BSR33,115 Equivalent & Substitute Parts

Part Overview

The BSR33,115 is a PNP bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in the SOT-89 package. This component operates at a maximum collector current of 1 A with a collector-emitter breakdown voltage of 80 V, making it suitable for general-purpose switching and amplification circuits. The device is actively produced and carries automotive-grade qualification under AEC-Q100 standards.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit operation within broader electrical specifications. The parts listed below provide functional equivalence or enhanced performance characteristics while maintaining compatibility with the BSR33,115 footprint and electrical requirements.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	1	A
Voltage - Collector Emitter Breakdown (Max)	80	V
Vce Saturation (Max) @ Ib, Ic	500 mV @ 50 mA, 500 mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) Min @ Ic, Vce	100 @ 100 mA, 5 V	—
Power - Max	1.35	W
Frequency - Transition	100	MHz
Operating Temperature (TJ)	150	°C
Package / Case	TO-243AA	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Grade	Automotive	—
Qualification	AEC-Q100	—

Substitute Part Grouping Explanation

Substitution eligibility for the BSR33,115 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Transistor Type: PNP
Current - Collector (Ic) Max: 1 A (minimum requirement)
Voltage - Collector Emitter Breakdown: 80 V or greater
Vce Saturation: 500 mV @ 50 mA, 500 mA (or lower)
Current - Collector Cutoff: 100 nA or lower
DC Current Gain (hFE): 100 or greater at specified test conditions
Package / Case: TO-243AA
Mounting Type: Surface Mount

Acceptable Variation Parameters:

Power dissipation may exceed 1.35 W (enhanced thermal capability)
Transition frequency may exceed 100 MHz (improved speed performance)
Operating temperature range may be broader than 150°C maximum
Vce saturation test conditions may differ if saturation voltage remains at or below 500 mV

Substitute parts are grouped into two categories: Direct Equivalents (matching all critical parameters) and Similar Parts (meeting all mandatory criteria with enhanced or alternative specifications).

Parameter Comparison

Parameter	BSR33,115 (Nexperia)	BSR33TA (Diodes)	BCX5316-13R (Diodes)	BCX5316TA (Diodes)	BCX53TA (Diodes)	2SA1416S-TD-E (onsemi)	BCX5310H6327XTSA1 (Infineon)
Transistor Type	PNP	PNP	PNP	PNP	PNP	PNP	PNP
Ic (Max)	1 A	1 A	1 A	1 A	1 A	1 A	1 A
Vce Breakdown (Max)	80 V	80 V	80 V	80 V	80 V	100 V	80 V
Vce Saturation (Max)	500 mV	500 mV	500 mV	500 mV	500 mV	400 mV	500 mV
Icbo (Max)	100 nA	100 nA	100 nA	100 nA	100 nA	100 nA	100 nA
hFE (Min)	100	100	40	100	40	100	63
Power (Max)	1.35 W	1 W	1 W	1 W	1 W	500 mW	2 W
Frequency - Transition	100 MHz	100 MHz	150 MHz	150 MHz	150 MHz	120 MHz	125 MHz
Operating Temp (TJ)	150°C	-65 to 150°C	-65 to 150°C	-65 to 150°C	-65 to 150°C	150°C	150°C
Package	TO-243AA	TO-243AA	TO-243AA	TO-243AA	TO-243AA	TO-243AA	TO-243AA
RoHS Status	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3
Product Status	Active	Active	Active	Active	Active	Active	Last Time Buy
Grade	Automotive	—	—	—	—	—	Automotive
Qualification	AEC-Q100	—	—	—	—	—	AEC-Q101

Engineering Selection Recommendations

Direct Equivalent - Highest Compatibility:

BSR33TA (Diodes Incorporated) provides the closest functional match to the BSR33,115. This part maintains identical electrical specifications including 1 A collector current, 80 V breakdown voltage, 500 mV saturation voltage, and 100 MHz transition frequency. The extended operating temperature range (-65°C to 150°C) offers broader environmental tolerance. Product status is Active with full RoHS3 compliance. This part is suitable for direct substitution in applications where the original specification is required.

Enhanced Performance Alternatives:

BCX5316TA and BCX5316-13R (Diodes Incorporated) both offer 150 MHz transition frequency, representing a 50% improvement over the BSR33,115 baseline. Both maintain the 1 A collector current and 80 V breakdown voltage. BCX5316TA provides hFE of 100 (matching the original), while BCX5316-13R specifies hFE of 40. Both are Active products with extended temperature ranges. These parts are suitable when higher-speed performance is beneficial or when supply of the BSR33,115 is constrained.

BCX53TA (Diodes Incorporated) similarly offers 150 MHz transition frequency with 80 V breakdown and 1 A collector current. The hFE specification of 40 is lower than the original 100, but remains within acceptable limits for general-purpose switching applications. This part is Active with extended temperature range.

