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onsemi SS9014DBU
- Part No.:
- SS9014DBU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
SS9014DBU.pdf
- Description:
- TRANS NPN 45V 0.1A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,817
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Product details
Overview
SS9014DBU from ON Semiconductor is an NPN epitaxial silicon transistor designed for low-noise pre-amplification in audio and signal conditioning circuits, with hFE of 60–1000 (Class D), VCEO = 45 V, IC = 100 mA, and fT = 150–270 MHz. It operates in TO-92 package and delivers low VBE(sat) = 0.84–1.0 V at IC = 100 mA/IB = 5 mA.
For engineers reviewing the SS9014DBU datasheet, pinout, applications, or equivalent options, key selection criteria include DC current gain classification, noise figure (NF = 0.9–10 dB at 1 kHz), Cob = 2.2–3.5 pF, thermal limits (TJ = 150°C), and complementary pairing with SS9015 for differential stages.
Technical Context
The SS9014DBU is a general-purpose NPN bipolar junction transistor optimized for low-level analog amplification where linearity and low noise are critical. Its hFE classification (D: 400–1000) ensures consistent gain in bias-sensitive small-signal stages, while fT ≥ 150 MHz supports wideband audio and IF applications up to ~200 MHz.
It features low saturation voltages (VCE(sat) ≤ 0.3 V, VBE(sat) ≤ 1.0 V), enabling efficient operation in Class-A preamps and active loads. The device is rated for TJ = 150°C and PC = 450 mW, with breakdown voltages VCBO = 50 V and VEBO = 5 V - suitable for low-voltage, low-power linear circuits with moderate headroom requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - maximum safe collector-emitter voltage before breakdown; sets rail limit for single-supply amplifier stages. |
| hFE (Class D) | 400–1000 - high DC current gain enables high-input-impedance common-emitter gain stages with minimal base drive. |
| fT | 150–270 MHz - usable bandwidth for audio preamps, RF detector stages, and narrowband IF amplifiers up to ~100 MHz. |
| NF | 0.9–10 dB @ 1 kHz - low noise performance critical for microphone preamplifiers and sensor signal conditioning. |
| Cob | 2.2–3.5 pF - low output capacitance minimizes Miller effect and preserves high-frequency stability in gain blocks. |
| PC | 450 mW - total power dissipation limit defines thermal derating envelope for continuous operation in TO-92. |
Pinout & Package
SS9014DBU is housed in a through-hole TO-92 package (3.86 mm × 1.27 mm × 4.58 mm), with standardized lead configuration: Emitter (Pin 1), Base (Pin 2), Collector (Pin 3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Reference node for bias network; connects to ground or emitter degeneration resistor in CE amplifiers. |
| 2 (Base) | Control input | Receives low-current drive; requires stable DC bias (e.g., voltage divider) due to hFE sensitivity. |
| 3 (Collector) | Active output node | Drives load or next stage; polarity and voltage swing defined by VCEO and supply rail constraints. |
Key Features
| Feature | Design Value |
|---|---|
| High hFE linearity | hFE remains stable across IC = 0.1–10 mA range - reduces distortion in Class-A small-signal amplifiers. |
| Low noise figure | NF ≤ 10 dB at 1 kHz - enables clean amplification of microvolt-level signals from electret mics or piezo sensors. |
| Complementary pairing | Matched with SS9015 (PNP) for push-pull, differential, or phase-splitter topologies without redesign. |
| Robust thermal rating | TJ = 150°C and TSTG = −55 to +150°C - supports operation in industrial ambient environments without forced cooling. |
Applications
| Audio Pre-Amplifier | Signal Conditioning Front-End |
|---|---|
Use Scenario: Amplifying weak output from electret condenser microphones in voice recorders or intercom systems. 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 preserve SNR and enable >40 dB voltage gain with single-stage design. | Use Scenario: Buffering and gain-setting for analog sensor outputs (e.g., thermistor, photodiode transimpedance feedback). IC Role / Device Role / Timing Role: Linear active load or DC-coupled gain block in precision analog front-ends. Use Value: Stable hFE and low VBE(sat) ensure predictable bias point and minimal offset drift over temperature. |
| Differential Pair Amplifier | Low-Voltage Oscillator Core |
Use Scenario: Input stage of discrete op-amp or instrumentation amplifier using matched SS9014DBU/SS9015 pairs. IC Role / Device Role / Timing Role: Active element in emitter-coupled differential pair with shared tail current source. Use Value: Complementary NPN/PNP pairing enables balanced gain, CMRR > 60 dB, and thermal tracking in discrete designs. | Use Scenario: Active device in Colpitts or Hartley oscillator for low-power RF beacons or ISM-band transmitters (≤ 100 MHz). IC Role / Device Role / Timing Role: Gain element sustaining oscillation via fT ≥ 150 MHz and low Cob minimizing frequency pulling. Use Value: High fT and low output capacitance support reliable startup and stable frequency operation below 200 MHz. |
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 |
|---|---|---|---|
| BC547C | hFE = 420–800 (lower max fT = 300 MHz typ, but higher Cob = 4.5 pF) | Widely used in hobbyist and legacy consumer designs; less optimized for ultra-low-noise audio | Preferred where board space allows SOT-23 alternatives or when sourcing legacy BOMs |
| 2N3904 | hFE = 100–300 (Class A/B), fT = 300 MHz, Cob = 4 pF, VCEO = 40 V | Broadly standardized; lower gain range limits dynamic range in low-level preamp stages | Chosen for interchangeability in production systems where gain consistency is less critical than supply chain maturity |
Compared with BC547C and 2N3904, the SS9014DBU offers superior hFE spread (up to 1000) and lower noise figure - making it better suited for high-fidelity audio front-ends and precision analog signal chains where gain stability and SNR are prioritized over generic switching use.
