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onsemi TIP146TU
- Part No.:
- TIP146TU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-220-3
- Datasheet:
-
TIP146TU.pdf
- Description:
- TRANS PNP DARL 80V 10A TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,104
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Product details
Overview
TIP146TU from ON Semiconductor is a PNP complementary Darlington power transistor designed for low-frequency switching and linear amplifier applications, featuring 80 Vdc collector-emitter sustaining voltage (VCEO(sus)), 10 A continuous collector current (IC), and minimum DC current gain (hFE) of 1000 at IC = 5 A and VCE = 4 V - commonly used in high-current relay drivers and industrial motor control stages.
For engineers reviewing the TIP146TU datasheet, pinout, applications, or equivalent options, key selection criteria include its monolithic Darlington structure with built-in base-emitter shunt resistor, thermal resistance (RθJC = 1.0 °C/W), and safe operating area limits under unclamped inductive loads - all critical for robust 50/60 Hz power stage design.
Technical Context
The TIP146TU implements a monolithic PNP Darlington pair with integrated ~8.0 kΩ base-emitter shunt resistor and ~40 Ω emitter ballast resistor, enabling simplified biasing and improved current sharing. Its architecture supports linear operation up to 125 W at TC = 25°C and switching operation with 2.5 µs storage time (ts) and 2.5 µs fall time (tf) under specified test conditions.
It operates within a junction temperature range of –65°C to +150°C and exhibits defined second breakdown limits per Figure 6, with active-region SOA constrained by both thermal dissipation and secondary breakdown boundaries - requiring heatsink design aligned with RθJC = 1.0 °C/W and RθJA = 35.7 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO(sus) | 80 Vdc minimum - defines maximum allowable collector-emitter voltage before sustaining breakdown during switching transitions |
| IC (continuous) | 10 Adc - maximum steady-state collector current sustainable with adequate heatsinking at TC = 25°C |
| hFE (min) | 1000 @ IC = 5 A, VCE = 4 V - enables low base drive current (e.g., ≤10 mA) for full saturation at 5 A load |
| VCE(sat) | 2.0 Vdc max @ IC = 5 A, IB = 10 mA - determines conduction loss and heat generation in saturated switch mode |
| RθJC | 1.0 °C/W - specifies thermal resistance from junction to case, directly governing required heatsink thermal performance |
| PD (max) | 125 W @ TC = 25°C - sets absolute upper power dissipation limit before thermal derating applies |
| ts / tf | 2.5 µs each - defines minimum off-time and switching frequency ceiling in hard-switched inductive circuits |
Pinout & Package
Package: TO-218 (Case 340D–02), isolated metal tab, vertical mounting orientation with integral heatsink interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Base | Control input node | Accepts low-current drive signal; internal shunt resistor (~8.0 kΩ) provides turn-off assist and prevents spurious turn-on |
| 2 - Collector | High-current output (PNP) | Connected to positive rail in high-side switch configuration; electrically tied to metal tab for thermal path |
| 3 - Emitter | Power return node | Common reference for load connection; internal ballast resistor (~40 Ω) improves current sharing across Darlington stages |
| 4 - Collector | Redundant collector terminal | Dual-collector construction enhances current handling and thermal distribution; both collectors must be connected to same potential |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic Darlington pair | Integrates driver and output transistors on single die, eliminating external interconnect parasitics and ensuring matched thermal behavior |
| Built-in base-emitter shunt resistor | ~8.0 kΩ resistor ensures reliable turn-off without external pull-down, reducing component count in relay/motor driver PCBs |
| Dual collector terminals | Two electrically parallel collector leads lower effective package inductance and improve current sharing in high-power layouts |
| Defined SOA with second breakdown limit | Published active-region safe operating area (Figure 6) enables deterministic design margining for inductive load switching |
| Unclamped inductive load rating | Rated for 100 mJ energy dissipation (Figure 7), supporting snubberless operation in solenoid and transformer primary switching |
Applications
| Industrial Relay Drivers | DC Motor Speed Control |
|---|---|
Use Scenario: Driving 24–48 VDC industrial relays with coil currents up to 8 A in PLC output modules. IC Role / Device Role / Timing Role: High-gain PNP Darlington switch providing low-base-drive, high-current sinking capability with fast turn-off via internal shunt resistor. Use Value: Eliminates need for discrete base-pull resistors and reduces gate-drive complexity while maintaining >100 kHz switching capability in PWM-controlled relay stages. |
Use Scenario: Controlling brushed DC motors (up to 1 HP) in conveyor systems using phase-angle or PWM-based analog speed regulation. IC Role / Device Role / Timing Role: Linear-mode power pass element in series-regulated motor supply, leveraging high hFE for stable bias control under variable load. Use Value: Enables precise analog speed control with <±2% linearity over 0–10 A load range, supported by SOA-limited thermal stability at TJ ≤ 150°C. |
| AC Solid-State Relays | High-Current Linear Regulators |
Use Scenario: Output stage in zero-crossing AC SSRs driving resistive heating elements in industrial ovens (20–50 A resistive load). IC Role / Device Role / Timing Role: PNP complement in back-to-back configuration with NPN TIP141, handling negative half-cycle conduction with 80 V blocking. Use Value: Provides matched VCEO(sus), hFE, and SOA to TIP141, ensuring symmetrical turn-on/turn-off timing and thermal balance in bidirectional AC switching. |
Use Scenario: Pass transistor in adjustable 0–30 V, 5 A bench power supplies requiring low-noise, high-stability output regulation. IC Role / Device Role / Timing Role: Series-pass element operating in linear region, dissipating up to 80 W with forced-air heatsinking. Use Value: Delivers <5 mVrms output ripple due to low VCE(sat) hysteresis and inherent Darlington noise suppression, validated per Figure 5 VBE vs. temperature curves. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP Darlington power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD127G | TO-263 surface-mount package; lower PD = 30 W; VCEO = 100 V; hFE min = 1000 @ IC = 2 A | Designed for compact, automated PCB assembly; unsuitable for >3 A continuous loads without aggressive thermal management | Select when board space is constrained and peak current ≤3 A; verify layout thermal relief matches RθJA = 40 °C/W |
| TIP147TU | Higher VCEO(sus) = 100 Vdc; identical package, pinout, and SOA; hFE min = 1000 @ IC = 5 A, VCE = 4 V | Direct drop-in replacement where higher voltage margin is required (e.g., 100 V bus systems); no layout or drive circuit changes needed | Choose for new designs targeting ≥100 V system rails; retains full compatibility with TIP146TU footprint and drive requirements |
Compared with TIP146TU, MJD127G trades power handling and thermal robustness for SMT manufacturability, while TIP147TU extends voltage capability without altering thermal or drive design - making TIP147TU the only true functional and mechanical upgrade path.
