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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi TIP33C

Name: TIP33C
Brand: onsemi
SKU: TIP33C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TIP33C

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-218-3

Datasheet:: TIP33C.pdf

Description:: TRANS NPN 100V 10A SOT-93

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TIP33C from onsemi is an NPN silicon power transistor designed for high-current switching and linear amplifier applications, with 100 V V_CEO, 10 A continuous collector current, 80 W power dissipation at T_C = 25°C, and TO-247 package. It serves as a robust output stage device in audio amplifiers, motor drivers, and DC-DC converter switches.

For engineers reviewing the TIP33C datasheet, pinout, applications, or equivalent options, key selection criteria include safe operating area (SOA) limits at elevated case temperatures, V_CE(sat) at 10 A/2.5 A drive, h_FE consistency across 1–10 A, and thermal resistance R_JC = 1.56°C/W for heatsink interface design.

Technical Context

The TIP33C operates as a bipolar junction transistor with fixed-base current control and forward-biased PN junctions. Its SOA is defined by thermal limit, bonding wire limit, and secondary breakdown-validated under clamped reverse-bias conditions and pulse-tested at 300 µs width, 2% duty cycle.

It exhibits h_FE = 40–100 at I_C = 1.0 A and drops to 20–100 at I_C = 3.0 A, with f_T = 3.0 MHz at I_C = 0.5 A, V_CE = 10 V, indicating suitability for audio-frequency switching but not RF operation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - Maximum collector-emitter voltage before breakdown under open-base condition; sets upper rail limit in switch-mode designs.
I_C (cont.)	10 A - Continuous collector current rating at T_C = 25°C; derates linearly above 25°C per 0.64 W/°C.
P_D	80 W - Total device dissipation at T_C = 25°C; requires heatsink with R_TH ≤ 1.56°C/W to sustain full power.
V_CE(sat)	1.0–4.0 V - Saturation voltage range across 3–10 A load; impacts conduction loss and thermal rise in switching circuits.
h_FE	20–100 - DC current gain spread at I_C = 1–3 A; necessitates base drive margining in production designs.
f_T	3.0 MHz - Transition frequency at I_C = 0.5 A; confirms usable bandwidth up to ~100 kHz for linear amplification.
R_JC	1.56 °C/W - Junction-to-case thermal resistance; defines minimum thermal interface performance required for reliable 80 W operation.

Pinout & Package

Package: TO-247 (Case 340L, Style 3), Pb-free, epoxy meets UL 94 V-0 at 0.125 in thickness. Mounting surface is electrically connected to collector (Pin 2 and Pin 4).

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input terminal; requires ≥2.5 A peak drive for full 10 A switching with low V_CE(sat).
2	Collector	Main high-side current path; electrically tied to metal tab and Pin 4; must be isolated from heatsink unless common-collector topology.
3	Emitter	Low-side return path; referenced to ground in common-emitter configurations; carries full load current.
4	Collector	Second collector connection for enhanced current handling and thermal spreading; shares same node as Pin 2.

Key Features

Feature	Design Value
ESD robustness	Machine Model >400 V / Human Body Model >8000 V - Enables handling without special ESD controls during assembly.
UL 94 V-0 epoxy	Flame-retardant encapsulation at 0.125 in thickness - Meets safety standards for industrial power equipment housings.
Secondary breakdown immunity	Validated SOA under clamped reverse-bias - Supports reliable turn-off in inductive switching without destructive avalanche.
Pb-free construction	RoHS-compliant "G" suffix marking - Aligns with global environmental compliance requirements for OEM production.