Availability
SS9014DBU is available at Aetrix Electronics and suitable for audio pre-amplifiers, sensor signal conditioners, and discrete differential amplifier circuits requiring stable component supply, long-term manufacturability, and consistent parametric binning.
Supply support for SS9014DBU 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, and sensing solutions for automotive, industrial, and cloud infrastructure markets.
The SS9014DBU belongs to ON Semiconductor's legacy small-signal transistor portfolio, originally developed by Fairchild for high-linearity, low-noise analog amplification in cost-sensitive consumer and industrial electronics.
FAQ
What is the hFE classification for SS9014DBU?
The SS9014DBU is classified as Class D, with DC current gain (hFE) ranging from 400 to 1000 at VCE = 5 V and IC = 1 mA. This high-gain bin is specifically selected for low-base-drive applications such as microphone preamplifiers and high-input-impedance sensor interfaces. The SS9014DBU datasheet confirms this classification under "hFE Classification" and specifies test conditions explicitly.
Does SS9014DBU have a complementary PNP part?
Yes, the SS9015 is the designated complementary PNP transistor for SS9014DBU, sharing identical TO-92 packaging, voltage ratings (VEBO = 5 V, VCEO = 45 V), and thermal specifications. The SS9014DBU and SS9015 are routinely paired in differential amplifiers, push-pull output stages, and phase splitters - a relationship confirmed in the original Fairchild SS9014 datasheet "Features" section.
What is the maximum operating temperature for SS9014DBU?
The SS9014DBU has a maximum junction temperature (TJ) of 150°C and a storage temperature range of −55°C to +150°C. These ratings are specified in the Absolute Maximum Ratings table of the official ON Semiconductor datasheet. Derating is required above 25°C ambient per the thermal resistance curve, and the TO-92 package limits sustained power dissipation to 450 mW at room temperature.
Can SS9014DBU be used in RF amplifier applications?
Yes, the SS9014DBU supports RF amplifier use up to approximately 100–200 MHz due to its fT of 150–270 MHz and low Cob of 2.2–3.5 pF. It has been applied in Colpitts oscillator cores and low-power IF amplifiers. However, it is not characterized for RF-specific parameters like S-parameters or power gain - so validation is required for each target frequency and matching network in the final SS9014DBU circuit design.
What are the pin assignments for SS9014DBU in TO-92 package?
When viewed with the flat side facing forward and leads pointing downward, the SS9014DBU TO-92 pinout is: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. This configuration is documented in the "Package Dimensions" drawing and "Typical Characteristics" section of the SS9014DBU datasheet, and matches industry-standard TO-92 orientation for NPN transistors.
SS9014DBU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Bulk
- 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):
- 500nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 400 @ 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
SS9014DBU FAQ
1.How can I place an order for SS9014DBU through Aetrix?
Please submit a Request for Quotation (RFQ) for SS9014DBU 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 SS9014DBU reliable?
The price and inventory of SS9014DBU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS9014DBU is usually 5 days.
3.What payment methods are accepted for SS9014DBU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS9014DBU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS9014DBU?
SS9014DBU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS9014DBU 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 SS9014DBU?
For technical support, including SS9014DBU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS9014DBU requirements.
6.How does Aetrix verify that SS9014DBU is sourced from the original manufacturer or authorized distributors?
All SS9014DBU 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 SS9014DBU meets industry standards.
7.What is the process for return or replacement of SS9014DBU?
All SS9014DBU units undergo pre-shipment inspection (PSI). If there is an issue with SS9014DBU, 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 SS9014DBU part is unused and in its original packaging.
Return procedure for SS9014DBU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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