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onsemi SS9014BTA
- Part No.:
- SS9014BTA
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
SS9014BTA.pdf
- Description:
- TRANS NPN 45V 0.1A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,861
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Product details
Overview
SS9014BTA from Fairchild Semiconductor is an NPN epitaxial silicon transistor designed for low-noise pre-amplification in audio and signal conditioning circuits, with hFE 100–300 (Class B), VCEO = 45 V, IC = 100 mA, PC = 450 mW, and fT = 150–270 MHz.
For engineers reviewing the SS9014BTA datasheet, pinout, applications, or equivalent options, key selection considerations include DC current gain linearity at low collector currents, low noise figure (0.9–10 dB at 1 kHz), saturation voltage performance under 100 mA drive, and TO-92 mechanical compatibility in space-constrained analog stages.
Technical Context
This NPN bipolar junction transistor operates in active and saturation regions for small-signal amplification and switching. Its high hFE range (100–300) and low VBE(sat) (0.84–1.0 V at IC = 100 mA, IB = 5 mA) support efficient biasing in Class-A preamp stages.
Designed for low-noise operation, the SS9014BTA delivers NF = 0.9–10 dB at VCE = 5 V, IC = 0.2 mA, f = 1 kHz, RS = 2 kΩ, and exhibits Cob = 2.2–3.5 pF at VCB = 10 V, enabling stable RF-coupled gain up to ~270 MHz (fT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - supports rail-to-rail operation in 30 V analog supply systems without breakdown risk |
| IC | 100 mA - enables driving medium-impedance loads (e.g., 1 kΩ collector resistor) with linear gain |
| hFE (Class B) | 100–300 - ensures predictable DC bias stability across production lots in emitter-follower buffers |
| fT | 150–270 MHz - allows use in VHF pre-amplifier stages up to ~30 MHz with adequate gain margin |
| NF | 0.9–10 dB - meets low-noise requirements for microphone preamps and sensor front-ends at 1 kHz |
| PC | 450 mW - permits continuous operation at 50–70% derated power in TO-92 packages at 25°C ambient |
| Cob | 2.2–3.5 pF - minimizes Miller effect in common-emitter configurations below 100 MHz |
Pinout & Package
SS9014BTA is housed in a standard TO-92 plastic package with 3 leads: Emitter (Lead 1), Base (Lead 2), Collector (Lead 3). Lead spacing is 1.27 mm (0.05"), body length 4.58 mm max, and overall height 3.86 mm max.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Connected to ground or low-impedance return path; sets DC bias reference for input signal coupling |
| 2 (Base) | Control input node | Receives bias current or AC-coupled signal; requires stable 100–300 kΩ base resistor network for Class-A operation |
| 3 (Collector) | Active output node | Drives load or next stage; configured as common-emitter amplifier or emitter follower depending on feedback topology |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise amplification | NF = 0.9–10 dB at 1 kHz enables clean signal recovery in electret mic and piezo sensor interfaces |
| High hFE linearity | hFE remains stable across IC = 0.1–10 mA, reducing distortion in audio preamp gain stages |
| Complementary pairing | Matched performance with SS9015 PNP device for push-pull output or differential pair designs |
| TO-92 thermal reliability | Rated TJ = 150°C and PC = 450 mW allow sustained operation in sealed enclosures up to 70°C ambient |
Applications
| Audio Pre-Amplifier | Signal Conditioning Front-End |
|---|---|
Use Scenario: Amplifying weak signals from electret condenser microphones before ADC sampling. IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with emitter degeneration. Use Value: Low NF (0.9–10 dB) and high hFE (100–300) preserve SNR while enabling single-stage gain ≥20 dB at 1 kHz. | Use Scenario: Buffering and level-shifting output from piezoelectric vibration sensors. IC Role / Device Role / Timing Role: Emitter-follower voltage buffer with unity gain and low output impedance. Use Value: VBE(sat) ≤ 1.0 V and IC = 100 mA rating ensure stable bias under variable sensor loading conditions. |
| Low-Frequency Oscillator Core | Digital Logic Interface Driver |
Use Scenario: Active device in phase-shift or Wien-bridge oscillator circuits operating below 100 kHz. IC Role / Device Role / Timing Role: Gain element providing frequency-determining loop gain with minimal phase shift. Use Value: fT > 150 MHz ensures wide bandwidth margin, preventing gain roll-off-induced frequency drift. | Use Scenario: Driving TTL/CMOS inputs from microcontroller GPIO pins with higher current demand. IC Role / Device Role / Timing Role: Low-side switch or level translator with saturated switching behavior. Use Value: VCE(sat) ≤ 0.3 V at IC = 100 mA reduces logic-high voltage drop and improves fan-out capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN small-signal transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC547B | hFE = 200–450 (higher mid-range), VCEO = 45 V, same TO-92 package | Higher gain variability may require tighter bias resistor tolerance in precision preamps | Preferred where higher hFE consistency is needed at IC = 2 mA, but not suitable for noise-critical 0.2 mA operation |
| 2N3904 | hFE = 100–300 (Class B), VCEO = 40 V, PC = 625 mW, TO-92 | Lower VCEO limits use in 45 V supply rails; higher PC allows greater dissipation margin | Acceptable substitute when VCEO ≥ 40 V suffices and thermal headroom is prioritized over noise floor |
Compared with BC547B and 2N3904, the SS9014BTA offers superior noise performance at low collector currents (0.2 mA), tighter hFE classification control per batch, and optimized Cob for stable gain in RF-coupled audio paths-making it preferred for high-fidelity pre-amplification where SNR is critical.