Applications

Audio Power Amplifier Output Stage	DC Motor Drive H-Bridge Leg
Use Scenario: Final push-pull output pair in Class AB audio amplifiers delivering 20–100 W into 4–8 Ω loads. IC Role / Device Role / Timing Role: NPN power switch providing current sourcing capability; paired with complementary PNP (e.g., TIP34C) for bidirectional drive. Use Value: 100 V V_CEO supports ±40 V rails; 10 A I_C enables 80 W continuous output; SOA validated to 100°C case temperature ensures reliability under sustained clipping.	Use Scenario: High-side or low-side switch in brushed DC motor drivers for industrial actuators (24–48 V, 5–8 A). IC Role / Device Role / Timing Role: Linear or PWM-controlled power transistor regulating motor current and direction via H-bridge configuration. Use Value: Low V_CE(sat) (≤1.0 V @ 3 A) minimizes conduction loss; 80 W PD allows short-duration stall current handling; TO-247 package enables direct bolt-down heatsinking.
Linear Regulator Pass Element	Switch-Mode Power Supply Switch
Use Scenario: Series pass transistor in adjustable linear regulators supplying 3–12 V at up to 5 A for analog instrumentation. IC Role / Device Role / Timing Role: Voltage-controlled current source dissipating excess input-output differential as heat. Use Value: h_FE ≥40 at 1 A ensures stable base drive; R_JC = 1.56°C/W enables thermal management with compact heatsinks; V_CEO = 100 V accommodates wide input ranges.	Use Scenario: Primary switch in offline flyback or forward converters up to 100 W, operating at ≤100 kHz. IC Role / Device Role / Timing Role: Hard-switched power transistor turning on/off under microcontroller or PWM controller timing. Use Value: Verified SOA at 300 µs pulse width supports safe energy handling during turn-off; f_T = 3.0 MHz ensures adequate gain at switching frequencies.

Audio Power Amplifier Output Stage

DC Motor Drive H-Bridge Leg

Use Scenario: Final push-pull output pair in Class AB audio amplifiers delivering 20–100 W into 4–8 Ω loads.

IC Role / Device Role / Timing Role: NPN power switch providing current sourcing capability; paired with complementary PNP (e.g., TIP34C) for bidirectional drive.

Use Value: 100 V V_CEO supports ±40 V rails; 10 A I_C enables 80 W continuous output; SOA validated to 100°C case temperature ensures reliability under sustained clipping.

Use Scenario: High-side or low-side switch in brushed DC motor drivers for industrial actuators (24–48 V, 5–8 A).

IC Role / Device Role / Timing Role: Linear or PWM-controlled power transistor regulating motor current and direction via H-bridge configuration.

Use Value: Low V_CE(sat) (≤1.0 V @ 3 A) minimizes conduction loss; 80 W PD allows short-duration stall current handling; TO-247 package enables direct bolt-down heatsinking.

Linear Regulator Pass Element

Switch-Mode Power Supply Switch

Use Scenario: Series pass transistor in adjustable linear regulators supplying 3–12 V at up to 5 A for analog instrumentation.

IC Role / Device Role / Timing Role: Voltage-controlled current source dissipating excess input-output differential as heat.

Use Value: h_FE ≥40 at 1 A ensures stable base drive; R_JC = 1.56°C/W enables thermal management with compact heatsinks; V_CEO = 100 V accommodates wide input ranges.

Use Scenario: Primary switch in offline flyback or forward converters up to 100 W, operating at ≤100 kHz.

IC Role / Device Role / Timing Role: Hard-switched power transistor turning on/off under microcontroller or PWM controller timing.

Use Value: Verified SOA at 300 µs pulse width supports safe energy handling during turn-off; f_T = 3.0 MHz ensures adequate gain at switching frequencies.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJE13009	V_CEO = 400 V, I_C = 12 A, R_JC = 1.25°C/W, TO-247 package	Higher voltage rating suits universal-input SMPS; higher f_T (~4 MHz) improves high-frequency switching efficiency	Preferred when input voltage exceeds 200 VAC or faster switching is required; verify base drive compatibility due to higher h_FE spread.
TIP3055	V_CEO = 60 V, I_C = 15 A, P_D = 90 W, TO-218 package, non-Pb-free option available	Lower voltage rating limits use to ≤60 V systems; larger die enables higher surge current tolerance	Selected for cost-sensitive 12–48 V motor drives where 100 V margin is unnecessary; note TO-218 mounting differs from TO-247 footprint.

