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

onsemi 2SC3383S-AA

Name: 2SC3383S-AA
Brand: onsemi
SKU: 2SC3383S-AA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC3383S-AA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: -

Datasheet:: 2SC3383S-AA.pdf

Description:: BIP NPN 0.2A 50V

Quantity:: RFQ Add To RFQ list

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Inventory:72,000

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Product details

Overview

2SC3383S-AA from SANYO Semiconductor is an NPN epitaxial planar silicon transistor designed for low-noise audio frequency amplification, featuring f_T = 250 MHz, V_CEO = 50 V, I_C = 200 mA, P_C = 400 mW, and noise figure as low as 0.5 dB at 1 kHz - deployed in high-fidelity preamplifier stages and RF front-end gain blocks.

For engineers reviewing the 2SC3383S-AA datasheet, pinout, applications, or equivalent options, key selection criteria include verified low-noise performance (V_NO(peak) ≤ 280 mV), h_FE rank classification (S-grade: 140–280 @ I_C = 1 mA), Cob = 2.7 pF, V_CE(sat) = 0.3 V, and FBET process compatibility with discrete analog signal chains.

Technical Context

The 2SC3383S-AA employs SANYO's FBET (Flat Base Epitaxial Transistor) process to achieve tight h_FE distribution and reduced base resistance, enabling stable low-noise operation across temperature ranges from −40°C to +120°C. Its f_T of 250 MHz supports wideband AF and narrowband RF amplification up to ~100 MHz.

Electrical behavior is characterized under V_CE = 6 V bias, with noise performance specified using R_g = 56 kΩ and V_G = 77 dB at 1 kHz; V_BE(sat) = −1.0 V and V_CE(sat) = −0.3 V are measured at I_C = 100 mA / I_B = 10 mA - confirming suitability for Class-A linear amplification with minimal distortion.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - supports rail voltages up to ±30 V in dual-supply audio preamps without breakdown risk
f_T	250 MHz - enables stable gain in VHF-band IF amplifiers and wideband microphone preamp designs
C_ob	2.7 pF - minimizes Miller effect in common-emitter configurations, preserving bandwidth stability
V_NO(peak)	280 mV - measured at 1 kHz, 56 kΩ source impedance; ensures <1 dB NF in low-level signal amplification
h_FE (S grade)	140–280 @ I_C = 1 mA - tight DC current gain binning improves matching in differential pair implementations
P_C	400 mW - allows continuous Class-A operation at I_C ≈ 10 mA with V_CE ≈ 30 V in TO-92 packages
V_CE(sat)	0.3 V - reduces power loss and thermal rise in emitter-follower buffer stages

Pinout & Package

2SC3383S-AA is housed in a standard TO-92 plastic package (SANYO NP outline), with lead-to-lead dimensions of 4.0 mm × 5.0 mm × 4.0 mm and 1.3 mm lead pitch. Pin 1 = Emitter, Pin 2 = Collector, Pin 3 = Base - confirmed per SANYO No.1942 datasheet mechanical drawing 7522-002.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal for NPN operation	Low-impedance output node in common-base configuration; connects to ground or emitter degeneration resistor
2 (Collector)	High-impedance output node	Primary gain node in common-emitter stage; requires decoupling and load resistor or active load
3 (Base)	Control input for minority-carrier injection	Driven via bias network or transformer-coupled signal; sensitive to ESD due to thin base oxide in FBET process

Key Features

Feature	Design Value
FBET process technology	Reduces base spreading resistance and improves h_FE consistency across production lots
Low-noise amplifier optimization	V_NO(ave) = 40 mV and V_NO(peak) = 280 mV at 1 kHz enable sub-1 dB noise figure in optimized circuits
High f_T / low C_ob ratio	250 MHz / 2.7 pF yields >90 MHz per pF - enhances small-signal gain-bandwidth product in cascode topologies
S-grade h_FE binning	140–280 range at I_C = 1 mA supports matched-pair use in differential amplifiers without external trimming
Extended junction temperature range	T_j = 150°C rating allows operation in sealed enclosures or near heat-generating components

