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onsemi KSA916OBU
- Part No.:
- KSA916OBU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 Long Body
- Datasheet:
-
KSA916OBU.pdf
- Description:
- TRANS PNP 120V 0.8A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,199
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Product details
Overview
KSA916OBU from onsemi is a PNP epitaxial silicon transistor designed for audio power amplification and driver-stage signal amplification in discrete analog circuits, with −120 V collector–base/collector–emitter breakdown voltage, −800 mA continuous collector current, 120 MHz current gain bandwidth product, and TO-92 3-lead (Case 135AM) package.
For engineers reviewing the KSA916OBU datasheet, pinout, applications, or equivalent options, key selection considerations include its PNP polarity, high-voltage safe operating area, DC current gain classification (hFE2 = 80–160), thermal resistance (RθJA = 130 °C/W), and complementary pairing with KSC2316 in push-pull output stages.
Technical Context
This device operates as a medium-power, high-voltage PNP bipolar junction transistor optimized for linear amplification rather than switching. Its design supports stable DC biasing at VCE = −5 V with hFE2 ranging 80–160 at IC = −100 mA, and delivers low saturation voltage (VCE(sat) ≤ −1 V at IC = −500 mA / IB = −50 mA).
The KSA916OBU exhibits fT = 120 MHz under VCE = −5 V / IC = −100 mA conditions and Cob = 40 pF at VCB = −10 V, enabling use in wideband audio driver and pre-driver applications where gain-bandwidth trade-offs and output capacitance affect stability and slew rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCBO | −120 V - Withstands reverse collector–base voltage up to 120 V without breakdown, enabling high-voltage rail operation in amplifier output stages. |
| IC | −800 mA - Supports peak collector current up to 800 mA, suitable for Class-A/B audio output drivers delivering >1 W into 8 Ω loads. |
| fT | 120 MHz - Enables stable small-signal amplification up to mid-VHF range, critical for wideband audio preamplifier and RF driver stages. |
| hFE2 | 80–160 - DC current gain at IC = −100 mA ensures predictable bias point setting and gain consistency across production lots. |
| RθJA | 130 °C/W - Limits junction temperature rise to ≤130 °C per watt dissipated in standard FR-4 PCB layout, defining thermal derating above 25 °C ambient. |
| VCE(sat) | ≤ −1 V - Low saturation voltage minimizes power loss and heat generation during conduction, improving efficiency in linear output stages. |
Pinout & Package
Package: TO-92 3-lead, Case 135AM (lead-formed, 8.0 × 4.9 mm footprint), Pb-free, rated for TJ = 150 °C maximum junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current exit terminal; connects to most positive supply node in PNP common-emitter configurations. |
| 2 | Collector | Current entry terminal; typically tied to load or next stage input, requiring proper heatsinking at high IC. |
| 3 | Base | Control terminal; requires current-limited drive (e.g., via base resistor) to achieve target hFE-regulated collector current. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary Pairing | Explicitly designed as PNP complement to NPN KSC2316, enabling matched push-pull output stages with symmetrical VCEO, IC, and fT performance. |
| High-Voltage Breakdown | VCBO = VCEO = −120 V allows direct use in ±60 V supply rails without additional clamping or derating. |
| Thermal Robustness | Rated TJ = 150 °C and RθJC = 41 °C/W support reliable operation in enclosed audio enclosures with limited airflow. |
| Audio-Optimized Gain Bandwidth | fT = 120 MHz ensures flat frequency response beyond 20 kHz with minimal phase shift in feedback-coupled amplifier designs. |
Applications
| Audio Power Amplifier Output Stage | Discrete Driver Stage for MOSFET Gate Control |
|---|---|
Use Scenario: Final amplification stage in Class-AB hi-fi amplifier delivering 1–2 W into 8 Ω speaker loads with low THD. IC Role / Device Role / Timing Role: PNP output transistor in complementary pair with KSC2316, conducting during negative half-cycle of audio waveform. Use Value: −120 V VCEO and −800 mA IC enable full swing into reactive speaker loads without clipping or secondary breakdown. | Use Scenario: Driving gate of high-side N-channel MOSFET in discrete DC-DC converter or motor control H-bridge. IC Role / Device Role / Timing Role: Level-shifting, current-amplified gate driver providing fast turn-on/turn-off for power switch. Use Value: 120 MHz fT and low VCE(sat) ensure rapid gate charging/discharging with minimal driver loss and propagation delay. |
| Linear Voltage Regulator Pass Element | Discrete Signal Inverter / Phase Splitter |
Use Scenario: Series pass transistor in adjustable linear regulator supplying stable 5–15 V at up to 500 mA for analog sensor front-ends. IC Role / Device Role / Timing Role: Current-controlled series element regulating output voltage via base-emitter bias network. Use Value: hFE2 = 80–160 enables precise current mirror-based feedback control with low dropout and thermal stability. | Use Scenario: Single-transistor inverter feeding differential inputs to op-amp or comparator in instrumentation signal conditioning. IC Role / Device Role / Timing Role: Inverting amplifier with fixed gain set by emitter resistor and collector load, preserving signal integrity at audio frequencies. Use Value: 40 pF Cob and 120 MHz fT maintain phase accuracy and bandwidth up to 100 kHz without peaking or roll-off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP bipolar transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPSA92 | VCEO = −300 V, IC = −500 mA, fT = 50 MHz - higher voltage rating but lower current and bandwidth. | Suitable for high-voltage switching (e.g., flyback snubbers) but not audio power amplification due to reduced fT and gain linearity. | Select when absolute breakdown margin >200 V is required and bandwidth <50 kHz suffices. |
| KSA733 | VCEO = −60 V, IC = −150 mA, fT = 180 MHz - lower voltage/current, higher fT, same TO-92 package. | Better suited for RF preamplifiers or low-power signal inversion, not capable of driving 8 Ω speakers or high-current loads. | Choose for compact, high-frequency small-signal gain where voltage stress remains below 60 V. |
Compared with MPSA92 and KSA733, the KSA916OBU uniquely balances −120 V breakdown, −800 mA current, and 120 MHz bandwidth in TO-92 - making it optimal for medium-power audio driver and linear regulator applications where all three parameters are simultaneously critical.
