BC847CT,115 Equivalent & Substitute Parts Reference

Part Overview

The BC847CT,115 is an NPN bipolar junction transistor manufactured by NXP USA Inc. in SC-75 (SOT-416) surface mount packaging. This device is rated for 45 V collector-emitter breakdown voltage, 100 mA maximum collector current, and 100 MHz transition frequency. The part is classified as obsolete, though 1007 pieces remain in stock as new original inventory. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for ongoing design support and production continuity. Substitute parts maintain electrical compatibility while offering active product status and extended availability.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	45	V
Current - Collector (Ic) (Max)	100	mA
Vce Saturation (Max) @ Ib, Ic	400mV @ 5mA, 100mA	—
DC Current Gain (hFE) (Min) @ Ic, Vce	420 @ 2mA, 5V	—
Power - Max	150	mW
Frequency - Transition	100	MHz
Operating Temperature (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-75, SOT-416	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the BC847CT,115 is determined by strict electrical and mechanical compatibility criteria. The following parameters must be maintained or exceeded in substitute parts:

Critical Electrical Parameters:

Transistor type: NPN
Voltage - Collector Emitter Breakdown (Max): ≥ 45 V
Current - Collector (Ic) (Max): ≥ 100 mA
DC Current Gain (hFE) (Min) @ Ic, Vce: ≥ 420 @ 2mA, 5V
Frequency - Transition: ≥ 100 MHz
Power - Max: ≥ 150 mW

Critical Mechanical Parameters:

Mounting Type: Surface Mount
Package / Case: SC-75 (SOT-416), SC-70 (SOT-323), TO-236-3 (SOT-23-3), SOT-523, SOT-883, or DFN1006B-3

Compliance Requirements:

RoHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped by package type and manufacturer. Parts maintaining identical electrical specifications and automotive qualification are listed as direct equivalents. Parts with enhanced electrical performance (higher power rating, extended temperature range, or higher transition frequency) are listed as functional upgrades suitable for the same application.

Parameter Comparison

Parameter	BC847CT,115 (Main)	BC847BTT1G	BC847BWT1G	BC847C,215	BC847CM,315	BC847CMB,315	BC847CT-TP	BC847CW,115	BC847CW-TP	MMBT2222ATT1G	MMBT2222ATT3G
Manufacturer	NXP USA Inc.	onsemi	onsemi	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	Micro Commercial Co	Nexperia USA Inc.	Micro Commercial Co	onsemi	onsemi
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	45 V	45 V	45 V	45 V	45 V	45 V	45 V	45 V	45 V	40 V	40 V
Current - Collector (Ic) (Max)	100 mA	100 mA	100 mA	100 mA	100 mA	100 mA	100 mA	100 mA	100 mA	600 mA	600 mA
Vce Saturation (Max) @ Ib, Ic	400mV @ 5mA, 100mA	600mV @ 5mA, 100mA	600mV @ 5mA, 100mA	400mV @ 5mA, 100mA	400mV @ 5mA, 100mA	200mV @ 500µA, 10mA	600mV @ 5mA, 100mA	400mV @ 5mA, 100mA	600mV @ 5mA, 100mA	1V @ 50mA, 500mA	1V @ 50mA, 500mA
DC Current Gain (hFE) (Min) @ Ic, Vce	420 @ 2mA, 5V	200 @ 2mA, 5V	200 @ 2mA, 5V	420 @ 2mA, 5V	420 @ 2mA, 5V	420 @ 2mA, 5V	420 @ 2mA, 5V	420 @ 2mA, 5V	420 @ 2mA, 5V	100 @ 150mA, 10V	100 @ 150mA, 10V
Power - Max	150 mW	225 mW	150 mW	250 mW	250 mW	250 mW	150 mW	200 mW	Not specified	150 mW	150 mW
Frequency - Transition	100 MHz	100 MHz	100 MHz	100 MHz	100 MHz	100 MHz	100 MHz	100 MHz	100 MHz	300 MHz	300 MHz
Operating Temperature (Max)	150°C	150°C	150°C	150°C	150°C	150°C	150°C	150°C	150°C	150°C	150°C
Operating Temperature (Min)	Not specified	-55°C	-55°C	Not specified	Not specified	Not specified	-55°C	Not specified	-65°C	-55°C	-55°C
Package / Case	SC-75, SOT-416	SC-75, SOT-416	SC-70, SOT-323	TO-236-3, SC-59, SOT-23-3	SC-101, SOT-883	3-XFDFN	SOT-523	SC-70, SOT-323	SC-70, SOT-323	SC-75, SOT-416	SC-75, SOT-416
Grade	Automotive	Not specified	Not specified	Automotive	Automotive	Automotive	Not specified	Not specified	Not specified	Not specified	Not specified
Qualification	AEC-Q101	Not specified	Not specified	AEC-Q101	AEC-Q101	AEC-Q101	Not specified	Not specified	Not specified	Not specified	Not specified
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount

Engineering Selection Recommendations

Direct Equivalents (SC-75/SOT-416 Package):

BC847BTT1G (onsemi) and MMBT2222ATT1G / MMBT2222ATT3G (onsemi) are active production alternatives in the same SC-75 (SOT-416) package. BC847BTT1G maintains 45 V breakdown voltage and 100 mA collector current with enhanced power rating (225 mW vs. 150 mW). MMBT2222 series provides higher collector current capability (600 mA) and transition frequency (300 MHz) with 40 V breakdown voltage, suitable for applications requiring higher current handling.

