Equivalent & Substitute Parts for BUT11AI,127

Part Overview

The NXP USA Inc. BUT11AI,127 is an NPN Bipolar (BJT) Transistor rated at 450 V, 5 A, and 100 W in a TO-220AB through-hole package. This component is classified as obsolete and is no longer in active production, which necessitates the identification of alternative models for maintenance, redesigns, and ongoing manufacturing needs. Only parts matching strictly specified electrical, mechanical, environmental, and regulatory parameters are qualified as substitutes in alignment with engineering best practices for the Transistors, Bipolar (BJT) category.

Substiute Parts

BUT11AI,127

NXP USA Inc.In Stock: 1146BUT11AI,127 Datasheet

Current PartRFQ

BUL38D

STMicroelectronicsIn Stock: 8764BUL38D Datasheet

MFR RecommendedRFQ

MJE18004G

onsemiIn Stock: 1405MJE18004G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution in the Transistors, Bipolar (BJT) category is governed by explicit matching on parameters including: transistor type, maximum collector current (Ic), collector-emitter breakdown voltage (Vce), Vce saturation, collector cutoff current, minimum DC current gain (hFE), maximum power dissipation, operating temperature, mounting type, package/case, and regulatory compliance. Each allowable substitute part adheres to these constraints as supplied in the manufacturer documentation for the referenced part numbers.

Key parameters considered for equivalent selection are:

• Transistor Type: NPN
• Current - Collector (Ic) (Max)
• Voltage - Collector Emitter Breakdown (Max)
• Vce Saturation (Max) @ Ib, Ic
• Current - Collector Cutoff (Max)
• DC Current Gain (hFE) (Min) @ Ic, Vce
• Power - Max
• Operating Temperature
• Mounting Type
• Package / Case
• RoHS and REACH Status

Parameter Comparison

Engineering Selection Recommendations

The main part BUT11AI,127 is classified as obsolete. Both substitute parts, BUL38D and MJE18004G, have an active product status, ROHS3 compliance, and REACH unaffected declarations, aligning with contemporary regulatory requirements. Each substitute is supplied in a through-hole TO-220-3 package suitable for direct mechanical and soldering replacement, considering only the explicitly provided technical and compliance data.

Frequently Asked Questions (FAQ)

Q1: What determines a valid substitute for BUT11AI,127 in the Transistors, Bipolar (BJT) category?
A1: A valid substitute matches the transistor type, maximum collector current, maximum collector-emitter breakdown voltage, saturation voltage, cutoff current, minimum DC current gain, maximum power dissipation, operating temperature, mounting style, package/case, and regulatory compliance.

Q2: Are all potential substitutes mechanically compatible with the BUT11AI,127 footprint?
A2: All referenced substitutes (BUL38D, MJE18004G) use a TO-220-3 through-hole package, ensuring mechanical compatibility based on the provided specifications.

Q3: Do the substitute parts comply with RoHS and REACH requirements?
A3: Each listed substitute is ROHS3 compliant and declared REACH unaffected as per the manufacturer's provided data.

Q4: Does the selection include only active production status substitute parts?
A4: Yes, all listed substitute parts have an active status, whereas the original part is obsolete.

Q5: Is it necessary to adjust circuit or PCB design when using the listed substitutes?
A5: All substitutes comply with the specified package, mounting, and key electrical parameters provided, aligning with direct replacement scenarios within the defined scope of input parameters.