Equivalent & Substitute Parts Reference for BC850BW

Part Overview

The BC850BW, manufactured by Taiwan Semiconductor Corporation, is an NPN Bipolar (BJT) Transistor in the SOT-323 package. It features a maximum collector current of 100 mA, a collector-emitter breakdown voltage of 45 V, a minimum DC current gain (hFE) of 200, and a maximum transition frequency of 100 MHz. The part is active and supplied in tape & reel packaging.

Finding alternative models is necessary in scenarios of supply constraints, mandatory cross-sourcing, or inventory optimization, provided that substitutes strictly match or exceed the essential electrical and mechanical parameters of the BC850BW.

Key Parameters

Parameter	Value
Transistor Type	NPN
Current - Collector (Ic) (Max)	100 mA
Voltage - Collector Emitter Breakdown (Max)	45 V
Vce Saturation (Max) @ Ib, Ic	600mV @ 5mA, 100mA
Current - Collector Cutoff (Max)	15nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce	200 @ 2mA, 5V
Power - Max	200 mW
Frequency - Transition	100MHz
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	SC-70, SOT-323
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Substitution is determined strictly by the match of the following key parameters: transistor type (NPN), maximum collector current (Ic), collector-emitter breakdown voltage (Vce), DC current gain (hFE), maximum power dissipation, transition frequency, operating temperature range, mounting type, and package/case. Substitute models are grouped as either parametric equivalents—matching all key electrical parameters and package—or functional alternatives, which may have minor differences in characteristics yet satisfy permitted substitution criteria.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Transistor Type	Current - Collector (Ic) (Max)	Voltage - Collector Emitter Breakdown (Max)	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Frequency - Transition	Operating Temperature	Mounting Type	Package / Case	RoHS Status	REACH Status	ECCN
BC850BW	Taiwan Semiconductor Corporation	NPN	100 mA	45 V	600mV @ 5mA, 100mA	15nA (ICBO)	200 @ 2mA, 5V	200 mW	100MHz	-55°C ~ 150°C (TJ)	Surface Mount	SC-70, SOT-323	ROHS3 Compliant	REACH Unaffected	EAR99
BC847BW-TP	Micro Commercial Co	NPN	100 mA	45 V	600mV @ 5mA, 100mA	100nA	200 @ 2mA, 5V	-	100MHz	-65°C ~ 150°C (TJ)	Surface Mount	SC-70, SOT-323	ROHS3 Compliant	REACH Unaffected	EAR99
BC847AWT1G	onsemi	NPN	100 mA	45 V	600mV @ 5mA, 100mA	15nA (ICBO)	110 @ 2mA, 5V	150 mW	100MHz	-55°C ~ 150°C (TJ)	Surface Mount	SC-70, SOT-323	ROHS3 Compliant	REACH Unaffected	EAR99
BC847BW	Taiwan Semiconductor Corporation	NPN	100 mA	45 V	600mV @ 5mA, 100mA	15nA (ICBO)	200 @ 2mA, 5V	200 mW	100MHz	-55°C ~ 150°C (TJ)	Surface Mount	SC-70, SOT-323	ROHS3 Compliant	REACH Unaffected	EAR99
BC847BW,115	NXP USA Inc.	NPN	100 mA	45 V	400mV @ 5mA, 100mA	15nA (ICBO)	200 @ 2mA, 5V	200 mW	100MHz	150°C (TJ)	Surface Mount	SC-70, SOT-323	ROHS3 Compliant	-	EAR99
BC847BW,135	Nexperia USA Inc.	NPN	100 mA	45 V	400mV @ 5mA, 100mA	15nA (ICBO)	200 @ 2mA, 5V	200 mW	100MHz	150°C (TJ)	Surface Mount	SC-70, SOT-323	ROHS3 Compliant	REACH Unaffected	EAR99
BC847BW-QF	Nexperia USA Inc.	NPN	100 mA	45 V	400mV @ 5mA, 100mA	15nA (ICBO)	200 @ 2mA, 5V	200 mW	100MHz	150°C (TJ)	Surface Mount	SC-70, SOT-323	ROHS3 Compliant	REACH Unaffected	EAR99
BC850BW,115	Nexperia USA Inc.	NPN	100 mA	45 V	600mV @ 5mA, 100mA	15nA (ICBO)	200 @ 2mA, 5V	200 mW	100MHz	150°C (TJ)	Surface Mount	SC-70, SOT-323	ROHS3 Compliant	REACH Unaffected	EAR99
BC850BW,135	Nexperia USA Inc.	NPN	100 mA	45 V	600mV @ 5mA, 100mA	15nA (ICBO)	200 @ 2mA, 5V	200 mW	100MHz	150°C (TJ)	Surface Mount	SC-70, SOT-323	ROHS3 Compliant	REACH Unaffected	EAR99

Engineering Selection Recommendations

All listed substitute part numbers are "Active". Each substitute meets the same RoHS (ROHS3 Compliant) and REACH statuses, and shares ECCN classification EAR99. Selection can be based on compliance and product status parameters; all parts are suitable for substitution under current regulatory requirements and supply status. No alternate certifications have been indicated for additional qualification.

Frequently Asked Questions (FAQ)

Q1: What are the mandatory parameters for substituting BC850BW in a design?
A1: Substitution requires strict alignment of transistor type, collector current (Ic), breakdown voltage (Vce), minimum DC current gain (hFE), power dissipation, transition frequency, mounting type, and package.

Q2: Are there differences in packaging between substitute parts?
A2: All listed substitutes use the SC-70, SOT-323 surface mount package, which ensures physical compatibility.

Q3: Is there any variation in electrical performance among substitutes?
A3: Substitute parts may show small differences in Vce saturation and DC current gain, but remain within the permitted substitution range based on the input parameters.

Q4: What compliance statuses should be considered when selecting a substitute?
A4: All listed substitutes are ROHS3 Compliant and REACH Unaffected, ensuring regulatory compatibility.

Q5: Are automotive-grade substitutions available?
A5: Automotive-grade options with AEC-Q101 qualification are presented for part numbers where the grade and qualification are specified.

Q6: Is inventory availability provided for these substitutes?
A6: Inventory quantities are listed in the part descriptions for reference during sourcing considerations.

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