Equivalent & Substitute Parts for PDTC143EEF,115

Part Overview

PDTC143EEF,115 is an NPN pre-biased bipolar junction transistor (BJT) in the SC-89 surface mount package, manufactured by NXP USA Inc. It features a collector-emitter voltage of 50 V, a maximum collector current of 100 mA, and integrated biasing resistors (4.7 kΩ each for base and emitter-base). The part is classified as obsolete, necessitating the selection of suitable alternative models with equivalent electrical and mechanical characteristics to ensure compatibility in replacement scenarios.

Key Parameters

Manufacturer Part Number	Transistor Type	Collector-Emitter Voltage (Vce)	Collector Current (Ic Max)	Base Resistor (R1)	Emitter-Base Resistor (R2)	DC Current Gain (hFE) (Min)	Vce Saturation (Max)	Collector Cutoff Current (Max)	Power Dissipation (Max)	Mounting Type	Package / Case	RoHS Compliance	Product Status
PDTC143EEF,115	NPN - Pre-Biased	50 V	100 mA	4.7 kΩ	4.7 kΩ	30 @ 10mA, 5V	150mV @ 500µA, 10mA	1µA	250 mW	Surface Mount	SC-89, SOT-490	ROHS3	Obsolete

Substitute Part Grouping Explanation

Substitution is strictly based on matching the following key parameters: transistor type (NPN pre-biased), collector-emitter voltage (50 V), maximum collector current (100 mA), both bias resistors (4.7 kΩ), mounting type (surface mount), and RoHS compliance status. Package equivalence is considered with industry-standard miniature outlines. Only substitute parts meeting all these criteria, as documented in the input data, are included.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Transistor Type	Collector-Emitter Voltage (Vce)	Collector Current (Ic Max)	Base Resistor (R1)	Emitter-Base Resistor (R2)	DC Current Gain (hFE) (Min)	Vce Saturation (Max)	Collector Cutoff Current (Max)	Power Dissipation (Max)	Mounting Type	Package / Case	RoHS Compliance	Product Status
PDTC143EEF,115	NXP USA Inc.	NPN - Pre-Biased	50 V	100 mA	4.7 kΩ	4.7 kΩ	30 @ 10mA, 5V	150 mV @ 500µA, 10mA	1 µA	250 mW	Surface Mount	SC-89, SOT-490	ROHS3	Obsolete
DTC143EET1G	onsemi	NPN - Pre-Biased	50 V	100 mA	4.7 kΩ	4.7 kΩ	15 @ 5mA, 10V	250 mV @ 1mA, 10mA	500 nA	200 mW	Surface Mount	SC-75, SOT-416	ROHS3	Active
RN1101,LF(CT	Toshiba Semiconductor and Storage	NPN - Pre-Biased	50 V	100 mA	4.7 kΩ	4.7 kΩ	30 @ 10mA, 5V	300 mV @ 250µA, 5mA	500 nA	100 mW	Surface Mount	SC-75, SOT-416	ROHS3	Active

Engineering Selection Recommendations

PDTC143EEF,115 is obsolete. DTC143EET1G from onsemi and RN1101,LF(CT from Toshiba Semiconductor and Storage both have active status and meet RoHS3 compliance requirements. Both substitutes are available in surface-mount miniature packages, matching the intended application criteria as indicated in the input data.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for substituting PDTC143EEF,115 with another part in the Transistors, Bipolar (BJT) category?
A1: Primary criteria include identical transistor type (NPN pre-biased), equivalent collector-emitter voltage (50 V), collector current (100 mA), integrated base and emitter-base resistors (4.7 kΩ each), surface-mount package, and RoHS3 compliance.

Q2: Are there differences in package type among the main part and substitutes?
A2: PDTC143EEF,115 uses the SC-89 (SOT-490) package. DTC143EET1G and RN1101,LF(CT both use the SC-75 (SOT-416) or equivalent miniature surface-mount packages. Suitability must be determined based on PCB layout constraints for these closely related outline types.

Q3: Is DC current gain (hFE) consistent between the main part and all substitutes?
A3: RN1101,LF(CT matches the main part's hFE minimum value (30 @ 10mA, 5V). DTC143EET1G features a minimum hFE of 15 @ 5mA, 10V.

Q4: Are all listed substitutes compliant with RoHS3 and available as active devices?
A4: DTC143EET1G and RN1101,LF(CT are both RoHS3 compliant and have active status, matching electronic compliance and procurement requirements.

Q5: What are the key mechanical differences with substitutes to consider for Board Level compatibility?
A5: Substitute packages SC-75 and SOT-416 are industry-standard surface mount outlines. Dimensional checks against SC-89 (SOT-490) footprints should be carried out according to board design documentation.

Q6: How does the maximum power dissipation of the substitutes compare to PDTC143EEF,115?
A6: DTC143EET1G specifies 200 mW, RN1101,LF(CT specifies 100 mW, compared to 250 mW for PDTC143EEF,115. These factors should be evaluated for thermal management in the given application.

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