My Inquiry
My Account
onsemi TIP105TU
- Part No.:
- TIP105TU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-220-3
- Datasheet:
-
TIP105TU.pdf
- Description:
- TRANS PNP DARL 60V 8A TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,636
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TIP105TU from onsemi is a PNP silicon Darlington power transistor in TO-220AB package, designed for medium-power linear amplification and low-speed switching. It delivers 8 A continuous collector current, sustains 60 Vdc collector-emitter voltage (VCEO(sus)), and exhibits typical DC current gain (hFE) of 2500 at IC = 4.0 A - enabling high-current drive with minimal base drive in industrial relay drivers and motor control stages.
For engineers reviewing the TIP105TU datasheet, pinout, applications, or equivalent options, key selection criteria include its built-in base-emitter shunt resistors, 80 W power dissipation at TC = 25°C, monolithic Darlington construction, and RoHS-compliant Pb-free packaging - all critical for thermal reliability and simplified biasing in discrete power stage designs.
Technical Context
The TIP105TU implements a monolithic dual-transistor Darlington configuration with integrated ~8.0 kΩ base-emitter shunt resistors on both transistors, reducing external component count and improving turn-off speed over standard Darlingtons. Its complementary PNP topology pairs directly with NPN types like TIP100–TIP102 for push-pull output stages.
Thermal design is constrained by RJC = 1.56 °C/W and RJA = 62.5 °C/W, requiring heatsinking for sustained operation above ~2 W ambient dissipation. Safe operating area (SOA) is limited by second breakdown at high VCE/IC combinations, especially under pulse conditions exceeding 10% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO(sus) | 60 Vdc minimum - defines maximum safe blocking voltage in switching applications without avalanche stress |
| IC (continuous) | 8.0 Adc - supports load currents up to 8 A with appropriate heatsinking and derating |
| hFE | 1000–20,000 (min–max) at IC = 3.0 A - enables low-base-drive switching and stable DC amplification |
| VCE(sat) | 2.0 Vdc max at IC = 3.0 A, IB = 6.0 mA - limits conduction loss to ≤6 W in saturated switch mode |
| PD @ TC = 25°C | 80 W - sets absolute maximum junction power with case temperature maintained at 25°C |
| RJC | 1.56 °C/W - determines minimum required thermal interface resistance to keep TJ ≤ 150°C |
| TJ range | –65°C to +150°C - supports operation in harsh industrial environments including automotive under-hood zones |
Pinout & Package
Package: TO-220AB (Case 221A), 3-pin through-hole plastic power package with metal tab electrically connected to collector (pin 2 and pin 4). Dimensions: 10.10 × 15.12 × 4.45 mm, 2.54 mm pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input node; internal shunt resistor (~8.0 kΩ) provides automatic turn-off bias |
| 2 | Collector | Main high-current output terminal; electrically tied to metal tab for direct heatsink mounting |
| 3 | Emitter | Current return path; common reference for load connection in low-side switch configurations |
| 4 | Collector | Redundant collector connection - improves current handling and thermal spreading via dual-tab contact |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic Darlington structure | Integrates driver and output transistors on single die - eliminates interconnect inductance and mismatch drift |
| Built-in base-emitter shunt resistors | ~8.0 kΩ per stage - ensures reliable turn-off without external pull-downs, reducing BOM count |
| High hFE at high IC | 2500 typ. @ IC = 4.0 A - allows microcontroller-level base drive (e.g., 1.6 mA for 4 A load) |
| RoHS-compliant Pb-free package | TIP105TU suffix indicates lead-free TO-220AB - meets global environmental compliance requirements |
| Unclamped inductive energy rating | 30 mJ @ L = 50 mH, VCC = 20 V - quantifies safe flyback energy handling during relay/coil switching |
Applications
| DC Motor Driver Stage | Industrial Relay Driver |
|---|---|
|
Use Scenario: Driving 24 V/5 A brushed DC motors in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: High-current PNP switch controlling motor direction and enable in H-bridge half-legs. Use Value: 60 V VCEO(sus) margin accommodates 24 V supply plus inductive kick; 2.0 V VCE(sat) limits conduction loss to <6 W at full load. |
Use Scenario: Activating 120 VAC/10 A industrial relays from 5 V microcontroller outputs. IC Role / Device Role / Timing Role: Medium-speed PNP interface amplifier isolating logic-level signals from high-power coil circuits. Use Value: Built-in shunt resistors ensure clean turn-off without external components; 30 mJ unclamped energy rating handles relay coil flyback safely. |
| Linear Power Regulator Pass Element | Heater Load Controller |
|
Use Scenario: Adjustable 0–30 V/3 A bench power supply pass transistor with analog feedback loop. IC Role / Device Role / Timing Role: Series pass element operating in active region with constant current gain stability. Use Value: hFE >1000 across 0.5–8 A ensures predictable loop gain; RJC = 1.56 °C/W enables compact heatsink design. |
Use Scenario: PWM-controlled 24 V resistive heating elements (e.g., 3 Ω cartridge heaters) in HVAC actuators. IC Role / Device Role / Timing Role: Low-frequency (<1 kHz) switching element managing average heater power. Use Value: 80 W power rating supports 24 V × 3.3 A = 80 W heater loads; TO-220AB mechanical robustness withstands vibration in field installations. |
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 |
|---|---|---|---|
| MJD105G | Surface-mount DPAK package (TO-252), lower PD = 35 W, same VCEO(sus) = 60 V, hFE = 750–7500 | Requires PCB layout change; unsuitable for >3 A continuous loads without aggressive cooling | Select when space-constrained SMT assembly is mandatory and peak current ≤3 A |
| TIP107 | Same TO-220AB package, higher VCEO(sus) = 100 V, otherwise identical pinout and gain characteristics | Direct drop-in replacement where ≥100 V blocking is required (e.g., 48 V telecom systems) | Choose TIP107 only if system transient voltages exceed 60 V - no benefit for 24 V/36 V applications |
Compared with MJD105G and TIP107, the TIP105TU offers optimal balance of through-hole manufacturability, 60 V blocking headroom, and 8 A capability - making it preferred for cost-sensitive industrial controls where board-level reliability and serviceability outweigh miniaturization needs.
