BCX53H6327XTSA1 Equivalent & Substitute Parts

Part Overview

The BCX53H6327XTSA1 is a PNP bipolar junction transistor manufactured by Infineon Technologies, rated for 80 V collector-emitter breakdown voltage and 1 A maximum collector current. This surface mount device is packaged in SOT-89 (TO-243AA) and is qualified to AEC-Q101 automotive standards. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring PNP transistor functionality within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	80	V
Current - Collector (Ic) (Max)	1	A
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA	—
Current - Collector Cutoff (Max)	100nA	—
DC Current Gain (hFE) (Min) @ Ic, Vce	40 @ 150mA, 2V	—
Power - Max	2	W
Frequency - Transition	125	MHz
Operating Temperature (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BCX53H6327XTSA1 are selected based on strict electrical and mechanical compatibility criteria. The following parameters define substitution eligibility:

Critical Parameters (Must Match or Exceed):

Transistor Type: PNP
Voltage - Collector Emitter Breakdown (Max): 80 V minimum
Current - Collector (Ic) (Max): 1 A minimum
Vce Saturation: 500mV @ 50mA, 500mA
Current - Collector Cutoff (Max): 100nA maximum
DC Current Gain (hFE) (Min): 40 @ 150mA, 2V minimum
Operating Temperature: 150°C maximum junction temperature
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Package Compatibility: Substitutes must use either TO-243AA (SOT-89) or equivalent surface mount packages that maintain pinout compatibility with the original design.

Three qualified substitute parts meet these criteria:

BCX53-16,115 (Nexperia USA Inc.) — Identical electrical specifications with enhanced DC current gain (100 vs. 40) and higher transition frequency (145MHz vs. 125MHz). Same package (SOT-89). Active product status with AEC-Q100 automotive qualification.
BCX5316TA (Diodes Incorporated) — Meets all electrical requirements with 1 A collector current, 80 V breakdown voltage, and enhanced transition frequency (150MHz). SOT-89-3 package. Active product status with extended operating temperature range.
BCP53T1G (onsemi) — Exceeds collector current rating (1.5 A vs. 1 A) and power dissipation (1.5 W vs. 2 W). Different package (SOT-223/TO-261) requires PCB layout modification. Active product status with extended operating temperature range.

Parameter Comparison

Parameter	BCX53H6327XTSA1 (Main)	BCX53-16,115	BCX5316TA	BCP53T1G
Manufacturer	Infineon Technologies	Nexperia USA Inc.	Diodes Incorporated	onsemi
Transistor Type	PNP	PNP	PNP	PNP
Voltage - Collector Emitter Breakdown (Max)	80 V	80 V	80 V	80 V
Current - Collector (Ic) (Max)	1 A	1 A	1 A	1.5 A
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA	500mV @ 50mA, 500mA
Current - Collector Cutoff (Max)	100nA	100nA	100nA	100nA
DC Current Gain (hFE) (Min) @ Ic, Vce	40 @ 150mA, 2V	100 @ 150mA, 2V	100 @ 150mA, 2V	40 @ 150mA, 2V
Power - Max	2 W	1.3 W	1 W	1.5 W
Frequency - Transition	125 MHz	145 MHz	150 MHz	50 MHz
Operating Temperature (Max)	150°C	150°C	150°C	150°C
Package / Case	TO-243AA (SOT-89)	TO-243AA (SOT-89)	TO-243AA (SOT-89-3)	TO-261-4 (SOT-223)
Product Status	Last Time Buy	Active	Active	Active
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

BCX53-16,115 (Nexperia USA Inc.) is the primary recommended substitute. This part maintains identical electrical specifications and package form factor (SOT-89/TO-243AA) as the BCX53H6327XTSA1. The enhanced DC current gain (100 vs. 40) and higher transition frequency (145MHz vs. 125MHz) provide improved performance margins without requiring circuit redesign. Active product status ensures long-term availability. AEC-Q100 automotive qualification supports applications requiring automotive-grade components.

BCX5316TA (Diodes Incorporated) is a secondary substitute option. This part meets all electrical requirements and offers the highest transition frequency (150MHz) among substitutes. The SOT-89-3 package maintains mechanical compatibility with the original TO-243AA footprint. Active product status and extended operating temperature range (-65°C to 150°C) provide design flexibility. Selection of this part does not require PCB layout modification.

BCP53T1G (onsemi) is suitable only when higher collector current capacity (1.5 A) is required. The SOT-223 (TO-261) package differs from the original SOT-89, requiring PCB layout modification and potential circuit board redesign. The lower transition frequency (50MHz vs. 125MHz) may limit high-frequency applications. This substitute is appropriate for designs where package change is acceptable and enhanced current handling is beneficial.

All three substitutes comply with ROHS3 and maintain MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage practices.

Frequently Asked Questions (FAQ)

Q: Can BCX53-16,115 be used as a direct replacement for BCX53H6327XTSA1?

A: Yes. BCX53-16,115 maintains identical collector current (1 A), breakdown voltage (80 V), saturation voltage (500mV @ 50mA, 500mA), and package form factor (SOT-89/TO-243AA). The enhanced DC current gain (100 vs. 40) and transition frequency (145MHz vs. 125MHz) represent performance improvements that do not require circuit modification. No PCB layout changes are necessary.

Q: What is the difference between BCX5316TA and BCX53-16,115?

A: Both parts meet the electrical requirements of the original BCX53H6327XTSA1. BCX5316TA offers the highest transition frequency (150MHz) and extended operating temperature range (-65°C to 150°C). BCX53-16,115 provides higher DC current gain (100) and is qualified to AEC-Q100 automotive standards. Both use SOT-89 packages compatible with the original footprint.

Q: Why is BCP53T1G listed as a substitute if it uses a different package?

A: BCP53T1G meets all critical electrical parameters (80 V breakdown, 1 A minimum collector current, 500mV saturation voltage, 100nA cutoff current, 40 minimum DC current gain). The SOT-223 package differs from SOT-89, requiring PCB layout modification. This substitute is appropriate when higher collector current capacity (1.5 A) is required and package change is acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. BCX53-16,115, BCX5316TA, and BCP53T1G are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, matching the environmental compliance profile of the original BCX53H6327XTSA1.

Q: What is the significance of the BCX53H6327XTSA1 being in Last Time Buy status?

A: Last Time Buy status indicates that Infineon Technologies has discontinued production of this part. Existing inventory may be available for a limited time, but long-term supply cannot be guaranteed. Transitioning to an active substitute part (BCX53-16,115, BCX5316TA, or BCP53T1G) ensures design continuity and supply chain reliability for future production runs.

Q: Can I use BCP53T1G in a design originally specified for BCX53H6327XTSA1 without circuit changes?

A: BCP53T1G meets all electrical specifications but uses a different package (SOT-223 vs. SOT-89). PCB layout modification is required to accommodate the different pin configuration and footprint. Circuit operation remains compatible, but physical board redesign is necessary.

Q: Which substitute offers the best high-frequency performance?

A: BCX5316TA provides the highest transition frequency at 150MHz, compared to 125MHz for the original BCX53H6327XTSA1 and 145MHz for BCX53-16,115. BCP53T1G has the lowest transition frequency at 50MHz and is not suitable for high-frequency applications.

Q: Are there any power dissipation differences between the substitutes?

A: Yes. The original BCX53H6327XTSA1 is rated for 2 W maximum power dissipation. BCX53-16,115 is rated for 1.3 W, BCX5316TA for 1 W, and BCP53T1G for 1.5 W. In applications approaching the 2 W limit, thermal management considerations may apply when using substitutes with lower power ratings.

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