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onsemi TIP35AG
- Part No.:
- TIP35AG
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-247-3
- Datasheet:
-
TIP35AG.pdf
- Description:
- TRANS NPN 60V 25A TO-247-3
- Quantity:
- Payment:
- Shipping:
Inventory:60
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Product details
Overview
TIP35AG from onsemi is an NPN silicon power transistor designed for high-current switching and linear amplifier applications, featuring 25 A continuous collector current, 60 V collector-emitter sustaining voltage (VCEO(sus)), and 125 W total power dissipation at TC = 25°C - used in industrial motor controls, DC-DC converter output stages, and audio power amplifiers.
For engineers reviewing the TIP35AG datasheet, pinout, applications, or equivalent options, key selection criteria include safe operating area (SOA) compliance at 60 V/25 A, thermal resistance (RJC = 1.0 °C/W), DC current gain (hFE = 25–75 at IC = 1.5 A), saturation voltage (VCE(sat) ≤ 1.8 V at IC = 15 A, IB = 1.5 A), and Pb-free TO-218 (SOT-93) packaging.
Technical Context
The TIP35AG operates as a general-purpose NPN bipolar junction transistor with complementary PNP pairing via TIP36AG. Its forward-bias SOA is defined up to 60 V and 25 A under DC and pulsed conditions, with second-breakdown limits validated at 10% duty cycle and TC = 25°C.
It exhibits low leakage (ICEO ≤ 1.0 mA at VCE = 30 V), moderate frequency response (fT ≥ 3.0 MHz at IC = 1.0 A), and base-emitter on voltage of 2.0 V typical at IC = 15 A - enabling robust gate/base drive design in hard-switching topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO(sus) | 60 V - Maximum sustainable collector-emitter voltage before breakdown under specified test conditions (IC = 30 mA, IB = 0). |
| IC (Continuous) | 25 A - Continuous collector current rating defining maximum steady-state conduction capability at TC = 25°C. |
| PD | 125 W - Total power dissipation limit at case temperature 25°C; derates linearly above 25°C (1.0 °C/W junction-to-case thermal resistance). |
| hFE | 25–75 - DC current gain range at IC = 1.5 A, VCE = 4.0 V; supports predictable base drive sizing for linear and switching operation. |
| VCE(sat) | ≤1.8 V - Collector-emitter saturation voltage at IC = 15 A, IB = 1.5 A; determines conduction loss and heatsink sizing in saturated switch mode. |
| fT | ≥3.0 MHz - Current-gain bandwidth product at IC = 1.0 A, VCE = 10 V, f = 1.0 MHz; sets upper limit for small-signal amplification bandwidth. |
Pinout & Package
Package: SOT-93 (TO-218), 4-pin, Pb-free, with metal tab electrically connected to collector (pins 2 and 4). Mounting requires insulated hardware due to collector-tab connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal; requires ~1.5 A base current to saturate at 15 A collector load - dictates driver stage current capability. |
| 2 | Collector | Main high-current output node; internally tied to metal tab - mandates electrical isolation from heatsink unless collector referenced to chassis ground. |
| 3 | Emitter | Current return path; low-impedance connection critical for minimizing common-emitter loop inductance in switching applications. |
| 4 | Collector | Second collector terminal for enhanced current handling and thermal spreading; paralleled with pin 2 internally or externally per layout requirements. |
Key Features
| Feature | Design Value |
|---|---|
| High Safe Operating Area (SOA) | Rated for 60 V × 25 A DC operation with defined secondary breakdown limits - enables reliable use in unclamped inductive switching without snubbers. |
| Low Saturation Voltage | VCE(sat) ≤ 1.8 V at IC = 15 A ensures <27 W conduction loss - reduces heatsink volume and improves efficiency in Class AB amplifiers and SMPS output stages. |
| Robust Thermal Performance | RJC = 1.0 °C/W allows direct mounting to heatsink with minimal thermal interface resistance - supports compact thermal design in space-constrained industrial enclosures. |
| Pb-Free Construction | RoHS-compliant "G" suffix indicates lead-free plating and solderability compatible with standard reflow profiles - meets global environmental compliance requirements. |
Applications
| Industrial Motor Drive Stage | Linear Audio Power Amplifier |
|---|---|
|
Use Scenario: High-current H-bridge output stage driving 12–24 V DC brushed motors in factory automation systems. IC Role / Device Role / Timing Role: NPN power switch in totem-pole configuration; handles bidirectional 20 A peak currents with fast turn-on (tr ≤ 20 ns) and controlled turn-off. Use Value: SOA-rated 60 V withstand enables operation across full supply rail with margin against back-EMF spikes; low VCE(sat) minimizes thermal stress during continuous PWM conduction. |
Use Scenario: Output stage of 50 W stereo audio amplifier delivering low-distortion signal to 4 Ω speakers. IC Role / Device Role / Timing Role: Linear-mode NPN emitter-follower; biased in Class AB to reduce crossover distortion while maintaining thermal stability. Use Value: hFE ≥ 25 at 1.5 A ensures stable bias current setting; RJC = 1.0 °C/W supports heatsink-limited thermal design without forced air cooling. |
| DC-DC Converter Output Switch | Uninterruptible Power Supply (UPS) Inverter Stage |
|
Use Scenario: Primary-side switching element in 12 V input, 5 V/20 A buck converter for telecom power systems. IC Role / Device Role / Timing Role: Hard-switched NPN transistor operating at ≤100 kHz; driven by dedicated base driver IC with active turn-off assist. Use Value: fT ≥ 3.0 MHz ensures adequate small-signal gain at switching frequencies; low ICEO (≤1.0 mA) prevents leakage-induced idle current drift. |
Use Scenario: Half-bridge leg in 24 V DC to 120 V AC modified sine-wave UPS inverter. IC Role / Device Role / Timing Role: High-current NPN switch paired with TIP36AG PNP; commutated at 50/60 Hz with soft-start and overload protection. Use Value: 90 mJ unclamped inductive energy rating (ESB) accommodates transformer flyback energy without avalanche stress; dual-collector pins simplify high-current PCB routing. |
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 | Higher VCEO = 400 V, lower IC = 12 A, TO-220 package; fT = 4 MHz but RJC = 3.0 °C/W. | Better for high-voltage flyback or ZVS converters; unsuitable for 25 A continuous loads or low-thermal-resistance requirements. | Select MJE13009 only when >300 V blocking is required and current demand stays below 12 A - not a drop-in replacement for TIP35AG. |
| 2N3055G | Legacy TO-3 device; VCEO = 60 V, IC = 15 A, PD = 115 W, RJC = 1.5 °C/W; hFE min = 20 at IC = 4 A. | Compatible in low-frequency linear amplifiers but lacks SOA validation for modern switching waveforms; larger footprint and higher thermal resistance. | Choose 2N3055G only for legacy repair or cost-sensitive low-volume linear designs where 15 A max current suffices and TO-3 mounting is acceptable. |
Compared with MJE13009 and 2N3055G, the TIP35AG delivers superior current-handling (25 A), lower thermal resistance (1.0 °C/W), and validated SOA for 60 V/25 A DC operation - making it uniquely suited for high-power industrial switching where thermal density and reliability are critical.
