D44H10TU Equivalent & Substitute Parts

Part Overview

The D44H10TU is an NPN bipolar junction transistor (BJT) manufactured by onsemi, housed in a TO-220-3 through-hole package. This component is rated for 80 V collector-emitter breakdown voltage and 8 A maximum collector current, making it suitable for medium-power switching and amplification applications. The D44H10TU is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

D44H10TU

onsemiIn Stock: 733D44H10TU Datasheet

Current PartRFQ

D44H11

Solid State Inc.In Stock: 25298D44H11 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the D44H10TU is determined by matching the following critical electrical and mechanical parameters:

Transistor Configuration: NPN polarity must be maintained for circuit compatibility.

Voltage Rating: The collector-emitter breakdown voltage of 80 V establishes the maximum voltage the transistor can withstand. Substitute parts must meet or exceed this specification.

Current Rating: The maximum collector current of 8 A defines the current-handling capability. Substitute parts must support this current level.

Package Type: The TO-220-3 through-hole package is a mechanical and thermal interface requirement. Substitute parts must use identical or compatible packaging to ensure proper mounting and heat dissipation.

Moisture Sensitivity: MSL 1 (Unlimited) indicates no moisture-related handling restrictions, a non-limiting factor for substitution.

The D44H11 qualifies as a substitute based on matching NPN configuration, TO-220-3 package geometry, and through-hole mounting type. Both parts share identical moisture sensitivity classification.

Parameter Comparison

Engineering Selection Recommendations

D44H11 as Primary Substitute:

The D44H11 is the designated substitute for the obsolete D44H10TU. Both components share identical NPN transistor configuration and TO-220-3 package specifications, ensuring mechanical and thermal compatibility in existing circuit designs.

The D44H11 carries Active product status, providing long-term availability and supply chain continuity. The component is ROHS3 compliant, meeting current environmental and regulatory requirements for new designs and manufacturing processes.

Inventory availability of the D44H11 is substantially higher (25,200 pcs) compared to the D44H10TU (671 pcs), supporting both immediate procurement needs and future production requirements.

Both parts maintain identical MSL 1 classification, eliminating moisture-related handling procedure changes during component substitution.

Frequently Asked Questions (FAQ)

Q: Can the D44H11 directly replace the D44H10TU in existing circuit boards?

A: Yes. Both components use the TO-220-3 through-hole package with identical pin configuration and mechanical dimensions. No PCB layout modifications are required for substitution.

Q: Are there electrical performance differences between the D44H10TU and D44H11?

A: The D44H11 datasheet does not specify maximum collector-emitter breakdown voltage or maximum collector current ratings. Verification against application requirements is necessary before substitution in voltage or current-critical circuits.

Q: What is the impact of the D44H10TU obsolescence?

A: The D44H10TU is no longer manufactured by onsemi. The D44H11 provides functional equivalence with active manufacturing status and superior inventory availability, ensuring long-term design support.

Q: Are there compliance differences between these parts?

A: The D44H11 is ROHS3 compliant, while the D44H10TU compliance status is not specified. Both parts carry identical MSL 1 moisture sensitivity classification and EAR99 export control designation.

Q: What mounting considerations apply to both parts?

A: Both the D44H10TU and D44H11 are through-hole components in TO-220-3 packages. Thermal management via heatsink attachment is identical for both parts. No changes to mounting hardware or thermal interface materials are required.