TIP49TU Equivalent & Substitute Parts

Part Overview

The TIP49TU is an NPN bipolar junction transistor manufactured by onsemi, rated for 350 V collector-emitter breakdown voltage and 1 A maximum collector current in a TO-220-3 through-hole package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. The TIP49TU delivers 2 W maximum power dissipation with a 10 MHz transition frequency, suitable for general-purpose switching and amplification applications requiring moderate voltage and current ratings.

Substiute Parts

TIP49TU

onsemiIn Stock: 817TIP49TU Datasheet

Current PartRFQ

TIP49

NTE Electronics, IncIn Stock: 1700TIP49 Datasheet

DirectRFQ

TIP50

NTE Electronics, IncIn Stock: 4561TIP50 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TIP49TU is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Transistor Type: NPN
• Voltage - Collector Emitter Breakdown (Max): ≥ 350 V
• Current - Collector (Ic) (Max): ≥ 1 A
• DC Current Gain (hFE) (Min): ≥ 30 @ 300mA, 10V
• Vce Saturation (Max): ≤ 1V @ 200mA, 1A
• Frequency - Transition: ≥ 10 MHz
• Mounting Type: Through Hole
• Package / Case: TO-220-3

Substitute Parts Identified:

1. TIP49 (NTE Electronics, Inc) — Direct equivalent with enhanced power rating (40 W vs. 2 W) and extended operating temperature range (-65°C to 150°C). Meets all electrical parameters with identical collector current, voltage, and gain specifications.

2. TIP50 (NTE Electronics, Inc) — Similar substitute with elevated voltage rating (400 V vs. 350 V) and enhanced power rating (40 W vs. 2 W). Maintains identical collector current, gain, and frequency specifications. Suitable for applications requiring higher voltage margin.

Parameter Comparison

Engineering Selection Recommendations

TIP49 (NTE Electronics, Inc) is the direct functional equivalent to the TIP49TU. This substitute maintains identical electrical specifications across all critical parameters: 350 V breakdown voltage, 1 A collector current, 30 minimum DC current gain, and 10 MHz transition frequency. The TIP49 offers superior thermal performance with a 40 W power rating compared to the TIP49TU's 2 W rating, and provides an extended operating temperature range of -65°C to 150°C. The part is currently in active production status, ensuring procurement availability. Selection of TIP49 is appropriate for direct replacement in existing designs without circuit modification.

TIP50 (NTE Electronics, Inc) serves as a higher-voltage alternative when design margins or application requirements demand elevated voltage capability. The TIP50 maintains all other electrical parameters identical to the TIP49TU while providing 400 V collector-emitter breakdown voltage, representing a 50 V increase over the original specification. This substitute is suitable for applications where voltage stress margins require enhancement or where system voltage specifications exceed 350 V. The TIP50 is currently in active production status.

Both substitute parts are manufactured by NTE Electronics, Inc, carry EAR99 export classification, and are packaged in TO-220-3 through-hole format compatible with existing PCB layouts. Both substitutes are RoHS non-compliant, consistent with the obsolete status of the original TIP49TU component.

Frequently Asked Questions (FAQ)

Q: Can the TIP49 directly replace the TIP49TU in existing designs?

A: Yes. The TIP49 maintains identical electrical specifications for collector-emitter breakdown voltage (350 V), maximum collector current (1 A), DC current gain (30 minimum @ 300mA, 10V), and transition frequency (10 MHz). Both devices use the TO-220-3 through-hole package. No circuit modifications are required.

Q: What is the primary difference between the TIP49 and TIP50 substitutes?

A: The TIP50 provides a higher collector-emitter breakdown voltage rating of 400 V compared to the TIP49's 350 V. All other electrical parameters remain identical. Selection between these substitutes depends on application voltage requirements.

Q: Are the substitute parts available in the same package as the TIP49TU?

A: Yes. Both the TIP49 and TIP50 are supplied in TO-220-3 through-hole packages, identical to the TIP49TU. PCB layout and mounting compatibility are maintained.

Q: What is the significance of the enhanced power rating in the substitute parts?

A: The TIP49 and TIP50 both feature 40 W maximum power dissipation compared to the TIP49TU's 2 W rating. This represents improved thermal capability and allows operation at higher power levels within the same current and voltage envelope. Designs operating at the original 2 W specification remain fully compatible.

Q: Are there compliance or regulatory differences between the TIP49TU and its substitutes?

A: The TIP49TU is classified as obsolete, while both TIP49 and TIP50 substitutes are in active production status. All three parts carry EAR99 export classification. The substitute parts are RoHS non-compliant, consistent with the original component's classification.

Q: Can the TIP50 be used in applications designed for the TIP49TU?

A: Yes. The TIP50 maintains all electrical specifications of the TIP49TU while providing enhanced voltage capability (400 V vs. 350 V). This represents a conservative substitution suitable for any application originally specified for the TIP49TU.

Q: What operating temperature range should be considered when selecting a substitute?

A: The TIP49TU specifies a maximum junction temperature of 150°C. Both substitute parts (TIP49 and TIP50) extend the operating range to -65°C to 150°C, providing broader environmental compatibility. Applications operating within the original 150°C maximum specification remain fully supported.