Equivalent & Substitute Parts Reference for DTC115TUAT106

Part Overview

DTC115TUAT106 is a pre-biased NPN bipolar junction transistor (BJT) from Rohm Semiconductor in the "Transistors, Bipolar (BJT)" category, supplied in surface-mount UMT3 (SC-70, SOT-323) packaging. It offers a maximum collector-emitter breakdown voltage of 50 V, a maximum collector current of 100 mA, and incorporates an internal base resistor of 100 kOhms. The part is currently active with verified inventory. Sourcing equivalent or substitute transistors is essential in scenarios of stock outage, design updates, or multi-sourcing requirements while maintaining form-fit-function and electrical compatibility.

Key Parameters

Parameter	DTC115TUAT106 Value
Manufacturer Part Number	DTC115TUAT106
Manufacturer	Rohm Semiconductor
Category	Transistors, Bipolar (BJT)
Transistor Type	NPN - Pre-Biased
Current - Collector (Ic) (Max)	100 mA
Voltage - Collector Emitter Breakdown (Max)	50 V
Resistor - Base (R1)	100 kOhms
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 1mA, 5V
Vce Saturation (Max) @ Ib, Ic	300mV @ 100µA, 1mA
Current - Collector Cutoff (Max)	500nA (ICBO)
Frequency - Transition	250 MHz
Power - Max	200 mW
Mounting Type	Surface Mount
Package / Case	SC-70, SOT-323
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Substitute selection for DTC115TUAT106 is determined strictly by matching the following parameters:

Transistor type: NPN - Pre-Biased
Maximum collector current (Ic): 100 mA
Maximum collector-emitter breakdown voltage: 50 V
Base resistor value (R1): 100 kOhms or nearest standard values
Saturation voltage and current gain: within range of application requirements
Package: SC-70, SOT-323 or UMT3 equivalents
Mounting type: Surface Mount
Compliance: ROHS3, MSL 1, REACH Unaffected, ECCN EAR99

Only those parts matching these allowed limits and package are presented for substitution. Substitute parts differ in base resistor value where noted and thus are listed as "similar" if not identical.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Transistor Type	I_C (Max)	V_CEO (Max)	R₁ (Base Resistor)	hFE (Min)	V_CE(sat) (Max)	Frequency (f_T)	Power (Max)	Mounting Type	Package / Case	RoHS Status	MSL	REACH Status	ECCN
DTC115TUAT106	Rohm Semiconductor	NPN - Pre-Biased	100 mA	50 V	100 kOhms	100 @ 1mA, 5V	300mV @ 100µA, 1mA	250 MHz	200 mW	Surface Mount	SC-70, SOT-323	ROHS3	1	Unaffected	EAR99
MUN5241T1G	onsemi	NPN - Pre-Biased	100 mA	50 V	100 kOhms	160 @ 5mA, 10V	250mV @ 5mA, 10mA	-	202 mW	Surface Mount	SC-70, SOT-323	ROHS3	1	Unaffected	EAR99
DDTC115GUA-7-F	Diodes Incorporated	NPN - Pre-Biased	100 mA	50 V	100 kOhms (R2)	82 @ 5mA, 5V	300mV @ 500µA, 10mA	250 MHz	200 mW	Surface Mount	SC-70, SOT-323	ROHS3	1	Unaffected	EAR99
DDTC115TUA-7-F	Diodes Incorporated	NPN - Pre-Biased	100 mA	50 V	100 kOhms	100 @ 1mA, 5V	300mV @ 100µA, 1mA	250 MHz	200 mW	Surface Mount	SC-70, SOT-323	ROHS3	1	Unaffected	EAR99
RN1312(TE85L,F)	Toshiba Semiconductor and Storage	NPN - Pre-Biased	100 mA	50 V	22 kOhms	120 @ 1mA, 5V	300mV @ 250µA, 5mA	250 MHz	150 mW	Surface Mount	SC-70, SOT-323	ROHS3	1	-	EAR99
PDTC124TU,115	Nexperia USA Inc.	NPN - Pre-Biased	100 mA	50 V	22 kOhms	100 @ 1mA, 5V	150mV @ 500µA, 10mA	-	200 mW	Surface Mount	SC-70, SOT-323	ROHS3	1	Unaffected	EAR99

Engineering Selection Recommendations

Primary substitute selection is supported for active products with valid compliance certifications:

All listed substitutes are "active."
RoHS3 compliance and MSL 1 (Unlimited) are confirmed for all direct and similar alternatives.
REACH status is unaffected for all, and ECCN remains EAR99.
Substitute package style (SC-70, SOT-323) matches required footprint for direct PCB replacement in surface-mount assemblies.

Frequently Asked Questions (FAQ)

Q1: Which key parameters ensure compatibility between DTC115TUAT106 and substitute pre-biased NPN BJTs?
A1: Compatibility is based on transistor type (NPN - Pre-Biased), maximum collector current (100 mA), breakdown voltage (50 V), base resistor value, package (SC-70, SOT-323), and mounting style.

Q2: Can substitute parts be selected with different base resistor values?
A2: Substitute parts with alternate resistor values (e.g., 22 kOhms vs. 100 kOhms) are only suitable for applications where circuit requirements allow such variance. Confirm electrical equivalence using provided resistor values.

Q3: Are all substitute parts RoHS and REACH compliant?
A3: All substitutes listed provide ROHS3 compliance and REACH unaffected status in the input.

Q4: Does the package style affect mechanical interchangeability?
A4: Substitutes must match SC-70 or SOT-323 package to ensure mechanical fit on the PCB. All listed substitutes conform to this specification.

Q5: Does active product status influence selection?
A5: Only parts marked as "active" are considered for direct substitution, ensuring ongoing manufacturer support and supply chain reliability.

Q6: Is power dissipation (mW rating) critical in selection?
A6: Substitute components are listed with equal or very similar maximum power ratings, ensuring compatible thermal management in the same footprint.

Q7: What inventory and supply chain information is available for these substitutes?
A7: Inventory status for substitutes is provided in the input for immediate selection considerations, but availability may vary per supplier.

Q8: Are there any additional certifications or qualifications for automotive use noted?
A8: Select models, such as PDTC123TU,115, include Automotive Grade and AEC-Q100 qualification as indicated in the input.

Q9: How should the transition frequency and current gain be considered?
A9: Provided transition frequency (fT) and current gain values should be compared to ensure application performance requirements are satisfied.

Q10: Can substitutes be mixed within the same BOM?
A10: Substitutes matching outlined electrical and mechanical parameters and compliance criteria can be used interchangeably within the same bill of materials (BOM), subject to the application's base resistor value tolerance.

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