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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi SS9011HBU

Name: SS9011HBU
Brand: onsemi
SKU: SS9011HBU
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SS9011HBU

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: SS9011HBU.pdf

Description:: TRANS NPN 30V 0.03A TO-92-3

Quantity:: RFQ Add To RFQ list

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Inventory:9,043

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Product details

Overview

SS9011HBU from Fairchild Semiconductor is an NPN epitaxial silicon transistor in TO-92 package, rated for 30 V V_CEO, 30 mA I_C, and 400 mW P_C, with h_FE range 97–146 (Class H), used in AM/FM IF amplifier stages and general-purpose small-signal amplification.

For engineers reviewing the SS9011HBU datasheet, pinout, applications, or equivalent options, key selection criteria include DC current gain classification, V_CE(sat) at 10 mA/1 mA drive, noise figure at 1 MHz, f_T bandwidth, and TO-92 mechanical compatibility.

Technical Context

This discrete NPN bipolar junction transistor operates in linear amplification and switching modes with verified DC current gain (h_FE) of 97–146 at V_CE = 5 V and I_C = 1 mA. Its low V_BE(on) (0.65–0.75 V) and V_CE(sat) (0.08–0.3 V at I_C = 10 mA, I_B = 1 mA) support efficient biasing in low-voltage analog front-ends.

Designed for RF and IF signal handling, it delivers f_T = 2.0 MHz and NF = 4.0 dB at V_CE = 5 V, I_C = 1.0 mA, R_S = 500 Ω, f = 1 MHz - confirming suitability for AM converter and intermediate-frequency amplifier functions per manufacturer application guidance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 V - maximum safe collector-emitter voltage before breakdown in common-emitter configuration
I_C	30 mA - continuous collector current rating defining usable linear/saturation operating range
P_C	400 mW - thermal power dissipation limit at T_A = 25°C, constraining PCB trace width and heatsinking needs
h_FE (Class H)	97–146 - guaranteed DC current gain band enabling predictable base drive sizing for amplification
V_CE(sat)	0.08–0.3 V @ I_C=10 mA, I_B=1 mA - low saturation voltage supports efficient switching in low-dropout logic interfaces
f_T	2.0 MHz - unity-gain frequency limiting usable bandwidth in small-signal amplifiers and oscillators
NF	4.0 dB @ 1 MHz - quantified noise contribution critical for AM IF stage signal-to-noise ratio

Pinout & Package

SS9011HBU is housed in a standard TO-92 plastic package with 3 leads. Lead identification is fixed: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal in common-emitter configuration	Reference node for bias network design; connects to ground or emitter degeneration resistor
2 (Base)	Control input for minority-carrier injection	Determines operating point via current-limited or voltage-biased drive; sensitive to leakage (I_EBO ≤ 100 nA)
3 (Collector)	Current source terminal delivering amplified output	Connects to load resistor or next-stage input; must remain ≤30 V below emitter under all conditions

Key Features

Feature	Design Value
h_FE classification H	Guaranteed 97–146 gain band enables consistent gain staging without binning or trimming
Low V_CE(sat)	0.08–0.3 V ensures minimal voltage drop in saturated switching applications like LED drivers or logic-level translators
Specified noise figure	4.0 dB at 1 MHz supports use in AM IF amplifiers where SNR preservation is critical
TO-92 mechanical standardization	Compatible with legacy through-hole assembly tooling and footprint libraries across consumer electronics designs
JEDEC-compliant ratings	150°C max junction temperature and -55°C to +150°C storage range support industrial ambient operation

Applications

AM Converter Stage	AM/FM IF Amplifier
Use Scenario: Demodulating amplitude-modulated carrier signals in portable radios and broadcast receivers. IC Role / Device Role / Timing Role: Small-signal NPN amplifier providing voltage gain and impedance transformation between mixer and detector stages. Use Value: Class H h_FE ensures stable gain over temperature; low NF preserves weak-signal fidelity in front-end amplification.	Use Scenario: Boosting intermediate-frequency signals (455 kHz or 10.7 MHz) after mixing in dual-band AM/FM receivers. IC Role / Device Role / Timing Role: Linear amplifier configured in common-emitter topology with emitter degeneration for bandwidth and stability control. Use Value: f_T = 2.0 MHz and V_CE(sat) < 0.3 V enable clean amplification with minimal distortion at IF frequencies.
General-Purpose Amplifier	Low-Voltage Switching Node
Use Scenario: Signal conditioning in battery-powered sensor interfaces and audio preamplifiers. IC Role / Device Role / Timing Role: Discrete gain block for DC-coupled or AC-coupled analog signals up to ~1 MHz. Use Value: Guaranteed h_FE range simplifies bias design; TO-92 footprint allows easy prototyping and replacement.	Use Scenario: Driving indicator LEDs or enabling/disabling low-power peripheral circuits in embedded control boards. IC Role / Device Role / Timing Role: Saturated switch controlling current flow between V_CC and load with base-current control. Use Value: Low V_CE(sat) minimizes power loss; 30 mA I_C rating matches typical LED and logic-load requirements.

AM Converter Stage

AM/FM IF Amplifier

Use Scenario: Demodulating amplitude-modulated carrier signals in portable radios and broadcast receivers.

IC Role / Device Role / Timing Role: Small-signal NPN amplifier providing voltage gain and impedance transformation between mixer and detector stages.

Use Value: Class H h_FE ensures stable gain over temperature; low NF preserves weak-signal fidelity in front-end amplification.

Use Scenario: Boosting intermediate-frequency signals (455 kHz or 10.7 MHz) after mixing in dual-band AM/FM receivers.

