BSP19-QX Equivalent & Substitute Parts Reference

Part Overview

The BSP19-QX is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in automotive-grade circuits. This device operates at collector voltages up to 350 V with a maximum collector current of 100 mA and delivers 1.2 W power dissipation in a compact SOT-223 package. The BSP19-QX maintains Active product status and carries AEC-Q101 automotive qualification, making it suitable for demanding automotive and industrial applications requiring high voltage switching and amplification.

Identifying equivalent and substitute parts becomes necessary when the primary part number (Tape & Reel packaging variant) experiences supply constraints, when alternative packaging formats better suit manufacturing processes, or when inventory availability requires sourcing from alternative distribution channels while maintaining identical electrical and mechanical performance.

Substiute Parts

BSP19-QX

Nexperia USA Inc.In Stock: 1237BSP19-QX Datasheet

Current PartRFQ

BSP19,115

Nexperia USA Inc.In Stock: 2249BSP19,115 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BSP19-QX is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part BSP19,115 qualifies as a parametric equivalent based on the following criteria:

Electrical Parameter Equivalence: All electrical specifications match exactly: NPN transistor type, 100 mA maximum collector current, 350 V collector-emitter breakdown voltage, 500 mV saturation voltage at specified bias conditions, 20 nA collector cutoff current, 40 minimum DC current gain at 20 mA and 10 V, 1.2 W maximum power dissipation, and 70 MHz transition frequency.

Thermal and Operating Conditions: Both parts operate identically at 150°C maximum junction temperature, ensuring thermal performance equivalence in circuit applications.

Package and Mounting Compatibility: Both parts use the SOT-223 surface mount package with TO-261-4 and TO-261AA case designations, confirming mechanical and PCB layout compatibility.

Automotive and Compliance Standards: Both parts carry Automotive grade classification and AEC-Q101 qualification, ROHS3 compliance, and REACH Unaffected status, ensuring regulatory and quality equivalence.

Packaging Format Difference: The primary distinction between BSP19-QX and BSP19,115 is the supply packaging format: BSP19-QX is supplied in Tape & Reel (TR) format, while BSP19,115 is supplied in Cut Tape (CT) and Digi-Reel® format. This difference affects procurement and assembly processes but does not alter component performance or functionality.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The BSP19-QX and BSP19,115 are electrically and mechanically equivalent components suitable for direct substitution in circuit designs. Selection between these parts should be based on procurement and manufacturing requirements rather than technical performance considerations.

Packaging Format Considerations:

Choose BSP19-QX (Tape & Reel format) for high-volume automated assembly operations requiring continuous reel feeding into pick-and-place equipment. Select BSP19,115 (Cut Tape and Digi-Reel® format) for lower-volume production runs, manual assembly processes, or when component-level flexibility in handling and storage is required.

Compliance and Qualification Status:

Both parts maintain identical Active product status and carry full AEC-Q101 automotive qualification with ROHS3 compliance and REACH Unaffected designation. Either part satisfies automotive-grade circuit requirements without additional qualification or testing.

Inventory and Supply Chain:

BSP19,115 currently maintains higher inventory availability (2200 pieces) compared to BSP19-QX (1170 pieces), making it suitable for applications where supply continuity is a priority. Both parts are sourced from the same manufacturer (Nexperia USA Inc.), ensuring consistent quality and performance.

Thermal and Electrical Performance:

No performance differentiation exists between these parts. Both deliver identical electrical characteristics across all operating conditions, thermal performance, and frequency response. Circuit design parameters established for BSP19-QX apply directly to BSP19,115 without modification.

Frequently Asked Questions (FAQ)

Q: Can BSP19,115 be used as a direct replacement for BSP19-QX in existing circuit designs?

A: Yes. BSP19,115 is a parametric equivalent with identical electrical specifications, thermal characteristics, and package dimensions. No circuit modifications or design changes are required for substitution.

Q: What is the difference between Tape & Reel and Cut Tape packaging formats?

A: Tape & Reel (TR) format supplies components on continuous reels suitable for automated high-speed assembly lines. Cut Tape (CT) and Digi-Reel® format supplies components in shorter tape segments or alternative reel configurations, better suited for lower-volume production, manual assembly, or component-level inventory management.

Q: Are both parts qualified for automotive applications?

A: Yes. Both BSP19-QX and BSP19,115 carry Automotive grade classification and AEC-Q101 qualification, confirming suitability for automotive circuit applications. Both maintain ROHS3 compliance and REACH Unaffected status.

Q: Will PCB layout or footprint require modification when switching from BSP19-QX to BSP19,115?

A: No. Both parts use identical SOT-223 surface mount packages with TO-261-4 and TO-261AA case designations. PCB footprints, land patterns, and assembly processes remain unchanged.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by equivalence in collector current (100 mA maximum), collector-emitter breakdown voltage (350 V), saturation voltage (500 mV at specified bias), DC current gain (40 minimum at 20 mA, 10 V), power dissipation (1.2 W), and transition frequency (70 MHz). Both parts match across all these parameters.

Q: Is there any performance difference in switching speed or frequency response?

A: No. Both parts specify identical transition frequency of 70 MHz and saturation characteristics. Switching performance and frequency response are equivalent across all operating conditions.

Q: Can inventory from both packaging formats be mixed in production?

A: Yes, provided assembly equipment is configured to handle both Tape & Reel and Cut Tape formats. Since electrical and mechanical specifications are identical, mixed inventory does not affect circuit performance or reliability.

Q: What is the moisture sensitivity level for both parts?

A: Both parts carry Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture-related storage or handling restrictions. Standard component storage conditions apply.