TIP49 SL Equivalent & Substitute Parts

Part Overview

The TIP49 SL is an NPN bipolar junction transistor manufactured by Central Semiconductor Corp, designed for general-purpose switching and amplification applications. This device operates at 350 V collector-emitter breakdown voltage with a maximum collector current of 1 A and 40 W power dissipation in a TO-220-3 through-hole package. The TIP49 SL is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	350 V
Current - Collector (Ic) (Max)	1 A
Power - Max	40 W
Frequency - Transition	10 MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 300mA, 10V
Vce Saturation (Max) @ Ib, Ic	1V @ 200mA, 1A
Current - Collector Cutoff (Max)	1 mA
Operating Temperature Range	-65°C to 150°C (TJ)
Package / Case	TO-220-3
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution of the TIP49 SL is determined by strict electrical and mechanical parameter matching within the NPN bipolar transistor category. The critical parameters governing substitution are:

Electrical Parameters:

Collector-emitter breakdown voltage (VCEO): minimum 350 V
Maximum collector current (Ic): 1 A or greater
Maximum power dissipation: 40 W or greater
DC current gain (hFE): 30 or greater at specified conditions
Transition frequency: 10 MHz or greater
Operating temperature range: -65°C to 150°C or wider

Mechanical Parameters:

Package type: TO-220-3 or compatible TO-220 variant
Mounting type: Through hole

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications with different packaging or compliance status) and manufacturer-recommended substitutes (enhanced electrical specifications within the same functional class).

Parameter Comparison

Parameter	TIP49 SL	TIP49 SL TIN/LEAD	TIP50
Manufacturer	Central Semiconductor Corp	Central Semiconductor Corp	NTE Electronics, Inc
Product Status	Obsolete	Active	Active
Transistor Type	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	350 V	350 V	400 V
Current - Collector (Ic) (Max)	1 A	1 A	1 A
Power - Max	40 W	40 W	40 W
Frequency - Transition	10 MHz	10 MHz	10 MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 300mA, 10V	30 @ 300mA, 10V	30 @ 300mA, 10V
Vce Saturation (Max) @ Ib, Ic	1V @ 200mA, 1A	1V @ 200mA, 1A	1V @ 200mA, 2A
Current - Collector Cutoff (Max)	1 mA	1 mA	1 mA
Operating Temperature Range	-65°C to 150°C (TJ)	-65°C to 150°C (TJ)	-65°C to 150°C (TJ)
Package / Case	TO-220-3	TO-220-3	TO-220-3
Mounting Type	Through Hole	Through Hole	Through Hole
RoHS Status	Not specified	RoHS non-compliant	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

TIP49 SL TIN/LEAD (Central Semiconductor Corp):

This part is a parametric equivalent to the obsolete TIP49 SL, offering identical electrical specifications and package configuration. The primary distinction is active product status, enabling continued procurement and supply chain support. This substitute is suitable for direct replacement in applications where the original TIP49 SL specifications are required. Both parts are RoHS non-compliant and share equivalent moisture sensitivity classification.

TIP50 (NTE Electronics, Inc):

The TIP50 is a manufacturer-recommended substitute with enhanced collector-emitter breakdown voltage (400 V versus 350 V) and improved saturation characteristics (2 A versus 1 A at specified saturation conditions). This part maintains electrical compatibility across all other critical parameters: 1 A maximum collector current, 40 W power dissipation, 10 MHz transition frequency, and identical DC current gain specifications. The TIP50 is suitable for applications requiring higher voltage margin or improved saturation performance within the same functional envelope. Both parts share identical package configuration, operating temperature range, and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can TIP49 SL TIN/LEAD be used as a direct replacement for the obsolete TIP49 SL?

A: Yes. The TIP49 SL TIN/LEAD is a parametric equivalent with identical electrical specifications, DC current gain, saturation voltage, and operating temperature range. Both parts use the TO-220-3 package. The primary difference is product status: TIP49 SL TIN/LEAD is active and available for procurement.

Q: What is the difference between TIP49 SL and TIP50?

A: The TIP50 has a higher collector-emitter breakdown voltage (400 V versus 350 V) and improved saturation characteristics (2 A versus 1 A at saturation). All other electrical parameters—maximum collector current, power dissipation, transition frequency, and DC current gain—are identical. Both use TO-220-3 packages.

Q: Is the TIP50 suitable for applications designed for the TIP49 SL?

A: Yes. The TIP50 meets or exceeds all electrical requirements of the TIP49 SL. The higher breakdown voltage provides additional design margin. Saturation performance is improved. The identical package and operating temperature range ensure mechanical and thermal compatibility.

Q: Are there packaging differences between these substitutes?

A: The TIP49 SL and TIP49 SL TIN/LEAD both use TO-220-3 through-hole packages. The TIP50 uses a TO-220 package variant, which is mechanically compatible with TO-220-3 footprints. All three parts are through-hole mounted devices.

Q: What is the moisture sensitivity level for these parts?

A: All three parts—TIP49 SL, TIP49 SL TIN/LEAD, and TIP50—have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are these parts RoHS compliant?

A: The TIP49 SL TIN/LEAD and TIP50 are both RoHS non-compliant. If RoHS compliance is required, alternative parts outside this substitution group must be evaluated.

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