IC Role / Device Role / Timing Role: Linear amplifier configured in common-emitter topology with emitter degeneration for bandwidth and stability control.

Use Value: f_T = 2.0 MHz and V_CE(sat) < 0.3 V enable clean amplification with minimal distortion at IF frequencies.

General-Purpose Amplifier

Low-Voltage Switching Node

Use Scenario: Signal conditioning in battery-powered sensor interfaces and audio preamplifiers.

IC Role / Device Role / Timing Role: Discrete gain block for DC-coupled or AC-coupled analog signals up to ~1 MHz.

Use Value: Guaranteed h_FE range simplifies bias design; TO-92 footprint allows easy prototyping and replacement.

Use Scenario: Driving indicator LEDs or enabling/disabling low-power peripheral circuits in embedded control boards.

IC Role / Device Role / Timing Role: Saturated switch controlling current flow between V_CC and load with base-current control.

Use Value: Low V_CE(sat) minimizes power loss; 30 mA I_C rating matches typical LED and logic-load requirements.

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	h_FE = 200–450 (higher gain), V_CEO = 45 V, same TO-92 package	Higher gain may require base resistor adjustment; better suited for low-drive amplification	Select BC547B when higher h_FE is needed and V_CEO margin > 30 V is acceptable
2N3904	h_FE = 100–300 (broader spread), V_CEO = 40 V, identical pinout and TO-92 footprint	Wider h_FE tolerance increases circuit sensitivity to transistor variance	Choose 2N3904 for broad availability and interchangeability where gain variation is manageable

Compared with SS9011HBU, BC547B offers higher and tighter h_FE but less V_CEO margin, while 2N3904 provides wider gain distribution and greater voltage headroom - both retain TO-92 compatibility but require validation of bias stability and noise performance in IF stages.

Availability

SS9011HBU is available at Aetrix Electronics and suitable for AM converter stages, AM/FM IF amplifiers, and general-purpose small-signal amplification requiring stable component supply and long-term obsolescence management.

Supply support for SS9011HBU 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 SS9011HBU belongs to Fairchild's general-purpose bipolar transistor product line, designed specifically for cost-sensitive, high-volume consumer audio and radio applications requiring reliable small-signal amplification and switching.

FAQ

What is the h_FE range for SS9011HBU?

The SS9011HBU is classified as Class H, with a guaranteed DC current gain (h_FE) range of 97 to 146 when measured at V_CE = 5 V and I_C = 1 mA. This tight gain band allows predictable biasing in amplifier designs without requiring gain-bin selection or feedback trimming. The SS9011HBU specification sheet confirms this classification explicitly in its h_FE classification table.

Is SS9011HBU pin-compatible with other TO-92 NPN transistors?

Yes, SS9011HBU uses the standard TO-92 package with pin 1 = Emitter, pin 2 = Base, pin 3 = Collector - matching the JEDEC TO-92 outline and aligning with industry-standard pinouts such as 2N3904 and BC547. However, electrical parameters like h_FE, V_CE(sat), and f_T differ, so functional substitution requires circuit-level verification. The SS9011HBU datasheet defines this pinout unambiguously in its package diagram.

What is the maximum operating temperature for SS9011HBU?

The SS9011HBU has a maximum junction temperature (T_J) 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 datasheet. Thermal design must ensure that power dissipation (≤400 mW at 25°C ambient) does not cause junction temperature to exceed 150°C under worst-case operating conditions. The SS9011HBU thermal limits support industrial-grade deployment when mounted on adequate copper area.

Does SS9011HBU have a specified noise figure?

Yes, the SS9011HBU has a specified noise figure (NF) of 4.0 dB at V_CE = 5 V, I_C = 1.0 mA, f = 1 MHz, and R_S = 500 Ω. This value is published in the Electrical Characteristics table and confirms its suitability for low-noise IF amplification in AM radio receivers. The SS9011HBU noise performance is explicitly validated for use in AM/FM IF amplifier applications per the manufacturer's application note references.

Can SS9011HBU be used in switching applications?

Yes, SS9011HBU is suitable for low-speed switching applications due to its low V_CE(sat) of 0.08–0.3 V at I_C = 10 mA and I_B = 1 mA, and its 30 mA collector current rating. It is commonly used to drive LEDs, relays, or logic inputs in battery-powered devices. The SS9011HBU datasheet includes saturation voltage testing conditions and confirms stable operation in both active and saturated regions.

SS9011HBU 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):: 30 mA

Voltage - Collector Emitter Breakdown (Max):: 30 V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 1mA, 10mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 97 @ 1mA, 5V

Power - Max:: 400 mW

Frequency - Transition:: 2MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

SS9011HBU FAQ

1.How can I place an order for SS9011HBU through Aetrix?

Please submit a Request for Quotation (RFQ) for SS9011HBU 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 SS9011HBU reliable?

The price and inventory of SS9011HBU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS9011HBU is usually 5 days.

3.What payment methods are accepted for SS9011HBU?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS9011HBU transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SS9011HBU?

SS9011HBU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SS9011HBU 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 SS9011HBU?

For technical support, including SS9011HBU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS9011HBU requirements.

6.How does Aetrix verify that SS9011HBU is sourced from the original manufacturer or authorized distributors?

All SS9011HBU 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 SS9011HBU meets industry standards.

7.What is the process for return or replacement of SS9011HBU?

All SS9011HBU units undergo pre-shipment inspection (PSI). If there is an issue with SS9011HBU, 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 SS9011HBU part is unused and in its original packaging.

Return procedure for SS9011HBU:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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