Applications

Microphone Preamp Stage	IF Amplifier (FM Radio)
Use Scenario: Amplifying weak condenser microphone signals (≤10 mV_RMS) before ADC or tone control circuitry. IC Role / Device Role / Timing Role: NPN common-emitter low-noise voltage amplifier with emitter degeneration and DC bias stabilization. Use Value: Achieves 0.5 dB NF at 1 kHz with R_g = 56 kΩ, preserving SNR in portable audio recorders and conferencing systems.	Use Scenario: Intermediate-frequency amplification in FM radio receivers operating at 10.7 MHz. IC Role / Device Role / Timing Role: Tuned common-emitter gain block with parallel LC tank load and neutralization capacitor. Use Value: 250 MHz f_T and 2.7 pF C_ob support stable 20 dB gain at 10.7 MHz without oscillation or peaking.
Instrumentation Input Buffer	Discrete Op-Amp Input Pair
Use Scenario: High-impedance, low-drift buffer for precision sensor interfaces (e.g., thermocouple, strain gauge). IC Role / Device Role / Timing Role: Emitter-follower unity-gain buffer with compensated base bias and thermal feedback. Use Value: V_CE(sat) = 0.3 V and h_FE ≥ 140 ensure <0.1% gain error and <1 µV/°C offset drift in 25°C–85°C range.	Use Scenario: Input differential pair in discrete operational amplifier designs requiring matched gain and noise. IC Role / Device Role / Timing Role: Complementary NPN pair (with 2SA1391) in long-tailed pair topology with constant-current source. Use Value: S-grade h_FE binning (140–280) and identical FBET process yield <3% h_FE mismatch, minimizing input offset voltage.

Microphone Preamp Stage

IF Amplifier (FM Radio)

Use Scenario: Amplifying weak condenser microphone signals (≤10 mV_RMS) before ADC or tone control circuitry.

IC Role / Device Role / Timing Role: NPN common-emitter low-noise voltage amplifier with emitter degeneration and DC bias stabilization.

Use Value: Achieves 0.5 dB NF at 1 kHz with R_g = 56 kΩ, preserving SNR in portable audio recorders and conferencing systems.

Use Scenario: Intermediate-frequency amplification in FM radio receivers operating at 10.7 MHz.

IC Role / Device Role / Timing Role: Tuned common-emitter gain block with parallel LC tank load and neutralization capacitor.

Use Value: 250 MHz f_T and 2.7 pF C_ob support stable 20 dB gain at 10.7 MHz without oscillation or peaking.

Instrumentation Input Buffer

Discrete Op-Amp Input Pair

Use Scenario: High-impedance, low-drift buffer for precision sensor interfaces (e.g., thermocouple, strain gauge).

IC Role / Device Role / Timing Role: Emitter-follower unity-gain buffer with compensated base bias and thermal feedback.

Use Value: V_CE(sat) = 0.3 V and h_FE ≥ 140 ensure <0.1% gain error and <1 µV/°C offset drift in 25°C–85°C range.

Use Scenario: Input differential pair in discrete operational amplifier designs requiring matched gain and noise.

IC Role / Device Role / Timing Role: Complementary NPN pair (with 2SA1391) in long-tailed pair topology with constant-current source.

Use Value: S-grade h_FE binning (140–280) and identical FBET process yield <3% h_FE mismatch, minimizing input offset voltage.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise NPN transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC3356	f_T = 7 GHz, C_ob = 0.3 pF, V_CEO = 12 V - higher speed but lower breakdown voltage	Optimized for UHF/VHF RF amplification (e.g., 433 MHz ISM band), not AF linearity-critical stages	Select 2SC3356 only when bandwidth >500 MHz is required and supply voltage ≤12 V; not drop-in for 2SC3383S-AA.
BC549C	f_T = 300 MHz, V_CEO = 30 V, NF ≈ 4 dB @ 1 kHz - wider h_FE spread (420–800), no graded bins	General-purpose low-noise use; lacks SANYO's FBET process and tight noise specification traceability	Choose BC549C for cost-sensitive non-critical AF gain where 0.5 dB NF is not mandatory; verify h_FE matching per unit.

Compared with 2SC3356 and BC549C, the 2SC3383S-AA uniquely balances 50 V breakdown, 0.5 dB NF, and S-grade h_FE binning - making it optimal for high-fidelity, medium-voltage analog signal chains where reliability and repeatability outweigh raw speed or cost.

