BC847BT-TP Equivalent & Substitute Parts

Part Overview

The BC847BT-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for small-signal 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-523 package. The part is currently active in production with RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified based on matching electrical performance characteristics and compatible package configurations. Alternative sources and package variants are available from multiple manufacturers including Diodes Incorporated, NXP Semiconductors, Nexperia, onsemi, and Rohm Semiconductor.

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	600 mV @ 5 mA, 100 mA	—
Collector Cutoff Current (Max)	15	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	200 @ 2 mA, 5 V	—
Power Dissipation (Max)	150	mW
Transition Frequency	100	MHz
Operating Temperature Range	-55 to 150	°C
Package Type	SOT-523	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts are grouped into two categories based on electrical and mechanical compatibility:

Category 1: Direct Electrical Equivalents (SOT-523 Package) These parts maintain identical or equivalent electrical specifications and use the same SOT-523 package footprint as the BC847BT-TP. Substitution within this category requires no circuit board redesign.

Category 2: Functional Equivalents (Alternative Packages) These parts provide equivalent electrical performance but use different surface mount packages (SOT-323, SOT-23-3, SOT-416). Substitution requires PCB layout modification to accommodate the alternative package footprint.

Key Parameters Determining Substitution Eligibility:

Collector-Emitter Breakdown Voltage: 45 V (minimum requirement)
Collector Current: 100 mA (minimum requirement)
Transition Frequency: 100 MHz (minimum requirement)
DC Current Gain (hFE): 110 or higher @ 2 mA, 5 V
Vce Saturation: 400–600 mV @ 5 mA, 100 mA
Operating Temperature: -55°C to 150°C minimum
Mounting Type: Surface Mount
RoHS Compliance: ROHS3 preferred

Parameter Comparison

Part Number	Manufacturer	Package	Ic (Max) mA	Vce(br) V	hFE (Min) @ 2mA, 5V	Vce Sat (Max) mV	Power (Max) mW	Freq (MHz)	Temp Range °C	RoHS Status	Product Status
BC847BT-TP	Micro Commercial Co	SOT-523	100	45	200	600	150	100	-55 to 150	ROHS3	Active
BC847AT-7-F	Diodes Incorporated	SOT-523	100	45	110	600	150	100	-55 to 150	ROHS3	Active
BC847AT-7	Diodes Incorporated	SOT-523	100	45	110	600	150	100	-55 to 150	Non-compliant	Discontinued
BC847AW,115	NXP Semiconductors	SOT-323	100	45	110	400	200	100	-55 to 150	ROHS3	Active
BC847AW,135	Nexperia USA Inc.	SOT-323	100	45	110	400	200	100	-55 to 150	ROHS3	Active
BC847BT116	Rohm Semiconductor	SST3 (SOT-23)	100	45	Not specified	600	350	200	-55 to 150	ROHS3	Not For New Designs
BC847BTT1G	onsemi	SOT-416 (SC-75)	100	45	200	600	225	100	-55 to 150	ROHS3	Active
BC847BW,115	NXP USA Inc.	SOT-323	100	45	200	400	200	100	-55 to 150	ROHS3	Active
BC847BW,135	Nexperia USA Inc.	SOT-323	100	45	200	400	200	100	-55 to 150	ROHS3	Active
BC847C,215	Nexperia USA Inc.	TO-236AB (SOT-23)	100	45	420	400	250	100	-55 to 150	ROHS3	Active
BC847C,235	Nexperia USA Inc.	TO-236AB (SOT-23)	100	45	420	400	250	100	-55 to 150	ROHS3	Active

Engineering Selection Recommendations

Primary Substitute (Same Package, Direct Replacement): BC847AT-7-F from Diodes Incorporated is the recommended primary substitute. This part maintains SOT-523 package compatibility, matching electrical specifications within acceptable tolerances, and carries active product status with ROHS3 compliance. The lower hFE minimum (110 vs. 200) is within acceptable operating range for most small-signal applications.

