BC847CW/MIF Equivalent & Substitute Parts

Part Overview

The BC847CW/MIF is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for general-purpose switching and amplification applications. This device features a 45 V collector-emitter breakdown voltage, 100 mA maximum collector current, and 100 MHz transition frequency in a surface mount SOT-323 package. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical and mechanical compatibility while meeting current availability and qualification standards.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector-Emitter Breakdown Voltage (Max)	45	V
Collector Current (Max)	100	mA
Vce Saturation (Max) @ Ib, Ic	400 mV @ 5 mA, 100 mA	—
Collector Cutoff Current (Max)	15	nA
DC Current Gain (hFE Min) @ Ic, Vce	420 @ 2 mA, 5 V	—
Power Dissipation (Max)	200	mW
Transition Frequency	100	MHz
Operating Temperature (Max)	150	°C
Package / Case	SC-70, SOT-323	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BC847CW/MIF is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Transistor type (NPN)
Collector-emitter breakdown voltage (45 V minimum)
Maximum collector current (100 mA minimum)
DC current gain (hFE) specification at defined bias points
Vce saturation voltage characteristics
Transition frequency (100 MHz minimum)
Power dissipation capability (200 mW minimum)

Mechanical & Package Equivalence Criteria:

Surface mount package type (SOT-323 / SC-70)
Pin configuration compatibility
Moisture sensitivity level (MSL 1)

Compliance & Qualification Criteria:

RoHS3 compliance
Automotive grade classification
AEC-Q101 qualification (where applicable)

Substitute parts are grouped into two categories:

Direct Parametric Equivalents: Parts meeting all electrical specifications with identical Vce saturation (400 mV @ 5 mA, 100 mA) and DC current gain (420 @ 2 mA, 5 V). These include BC847CW,115, BC847CW,135, BC847CW-QF, BC847CW-QX, and BC847CW/DG/B4X.

Parametric Equivalents with Tolerance Variations: Parts meeting core electrical specifications but with different Vce saturation (600 mV @ 5 mA, 100 mA) or alternative manufacturer implementations. These include BC850CW,115, BC850CW,135, BC850BWH6327XTSA1, SBC847AWT1G, and SBC847CWT1G.

Parameter Comparison

Part Number	Manufacturer	Vce Sat (Max) @ 5mA, 100mA	hFE (Min) @ 2mA, 5V	Power (Max)	Frequency	Product Status	Grade	Packaging
BC847CW/MIF	Nexperia USA Inc.	400 mV	420	200 mW	100 MHz	Obsolete	Automotive	Cut Tape (CT)
BC847CW,115	Nexperia USA Inc.	400 mV	420	200 mW	100 MHz	Active	—	Cut Tape (CT) & Digi-Reel®
BC847CW,135	Nexperia USA Inc.	400 mV	420	200 mW	100 MHz	Active	—	Tape & Reel (TR)
BC847CW-QF	Nexperia USA Inc.	400 mV	420	200 mW	100 MHz	Active	Automotive	Tape & Reel (TR)
BC847CW-QX	Nexperia USA Inc.	400 mV	420	200 mW	100 MHz	Active	Automotive	Tape & Reel (TR)
BC847CW/DG/B4X	Nexperia USA Inc.	400 mV	420	200 mW	100 MHz	Active	Automotive	—
BC850CW,115	Nexperia USA Inc.	600 mV	420	200 mW	100 MHz	Active	Automotive	Cut Tape (CT) & Digi-Reel®
BC850CW,135	Nexperia USA Inc.	600 mV	420	200 mW	100 MHz	Active	Automotive	Tape & Reel (TR)
BC850BWH6327XTSA1	Infineon Technologies	600 mV	200	250 mW	250 MHz	Last Time Buy	—	Tape & Reel (TR)
SBC847AWT1G	onsemi	600 mV	110	150 mW	100 MHz	Active	Automotive	Tape & Reel (TR)
SBC847CWT1G	onsemi	600 mV	420	150 mW	100 MHz	Active	Automotive	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Substitutes (Direct Electrical Equivalents):

BC847CW,115 and BC847CW,135 are the preferred direct substitutes for BC847CW/MIF. Both parts are manufactured by Nexperia USA Inc. and maintain identical electrical specifications including 400 mV Vce saturation and 420 hFE minimum. BC847CW,115 is available in Cut Tape & Digi-Reel® packaging, while BC847CW,135 is supplied in Tape & Reel format. Both are active products with full RoHS3 compliance and MSL 1 rating.

