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

onsemi 2SC536KE-NP-AA

Name: 2SC536KE-NP-AA
Brand: onsemi
SKU: 2SC536KE-NP-AA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC536KE-NP-AA

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: -

Datasheet:: 2SC536KE-NP-AA.pdf

Description:: SMALL SIGNAL NPN SILICON

Quantity:: RFQ Add To RFQ list

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Inventory:21,000

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Product details

Overview

2SC536KE-NP-AA from onsemi is an NPN bipolar junction transistor rated for 50 V V_CEO, 150 mA I_C, and 500 mW P_C, featuring low V_CE(sat) of –0.3 V at I_C = 100 mA / I_B = 10 mA, f_T = 200 MHz, and h_FE up to 560 - used in general-purpose amplification and switching in consumer audio, power supply control, and signal conditioning circuits.

For engineers reviewing the 2SC536KE-NP-AA datasheet, pinout, applications, or equivalent options, key selection criteria include verified h_FE ranking (F/G), TO-92-compatible SC-43A package dimensions, V_CE(sat) performance under pulsed vs. DC conditions, and ASO curve compliance for safe operating area design.

Technical Context

The 2SC536KE-NP-AA is a silicon NPN planar transistor optimized for medium-speed switching and linear amplification across low-to-high frequency ranges. Its gain-bandwidth product of 200 MHz and h_FE range of 160–560 (rank-dependent) support stable biasing in Class-A and Class-AB stages, while its 500 mW power dissipation and 150°C junction temperature rating enable operation in thermally constrained PCB layouts.

Designed with low saturation voltage (–0.3 V) and high output capacitance tolerance (C_ob = 3.0 pF at V_CB = –6 V), it delivers efficient current switching in relay drivers and LED constant-current sources without requiring external snubbing. The device's SOA curve supports 400 mA pulsed collector current at 10 ms duty cycle, confirming robust transient handling capability.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum allowable collector-emitter voltage before breakdown; defines safe headroom in 24 V and 36 V supply rails.
I_C	150 mA DC - Continuous collector current limit; sets upper bound for load-driving capability in small-signal switching.
f_T	200 MHz - Gain-bandwidth product; enables stable amplification up to ~30 MHz with moderate gain (e.g., 10×).
V_CE(sat)	–0.3 V at I_C/I_B = 100 mA/10 mA - Low saturation voltage reduces conduction loss and self-heating in saturated-switch applications.
h_FE	160–560 (Rank F/G) - DC current gain range; determines base drive requirements and bias stability across production lots.
C_ob	3.0 pF at V_CB = –6 V - Output capacitance; impacts high-frequency response and switching speed in tuned amplifier stages.
P_C	500 mW - Maximum power dissipation at T_a = 25°C; requires thermal derating above 25°C per published PC–Ta curve.

Pinout & Package

Package: SC-43A (TO-92 variant), epoxy-molded, through-hole, 3-pin configuration with standard lead spacing (2.54 mm pitch). Dimensions: 4.5 mm × 3.7 mm × 3.5 mm (L × W × H), mass = 0.19 g.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit node; connects to ground or low-side return path in common-emitter configurations.
2	Collector	Current entry node; ties to load or positive rail; primary heat-generating terminal under conduction.
3	Base	Control input; requires current-limited drive (e.g., via series resistor) to achieve specified h_FE-dependent I_C.

Key Features

Feature	Design Value
Low V_CE(sat)	–0.3 V enables <100 mW conduction loss at 100 mA, reducing thermal stress in compact PCBs.
Wide ASO	Validated safe operating area supports 400 mA pulsed current at 10 ms, suitable for intermittent load switching.
High f_T	200 MHz allows use in RF preamplifiers up to 30 MHz and fast digital logic interfaces (e.g., TTL-level translators).
Rank-classified h_FE	F (160–320) and G (280–560) variants ensure predictable base drive sizing in production designs.
Pb-Free construction	Complies with RoHS Directive 2011/65/EU; compatible with lead-free reflow and wave soldering processes.

