TIP47-BP Equivalent & Substitute Parts

Part Overview

The TIP47-BP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, rated for 250V collector-emitter breakdown voltage and 1A maximum collector current. This through-hole TO-220AB packaged device is designed for general-purpose switching and amplification applications requiring moderate power dissipation of 2W. The TIP47-BP is classified as obsolete, necessitating identification of equivalent substitute components that maintain electrical and mechanical compatibility with existing circuit designs.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	250	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
Operating Temperature Range	-65 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—

Substitute Part Grouping Explanation

Substitution of the TIP47-BP is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Transistor polarity: NPN
Maximum collector-emitter breakdown voltage: 250V
Maximum collector current: 1A
DC current gain (hFE): minimum 30 @ 300mA, 10V
Vce saturation: 1V @ 200mA, 1A
Collector cutoff current: 1mA maximum
Transition frequency: 10MHz

Mechanical Equivalence Criteria:

Mounting type: Through Hole
Package type: TO-220-3 pin configuration

Compliance Considerations:

RoHS status and REACH compliance affect long-term supply chain viability
Product status (Active vs. Obsolete) determines availability and production continuity

Substitute parts must satisfy all electrical parameters within the specified tolerances and maintain identical mechanical pinout compatibility. Power dissipation rating may exceed the original specification without affecting substitution validity, provided all other parameters are met or exceeded.

Parameter Comparison

Parameter	TIP47-BP (Micro Commercial Co)	TIP47 (NTE Electronics)	TIP47G (onsemi)
Transistor Type	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	250V	250V	250V
Current - Collector (Ic) (Max)	1A	1A	1A
Power - Max	2W	40W	2W
Frequency - Transition	10MHz	10MHz	10MHz
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, 1A
Current - Collector Cutoff (Max)	1mA	1mA	1mA
Operating Temperature Range	-65 to 150°C (TJ)	-65 to 150°C (TJ)	-65 to 150°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3	TO-220-3
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

TIP47G (onsemi) - Primary Substitute

The TIP47G is the preferred substitute for the obsolete TIP47-BP. This component satisfies all electrical parameters identically and maintains TO-220-3 through-hole package compatibility. The TIP47G is manufactured by onsemi, an active producer with established supply chain distribution. ROHS3 compliance status aligns with the original part specification, ensuring regulatory consistency in new designs and manufacturing environments. The part is available in tube packaging with 2056 units in current inventory.

TIP47 (NTE Electronics) - Secondary Substitute

The TIP47 manufactured by NTE Electronics meets all critical electrical specifications and maintains mechanical compatibility. This part features enhanced power dissipation capability (40W versus 2W), which provides additional thermal margin in applications where the original 2W rating is marginal. However, RoHS non-compliance status presents a regulatory consideration for applications subject to RoHS directives. This substitute is suitable for legacy system repairs and applications where RoHS compliance is not mandated. Inventory availability is substantial at 26200 units.

Selection Basis:

Substitution decisions are based on product status (Active vs. Obsolete), regulatory compliance certifications (RoHS3), and supply chain continuity. Both substitutes maintain electrical equivalence across all specified parameters. The TIP47G is recommended for new designs and applications requiring RoHS compliance. The TIP47 is suitable for applications where regulatory compliance is not a constraint and enhanced power dissipation is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the TIP47G directly replace the TIP47-BP in existing circuit boards?

A: Yes. The TIP47G maintains identical electrical specifications and TO-220-3 pinout configuration. No circuit modifications are required for direct substitution.

Q: What is the significance of the 40W power rating on the NTE TIP47 compared to the 2W rating on the original TIP47-BP?

A: Power rating indicates maximum thermal dissipation capability. The NTE TIP47 can dissipate up to 40W, while the original TIP47-BP is limited to 2W. In applications operating at or near the 2W limit, the higher-rated substitute provides additional thermal margin. This difference does not affect electrical performance in circuits designed for the original 2W specification.

Q: Why is RoHS compliance status important for substitution?

A: RoHS (Restriction of Hazardous Substances) compliance is a regulatory requirement in many markets. The TIP47-BP and TIP47G are ROHS3 compliant, while the NTE TIP47 is non-compliant. For applications subject to RoHS directives, the TIP47G is the appropriate substitute. For legacy systems or applications without RoHS requirements, the NTE TIP47 remains viable.

Q: Are there any differences in the TO-220-3 package between the three parts?

A: All three parts use the TO-220-3 package with identical pin configuration and mechanical dimensions. The TIP47-BP specifies TO-220AB supplier packaging, while the TIP47G specifies TO-220 supplier packaging. Both designations refer to the same three-pin TO-220 package standard. No mechanical adaptation is required.

Q: What is the difference between the TIP47 and TIP47G part numbers?

A: The TIP47 is a generic part number used by multiple manufacturers. The TIP47G is a specific onsemi designation. Both parts meet the same electrical specifications. The "G" suffix on the onsemi part indicates the manufacturer's internal classification. For procurement purposes, specify the full manufacturer part number (TIP47G for onsemi) to ensure correct component receipt.

Q: Can I use the TIP47 (NTE Electronics) in a new design requiring RoHS compliance?

A: No. The NTE TIP47 is RoHS non-compliant and is not suitable for new designs subject to RoHS directives. Use the TIP47G (onsemi) for RoHS-compliant applications.

Q: What is the inventory status of these substitute parts?

A: The TIP47G has 2056 units in stock. The NTE TIP47 has 26200 units in stock. Both parts are currently available for procurement. The original TIP47-BP has 908 units in stock but is classified as obsolete and should not be specified for new designs.

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