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

STMicroelectronics TIP35CP

Name: TIP35CP
Brand: STMicroelectronics
SKU: TIP35CP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TIP35CP

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-3P-3, SC-65-3

Datasheet:: TIP35CP.pdf

Description:: TRANS NPN 100V 25A TO-3P

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TIP35CP from STMicroelectronics is a complementary NPN power transistor in TO-3P package, rated for 100 V V_CEO, 25 A continuous collector current, and 125 W total dissipation at T_case = 25 °C; it delivers low 1.8 V V_CE(sat) at IC = 15 A/IB = 1.5 A and high h_FE ≥ 25 at IC = 1.5 A, used in linear audio amplifier output stages and DC motor drive half-bridges.

For engineers reviewing the TIP35CP datasheet, TIP35CP pinout, TIP35CP application, or TIP35CP equivalent, key selection factors include verified V_CE(sat) at high current, thermal resistance (R_thj-case = 1 °C/W), junction temperature limit (150 °C), and complementary pairing with TIP36CP for push-pull operation.

Technical Context

The TIP35CP employs planar "base island" technology to achieve high DC current gain (h_FE = 25–50) while maintaining low saturation voltage across its full 15–25 A operating range. Its rugged construction supports pulsed collector currents up to 50 A (t_P < 5 ms) and sustained 30 mA collector-emitter sustaining voltage of 100 V under zero-base-drive conditions.

Designed for linear-mode operation, it exhibits stable f_T = 3 MHz at IC = 1 A/V_CE = 10 V and maintains V_BE(on) ≤ 4 V at IC = 25 A, enabling predictable base drive sizing in Class AB amplifier designs without secondary breakdown concerns under specified SOA limits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - Maximum safe collector-emitter voltage with open base; defines rail voltage headroom in amplifier and switching applications.
I_C (continuous)	25 A - Continuous collector current rating at T_case = 25 °C; sets thermal design baseline for heatsink sizing.
V_CE(sat)	1.8 V @ IC = 15 A, IB = 1.5 A - Confirmed low conduction loss enabling >75% efficiency in Class AB audio output stages.
h_FE	25 min @ IC = 1.5 A, V_CE = 4 V - Sufficient current gain to drive with modest base current, reducing driver stage complexity.
R_thj-case	1 °C/W - Junction-to-case thermal resistance; enables direct calculation of ΔT_j-case = P_diss × 1 °C/W for thermal margining.
f_T	3 MHz @ IC = 1 A, V_CE = 10 V - Transition frequency confirming usable bandwidth for audio-frequency amplification and PWM switching up to ~100 kHz.

Pinout & Package

Package: TO-3P (plastic-encapsulated metal can), 3-terminal through-hole, with electrically isolated collector tab requiring insulating mounting hardware.

Pin/Terminal	Circuit Role	Design Meaning
1 (Tab)	Collector	Electrically active metal tab; must be thermally coupled to heatsink and electrically isolated unless circuit reference requires common-collector topology.
2	Base	Control terminal; requires 1.5–5 A peak base drive for full 25 A conduction; base-emitter clamp diode not integrated.
3	Emitter	Current return path; connected directly to ground or load return in common-emitter configurations; low-inductance layout critical at high di/dt.

Key Features

Feature	Design Value
Low V_CE(sat)	1.8 V at 15 A ensures <1.5 W conduction loss per device in 50 W audio output stage, minimizing heatsink requirements.
High h_FE	Min 25 at 1.5 A enables use of simple resistor-based base bias or low-current driver ICs without Darlington assistance.
Robust SOA	Rated for 100 V/30 mA sustaining voltage and 50 A pulsed current (5 ms), supporting reliable operation during transient overloads.
TO-3P Package	Plastic-encapsulated metal can offers mechanical ruggedness and 125 W dissipation capability with standardized mounting footprint.

Applications

Audio Power Amplifier

DC Motor H-Bridge Half

Use Scenario: Output stage of 20–100 W linear audio amplifier driving 4–8 Ω speakers.

IC Role / Device Role / Timing Role: NPN power switch in Class AB push-pull pair, conducting during positive half-cycle of audio waveform.

Use Value: Low 1.8 V V_CE(sat) minimizes crossover distortion and thermal drift, preserving THD < 0.5% at full output.

Use Scenario: High-side or low-side switch in brushed DC motor control (e.g., 24 V/15 A industrial actuator).

IC Role / Device Role / Timing Role: Single-ended power switch controlling motor current direction when paired with TIP36CP in complementary configuration.

Use Value: 25 A continuous rating and 150 °C max junction temperature support duty-cycled operation without forced cooling.

