BC847,235 Equivalent & Substitute Parts

Part Overview

The BC847,235 is an NPN bipolar junction transistor manufactured by Nexperia USA Inc. in the TO-236AB surface mount package. This small-signal transistor operates at 45 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and 250 mW power dissipation. The device 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 options while maintaining electrical and mechanical compatibility within specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	45	V
Current - Collector (Ic) (Max)	100	mA
Power - Max	250	mW
Frequency - Transition	100	MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	110 @ 2mA, 5V	—
Operating Temperature (Max)	150	°C
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the BC847,235 are classified into three categories based on electrical and mechanical compatibility:

Direct Manufacturer Substitutes share identical electrical specifications, package type, and supplier device package designation. These parts are interchangeable without circuit modification.

Parametric Equivalents maintain all critical electrical parameters (Ic Max, Vce breakdown, hFE, frequency, power rating, and operating temperature) but may differ in packaging format (Tape & Reel versus Cut Tape) or supplier device package designation. These parts function identically in circuit applications.

Similar Parts meet the core electrical requirements (NPN type, 45 V Vce breakdown, 100 mA Ic capability, 100 MHz transition frequency) but may exhibit variations in secondary parameters such as Vce saturation, collector cutoff current, or power dissipation. These parts are suitable for applications where the primary electrical characteristics are the determining factors.

Substitution eligibility is determined by the following key parameters:

Transistor Type (NPN)
Voltage - Collector Emitter Breakdown (45 V minimum)
Current - Collector (100 mA minimum)
DC Current Gain (hFE) (110 minimum @ 2mA, 5V)
Frequency - Transition (100 MHz minimum)
Operating Temperature (150°C maximum)
Surface Mount package compatibility (TO-236-3, SC-59, SOT-23-3)
Automotive Grade and AEC-Q101 qualification (where applicable)

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce Breakdown (Max) V	hFE (Min) @ Ic, Vce	Power (Max) mW	Frequency (Transition) MHz	Package	Packaging Type	AEC-Q101
BC847,235	Nexperia USA Inc.	100	45	110 @ 2mA, 5V	250	100	TO-236AB	Tape & Reel	Yes
BCW71,215	Nexperia USA Inc.	100	45	110 @ 2mA, 5V	250	100	TO-236AB	Tape & Reel	Yes
BC847,215	Nexperia USA Inc.	100	45	110 @ 2mA, 5V	250	100	TO-236AB	Cut Tape & Digi-Reel	Yes
BC847A,215	Nexperia USA Inc.	100	45	110 @ 2mA, 5V	250	100	TO-236AB	Tape & Reel	Yes
BC847A,235	NXP USA Inc.	100	45	110 @ 2mA, 5V	250	100	SOT-23	Bulk	Yes
BC847A-7-F	Diodes Incorporated	100	45	110 @ 2mA, 5V	300	300	SOT-23-3	Tape & Reel	No
BC847A-TP	Micro Commercial Co	100	45	110 @ 2mA, 5V	225	100	SOT-23	Tape & Reel	No
BC847ALT1G	onsemi	100	45	110 @ 2mA, 5V	300	100	SOT-23-3	Cut Tape & Digi-Reel	No
BC817-16LT1G	onsemi	500	45	100 @ 100mA, 1V	300	100	SOT-23-3	Cut Tape & Digi-Reel	No
BC817-16LT3G	onsemi	500	45	100 @ 100mA, 1V	300	100	SOT-23-3	Tape & Reel	No
BC817-25-7-F	Diodes Incorporated	500	45	160 @ 100mA, 1V	310	100	SOT-23-3	Cut Tape & Digi-Reel	Yes

Engineering Selection Recommendations

For Direct Substitution (Automotive AEC-Q101 Applications):

The BCW71,215 and BC847,215 are direct parametric equivalents to the BC847,235. Both maintain identical electrical specifications and automotive qualification. Selection between these parts depends on packaging format availability: BCW71,215 and BC847,235 are supplied in Tape & Reel format, while BC847,215 is available in Cut Tape & Digi-Reel format. The BC847A,215 and BC847A,235 variants are also qualified equivalents with identical performance characteristics.

