TIP29B-S Equivalent & Substitute Parts Reference

Part Overview

The TIP29B-S is a Bipolar Junction Transistor (BJT) from Bourns Inc., categorized as an NPN transistor with a maximum collector-emitter voltage of 80 V, collector current of 1 A, and a power dissipation of 2 W. Offered in the TO-220-3 through-hole package, the TIP29B-S is classified as obsolete. Identifying compatible substitute parts is required for continued support and new designs due to its obsolescence.

Key Parameters

Parameter	Value
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	80 V
Current - Collector (Ic) (Max)	1 A
Vce Saturation (Max) @ Ib, Ic	700mV @ 125mA, 1A
Current - Collector Cutoff (Max)	300µA
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 1A, 4V
Power - Max	2 W
Mounting Type	Through Hole
Package / Case	TO-220-3
Supplier Device Package	TO-220
RoHS Status	ROHS3 Compliant
Operating Temperature	-65°C ~ 150°C (TJ)

Substitute Part Grouping Explanation

Substitute selection for the TIP29B-S is based strictly on the following key electrical and mechanical parameters:

Transistor type (NPN)
Maximum collector-emitter voltage (Vce)
Maximum collector current (Ic)
Maximum power dissipation
DC current gain (hFE) at specified test conditions
Collector cutoff current
Vce saturation voltage at specified Ib and Ic
Mounting type and package/case (TO-220-3 through-hole)
Compliance status (RoHS)
Operating temperature range

Only parts that meet or exceed all corresponding values and characteristics have been included as substitutes.

Parameter Comparison

Part Number	Manufacturer	Transistor Type	Vce Breakdown (Max)	Ic (Max)	Vce Saturation (Max) @ Ib, Ic	Collector Cutoff (Max)	hFE (Min) @ Ic, Vce	Power - Max	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Operating Temperature	Product Status
TIP29B-S	Bourns Inc.	NPN	80 V	1 A	700mV @ 125mA, 1A	300µA	15 @ 1A, 4V	2 W	Through Hole	TO-220-3	TO-220	ROHS3 Compliant	-65°C ~ 150°C (TJ)	Obsolete
TIP29BG	onsemi	NPN	80 V	1 A	700mV @ 125mA, 1A	300µA	15 @ 1A, 4V	2 W	Through Hole	TO-220-3	TO-220	ROHS3 Compliant	-65°C ~ 150°C (TJ)	Active

Engineering Selection Recommendations

Given the TIP29B-S product status is obsolete and TIP29BG is active, selection should be based on current manufacturer availability and compliance certifications. Both TIP29B-S and TIP29BG are ROHS3 compliant and meet the same moisture sensitivity level criteria. The substitute part, TIP29BG, is suitable for selection based solely on the provided product status and compliance parameters.

Frequently Asked Questions (FAQ)

Q1: What criteria are used to determine equivalency or substitution for TIP29B-S?
A1: Substitution is determined strictly by conforming electrical parameters (transistor type, maximum Vce, maximum Ic, hFE, power dissipation, Vce saturation, and collector cutoff) and mechanical parameters (package type, mounting type), as well as compliance status.

Q2: Are there differences in the package for substitute TIP29BG compared to TIP29B-S?
A2: Both TIP29B-S and TIP29BG use the same TO-220-3 package and the same mounting type (through hole).

Q3: Is RoHS compliance maintained with the substitute part?
A3: Both TIP29B-S and TIP29BG are ROHS3 compliant according to provided data.

Q4: Does the substitute part have the same electrical performance as the original?
A4: All provided electrical parameters related to substitution—Vce, Ic, Vce(sat), hFE, collector cutoff, and power dissipation—are equivalent between TIP29B-S and TIP29BG based on the data above.

Q5: What is the impact of product status on substitute part selection?
A5: Selection is guided by availability; since TIP29B-S is obsolete and TIP29BG is active, the substitute ensures supply continuity without deviation from the specified parameters.

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