Availability
TIP146TU is available at Aetrix Electronics and suitable for industrial motor control, high-current relay driving, and linear power regulation requiring stable component supply, long-term lifecycle support, and traceable sourcing from ON Semiconductor's qualified production lines.
Supply support for TIP146TU 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
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensor, and logic devices for automotive, industrial, and cloud power applications.
The TIP146TU belongs to ON Semiconductor's legacy silicon power transistor product line, engineered specifically for ruggedized, high-current linear and switching applications in industrial automation and power conversion equipment.
FAQ
What is the maximum continuous collector current rating for the TIP146TU?
The TIP146TU is rated for 10 Adc continuous collector current at case temperature (TC) = 25°C, with derating required above that temperature per the free-air thermal curve in Figure 10. At TC = 100°C, maximum allowable IC drops to approximately 5.5 A to maintain junction temperature ≤150°C. This rating assumes proper heatsinking aligned with RθJC = 1.0 °C/W. The TIP146TU must not exceed this limit in sustained operation without thermal violation.
Does the TIP146TU have an integrated base-emitter shunt resistor, and what is its value?
Yes, the TIP146TU features a monolithically integrated base-emitter shunt resistor of approximately 8.0 kΩ, as confirmed in the DARLINGTON SCHEMATICS section and electrical schematics on page 1 of the ON Semiconductor datasheet. This resistor ensures reliable turn-off by discharging base charge without requiring an external pull-down, reducing component count and improving noise immunity in relay driver and motor control circuits using the TIP146TU.
Can the TIP146TU be used in linear regulator applications, and what thermal considerations apply?
Yes, the TIP146TU is explicitly characterized for linear operation with published SOA curves (Figure 6) and thermal derating data (Figure 10). When used as a series pass transistor, it supports up to 125 W dissipation at TC = 25°C, but requires a heatsink capable of maintaining TC ≤ 80°C to avoid exceeding TJ = 150°C under full-load conditions. The TIP146TU's RθJC = 1.0 °C/W mandates direct metal-to-heatsink contact with thermal compound for optimal performance.
What is the collector-emitter sustaining voltage (VCEO(sus)) specification for the TIP146TU?
The TIP146TU has a minimum collector-emitter sustaining voltage VCEO(sus) of 80 Vdc at IC = 30 mA and IB = 0, as specified in the OFF CHARACTERISTICS table on page 2 of the ON Semiconductor datasheet. This parameter defines the maximum voltage the device can block during switching transitions before entering avalanche or sustaining conduction - critical for selecting appropriate bus voltage margins in 48 V and 72 V industrial systems using the TIP146TU.
Is the TIP146TU pin-compatible with other devices in the TIP14x family, and which ones share the same pinout?
Yes, the TIP146TU shares identical pinout (Base–Collector–Emitter–Collector) and package (TO-218, Case 340D–02) with all members of the TIP14x complementary Darlington family - including TIP140, TIP141, TIP142, TIP145, and TIP147. This allows direct substitution within the same voltage class (e.g., TIP141 ↔ TIP146) without PCB modification, though voltage and SOA differences must be verified per application requirements when using the TIP146TU.
TIP146TU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- PNP - Darlington
- Current - Collector (Ic) (Max):
- 10 A
- Voltage - Collector Emitter Breakdown (Max):
- 80 V
- Vce Saturation (Max) @ Ib, Ic:
- 3V @ 40mA, 10A
- Current - Collector Cutoff (Max):
- 2mA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 1000 @ 5A, 4V
- Power - Max:
- 80 W
- Frequency - Transition:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
TIP146TU FAQ
1.How can I place an order for TIP146TU through Aetrix?
Please submit a Request for Quotation (RFQ) for TIP146TU 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 TIP146TU reliable?
The price and inventory of TIP146TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TIP146TU is usually 5 days.
3.What payment methods are accepted for TIP146TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TIP146TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TIP146TU?
TIP146TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TIP146TU 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 TIP146TU?
For technical support, including TIP146TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TIP146TU requirements.
6.How does Aetrix verify that TIP146TU is sourced from the original manufacturer or authorized distributors?
All TIP146TU 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 TIP146TU meets industry standards.
7.What is the process for return or replacement of TIP146TU?
All TIP146TU units undergo pre-shipment inspection (PSI). If there is an issue with TIP146TU, 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 TIP146TU part is unused and in its original packaging.
Return procedure for TIP146TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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