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onsemi BD18010STU
- Part No.:
- BD18010STU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-225AA, TO-126-3
- Datasheet:
-
BD18010STU.pdf
- Description:
- TRANS PNP 80V 3A TO-126-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,051
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Product details
Overview
BD18010STU from ON Semiconductor is a PNP epitaxial silicon power transistor in TO-126 package, rated for −80 V VCEO, −3 A continuous collector current, 30 W power dissipation at TC = 25°C, with hFE of 100–250 at IC = −150 mA, used in medium-power linear regulation and switching circuits such as DC motor drivers and relay interfaces.
For engineers reviewing the BD18010STU datasheet, pinout, applications, or equivalent options, key selection criteria include verified VCEO = −80 V, IC(DC) = −3 A, VCE(sat) ≤ −0.8 V at IC = −1 A / IB = −0.1 A, fT = 3 MHz, and TO-126 thermal resistance RθJC = 8.5°C/W - all confirmed in Fairchild/ON Semiconductor documentation.
Technical Context
The BD18010STU operates as a medium-power PNP bipolar junction transistor optimized for linear amplification and hard-switching applications where high breakdown voltage and robust safe operating area (SOA) are required. Its complementary pairing with BD179 and use in push-pull output stages reflect its design for balanced dual-rail power control.
It features a DC current gain (hFE) classified per device variant: BD180 corresponds to Class 16 (hFE = 100–250), with guaranteed VCE(sat) ≤ −0.8 V and VBE(on) ≈ −1.3 V under specified bias conditions, enabling predictable base drive sizing in discrete amplifier and switch designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −80 V - supports operation in high-voltage negative-rail systems up to 80 V without breakdown |
| IC(DC) | −3 A - enables continuous load switching or regulation for medium-current loads like solenoids or fans |
| PC @ TC=25°C | 30 W - delivers substantial power handling when mounted on heatsink with low thermal resistance |
| hFE (IC = −150 mA) | 100–250 - ensures stable base current design across production lots for consistent gain-controlled operation |
| VCE(sat) | ≤ −0.8 V @ IC = −1 A, IB = −0.1 A - minimizes conduction loss and self-heating during saturation |
| fT | 3 MHz - suitable for audio-frequency amplification and low-speed switching (≤100 kHz) |
| RθJC | 8.5°C/W - allows precise junction temperature estimation when case temperature is monitored |
Pinout & Package
BD18010STU is housed in a TO-126 plastic package with standard lead configuration: emitter (pin 1), collector (pin 2), base (pin 3). The package provides mechanical robustness and thermal path via the metal tab (collector-connected) for heatsink mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal for PNP operation | Connected to most positive rail in common-emitter switch; defines reference for base bias network |
| 2 (Collector) | Main current output terminal | Internally bonded to metal tab; must be electrically isolated from heatsink unless circuit ground reference permits |
| 3 (Base) | Control input for minority-carrier injection | Requires current-limited drive (e.g., series resistor) to ensure IB ≤ −0.1 A for full saturation |
Key Features
| Feature | Design Value |
|---|---|
| High VCEO rating | −80 V enables use in industrial 48 V and telecom −48 V supply rails without derating |
| Guaranteed hFE range | 100–250 at IC = −150 mA ensures predictable base drive requirements across manufacturing lots |
| Low VCE(sat) | ≤ −0.8 V reduces power loss and thermal stress in high-duty-cycle switching applications |
| TO-126 thermal performance | RθJC = 8.5°C/W supports >20 W dissipation with modest heatsinking in ambient ≤50°C |
| Complementary pairing | Designed as direct complement to BD179 (NPN), simplifying push-pull and H-bridge discrete driver design |
Applications
| DC Motor Control | Relay Driver |
|---|---|
Use Scenario: Driving brushed DC motors in industrial actuators requiring bidirectional control via discrete H-bridge. IC Role / Device Role / Timing Role: PNP high-side switch in totem-pole output stage, providing current sinking capability during reverse polarity phase. Use Value: −80 V VCEO withstands inductive kickback; −3 A IC supports motors drawing up to 2.5 A continuous load. | Use Scenario: Solid-state replacement for electromechanical relays in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Medium-power switching element interfacing microcontroller GPIO to 24 V DC relay coils. Use Value: Low VCE(sat) limits coil driver loss; TO-126 package allows direct PCB mounting with minimal heatsink. |
| Linear Voltage Regulator | Audio Amplifier Output Stage |
Use Scenario: Pass transistor in adjustable negative linear regulator (e.g., −5 V to −24 V) for analog sensor subsystems. IC Role / Device Role / Timing Role: Series pass element controlling output voltage via feedback loop; dissipates excess power as heat. Use Value: 30 W PC and 8.5°C/W RθJC support ≥15 W continuous dissipation with proper heatsinking. | Use Scenario: Complementary output pair in Class AB audio amplifier delivering 5–10 W into 4 Ω or 8 Ω loads. IC Role / Device Role / Timing Role: Negative-rail output transistor working with BD179 to deliver symmetrical push-pull current swing. Use Value: 3 MHz fT and controlled hFE ensure stable gain and low distortion up to 20 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD180G | Same VCEO (−80 V), higher IC(DC) = −5 A, TO-252 (DPAK) surface-mount package | Requires PCB rework for SMT layout; better suited for automated assembly and higher-current designs | Select when board space is constrained and thermal interface uses soldered copper pour instead of mechanical heatsink |
| BD180 | Identical electrical specs and TO-126 package; BD18010STU is legacy Fairchild marking now aligned under ON Semiconductor's naming convention | No functional or mechanical difference; same datasheet, same qualification, same production lot traceability | BD18010STU and BD180 refer to the same device - BD18010STU reflects updated ON Semiconductor nomenclature post-Fairchild integration |
Compared with MJD180G and BD180, BD18010STU offers through-hole TO-126 reliability and serviceability for prototyping and low-volume industrial builds, while maintaining identical core ratings - making it optimal where manual assembly, field repair, or legacy footprint compatibility is prioritized.
