Equivalent & Substitute Parts Reference: 2SA1774TLS

Part Overview

Manufacturer Part Number 2SA1774TLS from Rohm Semiconductor is a PNP bipolar junction transistor, classified under Transistors, Bipolar (BJT). This product features a surface mount EMT3 package (SC-75, SOT-416), rated for 50 V collector-emitter voltage, 150 mA collector current, 140 MHz transition frequency, and 150 mW power dissipation. The product status is "Not For New Designs." Due to this designation, sourcing equivalent or substitute models becomes necessary to maintain supply continuity in new or ongoing designs.

Key Parameters

Parameter	Value
Manufacturer	Rohm Semiconductor
Category	Transistors, Bipolar (BJT)
Transistor Type	PNP
Voltage - Collector Emitter Breakdown (Max)	50 V
Current - Collector (Ic) (Max)	150 mA
Vce Saturation (Max) @ Ib, Ic	500 mV @ 5mA, 50mA
Current - Collector Cutoff (Max)	100 nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce	120 @ 1mA, 6V
Power - Max	150 mW
Frequency - Transition	140 MHz
Operating Temperature	150°C (TJ)
Mounting Type	Surface Mount
Package / Case	SC-75, SOT-416
Supplier Device Package	EMT3
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8541.21.0075
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitute parts are grouped according to strict equivalency in core electrical and mechanical parameters. The following fields are used to determine compatibility:

Transistor Type
Voltage - Collector Emitter Breakdown (Max)
Current - Collector (Ic) (Max)
Vce Saturation (Max) @ Ib, Ic
Current - Collector Cutoff (Max)
DC Current Gain (hFE) (Min) @ Ic, Vce
Power - Max
Frequency - Transition
Operating Temperature
Mounting Type
Package / Case
Supplier Device Package
RoHS Status
Moisture Sensitivity Level (MSL)
REACH Status
ECCN
HTSUS

Parametric equivalents match all critical electrical and packaging parameters. Similar parts closely match, but may differ in collector current (Ic), current cutoff, or manufacturer.

Parameter Comparison

Part Number	Manufacturer	Transistor Type	V_CE Breakdown (Max)	I_C (Max)	V_{CE (sat)} (Max) @ Ib, Ic	I_CBO (Max)	h_FE (Min) @ Ic, Vce	P_Max	f_T	Operating Temp	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	MSL	REACH Status	ECCN	HTSUS	Product Status
2SA1774TLS	Rohm Semiconductor	PNP	50 V	150 mA	500 mV @ 5mA, 50mA	100 nA	120 @ 1mA, 6V	150 mW	140 MHz	150°C (TJ)	Surface Mount	SC-75, SOT-416	EMT3	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8541.21.0075	Not For New Designs
2SA1774E3TLQ	Rohm Semiconductor	PNP	50 V	150 mA	500 mV @ 5mA, 50mA	100 nA	120 @ 1mA, 6V	150 mW	140 MHz	150°C (TJ)	Surface Mount	SC-75, SOT-416	EMT3	ROHS3 Compliant	1 (Unlimited)	-	EAR99	8541.21.0075	Active
2SA1774TLQ	Rohm Semiconductor	PNP	50 V	150 mA	500 mV @ 5mA, 50mA	100 nA	120 @ 1mA, 6V	150 mW	140 MHz	150°C (TJ)	Surface Mount	SC-75, SOT-416	EMT3	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8541.21.0075	Active
2SA1774T1G	onsemi	PNP	50 V	100 mA	500 mV @ 5mA, 50mA	500 nA	120 @ 1mA, 6V	150 mW	140 MHz	150°C (TJ)	Surface Mount	SC-75, SOT-416	SC-75, SOT-416	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8541.21.0075	Active
S2SA1774G	onsemi	PNP	50 V	100 mA	500 mV @ 5mA, 50mA	500 pA	120 @ 1mA, 6V	150 mW	140 MHz	-55°C ~ 150°C (TJ)	Surface Mount	SC-75, SOT-416	SC-75, SOT-416	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8541.21.0075	Active

Engineering Selection Recommendations

Selection of substitute parts for 2SA1774TLS should be based on product status and compliance. Active status substitutes such as 2SA1774E3TLQ and 2SA1774TLQ from Rohm Semiconductor match all electrical and mechanical parameters and carry ROHS3 compliance, unlimited moisture sensitivity (MSL 1), and relevant international certifications. Similar parts, 2SA1774T1G and S2SA1774G from onsemi, provide matching package, function, and compliance but feature a lower maximum collector current (100 mA). All listed substitutes are ROHS3 compliant and exhibit MSL 1 (Unlimited), with HTSUS and ECCN codes aligned for classification equivalency.

Frequently Asked Questions (FAQ)

Q1: What parameters are most critical when selecting a substitute bipolar transistor for 2SA1774TLS?
A: Key parameters include transistor polarity (PNP), collector-emitter breakdown voltage (50 V), collector current (Ic), Vce saturation, DC current gain (hFE), frequency (fT), power dissipation, package type (SC-75/SOT-416/EMT3), and compliance attributes.

Q2: Can substitute models use a different package type?
A: Only surface-mount SC-75/SOT-416/EMT3 packages, as specified in the input, meet equivalency requirements.

Q3: Are substitutes from different manufacturers equivalent?
A: Parts from onsemi such as 2SA1774T1G and S2SA1774G match all key attributes except for collector current, which is specified at 100 mA. Electrical, mechanical, and compliance parameters align as per provided information.

Q4: How does product status affect substitute selection?
A: "Not For New Designs" status indicates that alternatives with "Active" status should be selected for new projects or ongoing design revisions.

Q5: Are there any compliance differences among substitutes?
A: All listed substitutes are ROHS3 compliant, MSL 1, and either have verified REACH status or are REACH unaffected, ensuring equivalent environmental and safety standards.

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