HCT-442 Equivalent & Substitute Parts

Part Overview

The HCT-442 is a 4.2 µH shielded toroidal inductor manufactured by API Delevan Inc., rated for 12.8 A continuous current with a maximum DC resistance of 5.4 mOhm. This surface mount component operates across the temperature range of -30°C to 130°C and is designed for applications requiring low-profile, shielded magnetic coupling in compact form factors.

The part maintains active product status with 1102 units in current inventory. Substitute parts may be required due to supply constraints, design optimization needs, or specific compliance requirements in target applications.

Substiute Parts

HCT-442

API Delevan Inc.In Stock: 1194HCT-442 Datasheet

Current PartRFQ

PE-53681NL

Pulse ElectronicsIn Stock: 1016PE-53681NL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HCT-442 is determined by the following critical parameters:

Primary Substitution Criteria:

• Inductance value within acceptable tolerance for circuit function
• Current rating sufficient for application requirements
• DC resistance matching or lower than specification
• Surface mount package compatibility
• Operating temperature range coverage
• Shielding characteristics appropriate for EMI environment

The PE-53681NL is identified as a substitute part. However, this substitution involves trade-offs in inductance value (2.5 µH versus 4.2 µH), current rating (11.4 A versus 12.8 A), shielding configuration (unshielded versus shielded), and compliance status. These differences must be evaluated against specific circuit requirements before implementation.

Parameter Comparison

Engineering Selection Recommendations

HCT-442 Selection: Use the HCT-442 for applications requiring the specified 4.2 µH inductance value with shielded magnetic coupling. The part is active in production with established supply. RoHS non-compliance must be verified against end-product regulatory requirements.

PE-53681NL Selection: The PE-53681NL presents a lower inductance value (2.5 µH) and reduced current rating (11.4 A). Selection of this substitute is appropriate only when circuit design accommodates the inductance reduction and current derating. The unshielded configuration may introduce EMI considerations in sensitive applications. ROHS3 compliance provides regulatory advantage for restricted substance applications. The extended lower operating temperature limit (-40°C) offers thermal margin in cold environment applications.

Both parts share identical DC resistance specification and MSL rating, supporting thermal and moisture handling equivalence in manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can PE-53681NL directly replace HCT-442 in all applications?

A: No. The PE-53681NL has lower inductance (2.5 µH vs. 4.2 µH) and lower current rating (11.4 A vs. 12.8 A). Direct substitution requires circuit validation to confirm the inductance reduction does not degrade performance and that the lower current rating is acceptable for the application.

Q: What is the impact of the shielding difference?

A: HCT-442 is shielded; PE-53681NL is unshielded. Shielded inductors reduce electromagnetic interference coupling to nearby circuits. In applications sensitive to EMI, the unshielded PE-53681NL may require additional circuit-level filtering or layout considerations.

Q: Are the physical dimensions compatible?

A: The parts have similar footprints (16.89mm vs. 17.02mm length/width) and are both surface mount. Height differs slightly (10.16mm vs. 9.91mm), which may affect board clearance in space-constrained designs. Verify PCB layout compatibility before substitution.

Q: What is the significance of RoHS compliance differences?

A: HCT-442 is RoHS non-compliant; PE-53681NL is ROHS3 compliant. For products subject to RoHS regulations in target markets, PE-53681NL provides compliance advantage. Verify regulatory requirements for your end application.

Q: Do both parts have the same moisture sensitivity?

A: Yes. Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.

Q: What is the operating temperature consideration?

A: HCT-442 operates -30°C to 130°C; PE-53681NL operates -40°C to 130°C. PE-53681NL provides extended low-temperature performance. For applications below -30°C, PE-53681NL is required if inductance and current specifications are acceptable.