Alternative Substitutes (Package Change Required):

For applications where package footprint flexibility exists, the following active parts provide enhanced performance characteristics:

BC847BW,135 (Nexperia USA Inc., SOT-323): Maintains hFE minimum of 200, improved Vce saturation (400 mV), and higher power rating (200 mW). Requires SOT-323 footprint accommodation.
BC847BTT1G (onsemi, SOT-416): Matches hFE specification (200), provides higher power dissipation (225 mW), and offers enhanced transition frequency (200 MHz). Requires SOT-416 footprint accommodation.
BC847C,235 (Nexperia USA Inc., TO-236AB): Highest hFE specification (420), improved Vce saturation (400 mV), and maximum power rating (250 mW). Requires TO-236AB footprint accommodation. Tape & Reel packaging available.

Parts to Avoid:

BC847AT-7 (Diodes Incorporated): Discontinued at DiGi Electronics and RoHS non-compliant. Not suitable for new designs.
BC847BT116 (Rohm Semiconductor): Marked "Not For New Designs." Avoid for new applications despite active inventory.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Operating temperature range (-55°C to 150°C) is consistent across all qualified alternatives.

Frequently Asked Questions (FAQ)

Q: Can BC847AT-7-F replace BC847BT-TP directly without PCB modification?

A: Yes. BC847AT-7-F uses the same SOT-523 package and maintains electrical compatibility. The hFE minimum specification of 110 (versus 200 for BC847BT-TP) is acceptable for standard small-signal switching applications where exact gain matching is not critical.

Q: What is the difference between BC847AW,115 and BC847AW,135?

A: Both parts are electrically identical BC847A variants in SOT-323 package. The suffix differentiates packaging format: ,115 indicates bulk packaging, while ,135 indicates Tape & Reel (TR) packaging. Select based on assembly process requirements.

Q: Why do some substitutes have lower hFE specifications?

A: The BC847 family includes multiple gain grades (A, B, C variants). BC847A variants specify minimum hFE of 110, while BC847B and BC847C variants specify higher gains (200 and 420 respectively). Lower gain specifications do not indicate inferior performance; they reflect different manufacturing grades suitable for different circuit requirements.

Q: Can I use BC847C,235 in place of BC847BT-TP?

A: BC847C,235 is electrically compatible but requires PCB redesign due to TO-236AB package footprint difference from SOT-523. The higher hFE (420) and improved Vce saturation (400 mV) provide enhanced performance for switching applications. Verify PCB layout compatibility before substitution.

Q: What is the significance of the package designations (SOT-523, SOT-323, TO-236AB)?

A: Package designation indicates physical footprint and pin configuration. SOT-523 is a 5-pin package, SOT-323 is a 3-pin package, and TO-236AB is a 3-pin package with different dimensions. Substitution between different packages requires PCB layout modification. Same-package substitutes require no layout changes.

Q: Are all recommended substitutes RoHS3 compliant?

A: Yes. All active, recommended substitutes carry ROHS3 compliance certification. BC847AT-7 (discontinued variant) is RoHS non-compliant and should not be used in new designs.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Both are surface mount delivery formats. Tape & Reel (TR) is supplied on continuous carrier tape suitable for automated assembly equipment. Cut Tape (CT) is supplied in smaller quantities on cut tape segments. Select based on assembly volume and equipment capability.

Q: Can I substitute BC847BT116 for BC847BT-TP?

A: BC847BT116 meets electrical specifications but carries "Not For New Designs" status. While inventory is available, this part should not be selected for new circuit designs. Use BC847AT-7-F or BC847BTT1G instead.

Q: What does AEC-Q101 qualification indicate?

A: AEC-Q101 is an automotive electronics qualification standard. Parts carrying this certification (such as BC847AW,115, BC847BW,115, and BC847C variants) meet automotive-grade reliability and performance requirements. These parts are suitable for both commercial and automotive applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message