BC846AQBZ Equivalent & Substitute Parts

Part Overview

The BC846AQBZ is a small signal NPN bipolar junction transistor manufactured by Nexperia USA Inc. in a 3-XDFN surface mount package with wettable flank. This device is classified as an active product and serves general-purpose switching and amplification applications in consumer and industrial electronics. The BC846AQBZ is specified for operation at collector currents up to 100 mA, collector-emitter breakdown voltage of 65 V, and transition frequency of 100 MHz. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) (Max)	100	mA
Voltage - Collector Emitter Breakdown (Max)	65	V
Vce Saturation (Max) @ Ib, Ic	400 mV @ 5 mA, 100 mA	—
Current - Collector Cutoff (Max)	15	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	110 @ 2 mA, 5 V	—
Power - Max	340	mW
Frequency - Transition	100	MHz
Operating Temperature (TJ)	150	°C
Package / Case	3-XDFN Exposed Pad	—
Supplier Device Package	DFN1110D-3	—
Mounting Type	Surface Mount, Wettable Flank	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BC846AQBZ are identified based on electrical parameter equivalence and mechanical compatibility. The substitution criteria are:

Electrical Parameters (Must Match):

Transistor Type: NPN
Current - Collector (Ic) (Max): 100 mA
Voltage - Collector Emitter Breakdown (Max): 65 V
Vce Saturation (Max) @ Ib, Ic: 400 mV @ 5 mA, 100 mA
Current - Collector Cutoff (Max): 15 nA
DC Current Gain (hFE) (Min) @ Ic, Vce: 110 @ 2 mA, 5 V
Power - Max: 340 mW
Frequency - Transition: 100 MHz
Operating Temperature (TJ): 150 °C

Mechanical Parameters (Must Match):

Package / Case: 3-XDFN Exposed Pad
Supplier Device Package: DFN1110D-3
Mounting Type: Surface Mount, Wettable Flank

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts meeting all electrical, mechanical, and compliance criteria are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Parameter	BC846AQBZ	BC846AQB-QZ
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.
Category	Transistors, Bipolar (BJT)	Transistors, Bipolar (BJT)
Transistor Type	NPN	NPN
Current - Collector (Ic) (Max)	100 mA	100 mA
Voltage - Collector Emitter Breakdown (Max)	65 V	65 V
Vce Saturation (Max) @ Ib, Ic	400 mV @ 5 mA, 100 mA	400 mV @ 5 mA, 100 mA
Current - Collector Cutoff (Max)	15 nA	15 nA
DC Current Gain (hFE) (Min) @ Ic, Vce	110 @ 2 mA, 5 V	110 @ 2 mA, 5 V
Power - Max	340 mW	340 mW
Frequency - Transition	100 MHz	100 MHz
Operating Temperature (TJ)	150 °C	150 °C
Package / Case	3-XDFN Exposed Pad	3-XDFN Exposed Pad
Supplier Device Package	DFN1110D-3	DFN1110D-3
Mounting Type	Surface Mount, Wettable Flank	Surface Mount, Wettable Flank
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

Both BC846AQBZ and BC846AQB-QZ are active products manufactured by Nexperia USA Inc. and meet identical electrical and mechanical specifications. Both devices are ROHS3 compliant and carry MSL 1 rating, indicating unlimited shelf life under standard storage conditions.

The BC846AQB-QZ carries AEC-Q101 automotive qualification, which indicates suitability for automotive applications requiring enhanced reliability and traceability. Selection between these two parts depends on application requirements: the BC846AQBZ is suitable for general-purpose consumer and industrial applications, while the BC846AQB-QZ is specified for automotive-grade applications.

Both parts are interchangeable at the electrical and mechanical level. PCB layout, footprint, and reflow profile compatibility are identical due to matching package specifications (DFN1110D-3 with wettable flank).

Frequently Asked Questions (FAQ)

Q: Can BC846AQB-QZ replace BC846AQBZ in a design?

A: Yes. Both parts are parametric equivalents with identical electrical characteristics, package specifications, and compliance ratings. Direct substitution is supported at the component level.

Q: What is the difference between BC846AQBZ and BC846AQB-QZ?

A: The BC846AQB-QZ carries AEC-Q101 automotive qualification, indicating compliance with automotive reliability and traceability standards. The BC846AQBZ does not carry this qualification. All other electrical and mechanical parameters are identical.

Q: Are these parts pin-compatible?

A: Yes. Both parts use the 3-XDFN Exposed Pad package (DFN1110D-3) with identical pinout and footprint. PCB layout modifications are not required for substitution.

Q: What does MSL 1 (Unlimited) mean?

A: MSL 1 indicates Moisture Sensitivity Level 1, which means the component has unlimited shelf life under standard storage conditions (23 °C, 50% relative humidity). No special moisture control measures are required during storage or handling.

Q: Are both parts ROHS3 compliant?

A: Yes. Both BC846AQBZ and BC846AQB-QZ are ROHS3 compliant, meeting restrictions on hazardous substances in electrical and electronic equipment.

Q: Can I use BC846AQB-QZ in a non-automotive application?

A: Yes. The BC846AQB-QZ meets all specifications required for general-purpose applications. Automotive qualification is an additional certification that does not restrict use in non-automotive designs.

Q: What is the maximum operating temperature for these transistors?

A: The maximum junction temperature (TJ) is 150 °C for both parts. This is the maximum temperature at which the transistor can operate while maintaining specified electrical characteristics.

Q: Are there any differences in packaging or handling between these parts?

A: No. Both parts are supplied in Tape & Reel (TR) packaging with identical DFN1110D-3 package specifications, wettable flank design, and surface mount mounting type. Handling, storage, and reflow procedures are identical.

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