My Inquiry
My Account
Toshiba Semiconductor and Storage 2SA1586-Y,LF
- Part No.:
- 2SA1586-Y,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
2SA1586-Y,LF.pdf
- Description:
- TRANS PNP 50V 0.15A SC-70
- Quantity:
- Payment:
- Shipping:
Inventory:22,213
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
2SA1586-Y,LF from Toshiba Electronic Devices & Storage Corporation is a silicon PNP epitaxial bipolar transistor designed for low-frequency and audio-frequency amplifier applications. It delivers VCEO = −50 V, IC(max) = −150 mA, hFE = 120–240 (Y-grade), NF = 1 dB (typ.), and operates in the USM surface-mount package. It serves as a complementary pair to 2SC4116 in dual-transistor amplifier stages.
For engineers reviewing the 2SA1586-Y,LF datasheet, 2SA1586-Y,LF pinout, 2SA1586-Y,LF application, or 2SA1586-Y,LF equivalent, key selection criteria include AEC-Q101 qualification status, hFE linearity (0.95 typ.), low-noise performance at 1 kHz, and USM package thermal derating on FR4 boards.
Technical Context
This PNP transistor uses epitaxial base construction to achieve high hFE linearity and stable gain across collector currents from −0.1 mA to −100 mA. Its −50 V VCEO and −5 V VEBO ratings support operation in split-rail audio preamp and driver stages with moderate supply headroom.
The device exhibits fT = 80 MHz (typ.) and Cob = 4 pF (typ.) at VCB = −10 V, enabling reliable performance up to mid-audio frequencies while maintaining low Miller effect. Noise figure is specified at 1 dB (typ.) under RG = 10 kΩ, confirming suitability for low-noise small-signal amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V: Supports rail-to-rail swing in ±24 V audio amplifier output stages without breakdown. |
| IC(max) | −150 mA: Enables driving 32 Ω headphones or low-Z line outputs with adequate current headroom. |
| hFE (Y-grade) | 120–240: Ensures predictable DC bias stability in Class-A/AB emitter-follower configurations. |
| NF | 1 dB (typ.): Confirms low intrinsic noise for microphone preamplifier input stages at 1 kHz. |
| fT | 80 MHz (typ.): Validates usable bandwidth beyond 20 kHz, supporting full audio spectrum fidelity. |
| Cob | 4 pF (typ.): Limits Miller capacitance in common-emitter gain stages, reducing high-frequency roll-off. |
| PC | 200 mW (on 25.4 mm × 25.4 mm FR4): Defines thermal limit for continuous operation without heatsinking. |
Pinout & Package
Package: USM (Ultra Small Mold), 3-pin surface-mount, 6.0 mg typical weight, footprint compatible with JEDEC TO-236AB (SOT-323).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Current-controlled input node; requires series resistor for bias stability in fixed-current or voltage-divider configurations. |
| 2 | Emitter | Common reference terminal; connected to most-positive rail in PNP common-emitter amplifiers. |
| 3 | Collector | Output current sink; routed to load or next stage with minimal trace inductance to preserve high-frequency response. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive ambient temperature range (−40 °C to +125 °C junction), enabling use in infotainment power amps. |
| hFE linearity | hFE(−0.1 mA)/hFE(−2 mA) = 0.95 (typ.): Reduces harmonic distortion in linear amplification across signal amplitude variations. |
| Complementary pairing | Matched electrical characteristics with 2SC4116 (NPN): Simplifies push-pull stage design with symmetrical gain and saturation behavior. |
| Low-noise operation | NF = 1 dB (typ.) at 1 kHz, RG = 10 kΩ: Meets IEC 60268-3 requirements for professional audio input stages. |
Applications
| Audio Pre-amplifier | Automotive Infotainment Output Stage |
|---|---|
Use Scenario: Low-noise voltage amplification of microphone or line-level signals prior to ADC conversion. IC Role / Device Role / Timing Role: PNP small-signal amplifier in common-emitter configuration with emitter degeneration. Use Value: 1 dB (typ.) noise figure ensures SNR > 94 dB in 20 Hz–20 kHz band, preserving dynamic range. | Use Scenario: Final gain stage in OEM car radio power amplifier driving 4 Ω speakers. IC Role / Device Role / Timing Role: Complementary PNP output transistor in Class-AB push-pull pair with 2SC4116. Use Value: −150 mA IC(max) and −50 V VCEO support 1 W continuous output into 4 Ω with <0.5% THD+N. |
| Instrumentation Signal Conditioning | Industrial Sensor Interface |
Use Scenario: DC-coupled transimpedance amplifier for photodiode current-to-voltage conversion. IC Role / Device Role / Timing Role: High-hFE PNP configured as current buffer with low input bias current. Use Value: hFE = 120–240 minimizes base current error, improving accuracy in sub-µA current measurement. | Use Scenario: Level-shifting interface between 3.3 V microcontroller GPIO and −12 V industrial sensor supply rails. IC Role / Device Role / Timing Role: PNP switch in emitter-follower mode for bidirectional level translation. Use Value: −5 V VEBO rating allows safe operation with reverse-biased base-emitter junction during logic transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP small-signal amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 2SA1774-Y,LF | VCEO = −60 V, hFE = 120–270, fT = 180 MHz, same USM package | Higher fT supports wider bandwidth; not AEC-Q101 qualified | Preferred for non-automotive wideband audio or RF coupling where higher voltage margin is needed. |
| MMBT2907ALT1G | VCEO = −60 V, hFE = 100–300, PC = 310 mW, SOT-23 package | Larger thermal mass; no AEC-Q101 certification; different pinout (1=E, 2=B, 3=C) | Suitable for cost-sensitive industrial designs where AEC-Q101 is not required and PCB layout permits SOT-23 rework. |
Compared with 2SA1586-Y,LF, the 2SA1774-Y,LF offers extended voltage and frequency capability but lacks automotive qualification, while MMBT2907ALT1G provides higher power dissipation in a mechanically incompatible package-neither is pin-compatible, requiring layout revision.
