• Packaging format preference (Tray vs. Bulk)
• Dimensional tolerance considerations (width difference: 0.600" vs. 0.800")
• Supply chain and procurement policies

Both components satisfy ROHS3 compliance and REACH unaffected status, making them suitable for applications requiring modern environmental and regulatory adherence.

Frequently Asked Questions (FAQ)

Q: Can the 8118-RC directly replace the HCTC-7.3-9.3 in existing designs?

A: Yes. Both parts share identical electrical specifications (7.3 mH inductance, 9.3A current rating, 32 mOhm DCR) and mounting configuration (through-hole, vertical 4-pin). The primary difference is physical width (0.600" vs. 0.800"), which must be verified against PCB layout constraints.

Q: What is the significance of the inductance specification at 1 kHz?

A: The 7.3 mH @ 1 kHz specification defines the component's filtering performance at the standard measurement frequency. This value must be matched for equivalent EMI suppression characteristics in power line applications.

Q: Are there packaging differences between these parts?

A: Yes. The HCTC-7.3-9.3 is supplied in Tray packaging, while the 8118-RC is supplied in Bulk packaging. This affects handling, storage, and procurement processes but does not impact electrical performance.

Q: Do both parts meet current environmental regulations?

A: Yes. Both the HCTC-7.3-9.3 and 8118-RC are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the maximum operating temperature for these components?

A: Both parts operate across the temperature range of -55°C to 105°C, suitable for industrial and commercial applications requiring extended thermal performance.