PDTA114YU,115 Pre-Biased PNP Transistor Equivalent & Substitute Parts

Part Overview

The PDTA114YU,115 is an active pre-biased PNP bipolar junction transistor (BJT) manufactured by Nexperia USA Inc. in SOT-323 surface mount packaging. This component is designed for automotive-grade applications with AEC-Q100 qualification and operates at a maximum collector-emitter breakdown voltage of 50 V with a maximum collector current of 100 mA. The part is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1) and is currently in active production status with 1274 units in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative suppliers are required for supply chain continuity, or when design flexibility permits selection from multiple qualified manufacturers while maintaining electrical and mechanical compatibility.

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
Resistor - Emitter Base (R2)	47	kOhms
DC Current Gain (hFE) Min @ Ic, Vce	100 @ 5mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	100mV @ 250µA, 5mA	—
Current - Collector Cutoff (Max)	1	µA
Power - Max	200	mW
Package / Case	SC-70, SOT-323	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q100	—
RoHS Status	ROHS3 Compliant	—
MSL	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the PDTA114YU,115 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Transistor type: PNP - Pre-Biased
Maximum collector current: 100 mA
Maximum collector-emitter breakdown voltage: 50 V
Base resistor (R1): 10 kOhms
Emitter-base resistor (R2): 47 kOhms (where specified)
Package type: SOT-323 or equivalent surface mount package
Mounting type: Surface Mount
Automotive grade qualification (AEC-Q100 or AEC-Q101)
RoHS3 compliance

Acceptable Variations:

DC current gain (hFE) specifications may vary within the pre-biased transistor design range
Vce saturation voltage may differ within acceptable operating margins
Collector cutoff current (ICBO) specifications may vary
Power dissipation ratings may exceed the minimum requirement
Transition frequency specifications may exceed the minimum requirement

Substitute parts are grouped by package type (SOT-323, SOT-523, SOT-23-3, UMT3) and by the presence or absence of the emitter-base resistor (R2) specification. Parts with identical R1 and R2 values are direct functional equivalents. Parts with different R2 values or missing R2 specifications represent alternative biasing configurations and require circuit-level evaluation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Ic (Max) mA	Vce Breakdown (Max) V	R1 kOhms	R2 kOhms	hFE Min @ Ic, Vce	Vce Sat (Max) @ Ib, Ic	Power (Max) mW	Package	AEC Qualification
PDTA114YU,115	Nexperia USA Inc.	100	50	10	47	100 @ 5mA, 5V	100mV @ 250µA, 5mA	200	SOT-323	AEC-Q100
ADTA114EUAQ-13	Diodes Incorporated	100	50	10	10	—	—	330	SOT-323	AEC-Q101
ADTA114EUAQ-7	Diodes Incorporated	100	50	10	10	—	—	330	SOT-323	AEC-Q101
DDTA114GE-7-F	Diodes Incorporated	100	50	—	10	30 @ 5mA, 5V	300mV @ 500µA, 10mA	150	SOT-523	—
DDTA114TCA-7-F	Diodes Incorporated	100	50	10	—	100 @ 1mA, 5V	300mV @ 100µA, 1mA	200	SOT-23-3	—
DDTA114TE-7-F	Diodes Incorporated	100	50	10	—	100 @ 1mA, 5V	300mV @ 100µA, 1mA	150	SOT-523	—
DDTA114TUA-7-F	Diodes Incorporated	100	50	10	—	100 @ 1mA, 5V	300mV @ 100µA, 1mA	200	SOT-323	—
DTA114YUAT106	Rohm Semiconductor	100	50	10	47	68 @ 5mA, 5V	300mV @ 250µA, 5mA	200	SOT-323	—
MUN5111T1G	onsemi	100	50	10	10	35 @ 5mA, 10V	250mV @ 300µA, 10mA	202	SOT-323	—
MUN5114T1G	onsemi	100	50	10	47	80 @ 5mA, 10V	250mV @ 300µA, 10mA	202	SOT-323	—
SMUN5114T1G	onsemi	100	50	10	47	80 @ 5mA, 10V	250mV @ 300µA, 10mA	202	SOT-323	—

Engineering Selection Recommendations

Direct Equivalents (SOT-323 Package, R1=10kΩ, R2=47kΩ):

The following parts maintain identical base and emitter-base resistor values and are packaged in SOT-323, making them direct functional equivalents for the PDTA114YU,115:

DTA114YUAT106 (Rohm Semiconductor): Identical R1 and R2 configuration. Automotive-grade component with 647,100 units in stock. DC current gain of 68 @ 5mA, 5V differs from the primary part specification of 100 @ 5mA, 5V but remains within pre-biased transistor design tolerances.
MUN5114T1G (onsemi): Identical R1 and R2 configuration in SOT-323 package. DC current gain of 80 @ 5mA, 10V and Vce saturation of 250mV @ 300µA, 10mA. 4,300 units in stock.
SMUN5114T1G (onsemi): Identical R1 and R2 configuration in SOT-323 package. Specifications match MUN5114T1G. 26,100 units in stock.