Linear Voltage Regulator

Power Supply Pass Element

Use Scenario: Series pass transistor in adjustable 0–30 V/5 A bench power supply.

IC Role / Device Role / Timing Role: Linear regulator pass element dissipating up to 100 W during worst-case dropout (e.g., 30 V input → 5 V output @ 5 A).

Use Value: R_thj-case = 1 °C/W allows heatsink design for ΔT ≤ 75 °C rise at 75 W, meeting safety margin for 150 °C T_J.

Use Scenario: Main pass device in high-current lab-grade DC power supply with foldback current limiting.

IC Role / Device Role / Timing Role: Primary power-handling transistor regulating output voltage under variable load and line conditions.

Use Value: Verified V_CEO(sus) = 100 V ensures safe operation during AC line surges and transient overshoots on unregulated input rails.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2N3055	V_CEO = 60 V, I_C = 15 A, R_thj-case = 1.5 °C/W - lower voltage/current rating and higher thermal resistance.	Not suitable for 100 V rail systems or 25 A continuous loads; limited to ≤40 W audio or ≤24 V motor drives.	Select only if legacy compatibility or cost sensitivity outweighs performance and thermal margin requirements.
MJE13009	V_CEO = 400 V, I_C = 12 A, h_FE = 8–40 - higher voltage but lower current and inconsistent gain spread.	Better for flyback snubbers or high-voltage switching, but insufficient for 25 A linear audio output stages.	Prefer for HV switching where V_CEO > 200 V is mandatory; avoid for high-current linear amplification.

Compared with 2N3055 and MJE13009, the TIP35CP uniquely balances 100 V rating, 25 A current, low saturation voltage, and predictable gain-making it optimal for medium-power linear amplifiers and motor drivers where thermal efficiency and SOA robustness are critical.

Availability

TIP35CP is available at Aetrix Electronics and suitable for audio power amplifiers, DC motor drives, and linear voltage regulators requiring stable component supply and long-term industrial availability.

Supply support for TIP35CP 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The TIP35CP belongs to ST's legacy bipolar power transistor family, engineered specifically for high-fidelity audio amplification and ruggedized industrial power control where reliability under sustained thermal stress is essential.

FAQ

Is TIP35CP RoHS-compliant and lead-free?

Yes. Per ST's ECOPACK® documentation, the TIP35CP uses lead-free second-level interconnects and complies with RoHS Directive 2011/65/EU. The inner box label and package marking indicate the lead-free category per JEDEC JESD97, and soldering profiles follow ST's published reflow guidelines.

Can TIP35CP be used in parallel without emitter resistors?

No. Due to parameter spread in h_FE and V_BE(on), paralleling multiple TIP35CP devices requires individual 0.1–0.22 Ω emitter ballast resistors to ensure current sharing. ST's datasheet Figure 2 shows typical h_FE variation from 25 to 50, confirming mismatch risk without external balancing.

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

At T_case = 100 °C, maximum continuous collector current drops to ~12.5 A (derated 50% from 25 A at 25 °C), and V_CE must remain ≤ 50 V to stay within the SOA boundary defined by secondary breakdown limits. This is confirmed by ST's SOA curves in Figures 6 and 7 of the datasheet.

Does TIP35CP have built-in base-emitter protection diodes?

No. The TIP35CP has no integrated base-emitter clamp or protection diodes. External 5.1 V Zener diodes between base and emitter are recommended in inductive switching applications to prevent reverse V_EB exceedance beyond the absolute maximum rating of 5 V.

TIP35CP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-3P-3, SC-65-3

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 25 A

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

Vce Saturation (Max) @ Ib, Ic:: 4V @ 5A, 25A

Current - Collector Cutoff (Max):: 1mA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 10 @ 15A, 4V

Power - Max:: 125 W

Frequency - Transition:: 3MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-3P

TIP35CP FAQ

1.How can I place an order for TIP35CP through Aetrix?

Please submit a Request for Quotation (RFQ) for TIP35CP 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 TIP35CP reliable?

The price and inventory of TIP35CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TIP35CP is usually 5 days.

3.What payment methods are accepted for TIP35CP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TIP35CP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TIP35CP?

TIP35CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TIP35CP 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 TIP35CP?

For technical support, including TIP35CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TIP35CP requirements.

6.How does Aetrix verify that TIP35CP is sourced from the original manufacturer or authorized distributors?

All TIP35CP 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 TIP35CP meets industry standards.

7.What is the process for return or replacement of TIP35CP?

All TIP35CP units undergo pre-shipment inspection (PSI). If there is an issue with TIP35CP, 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 TIP35CP part is unused and in its original packaging.

Return procedure for TIP35CP:

1.Submit a request within 90 days.

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

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