BC817-25 NPN Bipolar Transistor Equivalent & Substitute Parts

Part Overview

The BC817-25 is an NPN bipolar junction transistor manufactured by EVVO Semi, designed for general-purpose switching and amplification applications. This surface mount device operates at 45V collector-emitter breakdown voltage with a maximum collector current of 500mA and 300mW power dissipation. The part is Active status with 999,364 pieces in current inventory. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and packaging specifications to ensure direct functional replacement in circuit designs.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector Current (Ic) Maximum	500	mA
Collector-Emitter Breakdown Voltage (Max)	45	V
Vce Saturation (Max)	700	mV @ 50mA, 500mA
Collector Cutoff Current (ICBO)	100	nA
DC Current Gain (hFE) Minimum	160	@ 100mA, 1V
Power Dissipation Maximum	300	mW
Transition Frequency	100	MHz
Operating Temperature Maximum	150	°C (TJ)
Package Type	SOT-23-3 (TO-236-3, SC-59)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BC817-25 are qualified based on the following critical parameters:

Electrical Equivalence Criteria:

Transistor Type: NPN configuration
Collector Current (Ic) Maximum: 500mA
Collector-Emitter Breakdown Voltage: 45V
Vce Saturation: 700mV @ 50mA, 500mA
Collector Cutoff Current (ICBO): 100nA
DC Current Gain (hFE) Minimum: 160 @ 100mA, 1V
Power Dissipation: 300mW
Transition Frequency: 100MHz

Mechanical Compatibility Criteria:

Package: SOT-23-3 (TO-236-3, SC-59)
Mounting: Surface Mount
Moisture Sensitivity Level: 1 (Unlimited)

Compliance Criteria:

RoHS3 Compliant
ECCN: EAR99
HTSUS: 8541.21.0075

All identified substitute parts match these parameters exactly. Variations in operating temperature range, packaging format (Cut Tape vs. Tape & Reel), and automotive qualification do not affect electrical substitutability.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce Breakdown (Max) V	Vce Sat (Max) mV	hFE (Min)	Power (Max) mW	Freq (MHz)	Temp Range °C	Package	Packaging Format
BC817-25	EVVO Semi	500	45	700	160	300	100	0 to 150	SOT-23-3	Cut Tape & Digi-Reel
ABC817-25-HF	Comchip Technology	500	45	700	160	300	100	-55 to 150	SOT-23-3	Tape & Reel
BC817-25 RFG	Taiwan Semiconductor Corporation	500	45	700	160	300	100	-55 to 150	SOT-23-3	Tape & Reel
BC817-25LT1G	onsemi	500	45	700	160	300	100	-65 to 150	SOT-23-3	Cut Tape & Digi-Reel
BC817-25LT3G	onsemi	500	45	700	160	300	100	-65 to 150	SOT-23-3	Cut Tape & Digi-Reel
SBC817-25LT1G	onsemi	500	45	700	160	300	100	-65 to 150	SOT-23-3	Tape & Reel
SBC817-25LT3G	onsemi	500	45	700	160	300	100	-65 to 150	SOT-23-3	Cut Tape & Digi-Reel

Engineering Selection Recommendations

Standard Commercial Applications: BC817-25LT1G and BC817-25LT3G (onsemi) are suitable for standard commercial designs. Both parts are Active status with extended operating temperature range (-65°C to 150°C) and ROHS3 compliance. Inventory availability is 245,644 and 45,400 pieces respectively.

Automotive-Grade Requirements: SBC817-25LT1G and SBC817-25LT3G (onsemi) are qualified for automotive applications with AEC-Q101 certification and automotive-grade designation. Operating temperature range extends to -65°C. Inventory availability is 248,845 and 35,400 pieces respectively.

Alternative Manufacturers: ABC817-25-HF (Comchip Technology) and BC817-25 RFG (Taiwan Semiconductor Corporation) provide equivalent electrical performance with extended temperature ranges. ABC817-25-HF includes automotive-grade qualification. Inventory availability is 4,129 and 86,300 pieces respectively.

Packaging Format Selection: Cut Tape & Digi-Reel format is suitable for manual assembly and small-volume production. Tape & Reel format is optimized for automated pick-and-place assembly in high-volume manufacturing.

Frequently Asked Questions (FAQ)

Q: Can BC817-25LT1G directly replace BC817-25 in existing designs? A: Yes. BC817-25LT1G matches all electrical parameters (Ic, Vce breakdown, hFE, power dissipation, frequency) and uses the same SOT-23-3 package. The extended operating temperature range (-65°C to 150°C versus 0°C to 150°C) provides additional margin for temperature-sensitive applications.

Q: What is the difference between BC817-25LT1G and BC817-25LT3G? A: Both parts are manufactured by onsemi with identical electrical specifications and operating temperature range. The difference is in the manufacturing date code designation (LT1G versus LT3G). Both are Active status and functionally interchangeable.

Q: When should SBC817-25LT1G or SBC817-25LT3G be selected instead of standard BC817-25? A: SBC817-25 variants include AEC-Q101 automotive qualification and automotive-grade designation. These parts are required for automotive applications or designs requiring automotive-grade component certification.

Q: Are ABC817-25-HF and BC817-25 RFG suitable for high-volume production? A: Yes. ABC817-25-HF is available in Tape & Reel format with 4,129 pieces in stock. BC817-25 RFG is available in Tape & Reel format with 86,300 pieces in stock, supporting automated assembly processes.

Q: Does packaging format (Cut Tape vs. Tape & Reel) affect electrical performance? A: No. Packaging format affects only the delivery and handling method. Electrical performance and functional characteristics are identical regardless of packaging format.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All identified substitute parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of the BC817-25.

Q: Can BC817-25 be used in applications requiring automotive qualification? A: No. BC817-25 does not include automotive-grade designation or AEC-Q101 qualification. For automotive applications, use SBC817-25LT1G or SBC817-25LT3G.

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