QSZ2TR Equivalent & Substitute Parts Reference

Part Overview

QSZ2TR by Rohm Semiconductor is a bipolar (BJT) transistor array featuring both NPN and PNP types in an emitter-coupled configuration. With a maximum rating of 30V collector-emitter breakdown and 1.5A collector current, it operates in a surface mount, SOT-23-5 Thin (TSOT-23-5) package. The device is RoHS3 compliant and reaches a transition frequency of up to 300MHz (NPN) and 280MHz (PNP). This part is currently active and in stock. Alternative models are necessary when supply constraints, obsolescence, or project design flexibility demand compatible substitutes with similar or higher-rated electrical and mechanical characteristics.

Substiute Parts

QSZ2TR

Rohm SemiconductorIn Stock: 3044QSZ2TR Datasheet

Current PartRFQ

CPH5506-TL-E

onsemiIn Stock: 1410CPH5506-TL-E Datasheet

SimilarRFQ

CPH5541-TL-E

onsemiIn Stock: 32080CPH5541-TL-E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for QSZ2TR must possess equivalent or higher ratings in critical parameters: transistor type (NPN, PNP emitter coupled), collector-emitter breakdown voltage, maximum collector current, V_CE saturation, collector cutoff current, DC current gain, power dissipation, transition frequency, and operating temperature rating. Mechanical compatibility is ensured with the same SOT-23-5 Thin or TSOT-23-5 package and surface mount configuration. Only parts fully matching on RoHS and REACH regulatory status are considered.

Parameter Comparison

Engineering Selection Recommendations

Product selection based on QSZ2TR, CPH5506-TL-E, and CPH5541-TL-E must reference both regulatory compliance and product status. QSZ2TR is active and RoHS3 compliant, suitable for ongoing new designs. CPH5506-TL-E and CPH5541-TL-E, although RoHS3 compliant, are obsolete and suited primarily for replacement in legacy equipment or repair scenarios where the main part is unavailable. Each candidate meets REACH requirements and shares MSL 1 level for optimal handling in automated assembly.

Frequently Asked Questions (FAQ)

Q1: What are the essential parameters to evaluate when selecting substitutes for QSZ2TR?
Compatibility is determined by transistor type, collector-emitter voltage, collector current, DC current gain, V_CE saturation, power dissipation, transition frequency, operating temperature, and package.

Q2: Are the substitute parts mechanically compatible with QSZ2TR?
All listed substitute parts use the SOT-23-5 Thin (TSOT-23-5) package, ensuring surface mount compatibility with the QSZ2TR footprint.

Q3: How does product status affect substitute selection?
Active status is preferred for new designs. Obsolete statuses (as with CPH5506-TL-E and CPH5541-TL-E) are primarily for maintenance or drop-in scenarios.

Q4: Do all substitutes have equivalent RoHS and REACH compliance?
QSZ2TR, CPH5506-TL-E, and CPH5541-TL-E are all ROHS3 compliant and REACH unaffected.

Q5: Is the maximum collector current the same across substitute parts?
QSZ2TR and CPH5506-TL-E support 1.5A, while CPH5541-TL-E supports up to 700mA. Review all electrical demands of the application before selection.

Q6: What should be checked regarding power dissipation?
QSZ2TR has 1.25W and CPH5506-TL-E has 1.2W power dissipation ratings. CPH5541-TL-E is limited to 600mW.

Q7: Are there any concerns regarding MSL or environmental handling?
All parts have an MSL of 1 (Unlimited), permitting standard automated surface-mount processes.

Q8: Is there any difference in collector-emitter breakdown voltage among substitutes?
QSZ2TR and CPH5506-TL-E have a 30V rating; CPH5541-TL-E provides a 40V rating for the NPN and 30V for the PNP channel.

Q9: How does transition frequency differ among the models?
Transition frequency ranges from 280MHz to 540MHz among the listed substitutes, exceeding the minimum requirement in all cases.