BC847CW-QF and BC847CW-QX are automotive-qualified alternatives (AEC-Q101) with identical electrical performance. These parts are recommended for applications requiring automotive-grade certification. Both maintain the 400 mV Vce saturation specification and are supplied in Tape & Reel packaging.

BC847CW/DG/B4X is an automotive-qualified variant with identical electrical specifications and active product status, suitable for automotive applications requiring AEC-Q101 qualification.

Secondary Substitutes (Parametric Equivalents with Tolerance Variations):

BC850CW,115 and BC850CW,135 are parametric equivalents with higher Vce saturation (600 mV @ 5 mA, 100 mA). These parts maintain identical collector current, breakdown voltage, DC current gain, and transition frequency. Both are automotive-qualified and active products. Selection of these parts is appropriate where the higher saturation voltage does not impact circuit performance.

Alternative Manufacturer Options:

SBC847CWT1G (onsemi) is an automotive-qualified alternative with identical DC current gain (420 @ 2 mA, 5 V) and transition frequency (100 MHz). This part features 600 mV Vce saturation and 150 mW power dissipation. It is suitable for applications where alternative manufacturer sourcing is required while maintaining automotive qualification.

SBC847AWT1G (onsemi) is an automotive-qualified option with lower DC current gain (110 @ 2 mA, 5 V) and reduced power dissipation (150 mW). This part is not recommended as a direct substitute due to significantly lower hFE specification.

BC850BWH6327XTSA1 (Infineon Technologies) is classified as Last Time Buy and features enhanced specifications (250 MHz transition frequency, 250 mW power dissipation) but lower DC current gain (200 @ 2 mA, 5 V). This part is not recommended for new designs due to end-of-life status.

Frequently Asked Questions (FAQ)

Q: Can BC847CW,115 directly replace BC847CW/MIF in existing designs?

A: Yes. BC847CW,115 is a direct electrical equivalent with identical Vce saturation (400 mV), DC current gain (420), and all other critical specifications. The primary difference is packaging format (Cut Tape & Digi-Reel® versus the original format). Pin configuration and SOT-323 package dimensions are identical.

Q: What is the difference between BC847CW,135 and BC847CW,115?

A: Both parts are electrically identical. The difference is packaging: BC847CW,135 is supplied in Tape & Reel (TR) format, while BC847CW,115 is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on assembly process requirements and volume.

Q: Why do BC850CW variants have higher Vce saturation (600 mV) than BC847CW variants (400 mV)?

A: BC850 and BC847 are distinct product lines within the Nexperia portfolio with different internal designs. The 600 mV saturation specification of BC850 variants represents a different design trade-off. Substitution is valid only if circuit design tolerates this higher saturation voltage.

Q: Are BC847CW-QF and BC847CW-QX suitable for automotive applications?

A: Yes. Both parts carry automotive grade classification and AEC-Q101 qualification. They are recommended for automotive applications requiring certified components.

Q: What is the significance of the "Q" designation in BC847CW-QF and BC847CW-QX?

A: The "Q" designation indicates automotive qualification and AEC-Q101 compliance. These parts are qualified for automotive use and meet automotive reliability standards.

Q: Can SBC847CWT1G (onsemi) replace BC847CW/MIF?

A: SBC847CWT1G is a parametric equivalent with identical DC current gain (420) and transition frequency (100 MHz). However, it features 600 mV Vce saturation (versus 400 mV) and 150 mW power dissipation (versus 200 mW). Substitution is valid only if circuit design accommodates these specification differences. The part is automotive-qualified and active.

Q: Is BC847CW/MIF still available for purchase?

A: BC847CW/MIF is classified as obsolete. Active equivalent parts such as BC847CW,115, BC847CW,135, BC847CW-QF, and BC847CW-QX should be used for new designs and ongoing production.

Q: What packaging options are available for BC847CW equivalents?

A: BC847CW equivalents are available in Cut Tape (CT) & Digi-Reel® format (BC847CW,115) and Tape & Reel (TR) format (BC847CW,135, BC847CW-QF, BC847CW-QX). All variants use SOT-323 / SC-70 surface mount package with identical pin configuration.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original BC847CW/MIF specifications.

Q: What is the operating temperature range for BC847CW substitutes?

A: Nexperia BC847CW variants are rated to 150°C maximum junction temperature. onsemi SBC847 variants are rated -55°C to 150°C junction temperature. Infineon BC850BWH6327XTSA1 is rated to 150°C maximum junction temperature.

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