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

onsemi KSD882YS

Name: KSD882YS
Brand: onsemi
SKU: KSD882YS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: KSD882YS

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-225AA, TO-126-3

Datasheet:: KSD882YS.pdf

Description:: TRANS NPN 30V 3A TO-126-3

Quantity:: RFQ Add To RFQ list

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Inventory:18

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Product details

Overview

KSD882YS from onsemi is an NPN epitaxial silicon power transistor in TO-126-3LD package, rated for 30 V V_CEO, 3 A DC collector current, and 10 W total dissipation at T_C = 25°C; it delivers h_FE of 160–320 at I_C = 1 A and is optimized for audio frequency power amplifier stages.

For engineers reviewing the KSD882YS datasheet, pinout, applications, or equivalent options, key selection considerations include its complementary pairing with KSB772, low-speed switching capability, safe operating area (SOA) derating behavior, and h_FE grade Y classification (160–320).

Technical Context

The KSD882YS operates as a medium-power linear amplifying transistor with fixed NPN polarity and epitaxial base construction. Its SOA is defined by both dissipation-limited and secondary breakdown-limited boundaries, with pulse operation permitted up to 7 A under 10 ms / 50% duty cycle conditions.

It exhibits V_CE(sat) ≤ 0.5 V at I_C = 2 A / I_B = 0.2 A and f_T = 90 MHz at V_CE = 5 V / I_E = 0.1 A - confirming suitability for audio-band amplification rather than RF or high-speed switching.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 V - maximum continuous collector-emitter voltage before breakdown; defines rail voltage limit in Class-A/B audio output stages
I_C (DC)	3 A - steady-state collector current handling; supports ≥5 W audio output into 8 Ω with adequate heatsinking
P_D @ T_C=25°C	10 W - thermal power limit at case temperature; requires thermal interface design for sustained operation
h_FE @ I_C=1 A	160–320 - gain range for Y-grade devices; enables stable biasing in emitter-follower or common-emitter driver configurations
V_CE(sat)	≤0.5 V @ I_C=2 A/I_B=0.2 A - low saturation voltage reduces conduction loss and improves efficiency in linear amplifiers
f_T	90 MHz - unity-gain bandwidth; sufficient for full audio spectrum (20 Hz–20 kHz) with ample gain margin

Pinout & Package

Package: TO-126-3LD (Case 340AS), surface-mount compatible through-hole package with integral heat slug; pin 2 (collector) electrically connected to tab for direct heatsink mounting.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current sink terminal; referenced to ground or negative rail in common-emitter configurations
2	Collector	Current source terminal; electrically tied to metal tab for thermal and electrical connection to heatsink
3	Base	Control input; requires current-limited drive (max I_B = 0.6 A) to avoid saturation overshoot

Key Features

Feature	Design Value
Complementary Pairing	Designed as NPN counterpart to KSB772 PNP transistor - enables push-pull audio output stage implementation without gain mismatch
h_FE Grade Y	Guaranteed h_FE = 160–320 at I_C = 1 A - ensures predictable DC bias stability across production lots
SOA Compliance	Defined safe operating area curves support reliable operation under transient overload (e.g., speaker pop, clipping)
Low V_CE(sat)	0.3 V typical at I_C = 2 A - minimizes thermal stress during high-current conduction in linear mode

Applications

Audio Power Amplifier	DC Motor Driver (Low-Speed)
Use Scenario: Final output stage in 5–10 W stereo audio amplifier driving 4–8 Ω speakers. IC Role / Device Role / Timing Role: NPN power transistor in common-emitter configuration delivering amplified current to load. Use Value: Low V_CE(sat) and controlled h_FE reduce distortion and thermal drift, supporting THD < 1% at full output.	Use Scenario: H-bridge half-bridge leg controlling brushed DC motor in industrial actuators or HVAC dampers. IC Role / Device Role / Timing Role: Medium-current switching element operating in linear or saturated mode for torque control. Use Value: SOA-rated pulse current (7 A) accommodates motor startup surge; TO-126 tab enables direct heatsink attachment.
Complementary Push-Pull Stage	Linear Voltage Regulator Pass Element
Use Scenario: Paired with KSB772 in Class-B/BTL output stage for battery-powered portable audio systems. IC Role / Device Role / Timing Role: NPN half of matched complementary pair providing symmetrical positive-half conduction. Use Value: Matched h_FE grading and thermal tracking minimize crossover distortion in analog output stages.	Use Scenario: Series pass transistor in adjustable 3–24 V, 2 A linear regulator for sensitive analog circuitry. IC Role / Device Role / Timing Role: Current-controlled series element regulating output voltage via base drive feedback loop. Use Value: 10 W dissipation rating and SOA compliance allow stable operation under 15 V dropout at 2 A load.

Audio Power Amplifier

DC Motor Driver (Low-Speed)

Use Scenario: Final output stage in 5–10 W stereo audio amplifier driving 4–8 Ω speakers.

IC Role / Device Role / Timing Role: NPN power transistor in common-emitter configuration delivering amplified current to load.

Use Value: Low V_CE(sat) and controlled h_FE reduce distortion and thermal drift, supporting THD < 1% at full output.

Use Scenario: H-bridge half-bridge leg controlling brushed DC motor in industrial actuators or HVAC dampers.

IC Role / Device Role / Timing Role: Medium-current switching element operating in linear or saturated mode for torque control.

