Equivalent & Substitute Parts for 2SB1184TLR Bipolar (BJT) Transistor

Part Overview

The 2SB1184TLR is a PNP bipolar junction transistor (BJT) manufactured by Rohm Semiconductor for surface-mount applications. It features a collector-emitter voltage breakdown of 50 V, a maximum collector current of 3 A, transition frequency of 70 MHz, maximum power dissipation of 1 W, and is housed in a TO-252-3, DPAK (SC-63) package. This part is listed as “Not For New Designs,” so it is necessary to identify equivalent or substitute models for ongoing or new engineering projects, especially to maintain supply chain continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	2SB1184TLR
Transistor Type	PNP
Current - Collector (Ic) (Max)	3 A
Voltage - Collector Emitter Breakdown (Max)	50 V
Vce Saturation (Max) @ Ib, Ic	1V @ 200mA, 2A
DC Current Gain (hFE) (Min) @ Ic, Vce	180 @ 500mA, 3V
Power - Max	1 W
Frequency - Transition	70MHz
Operating Temperature	150°C (TJ)
Mounting Type	Surface Mount
Package / Case	TO-252-3, DPAK (SC-63)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitute parts are selected strictly on the following parameters: transistor type (PNP), maximum collector current (Ic), collector-emitter breakdown voltage (Vce), package compatibility (TO-252-3, DPAK, SC-63), mounting type (surface mount), acceptable ranges for Vce saturation, current gain (hFE), power dissipation, transition frequency, operating temperature, RoHS compliance, and moisture sensitivity level. Only models meeting or exceeding these specific electrical and mechanical parameters are considered valid substitutes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Transistor Type	Current - Collector (Ic) (Max)	Voltage - Collector Emitter Breakdown (Max)	Vce Saturation (Max) @ Ib, Ic	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Frequency - Transition	Operating Temperature	Mounting Type	Package / Case	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status	Product Status
2SB1184TLR	Rohm Semiconductor	PNP	3 A	50 V	1V @ 200mA, 2A	180 @ 500mA, 3V	1 W	70MHz	150°C (TJ)	Surface Mount	TO-252-3, DPAK, SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Not For New Designs
2DB1184Q-13	Diodes Incorporated	PNP	3 A	50 V	1V @ 200mA, 2A	120 @ 500mA, 3V	15 W	110MHz	-55°C ~ 150°C (TJ)	Surface Mount	TO-252-3, DPAK, SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active
2SA2126-TL-E	onsemi	PNP	3 A	50 V	520mV @ 100mA, 2A	200 @ 100mA, 2V	800 mW	390MHz	150°C (TJ)	Surface Mount	TO-252-3, DPAK, SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active
2SA2126-TL-H	onsemi	PNP	3 A	50 V	520mV @ 100mA, 2A	200 @ 100mA, 2V	800 mW	390MHz	150°C (TJ)	Surface Mount	TO-252-3, DPAK, SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Obsolete
2SB1184-R-TP	Micro Commercial Co	PNP	3 A	50 V	1V @ 200mA, 2A	82 @ 500mA, 3V	1 W	70MHz	150°C (TJ)	Surface Mount	TO-252-3, DPAK, SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active
2SB1201S-TL-E	onsemi	PNP	2 A	50 V	700mV @ 50mA, 1A	100 @ 100mA, 2V	800 mW	150MHz	150°C (TJ)	Surface Mount	TO-252-3, DPAK, SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active
2SB1202T-TL-E	onsemi	PNP	3 A	50 V	700mV @ 100mA, 2A	200 @ 100mA, 2V	1 W	150MHz	150°C (TJ)	Surface Mount	TO-252-3, DPAK, SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Obsolete
2SB1204S-TL-E	onsemi	PNP	8 A	50 V	500mV @ 200mA, 4A	140 @ 500mA, 2V	1 W	130MHz	150°C (TJ)	Surface Mount	TO-252-3, DPAK, SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Obsolete
ZXT790AKTC	Diodes Incorporated	PNP	3 A	40 V	450mV @ 300mA, 3A	300 @ 10mA, 2V	3.9 W	100MHz	-55°C ~ 150°C (TJ)	Surface Mount	TO-252-3, DPAK, SC-63	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active

Engineering Selection Recommendations

Alternative parts should be selected based on active production status, ROHS3 compliance, REACH unaffected status, and moisture sensitivity level of MSL 1. Only parts with equivalent or better package compatibility and environmental certifications are suitable for substitution in applications where long-term availability and compliance are required. Obsolete or “Not For New Designs” parts may be used only where legacy compatibility is essential and current inventory suffices.

Frequently Asked Questions (FAQ)

Q1: What are the most critical parameters for substituting the 2SB1184TLR?
A1: Transistor type, collector current rating, collector-emitter breakdown voltage, package/case compatibility, mounting type, environmental compliance, and product status are the main criteria.

Q2: Are substitute parts guaranteed to have matching electrical characteristics for all designs?
A2: Substitute parts are matched on defined key parameters. If the requirements align with those parameters, substitution is permitted.

Q3: How important is the package/case in making a substitution?
A3: Package/case compatibility (TO-252-3, DPAK, SC-63) and mounting type (surface mount) are mandatory for drop-in substitution without mechanical modification.

Q4: Can substitutes be used in applications requiring ROHS and REACH compliance?
A4: All listed substitutes indicate ROHS3 compliance and REACH-unaffected status, meeting regulatory standards for environmental safety.

Q5: Is it necessary to consider product status when making a selection?
A5: Selecting parts with “Active” product status is required for new designs to ensure ongoing manufacturer support and supply availability. Obsolete or not recommended for new design status should only be considered for maintenance of existing products.

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