BD244C Equivalent & Substitute Parts

Part Overview

The BD244C is a PNP bipolar junction transistor manufactured by STMicroelectronics, rated for 100 V collector-emitter breakdown voltage and 6 A maximum collector current in a TO-220 through-hole package. This device is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

BD244C

STMicroelectronicsIn Stock: 2098BD244C Datasheet

Current PartRFQ

TIP127

NTE Electronics, IncIn Stock: 62369TIP127 Datasheet

DirectRFQ

BD244CG

onsemiIn Stock: 2156BD244CG Datasheet

DirectRFQ

TIP42C-BP

Micro Commercial CoIn Stock: 4769TIP42C-BP Datasheet

DirectRFQ

TIP42CG

onsemiIn Stock: 1494TIP42CG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BD244C are grouped based on strict electrical and mechanical parameter compatibility. The primary substitution criteria are:

Critical Parameters for Substitution:

• Transistor Type: PNP (standard or Darlington configuration)
• Voltage - Collector Emitter Breakdown (Max): 100 V minimum
• Current - Collector (Ic) (Max): 6 A or greater
• Package / Case: TO-220-3 form factor
• Mounting Type: Through Hole

Substitution Groups:

Group 1: Direct Electrical Equivalents (Standard PNP) Parts meeting all critical parameters with standard PNP configuration: BD244CG, TIP42CG, TIP42C-BP

Group 2: Functional Equivalents (PNP - Darlington) Parts meeting voltage and package requirements with Darlington configuration: TIP127

All substitute parts listed maintain TO-220 through-hole mounting and operate within the 100 V breakdown voltage specification. Variations in power dissipation, frequency response, and current gain are documented in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

BD244CG (onsemi) BD244CG is the direct manufacturer equivalent to BD244C, maintaining identical electrical specifications including 6 A collector current, 65 W power dissipation, and 1.5 V saturation voltage. This part is active in production with extended operating temperature range (-65°C to 150°C) and carries ROHS3 compliance and REACH Unaffected status. Selection of BD244CG eliminates obsolescence risk while preserving all electrical characteristics of the original design.

TIP42CG (onsemi) TIP42CG meets the 100 V breakdown voltage and 6 A collector current requirements with identical DC current gain specifications. This part is active with extended temperature range and ROHS3 compliance. Power dissipation is rated at 2 W, which differs from the BD244C specification of 65 W. TIP42CG is suitable for applications where thermal management requirements are within the 2 W power envelope.

TIP42C-BP (Micro Commercial Co) TIP42C-BP provides electrical compatibility with 100 V breakdown voltage and 6 A collector current in TO-220-3 package. This part is active in production with ROHS3 compliance and REACH Unaffected status. Power dissipation is rated at 2 W. Operating temperature maximum is 150°C. This part is suitable for designs where the 2 W power rating is acceptable.

TIP127 (NTE Electronics, Inc) TIP127 is a PNP Darlington transistor rated for 100 V breakdown voltage and 5 A collector current. This part is active in production with ROHS3 compliance. The Darlington configuration results in significantly higher DC current gain (1000 @ 3A, 3V) and higher saturation voltage (4V @ 20mA, 5A) compared to the BD244C. Power dissipation is 2 W. TIP127 is suitable for applications requiring high current gain characteristics, with the understanding that saturation voltage and power dissipation differ from the original specification.

Frequently Asked Questions (FAQ)

Q: Can BD244CG be used as a direct replacement for BD244C? A: Yes. BD244CG maintains identical electrical specifications for collector current (6 A), breakdown voltage (100 V), saturation voltage (1.5 V @ 1A, 6A), and DC current gain (15 @ 3A, 4V). Both use TO-220-3 through-hole packaging. BD244CG is active in production, whereas BD244C is obsolete.

Q: What is the primary difference between TIP42CG and BD244C? A: Both parts meet the 100 V breakdown voltage and 6 A collector current requirements with identical DC current gain. The primary difference is power dissipation: BD244C is rated for 65 W, while TIP42CG is rated for 2 W. Selection depends on thermal management requirements of the application.

Q: Why does TIP127 have different electrical characteristics? A: TIP127 is a Darlington configuration transistor, which combines two transistor stages internally. This results in higher DC current gain (1000 versus 15) and higher saturation voltage (4V versus 1.5V). The 5 A collector current rating is also lower than the 6 A specification of BD244C. TIP127 is suitable for applications where high current gain is beneficial and the electrical differences are acceptable.

Q: Are all substitute parts available in the same package? A: All substitute parts use TO-220-3 through-hole packaging, maintaining mechanical compatibility with BD244C. TIP42C-BP uses TO-220AB variant, which is mechanically compatible with TO-220-3 in standard through-hole applications.

Q: What compliance certifications apply to all substitute parts? A: All substitute parts are ROHS3 compliant. BD244CG, TIP42CG, and TIP42C-BP carry REACH Unaffected status. TIP127 has Vendor Undefined REACH status.

Q: Which substitute part has the widest operating temperature range? A: BD244CG and TIP42CG both specify operating temperature range of -65°C to 150°C, compared to 150°C maximum for BD244C, TIP42C-BP, and TIP127.

Q: Can TIP42C-BP be used in high-power applications? A: TIP42C-BP is rated for 2 W maximum power dissipation, which is significantly lower than BD244C (65 W). Applications requiring sustained power dissipation above 2 W should use BD244CG or verify thermal management capability.