BSP52-QX Equivalent & Substitute Parts

Part Overview

The BSP52-QX is an NPN Darlington bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in the SOT-223 package. This component operates at a maximum collector current of 1 A, collector-emitter breakdown voltage of 80 V, and maximum power dissipation of 1.25 W. The device is qualified to AEC-Q101 automotive standards and maintains active product status. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when packaging formats differ while maintaining identical electrical performance.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN - Darlington	—
Current - Collector (Ic) (Max)	1	A
Voltage - Collector Emitter Breakdown (Max)	80	V
Vce Saturation (Max) @ Ib, Ic	1.3V @ 500µA, 500mA	V
Current - Collector Cutoff (Max)	50	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	2000 @ 500mA, 10V	—
Power - Max	1.25	W
Frequency - Transition	200	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-261-4, TO-261AA	—
Supplier Device Package	SOT-223	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the BSP52-QX with the BSP52,115 is based on electrical and mechanical parameter equivalence. Both parts are NPN Darlington transistors manufactured by Nexperia USA Inc. with identical electrical specifications: maximum collector current of 1 A, collector-emitter breakdown voltage of 80 V, saturation voltage of 1.3 V at specified bias conditions, DC current gain minimum of 2000, maximum power dissipation of 1.25 W, and transition frequency of 200 MHz. Both components utilize the SOT-223 surface mount package and are qualified to AEC-Q101 automotive standards with ROHS3 compliance.

The primary distinction between these parts is packaging format. The BSP52-QX is supplied in Tape & Reel (TR) format, while the BSP52,115 is available in Cut Tape (CT) and Digi-Reel® formats. This difference affects procurement and assembly processes but does not alter electrical performance or functional compatibility in circuit applications.

Parameter Comparison

Parameter	BSP52-QX	BSP52,115	Match Status
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Identical
Transistor Type	NPN - Darlington	NPN - Darlington	Identical
Current - Collector (Ic) (Max)	1 A	1 A	Identical
Voltage - Collector Emitter Breakdown (Max)	80 V	80 V	Identical
Vce Saturation (Max) @ Ib, Ic	1.3V @ 500µA, 500mA	1.3V @ 500µA, 500mA	Identical
Current - Collector Cutoff (Max)	50 nA	50 nA	Identical
DC Current Gain (hFE) (Min) @ Ic, Vce	2000 @ 500mA, 10V	2000 @ 500mA, 10V	Identical
Power - Max	1.25 W	1.25 W	Identical
Frequency - Transition	200 MHz	200 MHz	Identical
Operating Temperature (TJ)	150°C	150°C	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Package / Case	TO-261-4, TO-261AA	TO-261-4, TO-261AA	Identical
Supplier Device Package	SOT-223	SOT-223	Identical
Grade	Automotive	Automotive	Identical
Qualification	AEC-Q101	AEC-Q101	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Packaging Format	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Different

Engineering Selection Recommendations

Both the BSP52-QX and BSP52,115 are active products from Nexperia USA Inc. with full AEC-Q101 automotive qualification and ROHS3 compliance. Selection between these parts should be based on procurement and assembly requirements rather than electrical performance, as all specified parameters are identical.

The BSP52-QX in Tape & Reel format is suitable for high-volume automated assembly operations where continuous reel feeding is required. The BSP52,115 in Cut Tape and Digi-Reel® formats provides flexibility for lower-volume applications, manual assembly processes, or situations where partial reel quantities are needed.

Both parts maintain the same electrical characteristics, thermal performance, and reliability standards. Circuit design, PCB layout, and thermal management considerations remain unchanged regardless of which part number is selected.

Frequently Asked Questions (FAQ)

Q: Can BSP52,115 be used as a direct replacement for BSP52-QX in production?

A: Yes. Both parts are electrically and mechanically identical. The only difference is the packaging format (Tape & Reel versus Cut Tape/Digi-Reel®). Direct substitution is valid for circuit applications without design modifications.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts have identical maximum power dissipation (1.25 W), operating temperature range (150°C TJ), and all electrical specifications. Thermal management and circuit performance are equivalent.

Q: What is the significance of the different packaging formats?

A: Packaging format affects procurement logistics and assembly processes. Tape & Reel (TR) format is optimized for continuous automated pick-and-place assembly. Cut Tape (CT) and Digi-Reel® formats provide flexibility for lower-volume production, manual assembly, or partial quantity requirements. The actual component performance is unaffected.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both BSP52-QX and BSP52,115 are qualified to AEC-Q101 automotive standards and are suitable for automotive applications.

Q: Is there a difference in moisture sensitivity or storage requirements?

A: The BSP52,115 specifies Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions. Both parts are ROHS3 compliant and REACH unaffected, with identical environmental compliance.

Q: Can these parts be used interchangeably in the same PCB design?

A: Yes. Both parts use the SOT-223 surface mount package with identical pin configuration (TO-261-4, TO-261AA). PCB footprints, solder reflow profiles, and assembly procedures remain unchanged.

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