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onsemi KSD882RS
- Part No.:
- KSD882RS
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-225AA, TO-126-3
- Datasheet:
-
KSD882RS.pdf
- Description:
- TRANS NPN 30V 3A TO-126-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,359
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Product details
Overview
KSD882RS from onsemi is an NPN epitaxial silicon power transistor in TO-126-3LD package, rated for 30 V VCEO, 3 A DC collector current, and 10 W power dissipation at TC = 25°C; it delivers hFE of 160–320 at IC = 1 A and is optimized for audio frequency power amplifier stages.
For engineers reviewing the KSD882RS 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 hFE grade Y classification per onsemi's marking system.
Technical Context
This discrete NPN bipolar junction transistor operates in linear amplification mode with a typical fT of 90 MHz and output capacitance Cob of 45 pF at VCB = 10 V, enabling stable mid-band audio signal handling without RF instability. Its VCE(sat) ≤ 0.5 V at IC = 2 A / IB = 0.2 A ensures low conduction loss in Class AB output stages.
The device features a maximum junction temperature of +150°C and thermal derating to zero power at TC = 175°C, supporting robust thermal design in compact heatsinked enclosures. Its SOA curve explicitly defines pulsed (10 ms, 50% duty) and DC limits, critical for reliability in continuous audio output applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 30 V - Maximum sustainable collector-emitter voltage before breakdown under open-base condition; sets rail voltage limit in amplifier designs. |
| IC (DC) | 3 A - Continuous collector current rating; determines usable output power into 4–8 Ω loads with appropriate biasing. |
| PD @ TC=25°C | 10 W - Total device dissipation at case temperature 25°C; requires heatsinking for sustained operation above ambient. |
| hFE @ IC=1 A | 160–320 - DC current gain range for grade Y; enables predictable base drive sizing in linear output stages. |
| VCE(sat) | ≤0.5 V @ IC=2 A/IB=0.2 A - Low saturation voltage minimizes power loss and heat generation during high-current conduction. |
| fT | 90 MHz - Current gain bandwidth product; supports full audio band (20 Hz–20 kHz) with ample gain margin and phase stability. |
Pinout & Package
Package: TO-126-3LD (Case 340AS), surface-mount compatible through-hole package with emitter-collector-base terminal layout and integral metal tab for heatsink attachment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink node | Connected to ground or low-impedance return path; carries full load current and must be routed with low-inductance trace. |
| 2 (Collector) | High-side current source node | Connected to positive supply rail via output coupling capacitor; requires thermal relief and heatsink interface. |
| 3 (Base) | Control input node | Driven by preamplifier stage; requires current-limiting resistor and may need Baker clamp for switching speed control. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary pair with KSB772 | Enables matched push-pull output stages with symmetric NPN/PNP characteristics and consistent thermal tracking. |
| Low-speed switching capability | Optimized for linear audio amplification rather than fast digital switching; avoids unintended oscillation in analog circuits. |
| hFE grade Y classification | Guarantees hFE between 160–320 at IC = 1 A, simplifying bias network design and reducing unit-to-unit gain variation. |
| SOA-defined pulsed operation | Supports 7 A pulse current (PW ≤ 10 ms, duty ≤ 50%) for transient peak handling without second breakdown. |
Applications
| Audio Power Amplifier | DC Motor Driver (Low-Speed) |
|---|---|
Use Scenario: Final output stage in 5–15 W stereo audio amplifier driving 4–8 Ω speakers. IC Role / Device Role / Timing Role: NPN power switch in Class AB topology, delivering amplified current to speaker load. Use Value: Low VCE(sat) reduces heat generation; wide SOA prevents thermal runaway during dynamic music peaks. | Use Scenario: H-bridge half-bridge leg controlling brushed DC motor in industrial actuators or HVAC dampers. IC Role / Device Role / Timing Role: Linear current-control transistor regulating motor winding current in closed-loop position systems. Use Value: Predictable hFE grading enables accurate current setting; 30 V rating accommodates 24 V nominal bus with surge margin. |
| Power Supply Pass Transistor | Linear Voltage Regulator Output Stage |
Use Scenario: Series pass element in adjustable linear power supply delivering up to 3 A at ≤25 V output. IC Role / Device Role / Timing Role: High-current series regulator transistor dissipating excess input-output differential voltage. Use Value: 10 W dissipation rating and thermal derating curve allow reliable operation with moderate heatsinking at 25°C ambient. | Use Scenario: Output transistor in fixed-voltage linear regulator (e.g., 12 V or 15 V) for instrumentation or sensor bias rails. IC Role / Device Role / Timing Role: Emitter-follower configured pass device providing low-noise, low-ripple regulated output. Use Value: Low VBE(sat) (≤2.0 V) preserves headroom; tight hFE binning improves load regulation accuracy. |
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 VCEO/IC/PD ratings but TO-252 (DPAK) package; hFE min 60 at IC=1 A (no Y-grade binning). | Suitable for SMT assembly; lacks guaranteed hFE spread for precision biasing. | Select when board space or reflow compatibility outweighs gain consistency requirements. |
| 2SC5200 | Higher VCEO (230 V), higher IC (15 A), larger TO-3P package; fT ~30 MHz. | Targeted at high-power audio amplifiers (>50 W); over-specified for low-to-mid power use cases. | Choose only when extended voltage headroom or higher current capacity is required; adds cost and thermal mass. |
Compared with MJD882G and 2SC5200, the KSD882RS offers tighter hFE control in a through-hole TO-126 package ideal for prototyping and medium-power audio, while balancing thermal performance, gain predictability, and PCB assembly flexibility.