Applications

Audio Preamp Stage	DC-DC Feedback Transistor
Use Scenario: Low-noise voltage amplification in portable headphone amplifier inputs. IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter topology with emitter degeneration. Use Value: h_FE ≥ 280 (Rank G) ensures stable gain over temperature; f_T = 200 MHz preserves bandwidth beyond audible range (20 kHz).	Use Scenario: Error amplifier transistor in isolated flyback converter feedback loop. IC Role / Device Role / Timing Role: Linear current source driving optocoupler LED to regulate secondary-side output voltage. Use Value: Low V_CE(sat) minimizes voltage drop across transistor, improving regulation accuracy and reducing power loss in feedback path.
LED Constant-Current Driver	Relay Interface Switch
Use Scenario: Precision current sink for indicator LEDs in industrial HMIs. IC Role / Device Role / Timing Role: Saturated switch controlling LED anode current via emitter-follower or common-emitter configuration. Use Value: 150 mA I_C rating and 500 mW P_C allow direct drive of multi-LED strings without heatsinking at ambient ≤ 50°C.	Use Scenario: Microcontroller-driven relay coil driver in PLC I/O modules. IC Role / Device Role / Timing Role: High-gain saturated switch interfacing 3.3 V/5 V GPIO to 12 V/24 V relay coils. Use Value: h_FE ≥ 160 ensures full saturation with ≤ 1 mA base drive, reducing MCU port loading and enabling direct GPIO control.

Audio Preamp Stage

DC-DC Feedback Transistor

Use Scenario: Low-noise voltage amplification in portable headphone amplifier inputs.

IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter topology with emitter degeneration.

Use Value: h_FE ≥ 280 (Rank G) ensures stable gain over temperature; f_T = 200 MHz preserves bandwidth beyond audible range (20 kHz).

Use Scenario: Error amplifier transistor in isolated flyback converter feedback loop.

IC Role / Device Role / Timing Role: Linear current source driving optocoupler LED to regulate secondary-side output voltage.

Use Value: Low V_CE(sat) minimizes voltage drop across transistor, improving regulation accuracy and reducing power loss in feedback path.

LED Constant-Current Driver

Relay Interface Switch

Use Scenario: Precision current sink for indicator LEDs in industrial HMIs.

IC Role / Device Role / Timing Role: Saturated switch controlling LED anode current via emitter-follower or common-emitter configuration.

Use Value: 150 mA I_C rating and 500 mW P_C allow direct drive of multi-LED strings without heatsinking at ambient ≤ 50°C.

Use Scenario: Microcontroller-driven relay coil driver in PLC I/O modules.

IC Role / Device Role / Timing Role: High-gain saturated switch interfacing 3.3 V/5 V GPIO to 12 V/24 V relay coils.

Use Value: h_FE ≥ 160 ensures full saturation with ≤ 1 mA base drive, reducing MCU port loading and enabling direct GPIO control.

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
2SC536NF-NPA-AT	Same die, Rank F (h_FE = 160–320); identical SC-43A package and marking "C536".	No functional difference; intended for cost-sensitive designs where lower h_FE margin is acceptable.	Select when base drive availability is limited and tighter h_FE tolerance simplifies bias network design.
MPSA18	Higher V_CEO (50 V same), but lower f_T (150 MHz), higher V_CE(sat) (–0.5 V), and different h_FE binning (100–300).	Less suitable for >20 MHz amplification; better for pure switching where gain consistency is secondary.	Choose when legacy footprint compatibility is required and bandwidth demands are below 15 MHz.

Compared with 2SC536KE-NP-AA, the 2SC536NF-NPA-AT offers identical form and fit with reduced h_FE spread, while MPSA18 trades bandwidth and saturation performance for broader industry availability and mature qualification history - making the former ideal for new designs needing gain predictability, the latter for drop-in replacements in legacy systems.