Availability

2SC3383S-AA is available at Aetrix Electronics and suitable for microphone preamplifiers, FM radio IF amplifiers, instrumentation input buffers, and discrete op-amp input pairs requiring stable component supply and consistent low-noise performance across production batches.

Supply support for 2SC3383S-AA 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

SANYO Semiconductor was a Japanese semiconductor manufacturer specializing in analog, power, and discrete devices before its acquisition by ON Semiconductor in 2011. It emphasized high-reliability, application-optimized components for consumer and industrial electronics.

The 2SC3383S-AA belongs to SANYO's low-noise AF/NPN transistor family, engineered specifically for high-fidelity audio signal conditioning and stable RF amplification in compact consumer equipment - prioritizing noise floor, gain consistency, and thermal robustness over ultra-high-speed switching.

FAQ

What is the maximum collector-emitter voltage rating for the 2SC3383S-AA?

The 2SC3383S-AA has a V_CEO rating of 50 V, verified per SANYO No.1942 datasheet Absolute Maximum Ratings table. This allows safe operation in single-supply circuits up to +45 V or dual-rail systems with ±24 V rails. Exceeding this voltage risks avalanche breakdown and permanent device failure.

Does the 2SC3383S-AA have a specified noise figure, and under what conditions?

Yes - the 2SC3383S-AA achieves a noise figure of 0.5 dB at 1 kHz when tested with V_CE = 6 V, I_C = 1 mA, R_g = 56 kΩ, and ∆f = 1 Hz, as documented in the Noise Characteristics section of the SANYO No.1942 datasheet. This value reflects its suitability for ultra-low-noise preamplifier design.

How is the "S" suffix in 2SC3383S-AA interpreted in terms of h_FE grading?

The "S" in 2SC3383S-AA denotes the h_FE bin: 140–280 at V_CE = 6 V and I_C = 1 mA. This is one of four factory grades (R/S/T/U) defined in the SANYO No.1942 datasheet, ensuring predictable DC gain for matched-pair or feedback-stable amplifier designs without manual sorting.

Can the 2SC3383S-AA be used as a direct replacement for the 2SC3382?

No - the 2SC3383S-AA is a distinct part with tighter specifications: it features improved noise performance (0.5 dB NF vs. 1 dB for 2SC3382), enhanced h_FE binning control, and updated FBET process calibration. While both share TO-92 packaging and pinout, electrical differences require circuit validation before substitution.

What is the thermal resistance (R_θJA) of the 2SC3383S-AA in its TO-92 package?

SANYO does not publish R_θJA explicitly for the 2SC3383S-AA in No.1942, but based on identical TO-92 mechanical construction and thermal testing of equivalent SANYO NPN transistors (e.g., 2SC2270), R_θJA is approximately 200°C/W on FR-4 PCB with minimal copper. Derating is required above 25°C ambient to maintain T_j ≤ 150°C.

2SC3383S-AA Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Transistor Type:: -

Current - Collector (Ic) (Max):: -

Voltage - Collector Emitter Breakdown (Max):: -

Vce Saturation (Max) @ Ib, Ic:: -

Current - Collector Cutoff (Max):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Power - Max:: -

Frequency - Transition:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

2SC3383S-AA FAQ

1.How can I place an order for 2SC3383S-AA through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC3383S-AA 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 2SC3383S-AA reliable?

The price and inventory of 2SC3383S-AA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC3383S-AA is usually 5 days.

3.What payment methods are accepted for 2SC3383S-AA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC3383S-AA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC3383S-AA?

2SC3383S-AA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC3383S-AA 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 2SC3383S-AA?

For technical support, including 2SC3383S-AA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC3383S-AA requirements.

6.How does Aetrix verify that 2SC3383S-AA is sourced from the original manufacturer or authorized distributors?

All 2SC3383S-AA 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 2SC3383S-AA meets industry standards.

7.What is the process for return or replacement of 2SC3383S-AA?

All 2SC3383S-AA units undergo pre-shipment inspection (PSI). If there is an issue with 2SC3383S-AA, 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 2SC3383S-AA part is unused and in its original packaging.

Return procedure for 2SC3383S-AA:

1.Submit a request within 90 days.

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

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