DTA114TCA-TP Equivalent & Substitute Parts

Part Overview

The DTA114TCA-TP is a pre-biased PNP bipolar junction transistor (BJT) manufactured by Micro Commercial Co, designed for surface mount applications in the SOT-23 package. This component operates at 50 V maximum collector-emitter breakdown voltage with a maximum collector current of 100 mA and a transition frequency of 250 MHz. The device is actively produced and RoHS3 compliant, making it suitable for modern electronic applications requiring compact switching or amplification circuits with integrated base biasing resistors.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or when specific manufacturer preferences align with system qualification standards.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP - Pre-Biased	—
Current - Collector (Ic) (Max)	100	mA
Voltage - Collector Emitter Breakdown (Max)	50	V
Resistor - Base (R1)	10	kOhms
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 1mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	300	mV
Current - Collector Cutoff (Max)	500	nA
Frequency - Transition	250	MHz
Power - Max	200	mW
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the DTA114TCA-TP are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes maintain identical or functionally equivalent electrical specifications across all critical parameters: maximum collector current (100 mA), collector-emitter breakdown voltage (50 V), base resistor value (10 kOhms), DC current gain (100 @ 1mA, 5V), transition frequency (250 MHz), and power dissipation (200 mW). These parts are interchangeable in circuit designs without modification.

Similar Substitutes share the same voltage rating, package form factor, and mounting technology but differ in one or more electrical parameters such as base resistor value, collector current rating, transition frequency, or DC current gain. Selection of similar substitutes requires circuit-level evaluation to confirm compatibility with the intended application.

The following parameters determine substitution eligibility:

Voltage - Collector Emitter Breakdown (Max): 50 V (required)
Package / Case: TO-236-3, SC-59, SOT-23-3 (required)
Mounting Type: Surface Mount (required)
Transistor Type: PNP - Pre-Biased (required)

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce(br) V	R1 kOhms	hFE @ 1mA, 5V	Vce Sat mV	fT MHz	P(Max) mW	Package	Packaging Type
DTA114TCA-TP	Micro Commercial Co	100	50	10	100	300	250	200	SOT-23-3	Tape & Reel
DDTA114TCA-7-F	Diodes Incorporated	100	50	10	100	300	250	200	SOT-23-3	Tape & Reel
DTA114TKAT146	Rohm Semiconductor	100	50	10	100	300	250	200	SOT-23-3	Cut Tape & Digi-Reel
DTA143TKAT146	Rohm Semiconductor	100	50	4.7	100	300	250	200	SOT-23-3	Cut Tape & Digi-Reel
DTB114GKT146	Rohm Semiconductor	500	50	10 (R2)	56 @ 50mA, 5V	300	200	200	SOT-23-3	Cut Tape & Digi-Reel
MMUN2115LT1G	onsemi	100	50	10	160 @ 5mA, 10V	250	—	400	SOT-23-3	Tape & Reel
PDTA114TT,215	Nexperia USA Inc.	100	50	10	200 @ 1mA, 5V	150	—	250	SOT-23-3	Tape & Reel

Engineering Selection Recommendations

Direct Substitutes (Electrically Equivalent):

The DDTA114TCA-7-F (Diodes Incorporated) and DTA114TKAT146 (Rohm Semiconductor) are direct electrical equivalents to the DTA114TCA-TP. Both maintain identical maximum collector current (100 mA), collector-emitter breakdown voltage (50 V), base resistor value (10 kOhms), DC current gain (100 @ 1mA, 5V), and transition frequency (250 MHz). All three parts are RoHS3 compliant with MSL 1 rating. Selection between these direct substitutes is based on packaging preference (Tape & Reel versus Cut Tape & Digi-Reel) and manufacturer availability.

Similar Substitutes (Application-Dependent):

The DTA143TKAT146 (Rohm Semiconductor) differs from the main part in base resistor value (4.7 kOhms versus 10 kOhms). This lower base resistance results in faster switching response and higher base current drive capability. This part is suitable for applications requiring increased switching speed or where the lower base impedance provides circuit design advantages.