Use Value: SOA-rated pulse current (7 A) accommodates motor startup surge; TO-126 tab enables direct heatsink attachment.

Complementary Push-Pull Stage

Linear Voltage Regulator Pass Element

Use Scenario: Paired with KSB772 in Class-B/BTL output stage for battery-powered portable audio systems.

IC Role / Device Role / Timing Role: NPN half of matched complementary pair providing symmetrical positive-half conduction.

Use Value: Matched h_FE grading and thermal tracking minimize crossover distortion in analog output stages.

Use Scenario: Series pass transistor in adjustable 3–24 V, 2 A linear regulator for sensitive analog circuitry.

IC Role / Device Role / Timing Role: Current-controlled series element regulating output voltage via base drive feedback loop.

Use Value: 10 W dissipation rating and SOA compliance allow stable operation under 15 V dropout at 2 A load.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD882G	Same die, TO-252 (DPAK) package; lower R_θJC (3.5°C/W vs. 5°C/W), no metal tab	Requires PCB copper pour for thermal management; unsuitable where mechanical heatsink mounting is required	Select when surface-mount assembly and thermal vias are available; not drop-in for TO-126 footprint
2SC5200	Higher V_CEO (230 V), higher f_T (30 MHz), larger TO-3P package; h_FE 80–160 (lower gain consistency)	Used in high-voltage audio amplifiers (>50 W); over-specified for 30 V/3 A applications	Select only when extended voltage headroom or higher power is needed; not cost-optimized for KSD882YS use cases

Compared with MJD882G and 2SC5200, the KSD882YS offers optimal balance of gain consistency (Y-grade), mechanical heatsink compatibility (TO-126 tab), and SOA-defined reliability for 30 V audio and motor control - making it preferred where thermal mounting simplicity and predictable linearity matter most.

Availability

KSD882YS is available at Aetrix Electronics and suitable for audio power amplifiers, low-speed motor drivers, complementary push-pull stages, and linear voltage regulator pass elements requiring stable component supply and long-term industrial availability.

Supply support for KSD882YS 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 manufacturer specializing in energy-efficient power, analog, sensor, and logic solutions for automotive, industrial, and cloud power applications.

The KSD882YS belongs to onsemi's legacy bipolar power transistor product line, engineered specifically for robust linear amplification and low-speed switching in cost-sensitive, thermally constrained audio and control systems.

FAQ

What is the h_FE range for KSD882YS?

The KSD882YS is h_FE grade Y, meaning its DC current gain is guaranteed between 160 and 320 when measured at V_CE = 2 V and I_C = 1 A. This tight binning ensures consistent bias point stability across units in audio amplifier designs. The KSD882YS datasheet specifies this range explicitly in the h_FE Classification table and confirms it under Electrical Characteristics.

Is KSD882YS pin-compatible with KSD882 or KSD882Y?

Yes - KSD882YS shares identical TO-126-3LD package, pinout (E-C-B), and internal die with KSD882 and KSD882Y. The "S" suffix denotes Pb-free packaging per J-STD-609, with no electrical or mechanical differences. The KSD882YS maintains full functional and layout compatibility with earlier variants.

Can KSD882YS replace KSD882 in existing designs?

Yes, KSD882YS is a direct Pb-free replacement for KSD882, with identical absolute maximum ratings, electrical characteristics, and thermal performance. No layout or schematic changes are required. The KSD882YS meets RoHS and JEDEC J-STD-609 requirements while preserving all design margins validated for the original KSD882.

What is the maximum pulsed collector current for KSD882YS?

The KSD882YS supports I_CP = 7 A under pulsed conditions defined as pulse width ≤ 10 ms and duty cycle ≤ 50%. This rating is validated in the Absolute Maximum Ratings table and applies only when case temperature remains within limits. Exceeding these conditions risks secondary breakdown, as shown in Figure 6's SOA curves.

Does KSD882YS have a built-in heatsink tab?

Yes - the KSD882YS uses the TO-126-3LD package (Case 340AS), where pin 2 (collector) is internally connected to the metal tab. This allows direct mechanical and thermal attachment to an external heatsink without insulating hardware, simplifying thermal design in space-constrained audio amplifier modules.

KSD882YS Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-225AA, TO-126-3

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 3 A

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

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 200mA, 2A

Current - Collector Cutoff (Max):: 1µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 160 @ 1A, 2V

Power - Max:: 1 W

Frequency - Transition:: 90MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-126-3

KSD882YS FAQ

1.How can I place an order for KSD882YS through Aetrix?

Please submit a Request for Quotation (RFQ) for KSD882YS 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 KSD882YS reliable?

The price and inventory of KSD882YS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSD882YS is usually 5 days.

3.What payment methods are accepted for KSD882YS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSD882YS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for KSD882YS?

KSD882YS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your KSD882YS 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 KSD882YS?

For technical support, including KSD882YS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSD882YS requirements.

6.How does Aetrix verify that KSD882YS is sourced from the original manufacturer or authorized distributors?

All KSD882YS 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 KSD882YS meets industry standards.

7.What is the process for return or replacement of KSD882YS?

All KSD882YS units undergo pre-shipment inspection (PSI). If there is an issue with KSD882YS, 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 KSD882YS part is unused and in its original packaging.

Return procedure for KSD882YS:

1.Submit a request within 90 days.

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

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