Availability

2SC536KE-NP-AA is available at Aetrix Electronics and suitable for audio preamplification, DC-DC feedback control, and LED constant-current driving requiring stable component supply, consistent h_FE ranking, and RoHS-compliant through-hole packaging.

Supply support for 2SC536KE-NP-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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The 2SC536KE-NP-AA belongs to onsemi's general-purpose bipolar transistor product line, engineered for reliable, cost-effective amplification and switching in space-constrained, thermally demanding applications where predictable gain and low saturation voltage are critical.

FAQ

What is the maximum continuous collector current for the 2SC536KE-NP-AA?

The 2SC536KE-NP-AA has a maximum continuous collector current (I_C) of 150 mA at T_a = 25°C. Derating is required above this ambient temperature per the published P_C–T_a curve; at 75°C, usable I_C drops to approximately 100 mA to maintain safe junction temperature. This rating applies under DC conditions - pulsed operation allows up to 400 mA for 10 ms with 10% duty cycle.

Does the 2SC536KE-NP-AA have a Pb-Free designation?

Yes, the 2SC536KE-NP-AA is Pb-Free and RoHS-compliant, meeting EU Directive 2011/65/EU. Its SC-43A package uses lead-free solderable terminations and conforms to onsemi's standardized green packaging requirements, supporting both wave and reflow soldering processes without exemption requests.

How does the h_FE ranking affect selection of the 2SC536KE-NP-AA?

The 2SC536KE-NP-AA is ranked by DC current gain: Rank F (h_FE = 160–320) and Rank G (h_FE = 280–560). This binning ensures predictable base drive requirements - Rank G supports lower base current in high-gain amplifier stages, while Rank F improves consistency in switching applications where excessive gain could cause slow turn-off. The "KE" suffix indicates Rank G.

What is the typical output capacitance (C_ob) of the 2SC536KE-NP-AA and how does it impact circuit design?

The 2SC536KE-NP-AA has a typical output capacitance (C_ob) of 3.0 pF at V_CB = –6 V and f = 1 MHz. This value directly limits high-frequency gain and phase margin in amplifier designs; for example, in a 50 MHz tuned stage, C_ob contributes measurable Miller effect loading. Layout best practices include minimizing collector trace length and avoiding adjacent high-impedance nodes to preserve bandwidth.

Can the 2SC536KE-NP-AA be used in place of the 2SC536NG-NPA-AT?

Yes - the 2SC536KE-NP-AA and 2SC536NG-NPA-AT share identical electrical specifications, SC-43A package, and Rank G h_FE (280–560). Differences are limited to ordering nomenclature and internal lot traceability; both are manufactured by onsemi to the same No. 6324 specification and may be interchanged without design or layout changes.

2SC536KE-NP-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:: -

2SC536KE-NP-AA FAQ

1.How can I place an order for 2SC536KE-NP-AA through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC536KE-NP-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 2SC536KE-NP-AA reliable?

The price and inventory of 2SC536KE-NP-AA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC536KE-NP-AA is usually 5 days.

3.What payment methods are accepted for 2SC536KE-NP-AA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC536KE-NP-AA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC536KE-NP-AA?

2SC536KE-NP-AA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC536KE-NP-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 2SC536KE-NP-AA?

For technical support, including 2SC536KE-NP-AA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC536KE-NP-AA requirements.

6.How does Aetrix verify that 2SC536KE-NP-AA is sourced from the original manufacturer or authorized distributors?

All 2SC536KE-NP-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 2SC536KE-NP-AA meets industry standards.

7.What is the process for return or replacement of 2SC536KE-NP-AA?

All 2SC536KE-NP-AA units undergo pre-shipment inspection (PSI). If there is an issue with 2SC536KE-NP-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 2SC536KE-NP-AA part is unused and in its original packaging.

Return procedure for 2SC536KE-NP-AA:

1.Submit a request within 90 days.

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

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