TIP33C-S Equivalent & Substitute Parts Reference

Part Overview

The TIP33C-S from Bourns Inc. is an NPN Darlington bipolar junction transistor (BJT) rated for 100 V collector-emitter breakdown voltage, 10 A maximum collector current, and 3.5 W maximum power dissipation. It is offered in a through-hole SOT-93 (TO-218-3) package configuration and is now classified as obsolete. Identifying possible alternatives is required for design continuity, replacement needs, and maintenance support when original parts are unavailable due to obsolescence.

Key Parameters

Manufacturer Part Number	Manufacturer	Transistor Type	Voltage - Collector Emitter Breakdown (Max)	Current - Collector (Ic) (Max)	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	ECCN	Inventory	Product Status
TIP33C-S	Bourns Inc.	NPN - Darlington	100 V	10 A	4V @ 2.5A, 10A	700µA	20 @ 3A, 4V	3.5 W	-65°C ~ 150°C (TJ)	Through Hole	TO-218-3	SOT-93	ROHS3 Compliant	EAR99	1001 Pcs	Obsolete

Substitute Part Grouping Explanation

Substitute parts are selected based strictly on the match of these key parameters: transistor type, maximum collector-emitter voltage, maximum collector current, Vce(sat) at defined test conditions, collector cutoff current, minimum DC current gain, power dissipation, operating temperature range, mounting type, and RoHS/ECCN compliance. Package configuration and supplier device package are also matched or noted for differences given their impact on integration and compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Transistor Type	Voltage - Collector Emitter Breakdown (Max)	Current - Collector (Ic) (Max)	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	ECCN	Inventory	Product Status
TIP33C-S	Bourns Inc.	NPN - Darlington	100 V	10 A	4V @ 2.5A, 10A	700µA	20 @ 3A, 4V	3.5 W	-65°C ~ 150°C (TJ)	Through Hole	TO-218-3	SOT-93	ROHS3 Compliant	EAR99	1001 Pcs	Obsolete
TIP33CG	onsemi	NPN	100 V	10 A	4V @ 2.5A, 10A	700µA	20 @ 3A, 4V	80 W	-65°C ~ 150°C (TJ)	Through Hole	TO-247-3	TO-247-3	ROHS3 Compliant	EAR99	1071 Pcs	Active

Engineering Selection Recommendations

The main part TIP33C-S is obsolete. The identified substitute part, TIP33CG, from onsemi is listed as active and ROHS3 Compliant with the same ECCN code of EAR99. Both have through-hole mounting and match on key electrical ratings. Differences in package type (TO-218-3/SOT-93 vs. TO-247-3) should be considered for mechanical compatibility with existing board layouts. The substitute part maintains compliance status and certification necessary for use as a replacement component.

Frequently Asked Questions (FAQ)

Q1: What are the most important parameters when selecting a substitute for TIP33C-S?
A1: The critical parameters are transistor type (NPN/Darlington), maximum collector-emitter voltage, maximum collector current, Vce(sat) at the specified test point, minimum DC current gain, collector current cutoff, power dissipation, operating temperature range, mounting method, package type, and RoHS/ECCN compliance.

Q2: Is the physical package of TIP33CG compatible with TIP33C-S?
A2: The TIP33C-S uses a TO-218-3 (SOT-93) package, while TIP33CG uses TO-247-3. Footprint and heat sink requirements should be reviewed for compatibility with the target PCB and assembly.

Q3: Are there differences in electrical specifications between TIP33C-S and TIP33CG?
A3: Both parts have identical collector-emitter voltage, collector current, Vce(sat), collector cutoff current, and DC current gain at specified test conditions. The substitute part has higher maximum power dissipation.

Q4: Does product status affect the choice between TIP33C-S and TIP33CG?
A4: Yes, TIP33C-S is obsolete. TIP33CG is active, making it the suitable replacement based on availability and compliance.

Q5: Is RoHS3 compliance maintained with the substitute part?
A5: Yes, both TIP33C-S and TIP33CG are ROHS3 Compliant.

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