Availability
KSD882RS is available at Aetrix Electronics and suitable for audio power amplifiers, linear power supplies, DC motor drivers, and instrumentation regulators requiring stable component supply across production lifecycles.
Supply support for KSD882RS 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 focused on energy-efficient electronics for automotive, industrial, cloud, and consumer applications.
The KSD882RS belongs to onsemi's legacy bipolar power transistor family designed specifically for linear audio amplification and medium-power analog control, emphasizing SOA integrity and hFE consistency.
FAQ
What is the pin configuration of the KSD882RS?
The KSD882RS uses a TO-126-3LD package with pin 1 as emitter, pin 2 as collector, and pin 3 as base-verified in onsemi's mechanical drawing CASE 340AS. This configuration is standardized across the KSD882 series and matches the complementary KSB772 PNP device for push-pull layouts. The metal tab is electrically connected to the collector.
Does the KSD882RS have a Pb-free construction?
Yes, the KSD882RS is manufactured in a Pb-free TO-126-3LD package per onsemi's ordering codes KSD882YS and KSD882YSTU. RoHS compliance is confirmed in the official datasheet revision 4 (April 2025), and the device carries the "Pb-Free" designation in its packaging documentation.
What does the 'Y' suffix in KSD882RS indicate?
The 'Y' in KSD882RS denotes the hFE grade per onsemi's classification table: hFE2 (measured at VCE = 2 V, IC = 1 A) falls within 160–320. This binning ensures predictable DC gain for stable biasing in linear amplifier designs, distinguishing it from R-, O-, or G-grade variants of the same base part.
Can the KSD882RS replace the KSD882 without changes?
Yes-the KSD882RS is a direct variant of the base KSD882 with identical electrical specifications, package, and pinout. The 'RS' suffix reflects onsemi's internal revision or tape-and-reel packaging variant; all absolute maximum ratings, electrical characteristics, and thermal data in the KSD882/D datasheet apply fully to KSD882RS.
Is the KSD882RS suitable for switching applications?
The KSD882RS is characterized for low-speed switching per its datasheet features, but it is primarily optimized for linear operation. While usable in non-critical switching roles (e.g., relay drivers), its fT and storage time are not specified for high-frequency PWM; for dedicated switching, consider devices explicitly rated for switching speed and charge parameters.
KSD882RS 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:
- 60 @ 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
KSD882RS FAQ
1.How can I place an order for KSD882RS through Aetrix?
Please submit a Request for Quotation (RFQ) for KSD882RS 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 KSD882RS reliable?
The price and inventory of KSD882RS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSD882RS is usually 5 days.
3.What payment methods are accepted for KSD882RS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSD882RS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSD882RS?
KSD882RS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSD882RS 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 KSD882RS?
For technical support, including KSD882RS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSD882RS requirements.
6.How does Aetrix verify that KSD882RS is sourced from the original manufacturer or authorized distributors?
All KSD882RS 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 KSD882RS meets industry standards.
7.What is the process for return or replacement of KSD882RS?
All KSD882RS units undergo pre-shipment inspection (PSI). If there is an issue with KSD882RS, 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 KSD882RS part is unused and in its original packaging.
Return procedure for KSD882RS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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