Equivalent & Substitute Parts for BC857BQBZ

Part Overview

The BC857BQBZ from Nexperia USA Inc. is a PNP bipolar junction transistor within the category of Transistors, Bipolar (BJT). The device features a maximum collector-emitter voltage of 45 V, maximum collector current of 100 mA, and power dissipation rating of 340 mW. It is packaged in a DFN1110D-3 surface mount, wettable flank case. The product status is listed as obsolete, creating the necessity to identify functionally and mechanically equivalent or substitute models to ensure ongoing design support or maintenance.

Substiute Parts

BC857BQBZ

Nexperia USA Inc.In Stock: 860BC857BQBZ Datasheet

Current PartRFQ

BC857BQB-QZ

Nexperia USA Inc.In Stock: 1000BC857BQB-QZ Datasheet

MFR RecommendedRFQ

BC857BFA-7B

Diodes IncorporatedIn Stock: 45193BC857BFA-7B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is defined strictly by the alignment of critical electrical, thermal, and mechanical parameters. Key parameters used to determine equivalence include transistor type, maximum collector-emitter voltage, maximum collector current, maximum power dissipation, DC current gain, collector cutoff current, Vce saturation voltage, package type, mounting method, RoHS and REACH status, and operating temperature. Only parts matching these criteria are included as valid substitutes for the BC857BQBZ.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed, including BC857BQB-QZ and BC857BFA-7B, are active products and compliant with ROHS3 and REACH standards. These substitutes are classified as EAR99, aligning with export control requirements. The moisture sensitivity level for both substitutes is MSL 1 (unlimited), versus MSL 3 for the original, which can impact handling and storage. Substitute selection must factor in the package and mounting compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q1: What substitution criteria are used for BC857BQBZ replacements?
A1: Substitution is determined by matching critical parameters such as transistor type, maximum voltage and current ratings, power dissipation, DC current gain, collector cutoff current, Vce saturation, mounting method, package form, RoHS/REACH status, and operating temperature.

Q2: Are package dimensions or mounting styles different among substitutes?
A2: Substitute parts use compatible surface mount technology but may differ in specific package codes or supplier device package names. BC857BQB-QZ shares the DFN1110D-3 package with BC857BQBZ, while BC857BFA-7B uses an X2-DFN0806-3 package.

Q3: How does the moisture sensitivity level affect substitute handling?
A3: The main part has MSL 3 (168 hours), while both substitute parts list MSL 1 (unlimited), allowing greater flexibility in storage and handling.

Q4: Are all substitute parts RoHS and REACH compliant?
A4: Yes, all substitutes listed are ROHS3 compliant and REACH unaffected.

Q5: Is there a difference in product status between substitutes and the main part?
A5: The BC857BQBZ is obsolete, whereas both BC857BQB-QZ and BC857BFA-7B are listed as active.

Q6: Are there differences in electrical parameters that should be noted?
A6: Key electrical parameters such as maximum voltage, current, and DC current gain are aligned. Vce saturation voltage and power dissipation show minor differences as per the provided data.