The DTB114GKT146 (Rohm Semiconductor) is rated for significantly higher collector current (500 mA versus 100 mA) and features an emitter-base resistor (R2) of 10 kOhms instead of a base resistor. The DC current gain is lower (56 @ 50mA, 5V) and transition frequency is reduced to 200 MHz. This part is applicable only in designs requiring higher current handling capability.

The MMUN2115LT1G (onsemi) maintains the 100 mA collector current and 10 kOhms base resistor but offers higher power dissipation capability (400 mW versus 200 mW) and improved DC current gain (160 @ 5mA, 10V). This part is suitable for applications with elevated thermal requirements or where higher current gain provides circuit optimization benefits.

The PDTA114TT,215 (Nexperia USA Inc.) is qualified to AEC-Q100 automotive standards and features improved saturation voltage (150 mV versus 300 mV) and lower collector cutoff current (100 nA versus 500 nA). This part is specified for automotive applications requiring enhanced reliability and performance characteristics.

All substitute parts maintain RoHS3 compliance, MSL 1 rating, and surface mount SOT-23-3 package compatibility.

Frequently Asked Questions (FAQ)

Q: Can the DDTA114TCA-7-F be used as a direct replacement for the DTA114TCA-TP?

A: Yes. The DDTA114TCA-7-F is a direct electrical equivalent with identical maximum collector current (100 mA), collector-emitter breakdown voltage (50 V), base resistor (10 kOhms), DC current gain (100 @ 1mA, 5V), and transition frequency (250 MHz). Both are RoHS3 compliant with MSL 1 rating and SOT-23-3 package compatibility. The primary difference is packaging format (Tape & Reel versus Tape & Reel).

Q: What is the difference between the DTA114TKAT146 and DTA114TCA-TP?

A: The DTA114TKAT146 is electrically equivalent to the DTA114TCA-TP across all critical parameters. The difference is packaging format: DTA114TKAT146 is supplied in Cut Tape & Digi-Reel format, while DTA114TCA-TP is supplied in standard Tape & Reel format. Both maintain identical electrical performance.

Q: When should the DTA143TKAT146 be selected instead of the DTA114TCA-TP?

A: The DTA143TKAT146 features a lower base resistor value (4.7 kOhms versus 10 kOhms). This configuration provides faster switching response and higher base current drive capability. Selection of DTA143TKAT146 is appropriate for circuit designs where increased switching speed or enhanced base drive current is required. Circuit-level evaluation is necessary to confirm compatibility.

Q: Is the DTB114GKT146 a suitable substitute for the DTA114TCA-TP?

A: The DTB114GKT146 is not a direct substitute. While it maintains the 50 V collector-emitter breakdown voltage and SOT-23-3 package, it is rated for 500 mA maximum collector current (versus 100 mA) and features different biasing architecture with an emitter-base resistor. The DC current gain is lower (56 @ 50mA, 5V) and transition frequency is reduced to 200 MHz. This part is applicable only in designs specifically requiring higher current handling capability.

Q: What are the advantages of the MMUN2115LT1G over the DTA114TCA-TP?

A: The MMUN2115LT1G maintains the same 100 mA collector current and 10 kOhms base resistor but offers higher power dissipation capability (400 mW versus 200 mW) and improved DC current gain (160 @ 5mA, 10V). These characteristics make it suitable for applications with elevated thermal requirements or where higher current gain provides circuit optimization benefits.

Q: Is the PDTA114TT,215 suitable for non-automotive applications?

A: Yes. The PDTA114TT,215 is qualified to AEC-Q100 automotive standards but is functionally suitable for non-automotive applications. It provides improved saturation voltage (150 mV versus 300 mV) and lower collector cutoff current (100 nA versus 500 nA) compared to the DTA114TCA-TP, making it a performance-enhanced option for any application where these characteristics provide design benefits.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the compliance profile of the DTA114TCA-TP.

Q: Can substitute parts be mixed within a single production run?

A: Direct substitutes (DDTA114TCA-7-F and DTA114TKAT146) are electrically interchangeable and can be used interchangeably. Similar substitutes (DTA143TKAT146, DTB114GKT146, MMUN2115LT1G, PDTA114TT,215) differ in electrical characteristics and should not be mixed within a single design without circuit-level verification of compatibility.

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