Availability
KSA916OBU is available at Aetrix Electronics and suitable for audio power amplifiers, discrete driver stages, and linear voltage regulators requiring stable component supply with consistent hFE binning and Pb-free compliance.
Supply support for KSA916OBU 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 connectivity solutions for automotive, industrial, cloud, and consumer markets.
The KSA916OBU belongs to onsemi's legacy discrete bipolar transistor family, engineered specifically for high-fidelity audio amplification and robust linear power control in cost-sensitive, thermally constrained applications.
FAQ
What is the hFE classification for KSA916OBU?
The "O" suffix in KSA916OBU denotes hFE2 classification of 80–160 at VCE = −5 V and IC = −100 mA, as specified in the onsemi datasheet revision 4. This binning ensures predictable DC biasing in amplifier designs and distinguishes KSA916OBU from the Y-class variant (120–240). The KSA916OBU maintains consistent gain behavior across its operational current range.
Is KSA916OBU pin-compatible with KSC2316?
No - KSA916OBU (PNP) and KSC2316 (NPN) are complementary devices, not pin-compatible. Their pinouts differ: KSA916OBU uses E-C-B (pin 1–2–3), while KSC2316 uses E-B-C. They are intended for symmetric placement in push-pull circuits, not direct substitution. Always verify layout alignment before using both in the same design.
What is the maximum power dissipation for KSA916OBU at 75°C ambient?
At TA = 75 °C, KSA916OBU's power dissipation must be derated from 900 mW (at 25 °C) by 7.2 mW/°C, resulting in PD = 900 mW − (75 − 25) × 7.2 mW = 540 mW. Exceeding this risks junction temperature exceeding 150 °C. For sustained operation, heatsinking or forced airflow is recommended above 300 mW.
Does KSA916OBU support surface-mount assembly?
No - KSA916OBU is packaged exclusively in through-hole TO-92 3-lead (Case 135AM) format and is not offered in SMT variants. Its lead-formed configuration requires wave or hand soldering into plated-through holes. Reflow profiles are not applicable, and thermal stress from SMT reflow may damage the die or bond wires.
What is the safe operating area (SOA) limitation for KSA916OBU at DC?
The KSA916OBU SOA curve (Figure 5, datasheet) defines DC limits as VCE ≤ −120 V and IC ≤ −800 mA, with second breakdown boundary beginning near VCE = −60 V / IC = −400 mA. Operation beyond this region risks localized thermal runaway. Derating is mandatory for reliability - e.g., at VCE = −40 V, max IC ≈ −600 mA for DC use.
KSA916OBU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Long Body
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 800 mA
- Voltage - Collector Emitter Breakdown (Max):
- 120 V
- Vce Saturation (Max) @ Ib, Ic:
- 1V @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 100mA, 5V
- Power - Max:
- 900 mW
- Frequency - Transition:
- 120MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
KSA916OBU FAQ
1.How can I place an order for KSA916OBU through Aetrix?
Please submit a Request for Quotation (RFQ) for KSA916OBU 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 KSA916OBU reliable?
The price and inventory of KSA916OBU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSA916OBU is usually 5 days.
3.What payment methods are accepted for KSA916OBU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSA916OBU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSA916OBU?
KSA916OBU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSA916OBU 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 KSA916OBU?
For technical support, including KSA916OBU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSA916OBU requirements.
6.How does Aetrix verify that KSA916OBU is sourced from the original manufacturer or authorized distributors?
All KSA916OBU 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 KSA916OBU meets industry standards.
7.What is the process for return or replacement of KSA916OBU?
All KSA916OBU units undergo pre-shipment inspection (PSI). If there is an issue with KSA916OBU, 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 KSA916OBU part is unused and in its original packaging.
Return procedure for KSA916OBU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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