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onsemi KSD882YSTSTU
- Part No.:
- KSD882YSTSTU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-225AA, TO-126-3
- Datasheet:
-
KSD882YSTSTU.pdf
- Description:
- TRANS NPN 30V 3A TO-126-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,533
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Product details
Overview
KSD882YSTSTU 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 supports audio frequency power amplification with fT = 90 MHz.
For engineers reviewing the KSD882YSTSTU datasheet, pinout, applications, or equivalent options, key selection criteria include VCEO/IC rating match, hFE grade Y (160–320), TO-126 mechanical compatibility, saturation voltage under 2 A drive, and complementarity to KSB772 in push-pull amplifier stages.
Technical Context
This discrete NPN transistor operates in linear and switching modes with verified safe operating area up to 2 A DC and 7 A pulse (PW ≤ 10 ms, duty ≤ 50%). Its low-speed switching capability and complementary pairing with KSB772 enable Class AB audio output stages.
Electrical behavior is characterized by VCE(sat) ≤ 0.5 V at IC = 2 A/IB = 0.2 A, VBE(sat) ≤ 2.0 V under same conditions, and Cob = 45 pF at VCB = 10 V - parameters critical for stability and bandwidth control in amplifier feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 30 V - maximum continuous collector-emitter voltage before breakdown; defines rail voltage limit in single-supply audio amps. |
| IC (DC) | 3 A - steady-state collector current handling; supports ≥5 W Class B output into 8 Ω loads. |
| hFE (Grade Y) | 160–320 - guaranteed DC current gain range at IC = 1 A; enables predictable biasing in fixed-gain driver stages. |
| VCE(sat) | ≤0.5 V @ IC=2 A, IB=0.2 A - low saturation voltage reduces conduction loss and thermal stress in switching applications. |
| fT | 90 MHz - current gain bandwidth product; ensures stable operation up to mid-audio frequencies with margin. |
| Cob | 45 pF @ VCB=10 V - output capacitance impacts high-frequency roll-off and Miller effect in common-emitter configurations. |
| PD @ TC=25°C | 10 W - total device dissipation limit; requires heatsinking for sustained >2 W output in linear mode. |
Pinout & Package
Package: TO-126-3LD (Case 340AS), surface-mount compatible with through-hole mounting; thermally enhanced plastic case with integral heat slug.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Connected to ground or low-impedance return path; carries full load current in common-emitter configuration. |
| 2 (Collector) | Current source terminal | Connected to supply rail or load; must be heatsinked when dissipating >1 W continuously. |
| 3 (Base) | Control input | Receives current-limited drive signal; base resistor selection must ensure IB ≥ IC/hFE(min) for saturation. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary pairing | Explicitly designed as NPN counterpart to KSB772 PNP transistor for matched push-pull audio output stages. |
| hFE grading (Y) | Guaranteed 160–320 hFE at IC = 1 A enables consistent DC bias design across production batches. |
| Low VCE(sat) | 0.3 V typical at 2 A ensures <1 W conduction loss in switching regulators or saturated switch applications. |
| Thermal robustness | Junction temperature range −55°C to +150°C supports industrial and automotive under-hood environments. |
| TO-126 mechanical standardization | Case 340AS footprint allows drop-in replacement with other TO-126 devices using identical PCB cutouts and heatsink interfaces. |
Applications
| Audio Power Amplifier | DC Motor Driver Stage |
|---|---|
Use Scenario: Final output stage in 5–10 W Class AB audio amplifier driving 4–8 Ω speakers. IC Role / Device Role / Timing Role: NPN power switching element in complementary emitter-follower configuration. Use Value: Delivers low-distortion output with VCE(sat) ≤ 0.5 V and hFE ≥ 160 ensuring stable quiescent current setting. | Use Scenario: High-side or low-side switch controlling 12 V/2 A brushed DC motors in industrial actuators. IC Role / Device Role / Timing Role: Linear or PWM-driven power transistor regulating motor current. Use Value: Handles 3 A DC and 7 A pulse loads while maintaining safe SOA up to 125°C case temperature. |
| Power Supply Pass Transistor | Relay Driver |
Use Scenario: Series pass element in adjustable linear voltage regulator delivering up to 3 A output. IC Role / Device Role / Timing Role: Voltage-controlled current source regulating output via base bias network. Use Value: 10 W dissipation rating and 30 V VCEO support 24 V input-to-5 V output conversion with adequate headroom. | Use Scenario: Driving 24 V/500 mA electromagnetic relay coils in PLC I/O modules. IC Role / Device Role / Timing Role: Saturated switch interfacing microcontroller GPIO to inductive load. Use Value: Fast turn-on (fT = 90 MHz) and low VBE(sat) reduce coil energize time and driver power loss. |
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 TO-220 package; VCEO = 30 V, IC = 3 A, hFE = 100–300 (no Y-grade binning); higher RthJC. | Requires larger heatsink due to TO-220 thermal resistance; not pin-compatible with TO-126 footprint. | Select when TO-220 board layout exists and hFE tolerance >100 is acceptable. |
| KSC2690Y | TO-126 package; VCEO = 20 V (lower), IC = 2 A, hFE = 160–320; fT = 100 MHz. | Limited to ≤20 V rails; unsuitable for 24 V amplifier supplies where KSD882YSTSTU's 30 V rating provides margin. | Select only for 12 V systems requiring higher fT and matching hFE grade. |
Compared with MJD882G and KSC2690Y, KSD882YSTSTU offers optimal balance of TO-126 mechanical fit, 30 V VCEO headroom, Y-grade hFE consistency, and proven audio amplifier SOA - making it preferred for space-constrained, thermally managed linear power stages.