Compared with MJE13009 and TIP3055, the TIP33C offers balanced 100 V/10 A capability in a Pb-free TO-247 package with documented SOA at 100°C case temperature-making it optimal for mid-voltage industrial amplifiers and regulated supplies where voltage headroom and thermal predictability are critical.

Availability

TIP33C is available at Aetrix Electronics and suitable for audio amplifier output stages, DC motor drive circuits, and linear regulator pass elements requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TIP33C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.

The TIP33C belongs to onsemi's legacy high-power bipolar transistor family, engineered for ruggedized linear and switching applications in industrial power electronics where reliability under thermal stress and SOA integrity are primary design constraints.

FAQ

What is the maximum continuous collector current rating for the TIP33C?

The TIP33C has a maximum continuous collector current (I_C) rating of 10 A at case temperature T_C = 25°C. This rating decreases linearly with rising case temperature at 0.64 W/°C derating, meaning usable current drops to approximately 7.5 A at T_C = 65°C. The TIP33C datasheet specifies this under "Maximum Ratings" and confirms it with SOA curves showing thermal and secondary breakdown limits.

Does the TIP33C have a built-in diode or protection features?

No, the TIP33C is a discrete NPN bipolar junction transistor without integrated protection diodes, thermal shutdown, or current limiting. It relies entirely on external circuitry-such as flyback diodes across inductive loads and base current limiting resistors-for safe operation. Its ESD ratings (HBM >8 kV, MM >400 V) reflect process-level robustness, not functional protection circuitry.

Can the TIP33C be used in parallel configurations?

Yes, the TIP33C can be operated in parallel for higher current capacity, but requires emitter ballasting resistors (typically 0.1–0.5 Ω) to ensure current sharing due to h_FE variation and thermal runaway risk. The device's positive temperature coefficient of V_BE aids self-balancing, but mismatched thermal mounting or unequal base drive will cause uneven loading. Parallel use is documented in onsemi application notes for linear regulators and audio outputs.

What is the safe operating area (SOA) limitation for the TIP33C at 100°C case temperature?

At T_C = 100°C, the TIP33C's forward-bias SOA is limited by thermal constraints to approximately 4 A at 20 V, 2 A at 40 V, and 1 A at 60 V-per Figure 3 in the official datasheet. These boundaries assume proper heatsinking and exclude secondary breakdown effects, which remain valid only under clamped reverse-bias conditions and pulse widths ≤300 µs.

Is the TIP33C pin-compatible with the TIP33A or TIP33B variants?

Yes, the TIP33C is pin-compatible with TIP33A and TIP33B in the same TO-247 package, sharing identical pinout (Base–Collector–Emitter–Collector) and mechanical outline. However, they differ in voltage rating: TIP33A is rated for 60 V V_CEO, TIP33B for 80 V, and TIP33C for 100 V. Substituting TIP33C for lower-voltage variants is safe; substituting lower-voltage versions for TIP33C risks breakdown in 100 V applications.

TIP33C Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-218-3

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 10 A

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 4V @ 2.5A, 10A

Current - Collector Cutoff (Max):: 700µA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 20 @ 3A, 4V

Power - Max:: 80 W

Frequency - Transition:: 3MHz

Operating Temperature:: -65°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: SOT-93

TIP33C FAQ

1.How can I place an order for TIP33C through Aetrix?

Please submit a Request for Quotation (RFQ) for TIP33C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TIP33C reliable?

The price and inventory of TIP33C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TIP33C is usually 5 days.

3.What payment methods are accepted for TIP33C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TIP33C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TIP33C?

TIP33C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TIP33C order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TIP33C?

For technical support, including TIP33C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TIP33C requirements.

6.How does Aetrix verify that TIP33C is sourced from the original manufacturer or authorized distributors?

All TIP33C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TIP33C meets industry standards.

7.What is the process for return or replacement of TIP33C?

All TIP33C units undergo pre-shipment inspection (PSI). If there is an issue with TIP33C, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TIP33C part is unused and in its original packaging.

Return procedure for TIP33C:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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