Availability
TIP105TU is available at Aetrix Electronics and suitable for industrial motor drives, PLC output modules, and linear power supply designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for TIP105TU 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 power management, analog, sensor, and discrete devices for automotive, industrial, and cloud power applications.
The TIP105TU belongs to onsemi's legacy silicon power transistor family engineered for ruggedized medium-power linear and switching applications - emphasizing thermal robustness, high current gain, and ease of use in discrete power stage design.
FAQ
What is the maximum continuous collector current rating for the TIP105TU?
The TIP105TU is rated for 8.0 Adc continuous collector current at case temperature TC = 25°C. Derating is required above 25°C at 0.64 W/°C, meaning usable current drops to approximately 5.5 A at TC = 65°C. This rating assumes proper heatsinking and adherence to SOA curves shown in Figure 6 of the official datasheet.
Does the TIP105TU have built-in base resistors, and how do they affect circuit design?
Yes, the TIP105TU integrates ~8.0 kΩ base-emitter shunt resistors on both transistors in its Darlington pair. These resistors provide automatic turn-off bias, eliminating the need for external pull-down resistors in most switching applications. This simplifies PCB layout and improves reliability in noisy industrial environments where unintended turn-on must be avoided.
Can the TIP105TU be used as a direct replacement for the TIP107 in existing designs?
No - the TIP105TU and TIP107 are not interchangeable without verification. While both share TO-220AB packaging and pinout, the TIP107 has VCEO(sus) = 100 V versus 60 V for the TIP105TU. Substituting TIP105TU into a TIP107 design risks premature failure if operating voltage exceeds 60 V. Always validate voltage margins before substitution.
What is the thermal resistance from junction to case (RJC) for the TIP105TU, and why does it matter?
The TIP105TU has RJC = 1.56 °C/W maximum. This value determines how efficiently heat transfers from the silicon die to the heatsink-mounted metal tab. For example, at 80 W dissipation, junction-to-case temperature rise would be ≤125°C - requiring careful heatsink selection to keep TJ ≤ 150°C. Accurate RJC is essential for thermal modeling and reliability validation.
Is the TIP105TU suitable for switching inductive loads like solenoids or relays?
Yes - the TIP105TU is explicitly characterized for unclamped inductive switching with E = 30 mJ at L = 50 mH, VCC = 20 V, and 10 Hz repetition rate. Its 60 V VCEO(sus) rating provides margin against flyback spikes, and built-in shunt resistors aid fast turn-off. However, external clamping (e.g., flyback diode) is still recommended for higher-energy or faster-switching loads.
TIP105TU 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):
- 8 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 2.5V @ 80mA, 8A
- Current - Collector Cutoff (Max):
- 50µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 1000 @ 3A, 4V
- Power - Max:
- 2 W
- Frequency - Transition:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
TIP105TU FAQ
1.How can I place an order for TIP105TU through Aetrix?
Please submit a Request for Quotation (RFQ) for TIP105TU 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 TIP105TU reliable?
The price and inventory of TIP105TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TIP105TU is usually 5 days.
3.What payment methods are accepted for TIP105TU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TIP105TU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TIP105TU?
TIP105TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TIP105TU 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 TIP105TU?
For technical support, including TIP105TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TIP105TU requirements.
6.How does Aetrix verify that TIP105TU is sourced from the original manufacturer or authorized distributors?
All TIP105TU 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 TIP105TU meets industry standards.
7.What is the process for return or replacement of TIP105TU?
All TIP105TU units undergo pre-shipment inspection (PSI). If there is an issue with TIP105TU, 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 TIP105TU part is unused and in its original packaging.
Return procedure for TIP105TU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TIP105TU Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