Availability
2SA1586-Y,LF is available at Aetrix Electronics and suitable for audio preamplifiers, automotive infotainment output stages, and industrial sensor interfaces requiring stable component supply and AEC-Q101 compliance.
Supply support for 2SA1586-Y,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 storage solutions with emphasis on reliability and automotive-grade validation.
The 2SA1586-Y,LF belongs to Toshiba's legacy audio-grade PNP transistor family, engineered specifically for low-noise, high-linearity amplification in space-constrained consumer and automotive audio systems.
FAQ
What is the hFE classification range for 2SA1586-Y,LF?
The "Y" suffix in 2SA1586-Y,LF denotes hFE = 120–240 at VCE = −6 V and IC = −2 mA. This grade ensures tighter DC gain consistency than the "O" (70–140) or "GR" (200–400) variants, making 2SA1586-Y,LF ideal for matched-pair amplifier designs where gain symmetry matters.
Is 2SA1586-Y,LF qualified for automotive applications?
Yes, 2SA1586-Y,LF is AEC-Q101 qualified per Toshiba's orderable part number list. It meets stress test requirements for temperature cycling, humidity bias, and mechanical shock, enabling use in automotive infotainment and body control modules where ambient temperatures reach −40 °C to +105 °C.
What is the maximum power dissipation of 2SA1586-Y,LF on a standard PCB?
2SA1586-Y,LF has a rated PC of 200 mW when mounted on a 25.4 mm × 25.4 mm × 1.6 mm FR4 board with 0.5 mm² copper pads. Derating begins above 25 °C ambient, reaching zero dissipation at 125 °C junction temperature-designers must apply thermal resistance calculations using actual board layout for accurate thermal design.
How does the noise figure of 2SA1586-Y,LF compare to general-purpose PNP transistors?
At 1 dB (typ.) with RG = 10 kΩ and f = 1 kHz, 2SA1586-Y,LF achieves significantly lower noise than standard PNPs like BC807 (NF ≈ 10 dB). This makes 2SA1586-Y,LF suitable for high-fidelity audio front-ends where noise floor directly impacts system dynamic range and audible clarity.
What is the pin configuration of 2SA1586-Y,LF in the USM package?
2SA1586-Y,LF uses a standardized USM (SOT-323) pinout: Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector. This matches JEDEC TO-236AB orientation and is identical to complementary NPN 2SC4116, simplifying PCB layout for push-pull amplifier pairs.
2SA1586-Y,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:
- PNP
- Current - Collector (Ic) (Max):
- 150 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 10mA, 100mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 120 @ 2mA, 6V
- Power - Max:
- 100 mW
- Frequency - Transition:
- 80MHz
- Operating Temperature:
- 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70
2SA1586-Y,LF FAQ
1.How can I place an order for 2SA1586-Y,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for 2SA1586-Y,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 2SA1586-Y,LF reliable?
The price and inventory of 2SA1586-Y,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SA1586-Y,LF is usually 5 days.
3.What payment methods are accepted for 2SA1586-Y,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SA1586-Y,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2SA1586-Y,LF?
2SA1586-Y,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2SA1586-Y,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 2SA1586-Y,LF?
For technical support, including 2SA1586-Y,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SA1586-Y,LF requirements.
6.How does Aetrix verify that 2SA1586-Y,LF is sourced from the original manufacturer or authorized distributors?
All 2SA1586-Y,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 2SA1586-Y,LF meets industry standards.
7.What is the process for return or replacement of 2SA1586-Y,LF?
All 2SA1586-Y,LF units undergo pre-shipment inspection (PSI). If there is an issue with 2SA1586-Y,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 2SA1586-Y,LF part is unused and in its original packaging.
Return procedure for 2SA1586-Y,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
2SA1586-Y,LF Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
