2SA1908 Equivalent & Substitute Parts Reference

Part Overview

The 2SA1908 is an active PNP bipolar junction transistor from Sanken Electric USA Inc., categorized under Transistors, Bipolar (BJT). It features a collector-emitter voltage rating of 120 V, a collector current of 8 A, and a maximum power dissipation of 75 W, housed in a TO-3PF package. This component is RoHS compliant and suitable for through-hole mounting, with an operating junction temperature up to 150°C. Locating substitute models is necessary when inventory constraints, package compatibility requirements, or specific compliance needs arise.

Key Parameters

Parameter	2SA1908
Transistor Type	PNP
Current - Collector (Ic) (Max)	8 A
Voltage - Collector Emitter Breakdown (Max)	120 V
Power - Max	75 W
Frequency - Transition	20 MHz
Operating Temperature (TJ)	150°C
Package / Case	TO-3P-3 Full Pack
Mounting Type	Through Hole
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitute and equivalent transistors for 2SA1908 are identified strictly by matching or exceeding key electrical and mechanical parameters: transistor type (PNP), collector current capacity, collector-emitter voltage rating, power dissipation, package type for mounting compatibility, transition frequency, and specified compliance status (RoHS, MSL). Only parts with explicit matches or declared substitutions based on parameter equivalence are included.

Parameter Comparison

Parameter	2SA1908	TIP36C	TIP36CW
Transistor Type	PNP	PNP	PNP
Current - Collector (Ic) (Max)	8 A	25 A	25 A
Voltage - Collector Emitter Breakdown (Max)	120 V	100 V	100 V
Power - Max	75 W	125 W	125 W
Frequency - Transition	20 MHz	3 MHz	3 MHz
Operating Temperature (TJ)	150°C	-65°C ~ 150°C	150°C
Package / Case	TO-3P-3 Full Pack	TO-218-3	TO-247-3
Mounting Type	Through Hole	Through Hole	Through Hole
RoHS Status	RoHS Compliant	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

Select substitute parts with active product status matching compliance and regulatory requirements, such as RoHS status and moisture sensitivity level (MSL). Ensure compatible mounting type (through-hole) and that the substitute meets or exceeds the minimum electrical and thermal parameters relevant for use. Package variation should be considered for mechanical and assembly compatibility, as the 2SA1908 uses TO-3P-3 Full Pack while TIP36C uses TO-218-3 and TIP36CW uses TO-247-3.

Frequently Asked Questions (FAQ)

Q1: What parameters are essential for substituting the 2SA1908 transistor?
A1: Substitution must match or exceed transistor type (PNP), collector current (Ic), collector-emitter voltage (Vce), maximum power, operating temperature range, mounting type, and package compatibility.

Q2: Are TIP36C and TIP36CW direct substitutes for 2SA1908?
A2: TIP36C and TIP36CW are listed substitutes based on matching transistor type, mounting type, higher current and power ratings. Differences exist in breakdown voltage, transition frequency, and package, which must be considered for critical applications.

Q3: Does RoHS compliance differ between these parts?
A3: 2SA1908 and TIP36CW are RoHS compliant, while TIP36C is RoHS non-compliant. Selection should align with compliance requirements of the end application.

Q4: What package differences exist between these transistors?
A4: The 2SA1908 uses a TO-3P-3 Full Pack, TIP36C is in TO-218-3, and TIP36CW uses TO-247-3. Mechanical fit and heat dissipation may be affected; check assembly compatibility.

Q5: How does frequency transition affect substitution?
A5: The 2SA1908 offers a transition frequency of 20 MHz, whereas substitutes offer 3 MHz. Applications requiring higher frequency performance should review this parameter accordingly.

Q6: Is mounting type uniform across these substitutes?
A6: All listed substitutes share a through-hole mounting type, supporting mechanical compatibility for assembly.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message