Higher Voltage Alternative:

2SA1416S-TD-E (onsemi) provides 100 V collector-emitter breakdown voltage, exceeding the 80 V specification of the BSR33,115. This part maintains 1 A collector current and 100 MHz transition frequency. The saturation voltage is 400 mV, which is superior to the 500 mV specification. However, the maximum power rating is 500 mW, which is lower than the 1.35 W rating of the original part. This substitution is appropriate for applications requiring higher voltage headroom but with lower power dissipation requirements.

Automotive-Grade Alternative:

BCX5310H6327XTSA1 (Infineon Technologies) carries automotive-grade qualification (AEC-Q101) and provides 2 W maximum power dissipation, the highest among all listed substitutes. The 125 MHz transition frequency exceeds the original specification. However, this part is designated Last Time Buy, indicating discontinued production. The hFE specification of 63 is lower than the original 100. This part is suitable only for applications where automotive qualification is mandatory and supply can be secured before end-of-life.

Selection Criteria Summary:

For direct replacement with maximum compatibility: BSR33TA
For improved speed performance: BCX5316TA or BCX5316-13R
For higher voltage applications: 2SA1416S-TD-E
For automotive applications with extended availability: BCX5310H6327XTSA1 (limited availability)

Frequently Asked Questions (FAQ)

Q: Can BSR33TA be used as a direct replacement for BSR33,115?

A: Yes. BSR33TA meets all mandatory electrical specifications: 1 A collector current, 80 V breakdown voltage, 500 mV saturation voltage, 100 MHz transition frequency, and 100 hFE minimum. Both parts use the TO-243AA package for surface mount applications. The extended operating temperature range of BSR33TA (-65°C to 150°C) provides additional environmental tolerance compared to the 150°C maximum of the original.

Q: What is the difference between BCX5316TA and BCX5316-13R?

A: Both parts share identical electrical specifications except for DC current gain. BCX5316TA specifies hFE of 100 @ 150 mA, 2V, while BCX5316-13R specifies hFE of 40 @ 150 mA, 2V. Both offer 150 MHz transition frequency and 1 W power dissipation. BCX5316TA is more closely matched to the original BSR33,115 hFE specification of 100. The packaging differs: BCX5316TA is supplied in Cut Tape and Digi-Reel format, while BCX5316-13R is supplied in Tape & Reel format.

Q: Why does 2SA1416S-TD-E have lower power rating than BSR33,115?

A: The 2SA1416S-TD-E is rated for 500 mW maximum power dissipation compared to 1.35 W for the BSR33,115. This reflects different thermal design and package thermal characteristics. The part is suitable for applications where power dissipation remains below 500 mW. Applications requiring sustained power dissipation above 500 mW should not use this substitute.

Q: Is BCX5310H6327XTSA1 recommended for new designs?

A: No. This part carries Last Time Buy status, indicating discontinued production. While it offers automotive-grade qualification (AEC-Q101) and enhanced power rating (2 W), supply is limited and will eventually cease. This part should be used only for legacy product support or when existing inventory is available and automotive qualification is mandatory.

Q: Can I use BCX53TA in place of BSR33,115 if hFE of 40 is acceptable?

A: Yes, if the application circuit design accommodates hFE of 40. BCX53TA meets all other mandatory specifications: 1 A collector current, 80 V breakdown voltage, 500 mV saturation voltage, and 150 MHz transition frequency. The lower hFE may require increased base drive current in switching applications. Verify that base current availability and circuit design support this lower gain specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status, matching the environmental compliance of the BSR33,115. All parts are also REACH Unaffected and carry EAR99 export classification.

Q: What is the significance of the extended temperature range in BCX5316TA and BCX5316-13R?

A: The extended operating temperature range (-65°C to 150°C) provides operation capability at lower temperatures compared to the BSR33,115 specification of 150°C maximum. This allows use in applications requiring cold-temperature operation or in environments with wider temperature extremes. The upper temperature limit remains identical at 150°C.

Q: Can I substitute based on transition frequency alone?

A: No. Transition frequency is one parameter among many. All mandatory parameters must be satisfied: collector current, breakdown voltage, saturation voltage, collector cutoff current, DC current gain, and package type. Substitution based on a single parameter may result in circuit malfunction or reliability issues.

Q: What inventory levels are available for each substitute?

A: BSR33TA: 15,785 pcs; BCX5316-13R: 4,783 pcs; BCX5316TA: 72,100 pcs; BCX53TA: 17,300 pcs; 2SA1416S-TD-E: 3,200 pcs; BCX5310H6327XTSA1: 981 pcs. BCX5316TA offers the highest inventory availability among all substitutes.

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