Availability
SS9014BTA is available at Aetrix Electronics and suitable for audio pre-amplifiers, sensor signal conditioning front-ends, and low-frequency oscillator circuits requiring stable component supply and consistent hFE binning.
Supply support for SS9014BTA 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.
The SS9014BTA belongs to Fairchild's legacy general-purpose NPN transistor family, engineered specifically for low-noise, high-linearity amplification in consumer audio, instrumentation, and industrial sensing applications.
FAQ
What is the hFE classification for SS9014BTA?
The SS9014BTA is classified as Class B, with guaranteed DC current gain (hFE) ranging from 100 to 300 when measured at VCE = 5 V and IC = 1 mA. This binning ensures predictable bias point stability in production-grade pre-amplifier designs using the SS9014BTA.
Does SS9014BTA support low-noise operation at audio frequencies?
Yes, the SS9014BTA delivers a noise figure of 0.9–10 dB at 1 kHz with VCE = 5 V, IC = 0.2 mA, and RS = 2 kΩ - making it suitable for electret microphone pre-amplifiers and other low-level analog signal paths where SNR preservation is essential for the SS9014BTA.
What is the maximum collector-emitter voltage rating for SS9014BTA?
The SS9014BTA has a rated collector-emitter breakdown voltage (BVCEO) of 45 V under test condition IC = 1 mA and IB = 0. This defines the absolute upper limit for safe DC or peak AC voltage swing across the collector and emitter terminals of the SS9014BTA.
Is SS9014BTA pin-compatible with other TO-92 NPN transistors?
SS9014BTA uses standard TO-92 lead assignment (1 = Emitter, 2 = Base, 3 = Collector), matching industry convention. While physically compatible with most TO-92 sockets, electrical characteristics like hFE distribution and noise performance differ - so functional substitution requires validation per circuit requirements for the SS9014BTA.
What is the typical transition frequency (fT) of SS9014BTA?
The SS9014BTA has a current gain–bandwidth product (fT) ranging from 150 MHz to 270 MHz when tested at VCE = 5 V and IC = 10 mA. This bandwidth supports stable small-signal amplification well into the VHF range, extending the useful frequency response of circuits using the SS9014BTA.
SS9014BTA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1mA, 5V
- Power - Max:
- 450 mW
- Frequency - Transition:
- 270MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
SS9014BTA FAQ
1.How can I place an order for SS9014BTA through Aetrix?
Please submit a Request for Quotation (RFQ) for SS9014BTA 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 SS9014BTA reliable?
The price and inventory of SS9014BTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS9014BTA is usually 5 days.
3.What payment methods are accepted for SS9014BTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS9014BTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS9014BTA?
SS9014BTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS9014BTA 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 SS9014BTA?
For technical support, including SS9014BTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS9014BTA requirements.
6.How does Aetrix verify that SS9014BTA is sourced from the original manufacturer or authorized distributors?
All SS9014BTA 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 SS9014BTA meets industry standards.
7.What is the process for return or replacement of SS9014BTA?
All SS9014BTA units undergo pre-shipment inspection (PSI). If there is an issue with SS9014BTA, 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 SS9014BTA part is unused and in its original packaging.
Return procedure for SS9014BTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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