Automotive-Grade Equivalents (Alternative Packages):

BC847C,215 (Nexperia, TO-236AB/SOT-23-3), BC847CM,315 (Nexperia, SOT-883), and BC847CMB,315 (Nexperia, DFN1006B-3) maintain automotive qualification (AEC-Q101) and identical electrical specifications to the main part. These alternatives offer different package footprints for space-constrained or high-density applications while preserving automotive-grade reliability.

General-Purpose Equivalents (Extended Temperature Range):

BC847BWT1G (onsemi, SC-70/SOT-323) and BC847CW,115 (Nexperia, SC-70/SOT-323) provide active status with extended operating temperature range (-55°C to 150°C). BC847CW-TP (Micro Commercial Co, SC-70/SOT-323) extends the minimum operating temperature to -65°C. These parts are suitable for applications requiring wider temperature operation without automotive qualification requirements.

Selection Criteria:

For automotive applications: Select BC847C,215, BC847CM,315, or BC847CMB,315 to maintain AEC-Q101 qualification.
For higher current applications: Select MMBT2222ATT1G or MMBT2222ATT3G (600 mA capability).
For space-constrained designs: Select BC847CM,315 (SOT-883) or BC847CMB,315 (DFN1006B-3).
For extended temperature range: Select BC847BWT1G, BC847CW,115, or BC847CW-TP.
For SC-75 package continuity: Select BC847BTT1G.

All substitute parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q1: Can BC847BTT1G replace BC847CT,115 in a 1:1 basis?

BC847BTT1G is a functional equivalent in the same SC-75 (SOT-416) package. Both are NPN transistors with 45 V breakdown voltage and 100 mA maximum collector current. BC847BTT1G has a higher power rating (225 mW vs. 150 mW) and lower minimum DC current gain (200 vs. 420 @ 2mA, 5V). Verify that the lower gain specification does not affect circuit biasing or performance in your application.

Q2: What is the difference between BC847C,215 and BC847CT,115?

BC847C,215 uses TO-236AB (SOT-23-3) package instead of SC-75 (SOT-416). Both maintain identical electrical specifications (45 V, 100 mA, 100 MHz, 420 hFE min) and automotive qualification (AEC-Q101). The TO-236AB package is larger than SC-75, requiring different PCB footprint and assembly considerations.

Q3: Can MMBT2222ATT1G be used as a direct replacement?

MMBT2222ATT1G is not a direct 1:1 replacement. It has lower breakdown voltage (40 V vs. 45 V), higher collector current (600 mA vs. 100 mA), and significantly lower DC current gain (100 vs. 420 @ 2mA, 5V). Use MMBT2222 only if your circuit can tolerate these electrical differences and does not require the 45 V breakdown voltage specification.

Q4: Which substitute part is best for automotive applications?

BC847C,215, BC847CM,315, and BC847CMB,315 all maintain automotive qualification (AEC-Q101) and are suitable for automotive applications. Select based on package requirements: TO-236AB (SOT-23-3) for BC847C,215, SOT-883 for BC847CM,315, or DFN1006B-3 for BC847CMB,315.

Q5: What is the difference between BC847CW,115 and BC847CW-TP?

Both use SC-70 (SOT-323) package. BC847CW,115 (Nexperia) operates from unspecified minimum temperature to 150°C. BC847CW-TP (Micro Commercial Co) operates from -65°C to 150°C, providing extended low-temperature operation. BC847CW-TP has higher collector cutoff current (100nA vs. 15nA) and different Vce saturation specification (600mV vs. 400mV).

Q6: Are all substitute parts RoHS3 compliant?

Yes. All substitute parts listed are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the main part specification.

Q7: Can I use BC847CM,315 (SOT-883) in place of BC847CT,115 (SC-75)?

BC847CM,315 is electrically equivalent but uses a different package (SOT-883 vs. SC-75). PCB footprint, assembly process, and component placement will differ. Verify that your PCB design and assembly equipment support SOT-883 package before substitution.

Q8: What is the minimum DC current gain for substitute parts?

BC847BTT1G and BC847BWT1G have minimum DC current gain of 200 @ 2mA, 5V. All other BC847 variants maintain 420 @ 2mA, 5V. MMBT2222 series has 100 @ 150mA, 10V. Verify that your circuit design accommodates the specified gain range for each part.

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