BC846AW-TP Equivalent & Substitute Parts

Part Overview

The BC846AW-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. This surface mount device operates at 65 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and transition frequency of 100 MHz. The part is classified as Active product status with REACH Unaffected compliance. Substitute parts are identified to address inventory availability, packaging format requirements, or specific performance characteristics within the BC846 series.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector Current (Max)	100	mA
Collector-Emitter Breakdown Voltage (Max)	65	V
Transition Frequency	100	MHz
Power Dissipation (Max)	150	mW
Package Type	SOT-323 (SC-70)	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-65 to 150	°C

Substitute Part Grouping Explanation

Substitution within the BC846 series is determined by electrical parameter compatibility across the following criteria:

Critical Parameters (Must Match):

Transistor Type: NPN
Collector Current (Max): 100 mA
Collector-Emitter Breakdown Voltage (Max): 65 V
Transition Frequency: 100 MHz
Package / Case: SOT-323 (SC-70)
Mounting Type: Surface Mount

Variable Parameters (Allowed Differences):

DC Current Gain (hFE): Ranges from 110 to 420 @ 2 mA, 5 V across the BC846 series variants
Power Dissipation (Max): 150 mW (main part) to 200 mW (substitute parts)
Vce Saturation: 400 mV to 600 mV @ 5 mA, 100 mA
Current Collector Cutoff (ICBO): 15 nA to 100 nA
Operating Temperature Range: -65°C to -55°C lower bound; 150°C upper bound consistent
Packaging Format: Bulk, Tape & Reel (TR), or Cut Tape (CT) & Digi-Reel®

All identified substitute parts maintain electrical compatibility with the BC846AW-TP within the SOT-323 package footprint and functional specifications.

Parameter Comparison

Parameter	BC846AW-TP (Main)	BC846AW RFG	BC846BW RFG	BC846BW,135	BC846CW RFG
Manufacturer	Micro Commercial Co	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Nexperia USA Inc.	Taiwan Semiconductor Corporation
Transistor Type	NPN	NPN	NPN	NPN	NPN
Ic (Max)	100 mA	100 mA	100 mA	100 mA	100 mA
Vce Breakdown (Max)	65 V	65 V	65 V	65 V	65 V
Vce Saturation @ 5mA, 100mA	600 mV	600 mV	600 mV	400 mV	600 mV
ICBO (Max)	15 nA	100 nA	100 nA	15 nA	100 nA
hFE (Min) @ 2mA, 5V	110	110	200	200	420
Power (Max)	150 mW	200 mW	200 mW	200 mW	200 mW
Frequency - Transition	100 MHz	100 MHz	100 MHz	100 MHz	100 MHz
Operating Temperature	-65 to 150°C	-55 to 150°C	-55 to 150°C	to 150°C	-55 to 150°C
Package / Case	SOT-323	SOT-323	SOT-323	SOT-323	SOT-323
Packaging Format	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
Product Status	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

BC846AW RFG (Taiwan Semiconductor Corporation): Direct electrical equivalent with identical hFE specification (110 @ 2 mA, 5 V). Offers increased power dissipation rating (200 mW vs. 150 mW) and ROHS3 compliance. Suitable for applications requiring tape and reel packaging format. Operating temperature range reduced to -55°C minimum.

BC846BW RFG (Taiwan Semiconductor Corporation): Electrical substitute with elevated hFE specification (200 @ 2 mA, 5 V). Increased power dissipation (200 mW) and ROHS3 compliance. Tape and reel packaging. Operating temperature range -55°C to 150°C. Select when higher current gain is required within the same voltage and frequency specifications.

BC846BW,135 (Nexperia USA Inc.): Electrical substitute with hFE specification of 200 @ 2 mA, 5 V and improved Vce saturation (400 mV vs. 600 mV). Offers lower saturation voltage for switching applications. Cut tape and Digi-Reel® packaging format. ROHS3 compliant. REACH Unaffected. Operating temperature range to 150°C (lower bound not specified).

BC846CW RFG (Taiwan Semiconductor Corporation): Electrical substitute with highest hFE specification (420 @ 2 mA, 5 V) within the BC846 series. Increased power dissipation (200 mW) and ROHS3 compliance. Tape and reel packaging. Operating temperature range -55°C to 150°C. Select for applications requiring maximum current gain amplification.

All substitute parts maintain Active product status and REACH Unaffected compliance. Selection between variants depends on specific application requirements for current gain, saturation voltage, power dissipation margin, and packaging format compatibility.

Frequently Asked Questions (FAQ)

Q: Can BC846AW-TP be directly replaced with BC846AW RFG?

A: Yes. Both parts share identical electrical specifications for collector current (100 mA), breakdown voltage (65 V), transition frequency (100 MHz), and hFE (110 @ 2 mA, 5 V). The primary difference is packaging format (Bulk vs. Tape & Reel) and power dissipation rating (150 mW vs. 200 mW). The BC846AW RFG provides additional thermal margin and ROHS3 compliance.

Q: What is the difference between BC846AW, BC846BW, and BC846CW variants?

A: The variants differ in DC current gain (hFE) specification. BC846AW has hFE minimum of 110, BC846BW has hFE minimum of 200, and BC846CW has hFE minimum of 420, all measured at 2 mA collector current and 5 V collector-emitter voltage. All other electrical parameters remain constant across the series.

Q: Is the SOT-323 package footprint identical across all substitute parts?

A: Yes. All listed parts use the SOT-323 (SC-70) surface mount package. PCB footprint and land pattern compatibility is maintained across all substitutes.

Q: Can BC846BW,135 be used in place of BC846AW-TP in a temperature-critical application?

A: The BC846BW,135 operating temperature range is specified only to 150°C maximum, with lower bound not specified in available data. The BC846AW-TP operates from -65°C to 150°C. For applications requiring full -65°C to 150°C range, BC846AW-TP or BC846AW RFG are appropriate selections.

Q: What is the significance of the lower Vce saturation voltage in BC846BW,135?

A: BC846BW,135 exhibits Vce saturation of 400 mV at 5 mA and 100 mA, compared to 600 mV in other variants. Lower saturation voltage reduces power dissipation in saturated switching applications and improves switching speed performance.

Q: Are all substitute parts ROHS3 compliant?

A: BC846AW-TP compliance status is not specified. All identified substitute parts (BC846AW RFG, BC846BW RFG, BC846BW,135, BC846CW RFG) are ROHS3 compliant. All parts maintain REACH Unaffected status.

Q: What packaging formats are available for BC846 series transistors?

A: BC846AW-TP is supplied in Bulk format. Substitute parts are available in Tape & Reel (TR) format (BC846AW RFG, BC846BW RFG, BC846CW RFG) or Cut Tape (CT) & Digi-Reel® format (BC846BW,135). Selection depends on assembly process requirements and volume specifications.

Q: Can higher hFE variants be used as direct substitutes in existing designs?

A: Yes, within the BC846 series. Higher hFE variants (BC846BW or BC846CW) can replace lower hFE variants (BC846AW) in applications where increased current gain is acceptable or beneficial. Circuit behavior may change if gain-dependent biasing is employed; design verification is necessary for gain-critical applications.

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