BC847-QR Equivalent & Substitute Parts

Part Overview

The BC847-QR is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for small-signal switching and amplification applications. This surface mount device operates at a maximum collector current of 100 mA with a collector-emitter breakdown voltage of 45 V and a maximum power dissipation of 250 mW. The part is qualified to AEC-Q101 automotive standards and carries Active product status. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and packaging format requirements across manufacturing environments.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	45	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	250	mW
Frequency - Transition	100	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BC847-QR are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: collector current (100 mA), collector-emitter breakdown voltage (45 V), saturation voltage (400 mV @ 5 mA, 100 mA), collector cutoff current (15 nA), DC current gain (110 @ 2 mA, 5 V), power dissipation (250 mW), transition frequency (100 MHz), and operating temperature (150°C). These parts differ only in packaging format (Tape & Reel, Cut Tape, or Bulk) and manufacturer designation. Parametric equivalents include BC847,215; BC847,235; BC847A,215; and BC847A,235.

Similar Parts share the same transistor type, collector current, breakdown voltage, and transition frequency but exhibit measurable differences in saturation voltage (500 mV @ 5 mA, 100 mA), collector cutoff current (100 nA), power dissipation (200 mW), and operating temperature range (-55°C to 150°C). DC current gain varies by part variant: BC847A RFG (110), BC847B RFG (200), and BC847C RFG (420). These parts are manufactured by Taiwan Semiconductor Corporation and supplied in SOT-23 package format. Similar parts are suitable for applications where the specified parameter variations do not impact circuit performance.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Ic (Max) mA	Vce Breakdown (Max) V	Vce Sat (Max) mV	Icbo (Max) nA	hFE (Min)	Power (Max) mW	Freq MHz	Temp °C	Package	Packaging Format	Qualification
BC847-QR	Nexperia USA Inc.	100	45	400	15	110	250	100	150	TO-236AB	Tape & Reel	AEC-Q101
BC847,215	Nexperia USA Inc.	100	45	400	15	110	250	100	150	TO-236AB	Cut Tape & Digi-Reel	AEC-Q101
BC847,235	NXP Semiconductors	100	45	400	15	110	250	100	150	TO-236AB	Bulk	AEC-Q101
BC847A,215	Nexperia USA Inc.	100	45	400	15	110	250	100	150	TO-236AB	Tape & Reel	AEC-Q101
BC847A,235	NXP USA Inc.	100	45	400	15	110	250	100	150	SOT-23	Bulk	AEC-Q101
BC847A RFG	Taiwan Semiconductor Corporation	100	45	500	100	110	200	100	-55 to 150	SOT-23	Tape & Reel	Not Specified
BC847B RFG	Taiwan Semiconductor Corporation	100	45	500	100	200	200	100	-55 to 150	SOT-23	Tape & Reel	Not Specified
BC847C RFG	Taiwan Semiconductor Corporation	100	45	500	100	420	200	100	-55 to 150	SOT-23	Tape & Reel	Not Specified

Engineering Selection Recommendations

For Direct Substitution (Parametric Equivalents):

BC847,215, BC847,235, BC847A,215, and BC847A,235 are parametric equivalents to the BC847-QR. These parts maintain identical electrical performance across all critical specifications and carry AEC-Q101 automotive qualification. Selection among these equivalents is determined by packaging format requirements: Tape & Reel format for automated assembly lines, Cut Tape & Digi-Reel for mixed-volume production, or Bulk for manual assembly operations. All parametric equivalents are manufactured by Nexperia USA Inc. or NXP Semiconductors and comply with ROHS3 and REACH requirements.

