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onsemi SBCP68T1G
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- Part No.:
- SBCP68T1G
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
SBCP68T1G.pdf
- Description:
- TRANS NPN 20V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:9,676
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Product details
Overview
SBCP68T1G from onsemi is an NPN silicon epitaxial transistor designed for low-voltage, high-current switching and amplification in surface-mount medium-power applications. It features VCEO = 20 V, IC = 1.0 A continuous, VCE(sat) ≤ 0.5 V at IC = 1.0 A / IB = 100 mA, hFE = 60–375 (depending on bias), and fT = 60 MHz - enabling use in DC-DC converter output stages, motor driver H-bridge legs, and LED current regulation circuits.
For engineers reviewing the SBCP68T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its SOT-223 thermal performance (RJA = 83.3 °C/W), AEC-Q101 qualification for automotive environments, Pb-free/RoHS compliance, and verified PNP complement BCP69T1 for push-pull designs.
Technical Context
This device operates as a medium-power NPN bipolar junction transistor with epitaxial base construction for improved gain consistency and frequency response. Its safe operating area supports pulsed collector currents up to 3.0 A (ICM) and enables stable operation from −65 °C to +150 °C junction temperature.
The SOT-223 package integrates a thermally enhanced collector tab (pins 2 and 4) for direct PCB copper pour attachment, delivering superior heat dissipation versus standard SOT-23 or TO-92 packages. Electrical behavior is characterized across three hFE test conditions - confirming usable gain at low (5 mA), mid (500 mA), and high (1 A) current levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20 V - Maximum allowable collector-emitter voltage before breakdown under open-base condition; sets upper limit for DC-DC switch node or motor drive rail voltage. |
| IC (continuous) | 1.0 A - Continuous collector current rating at TC = 25 °C; defines steady-state load capability in linear regulators or LED drivers. |
| VCE(sat) | ≤ 0.5 V @ IC/IB = 10 - Low saturation voltage minimizes conduction loss and self-heating in switching applications. |
| hFE | 60–375 - Wide DC current gain range across operating points; supports both precision biasing (5 mA) and high-current switching (1 A). |
| fT | 60 MHz - Transition frequency confirms suitability for audio-frequency amplification and PWM frequencies up to ~5–10 MHz. |
| RJA | 83.3 °C/W - Junction-to-ambient thermal resistance (surface mounted); determines required PCB copper area for thermal management. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTOL, and ESD testing per JEDEC standards. |
Pinout & Package
The SBCP68T1G is housed in a surface-mount SOT-223 package (Case 318E, Style 1) with four terminals: pins 2 and 4 are internally connected to the collector tab for enhanced thermal conduction and mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input for forward-biased operation; requires current-limited drive (IB ≤ 0.4 A continuous) to avoid thermal runaway. |
| 2 & 4 | Collector (common) | Internally bonded collector leads; both pins must be soldered to large copper pour for optimal thermal performance and power handling. |
| 3 | Emitter | Current return path; typically grounded or tied to low-side shunt resistor for current sensing in switching topologies. |
Key Features
| Feature | Design Value |
|---|---|
| High-current capability | Rated for 1.0 A continuous collector current with validated SOA up to 100 ms pulses at 3.0 A - suitable for intermittent motor stall or inrush current handling. |
| SOT-223 thermal design | Formed collector leads absorb thermal stress during reflow/wave soldering; flat mounting ensures consistent solder joint inspection and reliable thermal interface to PCB. |
| AEC-Q101 qualification | Validated for automotive under-hood environments including extended temperature cycling (−40 °C to +125 °C ambient) and humidity exposure per JESD22-A110. |
| Complementary PNP pairing | Direct functional match with BCP69T1 - identical SOT-223 footprint and matched VCEO/IC/hFE specs enable symmetrical push-pull or H-bridge output stages. |
Applications
| Automotive Door Module Driver | Industrial DC-DC Converter Switch |
|---|---|
Use Scenario: Driving window lift motors, mirror actuators, or door lock solenoids in 12 V vehicle systems. IC Role / Device Role / Timing Role: NPN power switch controlling ground-side motor current; operated in saturation mode with base drive from MCU GPIO or dedicated driver IC. Use Value: Low VCE(sat) reduces power loss and heat generation in confined module enclosures; AEC-Q101 qualification ensures long-term reliability under vibration and thermal cycling. | Use Scenario: High-side or low-side switching element in non-isolated buck or boost converters delivering up to 1 A output. IC Role / Device Role / Timing Role: Main power switch modulated by PWM controller; operates in hard-switched or quasi-resonant topology depending on gate drive timing. Use Value: 60 MHz fT supports efficient switching at 500 kHz–1 MHz; SOT-223 thermal performance allows operation without heatsink at full load with adequate PCB copper. |
| LED Constant-Current Driver | Embedded Fan Speed Controller |
