Equivalent & Substitute Parts for 2DA1774R-7

Part Overview

The 2DA1774R-7 is a PNP bipolar junction transistor (BJT) manufactured by Diodes Incorporated, rated for 50V collector-emitter breakdown voltage and 0.15A maximum collector current. This component is classified as an active product with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). The device is supplied in Cut Tape (CT) and Digi-Reel® packaging formats.

Equivalent and substitute parts are identified to address inventory availability, packaging format requirements, or specific application constraints while maintaining electrical and mechanical compatibility within the defined parameter ranges.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	0.15	A
Power - Max	150	mW
Frequency - Transition	140	MHz
Operating Temperature (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-523	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 2DA1774R-7 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Transistor Type: PNP configuration
Voltage - Collector Emitter Breakdown (Max): 50V minimum
Current - Collector (Ic) (Max): 0.15A or greater
Power - Max: 150mW or greater
Frequency - Transition: 140MHz or greater
DC Current Gain (hFE): 120 or greater at specified conditions
Operating Temperature: -55°C to 150°C or greater upper limit

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount
Package / Case: SOT-523, SOT-323, or SC-75/SOT-416 (footprint-dependent application)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitutes are grouped by packaging format and electrical performance tier. Direct substitutes maintain identical or superior electrical specifications. Similar substitutes meet core electrical requirements with package or performance variations that require application-level verification of mechanical fit.

Parameter Comparison

Parameter	2DA1774R-7	2DA1774R-7-F	2PA1576R,115	2SA1774T1G
Manufacturer	Diodes Incorporated	Diodes Incorporated	Nexperia USA Inc.	onsemi
Transistor Type	PNP	PNP	PNP	PNP
Voltage - Collector Emitter Breakdown (Max)	50V	50V	50V	50V
Current - Collector (Ic) (Max)	0.15A	0.15A	0.15A	0.1A
Vce Saturation (Max) @ Ib, Ic	500mV @ 5mA, 50mA	500mV @ 5mA, 50mA	500mV @ 5mA, 50mA	500mV @ 5mA, 50mA
Current - Collector Cutoff (Max)	—	100nA (ICBO)	100nA (ICBO)	500nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce	—	180 @ 1mA, 6V	180 @ 1mA, 6V	120 @ 1mA, 6V
Power - Max	150mW	150mW	200mW	150mW
Frequency - Transition	140MHz	140MHz	100MHz	140MHz
Operating Temperature (Max)	150°C	150°C	150°C	150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOT-523	SOT-523	SOT-323 (SC-70)	SOT-416 (SC-75)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

2DA1774R-7-F (Diodes Incorporated)

This part is a direct electrical equivalent supplied in Tape & Reel (TR) packaging instead of Cut Tape format. Both parts share identical electrical specifications, voltage ratings, current ratings, and power dissipation limits. The 2DA1774R-7-F maintains the same SOT-523 package footprint and is ROHS3 compliant with MSL 1 rating. Selection of this substitute is appropriate when Tape & Reel packaging format is required for automated assembly processes. Inventory availability is 6400 pieces.

2PA1576R,115 (Nexperia USA Inc.)

This part meets core electrical requirements with the following distinctions: maximum collector current is identical at 0.15A, voltage rating is 50V, and power dissipation is rated at 200mW (exceeding the 150mW specification). The transition frequency is 100MHz, which is lower than the 140MHz specification of the main part. The package format is SOT-323 (SC-70), which differs from the SOT-523 footprint. This part carries AEC-Q101 automotive qualification and is suitable for applications where automotive-grade components are required. Mechanical compatibility requires PCB layout adjustment due to package difference. Inventory availability is 6400 pieces.

2SA1774T1G (onsemi)

This part is electrically compatible with the following parameters: 50V voltage rating, 140MHz transition frequency matching the main part, and 150mW power rating. The maximum collector current is rated at 0.1A, which is lower than the 0.15A specification of the main part. The DC current gain (hFE) is specified at 120, compared to 180 for the 2DA1774R-7-F. The package format is SC-75/SOT-416, which differs from the SOT-523 footprint and requires PCB layout modification. This part is suitable for applications where the reduced current rating and different package footprint are acceptable. Inventory availability is 2780 pieces.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and active product status. Selection between substitutes is determined by packaging format requirements, current rating constraints, and application-specific certifications.

Frequently Asked Questions (FAQ)

Q: Can the 2DA1774R-7 be directly replaced with the 2DA1774R-7-F without PCB modification?

A: Yes. Both parts use the SOT-523 package footprint and are electrically identical. The primary difference is packaging format: 2DA1774R-7 is supplied in Cut Tape (CT) and Digi-Reel® format, while 2DA1774R-7-F is supplied in Tape & Reel (TR) format. No PCB layout changes are required.

Q: What is the primary limitation of the 2SA1774T1G as a substitute?

A: The 2SA1774T1G has a maximum collector current rating of 0.1A, compared to 0.15A for the 2DA1774R-7. Applications requiring the full 0.15A current capability cannot use this substitute. Additionally, the SC-75/SOT-416 package footprint differs from SOT-523, requiring PCB layout modification.

Q: Is the 2PA1576R,115 suitable for high-frequency applications?

A: The 2PA1576R,115 has a transition frequency of 100MHz, which is lower than the 140MHz specification of the 2DA1774R-7 and 2DA1774R-7-F. Applications requiring operation at or above 140MHz should not use this substitute. The part is qualified to AEC-Q101 automotive standards and is suitable for automotive applications where the reduced frequency specification is acceptable.

Q: What packaging considerations apply when substituting the 2DA1774R-7?

A: The 2DA1774R-7 uses SOT-523 package. The 2DA1774R-7-F maintains this footprint. The 2PA1576R,115 uses SOT-323 (SC-70) package, and the 2SA1774T1G uses SC-75/SOT-416 package. Substitutes with different package formats require PCB layout modification and cannot be used as direct drop-in replacements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (2DA1774R-7-F, 2PA1576R,115, and 2SA1774T1G) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the main part.

Q: Which substitute part has the highest power dissipation rating?

A: The 2PA1576R,115 is rated for 200mW maximum power dissipation, compared to 150mW for the other parts. This higher rating provides additional thermal margin in applications with sustained power dissipation requirements.

Q: Can the 2SA1774T1G be used in applications requiring 0.15A collector current?

A: No. The 2SA1774T1G is rated for a maximum collector current of 0.1A. Applications requiring 0.15A collector current must use the 2DA1774R-7, 2DA1774R-7-F, or 2PA1576R,115.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message