BC817-25/SNR Equivalent & Substitute Parts

Part Overview

The BC817-25/SNR is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for general-purpose switching and amplification applications. This device operates at 45 V collector-emitter breakdown voltage with a maximum collector current of 500 mA and 250 mW power dissipation in a surface mount TO-236AB package. The BC817-25/SNR is classified as obsolete, necessitating identification of active equivalent and substitute parts for new designs and ongoing production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer compatible performance within the same application envelope.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	45	V
Current - Collector (Ic) (Max)	500	mA
Power - Max	250	mW
Frequency - Transition	100	MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	160 @ 100mA, 1V	—
Vce Saturation (Max) @ Ib, Ic	700mV @ 50mA, 500mA	—
Current - Collector Cutoff (Max)	100	nA
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BC817-25/SNR is determined by electrical and mechanical parameter compatibility. All substitute parts must maintain the following critical specifications:

Electrical Parameters:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): 45 V
Current - Collector (Ic) (Max): 500 mA or greater
Power - Max: 250 mW or greater
Frequency - Transition: 100 MHz or greater
DC Current Gain (hFE) (Min) @ Ic, Vce: 160 @ 100mA, 1V or greater
Vce Saturation (Max) @ Ib, Ic: 700mV @ 50mA, 500mA or lower
Current - Collector Cutoff (Max): 100nA or lower

Mechanical Parameters:

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

Compliance Parameters:

RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

Substitute parts are grouped into two categories: Direct Manufacturer Equivalents (active production parts from Nexperia with identical specifications) and Parametric Equivalents (parts from alternative manufacturers meeting or exceeding all electrical and mechanical requirements).

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max) mA	Vce Breakdown (Max) V	Power (Max) mW	hFE (Min) @ 100mA, 1V	Package	Qualification
BC817-25/SNR	Nexperia USA Inc.	Obsolete	500	45	250	160	TO-236AB	—
BC817-25,215	NXP USA Inc.	Active	500	45	250	160	SOT-23	AEC-Q101
BC817-25,235	Nexperia USA Inc.	Active	500	45	250	160	TO-236AB	AEC-Q101
BC817-25-QR	Nexperia USA Inc.	Active	500	45	250	160	TO-236AB	AEC-Q101
BC817-25-QVL	Nexperia USA Inc.	Active	500	45	250	160	TO-236AB	AEC-Q101
BC817K-25R	Nexperia USA Inc.	Active	500	45	250	160	TO-236AB	AEC-Q100
BC817K-25VL	Nexperia USA Inc.	Active	500	45	250	160	TO-236AB	AEC-Q100
BCW66GLT1G	onsemi	Active	800	45	300	160	SOT-23-3	—
GSBC817-25	Good-Ark Semiconductor	Active	500	45	250	160	SOT-23	—

Engineering Selection Recommendations

Primary Recommendation: BC817-25,235

BC817-25,235 is the direct parametric equivalent manufactured by Nexperia USA Inc. in active production status. This part maintains identical electrical specifications to the BC817-25/SNR and is supplied in TO-236AB packaging with Tape & Reel (TR) configuration. The part carries AEC-Q101 automotive qualification, ROHS3 compliance, and unlimited moisture sensitivity level (MSL 1). Inventory availability is 100,040 pieces.

Secondary Recommendations: BC817-25-QR and BC817-25-QVL

Both BC817-25-QR and BC817-25-QVL are active Nexperia products in the BC817-Q automotive-qualified series. These parts provide identical electrical performance with AEC-Q101 qualification and TO-236AB packaging. BC817-25-QR inventory is 18,672 pieces; BC817-25-QVL inventory is 662 pieces.

Alternative Recommendation: BC817K-25R and BC817K-25VL

BC817K-25R and BC817K-25VL are active Nexperia products with AEC-Q100 automotive qualification. These parts maintain identical electrical specifications and TO-236AB packaging. BC817K-25R inventory is 3,764 pieces; BC817K-25VL inventory is 727 pieces.

Cross-Manufacturer Alternative: GSBC817-25

GSBC817-25 manufactured by Good-Ark Semiconductor is an active parametric equivalent meeting all electrical and mechanical requirements. This part is supplied in SOT-23 packaging with Tape & Reel configuration, ROHS3 compliance, and MSL 1 rating. Inventory availability is 7,071 pieces.

