BCX53-10-TP Equivalent & Substitute Parts

Part Overview

The BCX53-10-TP is a PNP bipolar junction transistor manufactured by Micro Commercial Co, rated for 80V collector-emitter breakdown voltage and 1A maximum collector current in a surface mount SOT-89 package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The BCX53-10-TP serves in general-purpose switching and amplification applications requiring PNP transistor functionality within the specified voltage and current ratings.

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	500mV @ 50mA, 500mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	63 @ 150mA, 2V	—
Power - Max	500	mW
Frequency - Transition	50	MHz
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
Supplier Device Package	SOT-89	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BCX53-10-TP is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Transistor Type: PNP
Current - Collector (Ic) (Max): 1 A
Voltage - Collector Emitter Breakdown (Max): 80 V
Vce Saturation (Max) @ Ib, Ic: 500mV @ 50mA, 500mA
Current - Collector Cutoff (Max): 100nA (ICBO)
Power - Max: 500 mW (minimum)
Frequency - Transition: 50 MHz (minimum)
Operating Temperature: -55°C to 150°C (TJ)
Mounting Type: Surface Mount
Package / Case: TO-243AA
Supplier Device Package: SOT-89 or equivalent

Substitution Categories:

Direct Equivalents (Identical Electrical Specifications): Parts meeting all primary criteria with matching DC Current Gain (hFE) minimum of 63 @ 150mA, 2V and identical power dissipation of 500 mW.

Parametric Equivalents (Enhanced Specifications): Parts exceeding minimum specifications in power dissipation, frequency response, or DC current gain while maintaining all primary electrical parameters. These parts are electrically compatible and functionally superior.

Cross-Manufacturer Equivalents: Parts from alternative manufacturers meeting identical electrical and mechanical specifications, enabling supply chain flexibility.

Parameter Comparison

Part Number	Manufacturer	Ic (Max)	Vce(BR)	hFE (Min)	Power (Max)	Frequency	Package	Status
BCX53-10-TP	Micro Commercial Co	1 A	80 V	63	500 mW	50 MHz	SOT-89	Obsolete
BCX53-TP	Micro Commercial Co	1 A	80 V	63	500 mW	50 MHz	SOT-89	Active
BCX53-16-TP	Micro Commercial Co	1 A	80 V	100	500 mW	50 MHz	SOT-89	Active
BCX53,146	Nexperia USA Inc.	1 A	80 V	63	1.3 W	145 MHz	SOT-89	Active
BCX53-16,115	Nexperia USA Inc.	1 A	80 V	100	1.3 W	145 MHz	SOT-89	Active
BCX5310H6327XTSA1	Infineon Technologies	1 A	80 V	63	2 W	125 MHz	SOT-89	Last Time Buy
GSBCX53	Good-Ark Semiconductor	1 A	80 V	63	500 mW	50 MHz	SOT-89	Active
GSBCX53-16	Good-Ark Semiconductor	1 A	80 V	63	500 mW	50 MHz	SOT-89	Active

Engineering Selection Recommendations

Primary Recommendation: BCX53-TP

The BCX53-TP from Micro Commercial Co is the direct equivalent replacement for the obsolete BCX53-10-TP. This part maintains identical electrical specifications and is currently in active production status with high inventory availability (19,951 pieces). Selection of BCX53-TP ensures design continuity with no circuit modifications required.

Secondary Recommendation: BCX53-16-TP

The BCX53-16-TP offers enhanced DC current gain (hFE minimum of 100 versus 63) while maintaining all other electrical parameters. This part is suitable for applications where higher current gain provides design margin. Active production status and substantial inventory (1,809 pieces) support production continuity.

Enhanced Performance Alternative: BCX53,146 (Nexperia USA Inc.)

This part exceeds the BCX53-10-TP specifications with 1.3W power dissipation and 145MHz transition frequency. It carries automotive-grade qualification (AEC-Q100) and active production status. Selection is appropriate for applications requiring enhanced thermal performance or higher-frequency operation within the same voltage and current envelope.

Enhanced Performance Alternative: BCX53-16,115 (Nexperia USA Inc.)

This part combines enhanced DC current gain (hFE minimum of 100), 1.3W power dissipation, and 145MHz transition frequency. Automotive-grade qualification (AEC-Q100) and extensive inventory (1,000,200 pieces) support high-volume production. Selection is appropriate for demanding applications requiring superior performance margins.

Cross-Manufacturer Equivalent: GSBCX53 (Good-Ark Semiconductor)

The GSBCX53 provides parametric equivalence with identical electrical specifications to the BCX53-10-TP. Active production status and ROHS3 compliance support supply chain diversification. This part is suitable for applications where cross-manufacturer sourcing is required.

Automotive-Grade Alternative: BCX5310H6327XTSA1 (Infineon Technologies)

This part offers 2W power dissipation and 125MHz transition frequency with automotive-grade qualification (AEC-Q101). Last Time Buy status indicates limited future availability. Selection is appropriate for automotive applications requiring enhanced thermal performance, with procurement planning required.

Frequently Asked Questions (FAQ)

Q: Can BCX53-TP directly replace BCX53-10-TP without circuit modifications?

A: Yes. The BCX53-TP is a direct parametric equivalent with identical electrical specifications, including collector current rating (1A), breakdown voltage (80V), saturation voltage (500mV @ 50mA, 500mA), DC current gain (63 @ 150mA, 2V), power dissipation (500mW), and transition frequency (50MHz). No circuit modifications are required.

Q: What is the difference between BCX53-16-TP and BCX53-TP?

A: The BCX53-16-TP has a higher minimum DC current gain (hFE minimum of 100 @ 150mA, 2V) compared to the BCX53-TP (hFE minimum of 63 @ 150mA, 2V). All other electrical parameters remain identical. The higher current gain provides additional design margin in current-gain-dependent applications.

Q: Are Nexperia BCX53,146 and BCX53-16,115 suitable replacements?

A: Yes, both Nexperia parts are suitable replacements. They maintain the required 1A collector current and 80V breakdown voltage. Both exceed the BCX53-10-TP specifications with 1.3W power dissipation (versus 500mW) and 145MHz transition frequency (versus 50MHz). Automotive-grade qualification (AEC-Q100) is an additional benefit for applications requiring this certification.

Q: What is the difference between SOT-89 and TO-243AA package designations?

A: SOT-89 is the supplier device package designation, while TO-243AA is the standardized package case designation. Both refer to the same physical package form factor. All listed substitute parts use the same SOT-89/TO-243AA package, ensuring mechanical and electrical compatibility.

Q: Can I use GSBCX53 from Good-Ark Semiconductor as a substitute?

A: Yes. The GSBCX53 is a parametric equivalent with identical electrical specifications to the BCX53-10-TP. It provides cross-manufacturer sourcing flexibility while maintaining all required electrical parameters, including 1A collector current, 80V breakdown voltage, 500mV saturation voltage, 63 minimum DC current gain, 500mW power dissipation, and 50MHz transition frequency.

Q: Why is BCX5310H6327XTSA1 marked as Last Time Buy?

A: Last Time Buy status indicates that the manufacturer (Infineon Technologies) has announced end-of-life for this part. While currently available, future procurement may be limited. This part is suitable for applications requiring its specific performance characteristics (2W power dissipation, 125MHz transition frequency, AEC-Q101 automotive qualification), but long-term supply planning is necessary.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification, meeting environmental and regulatory requirements for lead-free manufacturing and restricted substance limitations.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All listed parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These parts do not require special moisture-controlled storage or handling procedures.

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