BCP6825TA Equivalent & Substitute Parts

Part Overview

The BCP6825TA is an NPN bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-223-3 package. This component operates at a maximum collector current of 1 A with a 20 V collector-emitter breakdown voltage and 2 W maximum power dissipation. The device is classified as obsolete, necessitating identification of active equivalent and substitute parts for new designs and ongoing production requirements. Equivalent parts must maintain electrical compatibility across critical parameters including voltage rating, current capacity, and thermal characteristics while accommodating the SOT-223-3 package standard.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	1	A
Voltage - Collector Emitter Breakdown (Max)	20	V
Vce Saturation (Max) @ Ib, Ic	500mV @ 100mA, 1A	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) Min @ Ic, Vce	160 @ 500mA, 1V	—
Power - Max	2	W
Frequency - Transition	100	MHz
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-261-4, TO-261AA	—
Supplier Device Package	SOT-223-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BCP6825TA is determined by strict electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Transistor type must be NPN
Collector-emitter breakdown voltage must be ≥ 20 V
Maximum collector current must be ≥ 1 A
Vce saturation characteristics must support the specified operating point
Collector cutoff current must not exceed 100 nA
DC current gain (hFE) must meet minimum specifications at rated conditions
Maximum power dissipation must be ≥ 2 W

Mechanical Compatibility Criteria:

Package must be SOT-223-3 or equivalent TO-261-4/TO-261AA footprint
Surface mount mounting type required
Moisture sensitivity level must be ≤ 1

Compliance Requirements:

RoHS3 compliance mandatory
REACH unaffected status required

Substitute parts are grouped into two categories: direct electrical equivalents (matching all primary electrical specifications) and functional substitutes (meeting or exceeding electrical requirements with enhanced performance characteristics).

Parameter Comparison

Parameter	BCP6825TA (Main)	BCP68T1G	BCP68,115	BCP68-25,115	BCP68-25,135	FZT489TA
Manufacturer	Diodes Inc.	onsemi	NXP USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	Diodes Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN
Ic (Max)	1 A	1 A	1 A	2 A	2 A	1 A
Vce Breakdown (Max)	20 V	20 V	20 V	20 V	20 V	30 V
Vce Saturation (Max) @ Ib, Ic	500mV @ 100mA, 1A	500mV @ 100mA, 1A	500mV @ 100mA, 1A	600mV @ 200mA, 2A	600mV @ 200mA, 2A	600mV @ 200mA, 2A
Icbo (Max)	100 nA	10 µA	100 nA	100 nA	100 nA	100 nA
hFE (Min) @ Ic, Vce	160 @ 500mA, 1V	85 @ 500mA, 1V	85 @ 500mA, 1V	160 @ 500mA, 1V	160 @ 500mA, 1V	100 @ 1A, 2V
Power (Max)	2 W	1.5 W	1.4 W	650 mW	650 mW	2 W
Frequency - Transition	100 MHz	60 MHz	170 MHz	170 MHz	170 MHz	150 MHz
Operating Temperature (TJ)	-55 to 150 °C	-65 to 150 °C	150 °C	150 °C	150 °C	-55 to 150 °C
Package	SOT-223-3	SOT-223	SOT-223	SOT-223	SOT-223	SOT-223-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Electrical Equivalents (Primary Substitutes):

The BCP68T1G manufactured by onsemi provides direct electrical equivalence to the BCP6825TA across all critical parameters. Both devices operate at 1 A maximum collector current, 20 V breakdown voltage, and 500 mV saturation voltage at rated conditions. The BCP68T1G maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating. This part is suitable for direct replacement in existing designs without circuit modification.

The FZT489TA from Diodes Incorporated offers enhanced electrical performance with 30 V breakdown voltage and 150 MHz transition frequency while maintaining 1 A collector current and 2 W power dissipation. This part is electrically superior to the BCP6825TA and maintains active status with full compliance certifications.

Functional Substitutes (Enhanced Performance):

The BCP68,115 from NXP USA Inc. (Nexperia) provides equivalent voltage and current ratings with enhanced transition frequency of 170 MHz. Power dissipation is reduced to 1.4 W, which may limit applications requiring full 2 W thermal headroom. This part is active and fully compliant.

The BCP68-25,115 and BCP68-25,135 from Nexperia USA Inc. offer doubled collector current capacity (2 A maximum) while maintaining 20 V breakdown voltage. These parts support higher current applications and feature 170 MHz transition frequency. Power dissipation is 650 mW, requiring thermal design consideration for applications approaching 2 W dissipation limits. Both variants are active and fully compliant, with BCP68-25,115 supplied in cut tape and BCP68-25,135 in tape and reel packaging.

Selection Basis:

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring compatibility with modern manufacturing and storage requirements. Product status is active for all substitutes, ensuring long-term availability and supply chain stability. Electrical parameters across all substitutes meet or exceed the BCP6825TA specifications for voltage, current, and saturation characteristics, permitting direct circuit substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the BCP68T1G directly replace the BCP6825TA in existing designs?

A: Yes. The BCP68T1G maintains identical electrical specifications for collector current (1 A), breakdown voltage (20 V), and saturation voltage (500 mV @ 100mA, 1A). Both devices use the SOT-223 package with equivalent TO-261-4/TO-261AA footprints. No circuit modification is required.

Q: What is the primary difference between BCP68-25,115 and BCP68-25,135?

A: Both parts are electrically identical with 2 A maximum collector current and 20 V breakdown voltage. The difference is packaging: BCP68-25,115 is supplied in cut tape and digi-reel format, while BCP68-25,135 is supplied in tape and reel format. Selection depends on procurement and assembly requirements.

Q: Why do BCP68-25,115 and BCP68-25,135 have lower maximum power dissipation (650 mW) compared to the BCP6825TA (2 W)?

A: The BCP68-25 series is optimized for higher current operation (2 A maximum) at lower power dissipation. Applications requiring sustained 2 W dissipation should use BCP68T1G or FZT489TA instead.

Q: Is the FZT489TA suitable for applications designed for the BCP6825TA?

A: Yes. The FZT489TA exceeds BCP6825TA specifications with 30 V breakdown voltage (versus 20 V) and 150 MHz transition frequency (versus 100 MHz). The 1 A collector current and 2 W power dissipation match the original part. The higher voltage rating provides additional design margin.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (BCP68T1G, BCP68,115, BCP68-25,115, BCP68-25,135, and FZT489TA) are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the BCP6825TA compliance profile.

Q: What is the operating temperature range difference between BCP68T1G and other substitutes?

A: The BCP68T1G operates from -65°C to 150°C, providing 10°C lower minimum temperature compared to the BCP6825TA (-55°C to 150°C). Other substitutes (BCP68,115, BCP68-25,115, BCP68-25,135) specify only maximum temperature of 150°C without minimum temperature specification. The BCP68T1G and FZT489TA provide the widest operating temperature range.

Q: Can BCP68-25 parts be used in applications requiring 1 A maximum current?

A: Yes. The BCP68-25 series with 2 A maximum collector current is fully compatible with 1 A applications. The higher current rating provides design margin without affecting circuit operation at lower current levels.

Q: What packaging options are available for substitutes?

A: BCP68T1G is supplied in tape and reel (TR). BCP68,115 is supplied in bulk. BCP68-25,115 is supplied in cut tape (CT) and digi-reel format. BCP68-25,135 is supplied in tape and reel (TR). FZT489TA is supplied in tape and reel (TR). Selection depends on assembly equipment and procurement volume requirements.

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