Alternative Configurations (SOT-323 Package, R1=10kΩ, R2=10kΩ):

The following parts feature a different emitter-base resistor value (10kΩ instead of 47kΩ), resulting in altered biasing characteristics:

ADTA114EUAQ-13 (Diodes Incorporated): SOT-323 package with R1=10kΩ, R2=10kΩ. AEC-Q101 qualified. 330 mW power rating exceeds the primary part. 1,080 units in stock.
ADTA114EUAQ-7 (Diodes Incorporated): SOT-323 package with R1=10kΩ, R2=10kΩ. AEC-Q101 qualified. 330 mW power rating. 3,885 units in stock.
MUN5111T1G (onsemi): SOT-323 package with R1=10kΩ, R2=10kΩ. DC current gain of 35 @ 5mA, 10V. 5,300 units in stock.

Alternative Package Configurations (SOT-523, SOT-23-3):

DDTA114TE-7-F (Diodes Incorporated): SOT-523 package with R1=10kΩ. 150 mW power rating. 53,180 units in stock.
DDTA114TUA-7-F (Diodes Incorporated): SOT-323 package with R1=10kΩ. 200 mW power rating. 38,100 units in stock.
DDTA114TCA-7-F (Diodes Incorporated): SOT-23-3 package with R1=10kΩ. 200 mW power rating. 6,070 units in stock.
DDTA114GE-7-F (Diodes Incorporated): SOT-523 package with R2=10kΩ. 150 mW power rating. 720 units in stock.

All substitute parts maintain the 100 mA maximum collector current and 50 V collector-emitter breakdown voltage specifications. Selection should be based on package availability, supply chain requirements, and circuit-level compatibility with the specific biasing configuration.

Frequently Asked Questions (FAQ)

Q: Can ADTA114EUAQ-13 or ADTA114EUAQ-7 be used as direct replacements for PDTA114YU,115?

A: These parts are functionally compatible in SOT-323 packaging and maintain the same maximum ratings (100 mA, 50 V). However, the emitter-base resistor differs (10kΩ vs. 47kΩ), which alters the biasing network. Circuit-level evaluation is required to confirm compatibility with the specific application.

Q: What is the difference between DTA114YUAT106 and PDTA114YU,115?

A: Both parts feature identical R1 (10kΩ) and R2 (47kΩ) resistor values and are packaged in SOT-323. The primary difference is the DC current gain specification: DTA114YUAT106 specifies 68 @ 5mA, 5V while PDTA114YU,115 specifies 100 @ 5mA, 5V. Both values fall within acceptable pre-biased transistor design ranges. DTA114YUAT106 is manufactured by Rohm Semiconductor and is available in significantly higher quantities (647,100 units).

Q: Why do some substitute parts have different package types (SOT-523, SOT-23-3)?

A: Package type affects board layout, thermal performance, and PCB footprint. SOT-323 (SC-70) is the smallest package. SOT-523 is slightly larger. SOT-23-3 (TO-236-3) is the largest. Selection depends on available board space and thermal requirements. Footprint conversion is required when changing package types.

Q: Are all substitute parts automotive-grade?

A: The primary part PDTA114YU,115 carries AEC-Q100 qualification. Among the listed substitutes, ADTA114EUAQ-13 and ADTA114EUAQ-7 carry AEC-Q101 qualification. Other substitutes do not list automotive qualification in the provided specifications. Automotive applications should prioritize AEC-qualified parts.

Q: What does the R1 and R2 resistor specification mean in a pre-biased transistor?

A: Pre-biased transistors integrate internal resistors to establish a biasing network. R1 is the base resistor, and R2 is the emitter-base resistor. These resistors determine the transistor's switching characteristics and quiescent current. Different R1 and R2 values produce different biasing conditions and must be evaluated for circuit compatibility.

Q: Can MUN5111T1G replace MUN5114T1G?

A: Both parts are manufactured by onsemi in SOT-323 packaging with identical maximum ratings. The primary difference is the emitter-base resistor: MUN5111T1G has R2=10kΩ while MUN5114T1G has R2=47kΩ. The DC current gain also differs (35 vs. 80 @ 5mA). These are not direct equivalents and require circuit-level evaluation.

Q: What is the significance of the 250 MHz transition frequency listed for some substitutes?

A: Transition frequency (fT) indicates the frequency at which the transistor's current gain drops to unity. Higher transition frequencies indicate faster switching capability. The primary part does not list this specification. Substitutes with 250 MHz transition frequency provide enhanced high-frequency performance but are not required for applications where this specification is not critical.

Q: Is RoHS3 compliance maintained across all substitute parts?

A: All listed substitute parts are RoHS3 compliant. All parts also maintain MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture handling requirements during storage or assembly.

Q: Which substitute offers the highest inventory availability?

A: DTA114YUAT106 (Rohm Semiconductor) offers the highest inventory with 647,100 units in stock, followed by DDTA114TE-7-F (Diodes Incorporated) with 53,180 units.

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