Equivalent & Substitute Parts for 2SA1797T100P Bipolar (BJT) Transistor

Part Overview

The Rohm Semiconductor 2SA1797T100P is a surface mount PNP bipolar junction transistor (BJT) designed for medium power switching and amplification applications. It features a collector-emitter breakdown voltage of 50 V, a maximum collector current of 2 A, and a transition frequency of 200 MHz. With a package case of TO-243AA, it offers a maximum power dissipation of 2 W. The product status is "Not For New Designs," making it necessary to identify alternative models for both ongoing procurement and design-in activities. Substitutes are required to ensure continuity in supply and compatibility for new projects.

Key Parameters

Parameter	2SA1797T100P Value	Unit
Transistor Type	PNP	-
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	2	A
Vce Saturation (Max) @ Ib, Ic	350 @ 50mA, 1A	mV @ mA, A
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	82 @ 500mA, 2V	-
Power - Max	2	W
Frequency - Transition	200	MHz
Operating Temperature	150	°C
Mounting Type	Surface Mount	-
Package / Case	TO-243AA	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-
REACH Status	REACH Unaffected	-

Substitute Part Grouping Explanation

Substitution for the 2SA1797T100P is governed strictly by the following key parameters: transistor type (PNP), maximum collector-emitter breakdown voltage (50 V), maximum collector current (2 A or higher), Vce saturation voltage, DC current gain (hFE), transition frequency, operating temperature, mounting type (surface mount), package/case (TO-243AA), RoHS compliance, and moisture sensitivity. Only parts matching these criteria are listed as direct or similar alternatives. All mechanical and electrical compatibility assessments are restricted to explicit parameter matches provided.

Parameter Comparison

Manufacturer Part Number	Transistor Type	Vce Breakdown (Max)	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	RoHS Status	MSL	REACH Status
2SA1797T100P	PNP	50 V	2 A	350mV @ 50mA, 1A	100nA	82 @ 500mA, 2V	2 W	200 MHz	150°C (TJ)	Surface Mount	TO-243AA	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
PBSS5250X,115	PNP	50 V	2 A	320mV @ 200mA, 2A	100nA	200 @ 1A, 2V	1 W	100 MHz	150°C (TJ)	Surface Mount	TO-243AA	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
2DA1797-13	PNP	50 V	3 A	350mV @ 50mA, 1A	100nA	82 @ 500mA, 2V	900 mW	160 MHz	-55°C ~ 150°C (TJ)	Surface Mount	TO-243AA	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
2SA1213-Y-TP	PNP	50 V	2 A	500mV @ 50mA,1A	100nA	70 @ 500mA, 2V	1 W	100 MHz	150°C (TJ)	Surface Mount	TO-243AA	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
2SB1123S-TD-E	PNP	50 V	2 A	700mV @ 50mA, 1A	100nA	100 @ 100mA, 2V	500 mW	150 MHz	150°C (TJ)	Surface Mount	TO-243AA	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
2SB1123T-TD-E	PNP	50 V	2 A	700mV @ 50mA, 1A	100nA	200 @ 100mA, 2V	500 mW	150 MHz	150°C (TJ)	Surface Mount	TO-243AA	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected
DPLS350Y-13	PNP	50 V	3 A	390mV @ 300mA,3A	100nA	200 @ 1A,2V	1 W	100 MHz	-55°C ~ 150°C (TJ)	Surface Mount	TO-243AA	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected

Engineering Selection Recommendations

The main part, 2SA1797T100P, is listed as "Not For New Designs." All substitutes provided have "Active" product status, ROHS3 compliance, MSL 1 (Unlimited), and REACH unaffected status. Each substitute part meets the required environmental and regulatory certifications for direct replacement consideration. Substitute selection is restricted to components explicitly listed and matching in transistor type, voltage and current ratings, package, and compliance.

Frequently Asked Questions (FAQ)

Q1. What are the key substitution criteria for the 2SA1797T100P?
A1. Substitution is strictly based on transistor type (PNP), voltage rating (50 V), current rating (2 A or more), package/case (TO-243AA), mounting type (surface mount), Vce saturation, DC current gain, frequency, operating temperature, RoHS compliance, and moisture sensitivity level.

Q2. Can an NPN transistor such as DNLS350Y-13 be substituted for a PNP type?
A2. Substitution between PNP and NPN transistor types is not electrically compatible for standard applications. Only PNP transistors listed are considered direct or similar alternatives.

Q3. Is package compatibility strictly enforced during substitution?
A3. All substitute parts listed match the TO-243AA package/case and surface mount type as specified.

Q4. Are the environmental and compliance certifications matched across all listed substitutes?
A4. All listed substitutes are ROHS3 compliant, REACH unaffected, and have Moisture Sensitivity Level 1 (Unlimited).

Q5. How do differences in power dissipation, gain, or transition frequency affect selection?
A5. All substitutes are strictly listed based on provided electrical parameters and package; final selection should use only these specified matched parameters.

Q6. Can substitutes be used in new designs?
A6. All alternative part numbers provided have "Active" product status and compliance, making them suitable to replace the 2SA1797T100P, which is "Not For New Designs."

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