Availability
TIP35AG is available at Aetrix Electronics and suitable for industrial motor drives, linear audio amplifiers, and DC-DC converter output stages requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TIP35AG 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 management, analog, sensors, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The TIP35AG belongs to onsemi's high-power bipolar transistor family, engineered for ruggedized industrial switching and linear amplification - emphasizing SOA integrity, thermal robustness, and Pb-free manufacturability.
FAQ
What is the maximum continuous collector current rating for the TIP35AG?
The TIP35AG has a maximum continuous collector current (IC) rating of 25 A at case temperature (TC) = 25°C. This rating assumes proper heatsinking and derates linearly with increasing case temperature per the thermal resistance RJC = 1.0 °C/W. At TC = 100°C, the usable IC drops to approximately 44 A × (125 W − (100 − 25) × 1.0) / 125 ≈ 16.5 A - always verify against the SOA curve in Figure 6 of the TIP35AG datasheet.
Does the TIP35AG have a built-in diode or integrated protection features?
No, the TIP35AG is a discrete NPN bipolar junction transistor with no integrated body diode, thermal shutdown, or overcurrent protection. It relies entirely on external circuitry - such as base current limiting, collector clamping, and heatsink-mounted thermistors - for safe operation. The device's unclamped inductive switching rating (ESB = 90 mJ) reflects its ruggedness under transient conditions but does not imply internal protection.
Can the TIP35AG be used as a direct replacement for the TIP35A without design changes?
Yes, the TIP35AG is the Pb-free version of the TIP35A, sharing identical electrical specifications, pinout, package (SOT-93/TO-218), and thermal performance. The "G" suffix denotes RoHS-compliant plating and solderability; no PCB layout, thermal, or drive circuit modifications are required when upgrading from TIP35A to TIP35AG - both are fully interchangeable in existing designs.
What is the safe operating area (SOA) limitation for the TIP35AG at 60 V DC?
At 60 V DC collector-emitter voltage, the TIP35AG's forward-bias SOA permits up to 25 A continuous current only when case temperature is maintained at 25°C and second-breakdown limits are observed. As shown in Figure 6 of the TIP35AG datasheet, the DC SOA boundary intersects 60 V at ~25 A - exceeding this point risks thermal runaway or secondary breakdown. Derating is mandatory for elevated temperatures or pulsed operation beyond 10% duty cycle.
How does the TIP35AG's base-emitter on voltage affect driver circuit design?
The TIP35AG exhibits VBE(on) = 2.0 V typical at IC = 15 A and VCE = 4.0 V, rising to 4.0 V at IC = 25 A. This nonlinear base-emitter voltage demands driver circuits capable of delivering ≥1.5 A peak base current with ≥4.0 V compliance to ensure full saturation. Insufficient base drive results in elevated VCE(sat), increased conduction loss, and potential thermal failure - especially critical in Class AB audio or high-duty-cycle switching.
TIP35AG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 25 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 4V @ 5A, 25A
- Current - Collector Cutoff (Max):
- 1mA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 15 @ 15A, 4V
- Power - Max:
- 125 W
- Frequency - Transition:
- 3MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247-3
TIP35AG FAQ
1.How can I place an order for TIP35AG through Aetrix?
Please submit a Request for Quotation (RFQ) for TIP35AG 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 TIP35AG reliable?
The price and inventory of TIP35AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TIP35AG is usually 5 days.
3.What payment methods are accepted for TIP35AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TIP35AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TIP35AG?
TIP35AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TIP35AG 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 TIP35AG?
For technical support, including TIP35AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TIP35AG requirements.
6.How does Aetrix verify that TIP35AG is sourced from the original manufacturer or authorized distributors?
All TIP35AG 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 TIP35AG meets industry standards.
7.What is the process for return or replacement of TIP35AG?
All TIP35AG units undergo pre-shipment inspection (PSI). If there is an issue with TIP35AG, 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 TIP35AG part is unused and in its original packaging.
Return procedure for TIP35AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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