DTA143EUBTL Equivalent & Substitute Parts Reference

Part Overview

The DTA143EUBTL from Rohm Semiconductor is a pre-biased bipolar junction transistor (BJT), PNP type, housed in a surface-mount UMT3F (SC-85) package. It features a 50 V collector-emitter breakdown voltage, 100 mA collector current, and integrated base-emitter and base resistors of 4.7 kOhms each. The DTA143EUBTL is currently marked as "Not For New Designs," which necessitates the identification and evaluation of suitable alternatives for continued production and design activities within this product category.

Key Parameters

Parameter	DTA143EUBTL
Transistor Type	PNP - Pre-Biased
Voltage - Collector Emitter Breakdown (Max)	50 V
Current - Collector (Ic) (Max)	100 mA
Resistor - Base (R1)	4.7 kOhms
Resistor - Emitter Base (R2)	4.7 kOhms
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 10mA, 5V
Vce Saturation (Max) @ Ib, Ic	300mV @ 500µA, 10mA
Current - Collector Cutoff (Max)	500nA
Power - Max	200 mW
Frequency - Transition	250 MHz
Mounting Type	Surface Mount
Package / Case	SC-85 (UMT3F)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution within the transistors, bipolar (BJT), pre-biased category is limited to parts meeting all of the following criteria:

PNP - Pre-Biased transistor type
Collector-Emitter Breakdown Voltage (Max): 50 V
Collector Current (Max): 100 mA
Base and Emitter-Base Resistors: 4.7 kOhms each
DC Current Gain (hFE) (Min): 30 @ 10mA, 5V
Maximum Vce Saturation: within provided values
Maximum Collector Cutoff Current: within provided values
Maximum Power: 200 mW
Surface mount form factor Parts outside these parameter boundaries are not included in this equivalency group.

Parameter Comparison

Parameter	DTA143EUBTL (Rohm Semiconductor)	PDTA143EU,115 (Nexperia USA Inc.)
Transistor Type	PNP - Pre-Biased	PNP - Pre-Biased
Voltage - Collector Emitter Breakdown (Max)	50 V	50 V
Current - Collector (Ic) (Max)	100 mA	100 mA
Resistor - Base (R1)	4.7 kOhms	4.7 kOhms
Resistor - Emitter Base (R2)	4.7 kOhms	4.7 kOhms
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 10mA, 5V	30 @ 10mA, 5V
Vce Saturation (Max) @ Ib, Ic	300mV @ 500µA, 10mA	150mV @ 500µA, 10mA
Current - Collector Cutoff (Max)	500nA	100nA (ICBO)
Power - Max	200 mW	200 mW
Mounting Type	Surface Mount	Surface Mount
Package / Case	SC-85 (UMT3F)	SC-70, SOT-323
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The DTA143EUBTL is designated as "Not For New Designs," while the substitute PDTA143EU,115 is "Active." Both are ROHS3 compliant, MSL 1 (unlimited), and REACH unaffected. The provided substitute part maintains compliance and availability in the same product category.

Frequently Asked Questions (FAQ)

Q1: What parameters must match when substituting pre-biased PNP BJTs in this category?
A1: Parts must match transistor type, collector-emitter breakdown voltage, collector current, base and emitter-base resistor values, DC current gain, Vce saturation, collector cutoff current, power, and mounting type.

Q2: Are there any compatibility considerations regarding the package/case?
A2: The DTA143EUBTL uses the SC-85 (UMT3F) package, while the PDTA143EU,115 uses SC-70 (SOT-323). Review PCB layout requirements to ensure mechanical compatibility between these packages.

Q3: Is there any difference in lead-free and compliance status between the compared parts?
A3: Both DTA143EUBTL and PDTA143EU,115 are ROHS3 compliant and REACH unaffected, with identical MSL classifications.

Q4: What is the impact of product status on part selection?
A4: The DTA143EUBTL is not recommended for new designs, whereas PDTA143EU,115 is active, indicating long-term availability as a replacement within the same product category.

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