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Toshiba Semiconductor and Storage 2SC4117-BL,LF
- Part No.:
- 2SC4117-BL,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
2SC4117-BL,LF.pdf
- Description:
- TRANS NPN 120V 0.1A SC-70
- Quantity:
- Payment:
- Shipping:
Inventory:88,243
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Product details
Overview
2SC4117-BL,LF from Toshiba Electronic Devices & Storage Corporation is a silicon NPN epitaxial transistor designed for audio-frequency general-purpose amplifier applications. It delivers VCEO = 120 V, hFE = 350–700 (BL grade), NF = 1 dB (typ.) at 1 kHz, and fT = 100 MHz, enabling high-fidelity preamplifier and driver stages in automotive audio systems.
For engineers reviewing the 2SC4117-BL,LF datasheet, 2SC4117-BL,LF pinout, 2SC4117-BL,LF application, or 2SC4117-BL,LF equivalent, key selection considerations include its AEC-Q101 qualification, low-noise performance at low collector current (IC = 0.1 mA), and complementary pairing with 2SA1587 for push-pull output stages.
Technical Context
This transistor employs PCT (Planar Collector Technology) processing to achieve excellent hFE linearity-hFE(IC = 0.1 mA)/hFE(IC = 2 mA) = 0.95 (typ.)-critical for minimizing harmonic distortion in linear amplification. Its SC-70 (JEITA) / 2-2E1A (Toshiba) package supports compact audio front-end designs while maintaining thermal stability up to Tj = 150 °C under defined PCB mounting conditions.
The device operates with VEBO = 5 V and IC = 100 mA absolute maximum ratings, and exhibits Cob = 3.0 pF (typ.) at VCB = 10 V, supporting stable high-frequency gain in multi-stage amplifier topologies. Its guaranteed noise figure of ≤10 dB (max) at RG = 10 kΩ enables use in sensitive microphone preamps and phono stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 120 V - supports rail voltages up to ±60 V in Class-A/B audio output stages without breakdown |
| hFE range | 350–700 (BL grade) - ensures consistent DC biasing across production lots in discrete gain blocks |
| NF | 1 dB (typ.) at 1 kHz - enables low-noise amplification of weak signals such as moving-magnet phono cartridges |
| fT | 100 MHz - provides sufficient gain-bandwidth for wideband audio (20 Hz–20 kHz) with margin for stability |
| Cob | 3.0 pF (typ.) - minimizes Miller effect in common-emitter configurations, preserving high-frequency response |
| PC (FR4 board) | 200 mW - defines thermal limit for continuous operation on standard 25.4 mm × 25.4 mm × 1.6 mm FR4 with 0.5 mm² copper pads |
Pinout & Package
Package: SC-70 (JEITA), Toshiba designation 2-2E1A - surface-mount, 3-terminal plastic package weighing 0.006 g (typ.), optimized for automated placement and thermal dissipation on FR4 boards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Emitter (E) | Current sink terminal | Connected to ground or low-impedance return path; sets DC bias reference point for amplifier stage |
| Base (B) | Control input terminal | Receives small-signal drive; requires impedance-matched source (e.g., 10 kΩ per NF test condition) for optimal noise performance |
| Collector (C) | Current source terminal | Drives load or next stage; voltage swing limited by VCEO = 120 V and PC derating above Ta = 25 °C |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| High hFE linearity | hFE ratio of 0.95 (typ.) between 0.1 mA and 2 mA ensures minimal gain compression across operating range |
| Low noise figure | 1 dB typical NF at 1 kHz enables use in first-stage amplification where signal-to-noise ratio is critical |
| Complementary pair | Matched electrical characteristics with 2SA1587 (PNP) for balanced push-pull output stages |
| Small-outline package | SC-70 footprint (2.2 mm × 1.35 mm × 0.95 mm) supports high-density PCB layouts in space-constrained audio modules |
Applications
| Automotive Audio Preamp | Phono Stage Amplifier |
|---|---|
Use Scenario: Amplifying low-level signals from vehicle head unit DACs before power amplification. IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with emitter degeneration. Use Value: AEC-Q101 qualification ensures operational stability across –40 °C to +125 °C ambient, while 120 V VCEO accommodates transient-suppressed 48 V supply rails. |
Use Scenario: First gain stage in RIAA-equalized turntable preamplifiers. IC Role / Device Role / Timing Role: Low-noise voltage amplifier with 10 kΩ source impedance matching. Use Value: 1 dB typical noise figure at 1 kHz preserves dynamic range of vinyl playback; hFE linearity reduces harmonic distortion below 0.5% THD+N. |
| Portable Instrument Input | Industrial Sensor Signal Conditioning |
Use Scenario: Buffering and gain-setting for piezoelectric guitar pickups or condenser mic capsules. IC Role / Device Role / Timing Role: High-input-impedance common-collector follower or common-emitter gain block. Use Value: 100 MHz fT supports extended bandwidth beyond audio band for transient fidelity; SC-70 package enables integration into handheld form factors. |
Use Scenario: Amplifying millivolt-level outputs from thermocouples or strain gauges in factory automation nodes. IC Role / Device Role / Timing Role: DC-coupled, low-drift small-signal amplifier with precision bias network. Use Value: Stable hFE over temperature (Tj up to 150 °C) maintains gain accuracy; low ICBO (≤0.1 µA) minimizes offset drift in high-impedance sensor interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN small-signal amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 2SC4081-GR,LF | Lower hFE range (120–270), same SC-70 package, VCEO = 120 V, NF = 2 dB (typ.) | Less suitable for ultra-low-noise preamp stages; better for cost-sensitive switching or medium-gain buffer roles | Select when gain consistency at low IC is less critical and budget constraints dominate |
| MMBT5551 | VCEO = 160 V, hFE = 80–250, NF = 5 dB (typ.), SOT-23 package, no AEC-Q101 qualification | Higher voltage tolerance but higher noise and unqualified for automotive environments | Prefer for industrial non-automotive applications requiring >120 V headroom and where qualification is not mandated |
Compared with 2SC4117-BL,LF, the 2SC4081-GR,LF trades noise and gain linearity for lower cost, while MMBT5551 offers higher voltage rating at the expense of noise performance and automotive compliance-making 2SC4117-BL,LF the optimal choice for AEC-Q101–required, low-noise audio amplification.
