DTC143TCAT116 Equivalent & Substitute Parts Reference

Part Overview

The Rohm Semiconductor DTC143TCAT116 is a surface-mount, pre-biased NPN bipolar junction transistor (BJT) intended for signal amplification and switching applications. The product is active and commonly stocked in Cut Tape (CT) and Digi-Reel® packaging, supplied in the SST3 (TO-236-3, SC-59, SOT-23-3) package. Due to demand, supply chain constraints, multisourcing requirements, or logistics management, identifying electrical, mechanical, and regulatory equivalent or substitute BJTs is essential in many designs.

Key Parameters

Parameter	Value
Transistor Type	NPN - Pre-Biased
Current - Collector (Ic) (Max)	100 mA
Voltage - Collector Emitter Breakdown (Max)	50 V
Resistor - Base (R1)	4.7 kOhms
DC Current Gain (hFE) (Min)	100 @ 1mA, 5V
Vce Saturation (Max)	300mV @ 250µA, 5mA
Current - Collector Cutoff (Max)	500nA
Frequency - Transition (ft)	250 MHz
Power - Max	200 mW
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
RoHS Compliant	Yes (ROHS3)
MSL	1 (Unlimited)
REACH Status	Unaffected

Substitute Part Grouping Explanation

Substitutes for the DTC143TCAT116 are selected strictly by matching product category (Transistors, Bipolar (BJT)), transistor polarity (NPN - Pre-Biased), absolute ratings for collector current and voltage, base resistor value, maximum collector cutoff current, power dissipation, package/case, mounting type, RoHS and REACH compliance, and moisture sensitivity. Only devices with identical or more robust values within the same package and compliance grade are considered valid substitutes.

Key parameters required for substitution:

Transistor Type: NPN - Pre-Biased
Current - Collector (Ic) (Max): 100 mA
Voltage - Collector Emitter Breakdown (Max): 50 V
Resistor - Base (R1): 4.7 kOhms
Power - Max ≥ 200 mW
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3
RoHS/REACH compliance
MSL: 1 (Unlimited)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Transistor Type	Ic (Max)	Vce Breakdown (Max)	R1	hFE (Min)	Vce(sat) (Max)	Collector Cutoff (Max)	Power - Max	Mounting Type	Package / Case	RoHS	MSL	REACH
DTC143TCAT116	Rohm Semiconductor	NPN - Pre-Biased	100 mA	50 V	4.7 kOhms	100 @ 1mA, 5V	300mV @ 250µA, 5mA	500nA	200 mW	Surface Mount	TO-236-3, SC-59, SOT-23-3	Yes (ROHS3)	1 (Unlimited)	Unaffected
MMUN2216LT1G	onsemi	NPN - Pre-Biased	100 mA	50 V	4.7 kOhms	160 @ 5mA, 10V	250mV @ 1mA, 10mA	500nA	400 mW	Surface Mount	TO-236-3, SC-59, SOT-23-3	Yes (ROHS3)	1 (Unlimited)	Unaffected
MUN2216T1G	onsemi	NPN - Pre-Biased	100 mA	50 V	4.7 kOhms	160 @ 5mA, 10V	250mV @ 1mA, 10mA	500nA	338 mW	Surface Mount	TO-236-3, SC-59, SOT-23-3	Yes (ROHS3)	1 (Unlimited)	Unaffected
PDTC143TT,215	NXP Semiconductors	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	1 (Unlimited)	Unaffected
SMMUN2216LT1G	onsemi	NPN - Pre-Biased	100 mA	50 V	4.7 kOhms	160 @ 5mA, 10V	250mV @ 1mA, 10mA	500nA	246 mW	Surface Mount	TO-236-3, SC-59, SOT-23-3	Yes (ROHS3)	1 (Unlimited)	Unaffected
SMMUN2216LT3G	onsemi	NPN - Pre-Biased	100 mA	50 V	4.7 kOhms	160 @ 5mA, 10V	250mV @ 1mA, 10mA	500nA	246 mW	Surface Mount	TO-236-3, SC-59, SOT-23-3	Yes (ROHS3)	1 (Unlimited)	Unaffected
SMUN2216T1G	onsemi	NPN - Pre-Biased	100 mA	50 V	10 kOhms	160 @ 5mA, 10V	250mV @ 1mA, 10mA	500nA	230 mW	Surface Mount	TO-236-3, SC-59, SOT-23-3	Yes (ROHS3)	1 (Unlimited)	Unaffected

Engineering Selection Recommendations

All substitute parts listed are categorized as active and comply with RoHS3, MSL 1, and REACH regulatory standards. Substitute parts with all parameters fully matching the base part ensure regulatory compatibility and risk mitigation in professional engineering workflows. Only select substitutes that exactly match base resistor value (R1) if this parameter is critical for biasing in the target application.

Frequently Asked Questions (FAQ)

Q1: What parameters are mandatory for substituting DTC143TCAT116 in a design?
A1: The replacement transistor must be NPN pre-biased, with 100 mA maximum collector current, 50 V collector-emitter breakdown voltage, base resistor (R1) of 4.7 kOhms, cutoff current of 500nA max, and surface-mount TO-236-3, SC-59, or SOT-23-3 package. RoHS3 and REACH compliance are also required.

Q2: Is it necessary to match the exact package for substitution?
A2: Yes, the substitute should have a compatible package such as TO-236-3, SC-59, or SOT-23-3 as listed for the main part.

Q3: Are all listed substitute parts surface mountable?
A3: Yes, all substitute parts are available in surface-mount packages as specified.

Q4: Why is matching the base resistor value (R1) important?
A4: The base resistor value sets the bias current; using a substitute with a different R1 may change the transistor's input characteristics and affect circuit performance.

Q5: Do the substitutes meet environmental and regulatory compliance requirements?
A5: All listed substitutes are RoHS3 compliant, have MSL 1 (unlimited shelf life), and are REACH unaffected.

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