TIP48TU Equivalent & Substitute Parts

Part Overview

The TIP48TU is an NPN bipolar junction transistor manufactured by onsemi, designed for general-purpose switching and amplification applications. This device features a 300 V collector-emitter breakdown voltage rating, 1 A maximum collector current, and 2 W power dissipation capability in a Through Hole TO-220-3 package. The TIP48TU is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain electrical performance across voltage, current, gain, and frequency parameters while ensuring mechanical compatibility with existing board layouts.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	300	V
Current - Collector (Ic) (Max)	1	A
Power - Max	2	W
Frequency - Transition	10	MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 300mA, 10V	—
Vce Saturation (Max) @ Ib, Ic	1V @ 200mA, 1A	V
Current - Collector Cutoff (Max)	1	mA
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—

Substitute Part Grouping Explanation

Substitution of the TIP48TU is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Transistor type: NPN configuration
Voltage rating: 300 V collector-emitter breakdown voltage (VCEO)
Current rating: 1 A maximum collector current (Ic)
Power dissipation: 2 W maximum
Frequency response: 10 MHz transition frequency (fT)
DC current gain: Minimum 30 hFE at specified bias conditions
Saturation characteristics: 1 V maximum VCE(sat) at rated conditions
Leakage current: 1 mA maximum collector cutoff current (ICEO)

Mechanical Equivalence Criteria:

Package type: TO-220-3 through-hole configuration
Pin compatibility: Direct lead-to-lead correspondence

The TIP48G meets all specified electrical parameters and maintains mechanical compatibility through identical TO-220-3 packaging. The substitute part is qualified for direct replacement in applications where the TIP48TU was originally specified.

Parameter Comparison

Parameter	TIP48TU	TIP48G	Match
Transistor Type	NPN	NPN	✓
Voltage - Collector Emitter Breakdown (Max)	300 V	300 V	✓
Current - Collector (Ic) (Max)	1 A	1 A	✓
Power - Max	2 W	2 W	✓
Frequency - Transition	10 MHz	10 MHz	✓
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 300mA, 10V	30 @ 300mA, 10V	✓
Vce Saturation (Max) @ Ib, Ic	1V @ 200mA, 1A	1V @ 200mA, 1A	✓
Current - Collector Cutoff (Max)	1 mA	1 mA	✓
Mounting Type	Through Hole	Through Hole	✓
Package / Case	TO-220-3	TO-220-3	✓
Product Status	Obsolete	Active	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓

Engineering Selection Recommendations

The TIP48G is the direct parametric equivalent for the obsolete TIP48TU. Selection of the TIP48G is supported by the following factors:

Product Status: The TIP48G maintains active production status with onsemi, ensuring long-term availability and supply chain continuity. The TIP48TU is classified as obsolete, making the TIP48G the appropriate choice for new designs and production continuity.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying current environmental and regulatory requirements for electronic component procurement.

Electrical Performance: Complete parametric equivalence across voltage, current, power, frequency, and gain specifications ensures functional interchangeability without circuit redesign or performance degradation.

Mechanical Compatibility: Identical TO-220-3 through-hole packaging permits direct substitution on existing printed circuit boards without layout modification.

The TIP48G is the qualified replacement for the TIP48TU in all applications where the original part was specified.

Frequently Asked Questions (FAQ)

Q: Can the TIP48G be used as a direct replacement for the TIP48TU without circuit modifications?

A: Yes. The TIP48G is a parametric equivalent with identical electrical ratings and mechanical packaging. Direct substitution is supported across all specified parameters.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching the following parameters: NPN transistor type, 300 V VCEO rating, 1 A Ic maximum, 2 W power rating, 10 MHz transition frequency, 30 hFE minimum gain, 1 V VCE(sat) saturation voltage, and 1 mA ICEO leakage current.

Q: Are there packaging differences between the TIP48TU and TIP48G?

A: Both parts use TO-220-3 through-hole packaging. The TIP48TU is supplied in standard packaging, while the TIP48G is supplied in tube packaging. Pin configuration and mechanical dimensions are identical, permitting direct board-level substitution.

Q: Why is the TIP48TU classified as obsolete?

A: The TIP48TU has been discontinued by onsemi. The TIP48G represents the active production equivalent and is the recommended part for new designs and ongoing production requirements.

Q: Are regulatory certifications maintained with the TIP48G?

A: Yes. The TIP48G maintains ROHS3 compliance and REACH unaffected status, identical to the TIP48TU. No regulatory impact results from substitution.

Q: What is the operating temperature range for the TIP48G?

A: The TIP48G operates across a junction temperature range of −65°C to 150°C, supporting the full industrial temperature spectrum for through-hole transistor applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message