Availability
KSD882YSTSTU is available at Aetrix Electronics and suitable for audio power amplifiers, DC motor drivers, linear voltage regulators, and relay interface circuits requiring stable component supply and Pb-free compliance.
Supply support for KSD882YSTSTU 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, analog, sensor, and logic solutions for automotive, industrial, and consumer markets.
The KSD882 series belongs to onsemi's general-purpose bipolar power transistor product line, engineered for reliable linear and switching operation in cost-sensitive audio, power control, and interface applications.
FAQ
What is the hFE range for KSD882YSTSTU?
The KSD882YSTSTU is graded as "Y", specifying a guaranteed DC current gain (hFE) range of 160 to 320 when measured at VCE = 2 V and IC = 1 A. This binning ensures consistent bias point stability across production units and simplifies design of fixed-gain amplifier stages without individual transistor trimming. The hFE value is validated per onsemi's KSD882/D datasheet Rev. 4.
Is KSD882YSTSTU pin-compatible with KSD882YS?
Yes, KSD882YSTSTU and KSD882YS share identical TO-126-3LD packaging, pin assignment (Emitter-1, Collector-2, Base-3), and mechanical dimensions. The "TSTU" suffix denotes tape-and-reel packaging (vs. bulk/tube for "YS"), but electrical and thermal specifications, including pinout and solder footprint, are fully identical. Both meet Pb-free requirements per onsemi documentation.
What is the maximum safe operating collector current for KSD882YSTSTU?
KSD882YSTSTU supports 3 A DC collector current at TC = 25°C, with pulse rating of 7 A for PW ≤ 10 ms and duty cycle ≤ 50%. Operation above 3 A DC requires active heatsinking to maintain TC ≤ 25°C; derating begins at 100 mW/°C above 25°C case temperature per the datasheet's power derating curve. Exceeding these limits risks thermal runaway or permanent junction damage.
Does KSD882YSTSTU have a complementary PNP transistor?
Yes, KSD882YSTSTU is explicitly designed as the NPN complement to the KSB772 PNP transistor. Both share matched VCEO, IC, and hFE characteristics, enabling symmetrical push-pull output stages in audio amplifiers and H-bridge drivers. Their complementary pairing is documented in the onsemi KSD882/D datasheet under "Features" and confirmed in ordering information tables.
What is the safe operating area (SOA) limitation for KSD882YSTSTU at 100°C case temperature?
At TC = 100°C, KSD882YSTSTU's SOA is limited to approximately 1.5 A DC at VCE = 10 V, per the "Safe Operating Areas" graph (Figure 6) in the onsemi KSD882/D datasheet. This reflects combined constraints of power dissipation (derated to ~6.5 W), secondary breakdown, and thermal stability. For reliable 2 A operation at elevated temperatures, forced-air cooling or larger heatsinks are required to maintain TC ≤ 75°C.
KSD882YSTSTU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-225AA, TO-126-3
- Packaging:
- Tube
- 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
KSD882YSTSTU FAQ
1.How can I place an order for KSD882YSTSTU through Aetrix?
Please submit a Request for Quotation (RFQ) for KSD882YSTSTU 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 KSD882YSTSTU reliable?
The price and inventory of KSD882YSTSTU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSD882YSTSTU is usually 5 days.
3.What payment methods are accepted for KSD882YSTSTU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSD882YSTSTU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSD882YSTSTU?
KSD882YSTSTU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSD882YSTSTU 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 KSD882YSTSTU?
For technical support, including KSD882YSTSTU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSD882YSTSTU requirements.
6.How does Aetrix verify that KSD882YSTSTU is sourced from the original manufacturer or authorized distributors?
All KSD882YSTSTU 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 KSD882YSTSTU meets industry standards.
7.What is the process for return or replacement of KSD882YSTSTU?
All KSD882YSTSTU units undergo pre-shipment inspection (PSI). If there is an issue with KSD882YSTSTU, 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 KSD882YSTSTU part is unused and in its original packaging.
Return procedure for KSD882YSTSTU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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