For Similar Performance (Taiwan Semiconductor Corporation Variants):

BC847A RFG, BC847B RFG, and BC847C RFG are similar parts suitable for applications where parameter variations do not compromise circuit function. These parts exhibit higher saturation voltage (500 mV versus 400 mV), higher collector cutoff current (100 nA versus 15 nA), and reduced power dissipation (200 mW versus 250 mW). DC current gain differs by variant: BC847A RFG matches the BC847-QR specification (110), while BC847B RFG (200) and BC847C RFG (420) provide higher gain options. These parts support extended operating temperature range (-55°C to 150°C) and are supplied in SOT-23 package format. Selection of these variants is appropriate when the specified parameter differences align with circuit design margins and when SOT-23 package compatibility is confirmed.

Compliance Considerations:

All Nexperia and NXP parts maintain AEC-Q101 automotive qualification and ROHS3 compliance. Taiwan Semiconductor Corporation variants do not specify AEC-Q101 qualification; use of these parts in automotive applications requires design review and qualification assessment. All parts carry MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can BC847,215 replace BC847-QR in a production assembly line?

A: Yes. BC847,215 is a parametric equivalent with identical electrical specifications. The primary difference is packaging format: BC847,215 is supplied in Cut Tape & Digi-Reel format, while BC847-QR is supplied in Tape & Reel format. Confirm that your assembly equipment supports the Cut Tape & Digi-Reel format before implementation.

Q: What is the difference between BC847A,235 and BC847-QR?

A: BC847A,235 is a parametric equivalent with identical electrical specifications and AEC-Q101 qualification. The differences are: (1) Manufacturer designation (NXP USA Inc. versus Nexperia USA Inc.), (2) Packaging format (Bulk versus Tape & Reel), and (3) Supplier device package designation (SOT-23 versus TO-236AB). Electrical performance is equivalent.

Q: Are the Taiwan Semiconductor Corporation BC847 variants suitable for automotive applications?

A: BC847A RFG, BC847B RFG, and BC847C RFG do not carry AEC-Q101 automotive qualification. These parts are classified as similar parts with measurable parameter differences. Use in automotive applications requires design review, qualification testing, and documented engineering approval. These parts are suitable for industrial and consumer applications where the parameter variations (higher saturation voltage, higher cutoff current, lower power dissipation) do not impact circuit performance.

Q: What are the key parameter differences between BC847-QR and BC847B RFG?

A: BC847B RFG differs in four parameters: (1) Vce saturation is 500 mV versus 400 mV, (2) Collector cutoff current is 100 nA versus 15 nA, (3) Power dissipation is 200 mW versus 250 mW, and (4) DC current gain is 200 versus 110. Operating temperature range is extended (-55°C to 150°C). These differences are suitable for applications where higher gain and lower power dissipation are beneficial and where the higher saturation voltage does not violate circuit design margins.

Q: Can I use BC847A,235 in place of BC847-QR without circuit modification?

A: Yes. BC847A,235 is a parametric equivalent with identical electrical specifications, AEC-Q101 qualification, and ROHS3 compliance. No circuit modification is required. The only consideration is packaging format: BC847A,235 is supplied in Bulk format, which may require different handling procedures compared to Tape & Reel format.

Q: What is the difference between TO-236AB and SOT-23 packages?

A: Both TO-236AB and SOT-23 are equivalent package designations for the same physical form factor (3-lead surface mount package). The terms are interchangeable. BC847-QR specifies TO-236AB; BC847A,235 and Taiwan Semiconductor Corporation variants specify SOT-23. Physical compatibility is confirmed; component placement and soldering procedures are identical.

Q: Which substitute part has the highest DC current gain?

A: BC847C RFG has the highest DC current gain at 420 (minimum) compared to 110 for BC847-QR. BC847B RFG provides intermediate gain at 200. Higher gain reduces base current requirements and may improve circuit efficiency in current-limited applications.

Q: Are all substitute parts RoHS3 compliant?

A: All Nexperia USA Inc., NXP Semiconductors, and NXP USA Inc. parts are ROHS3 compliant. Taiwan Semiconductor Corporation variants (BC847A RFG, BC847B RFG, BC847C RFG) are also ROHS3 compliant. All parts carry MSL 1 (Unlimited) moisture sensitivity rating.

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