BCV46TC Equivalent & Substitute Parts

Part Overview

The BCV46TC is a PNP Darlington bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-23-3 package. This device operates at a maximum collector current of 500 mA with a 60 V collector-emitter breakdown voltage and delivers 330 mW maximum power dissipation. The BCV46TC is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across critical parameters including collector current, breakdown voltage, DC current gain, and thermal operating range to ensure functional equivalence in circuit applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP - Darlington	—
Current - Collector (Ic) (Max)	500	mA
Voltage - Collector Emitter Breakdown (Max)	60	V
Vce Saturation (Max) @ Ib, Ic	1V @ 100µA, 100mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	10000 @ 100mA, 5V	—
Power - Max	330	mW
Frequency - Transition	200	MHz
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-23-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BCV46TC are classified into two categories based on electrical parameter alignment:

Parametric Equivalents maintain identical or superior electrical specifications across all critical parameters: collector current (500 mA), collector-emitter breakdown voltage (60 V), DC current gain (10000 @ 100mA, 5V), saturation voltage (1V @ 100µA, 100mA), and operating temperature range (-55°C to 150°C). These parts are direct functional replacements with no circuit redesign required.

Partial Equivalents meet the majority of electrical specifications but contain deviations in one or more parameters. These parts are suitable for applications where the specific parameter deviation does not impact circuit performance. Deviations must be evaluated against circuit requirements before selection.

The following key parameters determine substitution eligibility:

Collector current rating (Ic Max) must equal or exceed 500 mA
Collector-emitter breakdown voltage (Vceo) must equal or exceed 60 V
DC current gain (hFE) must equal or exceed 10000 @ 100mA, 5V
Saturation voltage (Vce Sat) must not exceed 1V @ 100µA, 100mA
Operating temperature range must encompass -55°C to 150°C
Package must be SOT-23-3 compatible
RoHS3 compliance required

Parameter Comparison

Parameter	BCV46TC (Main)	BCV46TA	BCV46,215	2SB852KT146B
Manufacturer	Diodes Incorporated	Diodes Incorporated	Nexperia USA Inc.	Rohm Semiconductor
Product Status	Obsolete	Active	Active	Active
Transistor Type	PNP - Darlington	PNP - Darlington	PNP - Darlington	PNP - Darlington
Current - Collector (Ic) (Max)	500 mA	500 mA	500 mA	300 mA
Voltage - Collector Emitter Breakdown (Max)	60 V	60 V	60 V	32 V
Vce Saturation (Max) @ Ib, Ic	1V @ 100µA, 100mA	1V @ 100µA, 100mA	1V @ 100µA, 100mA	1.5V @ 400µA, 200mA
Current - Collector Cutoff (Max)	100 nA	100 nA	100 nA	1 µA
DC Current Gain (hFE) (Min) @ Ic, Vce	10000 @ 100mA, 5V	10000 @ 100mA, 5V	10000 @ 100mA, 5V	5000 @ 100mA, 5V
Power - Max	330 mW	330 mW	250 mW	200 mW
Frequency - Transition	200 MHz	200 MHz	220 MHz	200 MHz
Operating Temperature Range	-55 to 150°C	-55 to 150°C	150°C (Max)	150°C (Max)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOT-23-3	SOT-23-3	SOT-23-3	SOT-23-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

BCV46TA (Diodes Incorporated) is the primary parametric equivalent for the BCV46TC. This part maintains identical electrical specifications across all critical parameters and is classified as active product status, ensuring long-term availability and supply chain continuity. The BCV46TA is supplied in Tape & Reel packaging with 3395 pieces in current inventory. Selection of BCV46TA requires no circuit modifications and provides direct functional replacement.

BCV46,215 (Nexperia USA Inc.) is a direct manufacturer equivalent with active product status. This part meets all core electrical specifications including 500 mA collector current, 60 V breakdown voltage, and 10000 DC current gain. The BCV46,215 is qualified to AEC-Q101 automotive standards and carries automotive-grade designation. Power dissipation is rated at 250 mW (80 mW lower than the main part) and transition frequency is 220 MHz (20 MHz higher). Operating temperature maximum is specified at 150°C without lower temperature limit documentation. Selection of BCV46,215 is appropriate for automotive applications requiring AEC-Q101 qualification.

2SB852KT146B (Rohm Semiconductor) is a partial equivalent with active product status. This part exhibits deviations in collector current (300 mA versus 500 mA), collector-emitter breakdown voltage (32 V versus 60 V), DC current gain (5000 versus 10000), saturation voltage (1.5V versus 1V), and power dissipation (200 mW versus 330 mW). The 2SB852KT146B is suitable only for applications where circuit requirements do not exceed 300 mA collector current and 32 V operating voltage. This part is not recommended as a direct substitute for the BCV46TC in circuits designed for the full 500 mA and 60 V specifications.

All substitute parts maintain RoHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and SOT-23-3 package compatibility with the main part.

Frequently Asked Questions (FAQ)

Q: Can BCV46TA be used as a direct replacement for BCV46TC?

A: Yes. The BCV46TA maintains identical electrical specifications across all critical parameters including collector current (500 mA), breakdown voltage (60 V), DC current gain (10000), saturation voltage (1V), and operating temperature range (-55°C to 150°C). No circuit modifications are required. The BCV46TA is active product status with established supply availability.

Q: What is the difference between BCV46,215 and BCV46TC?

A: The BCV46,215 meets all core electrical specifications but has lower maximum power dissipation (250 mW versus 330 mW) and higher transition frequency (220 MHz versus 200 MHz). The BCV46,215 is qualified to AEC-Q101 automotive standards. Operating temperature documentation specifies 150°C maximum without lower limit specification. These differences do not affect functional equivalence in most applications.

Q: Is 2SB852KT146B a suitable substitute for BCV46TC?

A: The 2SB852KT146B is not a direct substitute. This part has reduced collector current rating (300 mA versus 500 mA), lower breakdown voltage (32 V versus 60 V), lower DC current gain (5000 versus 10000), and higher saturation voltage (1.5V versus 1V). Use 2SB852KT146B only in applications where circuit requirements do not exceed 300 mA collector current and 32 V operating voltage.

Q: Are all substitute parts available in SOT-23-3 packaging?

A: Yes. All substitute parts listed are available in SOT-23-3 package configuration, ensuring mechanical and thermal compatibility with the BCV46TC footprint and PCB layout.

Q: Do substitute parts maintain RoHS3 compliance?

A: Yes. All substitute parts are ROHS3 compliant and carry MSL Level 1 (unlimited) moisture sensitivity rating, matching the environmental and regulatory compliance of the BCV46TC.

Q: What is the inventory status of substitute parts?

A: BCV46TA has 3395 pieces in stock. BCV46,215 has 3000 pieces in stock. 2SB852KT146B has 24100 pieces in stock. All parts are classified as new original inventory.

Q: Can BCV46TC be used interchangeably with BCV46TA in existing designs?

A: Yes. The BCV46TA is a parametric equivalent with identical electrical specifications. Existing designs using BCV46TC can be updated to BCV46TA without circuit redesign or performance impact.

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