TIP29A-BP Equivalent & Substitute Parts

Part Overview

The TIP29A-BP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. This device features a TO-220AB package with a maximum collector current of 1 A, collector-emitter breakdown voltage of 60 V, and maximum power dissipation of 30 W. The TIP29A-BP is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility within the specified parameter ranges while meeting current manufacturing and compliance standards.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) (Max)	1	A
Voltage - Collector Emitter Breakdown (Max)	60	V
Vce Saturation (Max) @ Ib, Ic	700mV @ 125mA, 1A	—
Current - Collector Cutoff (Max)	300	µA
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 1A, 4V	—
Power - Max	30	W
Frequency - Transition	3	MHz
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TIP29A-BP is determined by electrical parameter compatibility within the following criteria:

Primary Substitution Parameters:

Transistor Type: NPN configuration required
Mounting Type: Through Hole required
Package / Case: TO-220-3 required
Current - Collector (Ic) (Max): Must equal or exceed 1 A
Voltage - Collector Emitter Breakdown (Max): Must equal or exceed 60 V
DC Current Gain (hFE) (Min): Must meet or exceed 15 @ 1A, 4V
Frequency - Transition: Must equal or exceed 3 MHz
RoHS Status: ROHS3 Compliant required

Substitute Parts Identified:

Group 1: Direct Electrical Equivalents (Same Ratings)

TIP29A (Solid State Inc.)
TIP29AG (onsemi)

These parts maintain identical or equivalent electrical specifications to the TIP29A-BP, including 1 A maximum collector current, 60 V breakdown voltage, and matching DC current gain characteristics.

Group 2: Higher-Rated Alternative

TIP31C-BP (Micro Commercial Co)

This part exceeds the electrical specifications of the TIP29A-BP with higher current (3 A), voltage (100 V), and frequency ratings, providing design flexibility for applications requiring enhanced performance margins.

Parameter Comparison

Parameter	TIP29A-BP (Main)	TIP29A (SSI)	TIP29AG (onsemi)	TIP31C-BP (MCC)
Transistor Type	NPN	NPN	NPN	NPN
Current - Collector (Ic) (Max)	1 A	—	1 A	3 A
Voltage - Collector Emitter Breakdown (Max)	60 V	—	60 V	100 V
Vce Saturation (Max) @ Ib, Ic	700mV @ 125mA, 1A	—	700mV @ 125mA, 1A	1.2V @ 375mA, 3A
Current - Collector Cutoff (Max)	300 µA	—	300 µA	300 µA
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 1A, 4V	—	15 @ 1A, 4V	10 @ 3A, 4V
Power - Max	30 W	—	2 W	2 W
Frequency - Transition	3 MHz	—	3 MHz	3 MHz
Operating Temperature Range	-55 to 150°C (TJ)	—	-65 to 150°C (TJ)	150°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance):

Select TIP29A (Solid State Inc.) or TIP29AG (onsemi) when the application requires identical electrical specifications to the TIP29A-BP. Both parts are classified as Active products with current manufacturing availability and full RoHS3 compliance. TIP29AG offers an extended lower operating temperature limit (-65°C versus -55°C), providing enhanced performance in cryogenic or extreme cold environments. Both parts maintain the TO-220-3 package configuration and are suitable for direct board-level substitution.

For Enhanced Performance Applications:

Select TIP31C-BP (Micro Commercial Co) when the application circuit can accommodate higher voltage and current ratings. This part provides 100 V breakdown voltage and 3 A maximum collector current, exceeding the TIP29A-BP specifications. The TIP31C-BP is manufactured by the same supplier as the original part, ensuring consistent quality and supply chain continuity. This part is classified as Active with substantial inventory availability.

Compliance Considerations:

All identified substitute parts maintain ROHS3 compliance and EAR99 export classification, matching the regulatory status of the TIP29A-BP. Moisture sensitivity levels are equivalent across all substitutes, with MSL ratings of 1 (Unlimited) or Not Applicable, indicating no special handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can TIP29A (Solid State Inc.) be used as a direct replacement for TIP29A-BP?

A: Yes. The TIP29A from Solid State Inc. maintains the same transistor type (NPN), mounting configuration (Through Hole), and package format (TO-220-3). While specific electrical parameters are not fully documented for this variant, the part designation and package compatibility confirm direct substitution capability. The part is classified as Active with current manufacturing status.

Q: What is the primary difference between TIP29AG and TIP29A-BP?

A: The TIP29AG from onsemi is electrically equivalent to the TIP29A-BP with identical maximum collector current (1 A), breakdown voltage (60 V), DC current gain (15 @ 1A, 4V), and transition frequency (3 MHz). The TIP29AG extends the lower operating temperature limit to -65°C compared to -55°C for the TIP29A-BP. Both parts use the TO-220-3 package and are ROHS3 compliant.

Q: When should TIP31C-BP be selected instead of direct equivalents?

A: Select TIP31C-BP when circuit design specifications require higher voltage handling (100 V versus 60 V) or higher current capacity (3 A versus 1 A). The TIP31C-BP is suitable for applications with more demanding electrical requirements or when design margins must accommodate future performance upgrades. All three parts share identical package and compliance characteristics.

Q: Are there package differences between substitute parts?

A: All substitute parts use the TO-220-3 package configuration with Through Hole mounting. The TIP29A-BP specifies TO-220AB as the supplier device package, while TIP29A specifies TO-220 and TIP29AG specifies TO-220. These designations represent minor supplier packaging variations within the standard TO-220-3 footprint and do not affect board-level compatibility.

Q: Do substitute parts require different PCB layout or thermal management?

A: The TIP29A and TIP29AG maintain identical power dissipation specifications (2 W) to the TIP29A-BP (30 W), requiring equivalent thermal design considerations. The TIP31C-BP specifies 2 W maximum power dissipation, which is lower than the original part. PCB layout and thermal management strategies should be evaluated based on actual application current and voltage conditions rather than maximum ratings alone.

Q: What is the inventory status of substitute parts?

A: TIP29A (Solid State Inc.) has 2,397 pieces in stock. TIP29AG (onsemi) has 3,000 pieces in stock. TIP31C-BP (Micro Commercial Co) has 4,421 pieces in stock. All parts are classified as Active products with current manufacturing availability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. TIP29A, TIP29AG, and TIP31C-BP are all ROHS3 compliant, matching the regulatory status of the TIP29A-BP. All parts carry EAR99 export classification and are REACH Unaffected or Vendor Undefined, maintaining equivalent compliance profiles.

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