Availability
2SC4117-BL,LF is available at Aetrix Electronics and suitable for automotive infotainment systems, professional audio equipment, and industrial sensor interface modules requiring stable component supply with long-term lifecycle support.
Supply support for 2SC4117-BL,LF 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
Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and logic ICs with emphasis on reliability, efficiency, and automotive-grade validation.
The 2SC4117-BL,LF belongs to Toshiba's legacy silicon bipolar transistor product line, engineered specifically for high-linearity, low-noise audio-frequency amplification in space-constrained and thermally demanding environments.
FAQ
What does the "BL" suffix indicate in 2SC4117-BL,LF?
The "BL" suffix denotes the hFE gain classification for the 2SC4117-BL,LF: a minimum hFE of 350 and maximum of 700 at VCE = 6 V and IC = 2 mA. This grading ensures tighter distribution for precision biasing in amplifier circuits compared to the "GR" (200–400) variant, and is explicitly confirmed in Toshiba's Electrical Characteristics table.
Is 2SC4117-BL,LF qualified for automotive use?
Yes, the 2SC4117-BL,LF is AEC-Q101 qualified, as stated in the official Toshiba datasheet. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD robustness-validating its suitability for automotive audio subsystems and body control modules where reliability under thermal and electrical stress is mandatory.
What is the thermal derating behavior of 2SC4117-BL,LF on FR4 PCB?
The 2SC4117-BL,LF has a maximum collector power dissipation of 200 mW when mounted on a specified FR4 board (25.4 mm × 25.4 mm × 1.6 mm with three 0.5 mm² Cu pads). Above Ta = 25 °C, power must be linearly derated at 1.6 mW/°C, reaching zero dissipation at Ta = 150 °C-consistent with its Tj(max) = 150 °C rating under Note 2 conditions.
How does the noise figure of 2SC4117-BL,LF compare across operating conditions?
The 2SC4117-BL,LF achieves a typical noise figure of 1 dB at VCE = 6 V, IC = 0.1 mA, f = 1 kHz, and RG = 10 kΩ. The datasheet specifies a maximum NF of 10 dB under identical conditions. Performance degrades outside this test setup-e.g., NF rises significantly at IC > 1 mA or f > 10 kHz-so optimal low-noise operation requires adherence to these bias and source impedance conditions.
What complementary PNP transistor pairs with 2SC4117-BL,LF?
The 2SC4117-BL,LF is explicitly designated as complementary to the 2SA1587 PNP transistor in Toshiba's documentation. Both share matched VCEO = 120 V, comparable hFE ranges, and SC-70 packaging-enabling symmetrical push-pull output stages with minimized crossover distortion in Class-AB audio amplifiers.
2SC4117-BL,LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 120 V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 1mA, 10mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 6V
- Power - Max:
- 100 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70
2SC4117-BL,LF FAQ
1.How can I place an order for 2SC4117-BL,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for 2SC4117-BL,LF 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 2SC4117-BL,LF reliable?
The price and inventory of 2SC4117-BL,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC4117-BL,LF is usually 5 days.
3.What payment methods are accepted for 2SC4117-BL,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC4117-BL,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2SC4117-BL,LF?
2SC4117-BL,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2SC4117-BL,LF 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 2SC4117-BL,LF?
For technical support, including 2SC4117-BL,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC4117-BL,LF requirements.
6.How does Aetrix verify that 2SC4117-BL,LF is sourced from the original manufacturer or authorized distributors?
All 2SC4117-BL,LF 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 2SC4117-BL,LF meets industry standards.
7.What is the process for return or replacement of 2SC4117-BL,LF?
All 2SC4117-BL,LF units undergo pre-shipment inspection (PSI). If there is an issue with 2SC4117-BL,LF, 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 2SC4117-BL,LF part is unused and in its original packaging.
Return procedure for 2SC4117-BL,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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