Higher Current Alternative: BCW66GLT1G

BCW66GLT1G manufactured by onsemi is an active parametric equivalent with enhanced current capability (800 mA maximum collector current versus 500 mA) and increased power dissipation (300 mW versus 250 mW). This part maintains 45 V breakdown voltage, 100 MHz transition frequency, and identical DC current gain specifications. BCW66GLT1G is supplied in SOT-23-3 packaging with ROHS3 compliance and MSL 1 rating. Inventory availability is 380,300 pieces.

Package Consideration: BC817-25,215

BC817-25,215 is an active NXP USA Inc. product with identical electrical specifications and AEC-Q101 qualification. This part is supplied in SOT-23 packaging rather than TO-236AB. Inventory availability is 1,000,400 pieces.

Frequently Asked Questions (FAQ)

Q: Can BC817-25,235 directly replace BC817-25/SNR in existing designs?

A: Yes. BC817-25,235 maintains identical electrical specifications including 45 V breakdown voltage, 500 mA maximum collector current, 250 mW power dissipation, 100 MHz transition frequency, and 160 minimum DC current gain. Both parts are supplied in TO-236AB packaging. The primary difference is product status: BC817-25/SNR is obsolete while BC817-25,235 is in active production.

Q: What is the difference between BC817-25,235 and BC817-25-QR?

A: Both parts are manufactured by Nexperia and maintain identical electrical specifications and TO-236AB packaging. BC817-25-QR is designated as part of the BC817-Q automotive-qualified series with AEC-Q101 certification. BC817-25,235 also carries AEC-Q101 qualification. Selection between these parts depends on inventory availability and specific procurement requirements.

Q: Can BCW66GLT1G be used as a substitute for BC817-25/SNR?

A: BCW66GLT1G is a parametric equivalent with enhanced electrical performance. It maintains the 45 V breakdown voltage and 100 MHz transition frequency of the BC817-25/SNR but provides higher maximum collector current (800 mA versus 500 mA) and greater power dissipation capability (300 mW versus 250 mW). BCW66GLT1G is supplied in SOT-23-3 packaging, which is mechanically compatible with TO-236-3 and SC-59 designations. This part is suitable for applications requiring higher current or power handling.

Q: What is the significance of the K designation in BC817K-25R and BC817K-25VL?

A: The K designation indicates automotive-qualified variants with AEC-Q100 certification. These parts maintain identical electrical specifications to standard BC817-25 variants but carry automotive-grade qualification. Selection of K-designated parts is appropriate for automotive applications requiring AEC-Q100 compliance.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed maintain ROHS3 compliance status. BC817-25/SNR, BC817-25,235, BC817-25-QR, BC817-25-QVL, BC817K-25R, BC817K-25VL, BCW66GLT1G, and GSBC817-25 are all ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: What packaging options are available for BC817-25 equivalents?

A: Substitute parts are available in two compatible package designations: TO-236AB (also designated TO-236-3 or SC-59) and SOT-23 (also designated SOT-23-3). BC817-25,235, BC817-25-QR, BC817-25-QVL, BC817K-25R, and BC817K-25VL are supplied in TO-236AB. BC817-25,215 and GSBC817-25 are supplied in SOT-23. BCW66GLT1G is supplied in SOT-23-3 (TO-236). All three package designations are mechanically compatible for surface mount applications.

Q: Which substitute part has the highest inventory availability?

A: BC817-25,215 manufactured by NXP USA Inc. has the highest inventory availability at 1,000,400 pieces. BCW66GLT1G manufactured by onsemi has the second highest availability at 380,300 pieces.

Q: Can GSBC817-25 be used in automotive applications?

A: GSBC817-25 manufactured by Good-Ark Semiconductor maintains identical electrical specifications to BC817-25/SNR and carries ROHS3 compliance. However, this part does not carry automotive qualification certifications (AEC-Q100 or AEC-Q101). Selection of GSBC817-25 is appropriate for non-automotive applications. For automotive applications, Nexperia-manufactured parts with AEC-Q100 or AEC-Q101 certification are recommended.

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