For Non-Automotive Applications with Enhanced Performance:

The BC847A-7-F (Diodes Incorporated) and BC847ALT1G (onsemi) provide increased power dissipation (300 mW versus 250 mW) and the BC847A-7-F offers higher transition frequency (300 MHz versus 100 MHz). These parts are suitable for applications where automotive qualification is not required and enhanced thermal or frequency performance is beneficial.

For Higher Current Applications:

The BC817 series (BC817-16LT1G, BC817-16LT3G, BC817-25-7-F) supports 500 mA collector current, five times the BC847,235 rating. The BC817-25-7-F carries AEC-Q101 automotive qualification and is appropriate for applications requiring higher current handling while maintaining automotive compliance.

Compliance Considerations:

All listed parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited). Parts carrying AEC-Q101 qualification (BCW71,215, BC847,215, BC847A,215, BC847A,235, BC817-25-7-F) are suitable for automotive applications. Non-qualified parts (BC847A-7-F, BC847A-TP, BC847ALT1G, BC817-16LT1G, BC817-16LT3G) are restricted to non-automotive consumer and industrial applications.

Frequently Asked Questions (FAQ)

Q: Can BC847A,235 replace BC847,235 in automotive applications?

A: Yes. The BC847A,235 maintains identical electrical specifications, automotive grade designation, and AEC-Q101 qualification. The primary difference is packaging format (Bulk versus Tape & Reel), which does not affect circuit performance.

Q: What is the difference between BC847,215 and BC847,235?

A: Both parts are manufactured by Nexperia USA Inc. with identical electrical characteristics and automotive qualification. The difference is packaging format: BC847,215 is supplied in Cut Tape & Digi-Reel format, while BC847,235 is supplied in Tape & Reel format. Electrical performance is identical.

Q: Can I use BC847A-7-F (Diodes Incorporated) in an automotive application?

A: No. The BC847A-7-F does not carry AEC-Q101 automotive qualification. It is suitable only for non-automotive consumer and industrial applications. For automotive applications, use AEC-Q101 qualified parts such as BC847,235, BCW71,215, BC847,215, BC847A,215, BC847A,235, or BC817-25-7-F.

Q: What is the advantage of BC847A-7-F over BC847,235?

A: The BC847A-7-F offers higher transition frequency (300 MHz versus 100 MHz) and increased power dissipation (300 mW versus 250 mW). These enhancements are beneficial in high-frequency or thermally demanding applications where automotive qualification is not required.

Q: Can BC817-16LT1G replace BC847,235?

A: BC817-16LT1G is a similar part suitable for applications requiring higher collector current (500 mA versus 100 mA). It maintains the same 45 V Vce breakdown and 100 MHz transition frequency. However, it does not carry AEC-Q101 automotive qualification and is not suitable for automotive applications. Use BC817-25-7-F for automotive applications requiring higher current.

Q: Are all substitute parts available in the same package?

A: No. While all parts use surface mount technology in the TO-236-3, SC-59, SOT-23-3 family, the supplier device package designation varies. BC847,235 uses TO-236AB, while other parts use SOT-23 or SOT-23-3 designations. These are mechanically and electrically compatible within the same package family but may have minor footprint variations. Verify PCB layout compatibility before substitution.

Q: What does AEC-Q101 qualification mean?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. It certifies that the component meets stringent reliability, quality, and performance requirements for automotive applications. Only parts explicitly marked with AEC-Q101 qualification should be used in automotive designs.

Q: Can I substitute BC847,235 with BC847A-TP?

A: BC847A-TP is a parametric equivalent with identical electrical specifications but lower power dissipation (225 mW versus 250 mW). It is suitable for applications where the lower power rating is acceptable and automotive qualification is not required. For automotive applications, use AEC-Q101 qualified alternatives.

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