Use Scenario: Regulating current through high-brightness LED strings in signage or interior lighting. IC Role / Device Role / Timing Role: Linear or PWM-controlled pass transistor in constant-current sink configuration; emitter tied to sense resistor, collector to LED anode. Use Value: Tight hFE spread (50–375) enables predictable base current scaling; low VBE(on) (≤ 1.0 V) improves efficiency in low-dropout configurations. | Use Scenario: Controlling 12 V DC cooling fans in industrial PLCs or network equipment chassis. IC Role / Device Role / Timing Role: Low-side switch modulated via PWM from microcontroller; handles fan startup surge and steady-state current. Use Value: 3.0 A peak current rating accommodates fan inrush (typically 2–2.5× rated current); SOT-223 package withstands repeated thermal cycling from fan on/off cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN high-current transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCP68T3G | Same die, but supplied in 4,000-unit tape-and-reel vs. 1,000-unit for SBCP68T1G; identical electrical and thermal specs. | No functional difference; selected when higher-volume automated assembly is required. | Choose BCP68T3G for production runs >50k units/year to reduce line changeover frequency and optimize pick-and-place efficiency. |
| ZTX653 | Higher VCEO = 60 V, lower IC = 2.0 A continuous, different SOT-89 package; RJA = 120 °C/W limits thermal headroom. | Preferred where higher voltage margin is needed but power density is less critical; not drop-in due to different footprint and thermal profile. | Select ZTX653 only if system voltage exceeds 20 V or SOT-223 board space is unavailable - otherwise SBCP68T1G offers better thermal performance and automotive qualification. |
Compared with BCP68T3G, SBCP68T1G provides identical performance in smaller reels for prototyping and low-volume builds; compared with ZTX653, SBCP68T1G delivers superior thermal management and automotive-grade validation at lower voltage rating - making it optimal for cost-sensitive, thermally constrained 12 V automotive and industrial switching.
Availability
SBCP68T1G is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC-DC converters, and embedded LED lighting systems requiring stable component supply and AEC-Q101-compliant sourcing.
Supply support for SBCP68T1G 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 focused on energy-efficient electronics, with leadership in automotive, industrial, cloud, and IoT markets.
The BCP68 series belongs to onsemi's medium-power discrete transistor portfolio, engineered specifically for robust, thermally efficient switching in automotive and industrial surface-mount applications where reliability under thermal stress is critical.
FAQ
What is the maximum continuous collector current rating for the SBCP68T1G?
The SBCP68T1G has a maximum continuous collector current (IC) rating of 1.0 A at TC = 25 °C. This rating assumes proper PCB thermal management - specifically, mounting on a 0.93 in² copper pad per the datasheet layout recommendation. At elevated case temperatures, derating applies per the 12 mW/°C thermal coefficient.
Is the SBCP68T1G qualified for automotive applications?
Yes, the SBCP68T1G is AEC-Q101 qualified and PPAP capable. It meets rigorous automotive reliability requirements including temperature cycling, high-temperature operating life, and ESD testing. The "S" prefix in SBCP68T1G explicitly denotes automotive-grade screening and control change traceability per onsemi's internal site and process controls.
What is the pin configuration of the SBCP68T1G in the SOT-223 package?
The SBCP68T1G uses a 4-pin SOT-223 package with pin 1 = Base, pins 2 & 4 = Collector (internally connected), and pin 3 = Emitter. Pins 2 and 4 are electrically common and must both be soldered to a shared thermal pad on the PCB to achieve the specified RJA = 83.3 °C/W and safe operating area performance.
Does the SBCP68T1G have a complementary PNP transistor?
Yes, the BCP69T1 is the designated PNP complement to the SBCP68T1G. Both devices share identical SOT-223 packaging, matching voltage ratings (VCEO = 20 V), current capability (IC = 1.0 A), and thermal characteristics - enabling balanced push-pull, H-bridge, or complementary amplifier designs without footprint changes.
What is the typical transition frequency (fT) of the SBCP68T1G and how is it measured?
The SBCP68T1G has a typical transition frequency (fT) of 60 MHz, measured under conditions of IC = 10 mA and VCE = 5.0 V at TA = 25 °C. This parameter reflects the frequency at which the small-signal current gain drops to unity and indicates usable bandwidth for analog amplification and high-frequency switching control loops.
SBCP68T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 20 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 100mA, 1A
- Current - Collector Cutoff (Max):
- 10µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 85 @ 500mA, 1V
- Power - Max:
- 1.5 W
- Frequency - Transition:
- 60MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
SBCP68T1G FAQ
1.How can I place an order for SBCP68T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SBCP68T1G 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 SBCP68T1G reliable?
The price and inventory of SBCP68T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBCP68T1G is usually 5 days.
3.What payment methods are accepted for SBCP68T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBCP68T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBCP68T1G?
SBCP68T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBCP68T1G 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 SBCP68T1G?
For technical support, including SBCP68T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBCP68T1G requirements.
6.How does Aetrix verify that SBCP68T1G is sourced from the original manufacturer or authorized distributors?
All SBCP68T1G 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 SBCP68T1G meets industry standards.
7.What is the process for return or replacement of SBCP68T1G?
All SBCP68T1G units undergo pre-shipment inspection (PSI). If there is an issue with SBCP68T1G, 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 SBCP68T1G part is unused and in its original packaging.
Return procedure for SBCP68T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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