Availability
BD18010STU is available at Aetrix Electronics and suitable for DC motor control, relay driving, and linear voltage regulation requiring stable component supply, long-term obsolescence management, and traceable sourcing from authorized channels.
Supply support for BD18010STU 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 energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
BD18010STU belongs to ON Semiconductor's discrete bipolar transistor product line, designed specifically for medium-power linear and switching applications where ruggedness, predictable gain, and high-voltage capability are essential.
FAQ
What is the maximum continuous collector current rating for BD18010STU?
The BD18010STU has a maximum continuous collector current (IC) rating of −3 A at TC = 25°C. This value decreases with rising case temperature per the derating curve in the datasheet, reaching zero at TC ≈ 175°C. For reliable operation, design must ensure junction temperature remains below 150°C using appropriate heatsinking and airflow.
Is BD18010STU pin-compatible with BD179?
No - BD18010STU is a PNP transistor while BD179 is its NPN complement; they share identical TO-126 pinout (emitter-collector-base), but polarity and biasing requirements differ fundamentally. BD18010STU pin 1 is emitter, pin 2 is collector, pin 3 is base - same physical layout as BD179, but not electrically interchangeable without circuit redesign.
Does BD18010STU require a heatsink in typical applications?
Yes - BD18010STU dissipates up to 30 W at TC = 25°C, so any application drawing >1–2 W continuously requires a heatsink. With RθJC = 8.5°C/W and RθCA ≈ 70°C/W (no heatsink), even 1 W causes >80°C junction rise. A minimum 5°C/W heatsink is recommended for >5 W operation to maintain TJ < 125°C.
What is the guaranteed hFE range for BD18010STU at IC = −1 A?
At IC = −1 A and VCE = −2 V, BD18010STU exhibits hFE ≥ 15 (minimum), per the "hFE2" specification in the datasheet. This lower gain at high current ensures predictable base drive sizing for saturation, though actual values typically fall between 20–60 depending on unit and temperature.
Can BD18010STU be used in audio amplifier output stages?
Yes - BD18010STU is qualified for linear audio applications, with fT = 3 MHz and low VCE(sat) supporting clean Class AB operation up to 20 kHz. Paired with BD179 as a complementary output stage, BD18010STU delivers symmetrical current sourcing/sinking and stable gain, provided adequate biasing and thermal management are implemented.
BD18010STU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-225AA, TO-126-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 80 V
- Vce Saturation (Max) @ Ib, Ic:
- 800mV @ 100mA, 1A
- Current - Collector Cutoff (Max):
- 100µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 63 @ 150mA, 2V
- Power - Max:
- 30 W
- Frequency - Transition:
- 3MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-126-3
BD18010STU FAQ
1.How can I place an order for BD18010STU through Aetrix?
Please submit a Request for Quotation (RFQ) for BD18010STU 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 BD18010STU reliable?
The price and inventory of BD18010STU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BD18010STU is usually 5 days.
3.What payment methods are accepted for BD18010STU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BD18010STU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BD18010STU?
BD18010STU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BD18010STU 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 BD18010STU?
For technical support, including BD18010STU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BD18010STU requirements.
6.How does Aetrix verify that BD18010STU is sourced from the original manufacturer or authorized distributors?
All BD18010STU 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 BD18010STU meets industry standards.
7.What is the process for return or replacement of BD18010STU?
All BD18010STU units undergo pre-shipment inspection (PSI). If there is an issue with BD18010STU, 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 BD18010STU part is unused and in its original packaging.
Return procedure for BD18010STU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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