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onsemi KSP2907ACBU
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- Part No.:
- KSP2907ACBU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
KSP2907ACBU.pdf
- Description:
- TRANS PNP 60V 0.6A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,326
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Product details
Overview
KSP2907ACBU from ON Semiconductor is a PNP general-purpose amplifier in TO-92 package with center-collector pinout (Emitter–Collector–Base), rated for −60 V VCEO, −600 mA IC, and 625 mW power dissipation, commonly used in low-voltage switching and linear amplification circuits in consumer electronics and industrial control.
For engineers reviewing the KSP2907ACBU datasheet, pinout, applications, or equivalent options, key selection criteria include its center-collector TO-92 configuration, DC current gain range (hFE = 75–300), saturation voltage performance at high current, thermal resistance (RθJA = 200 °C/W), and compatibility with through-hole PCB assembly.
Technical Context
The KSP2907ACBU is a silicon PNP bipolar junction transistor optimized for general-purpose linear amplification and medium-speed switching. Its design supports operation up to 200 MHz fT with defined saturation behavior under pulsed conditions (pulse width ≤ 300 μs, duty cycle ≤ 2%).
It features fixed lead form (straight lead) and bulk packaging, with absolute maximum ratings including −60 V collector-emitter voltage, −600 mA collector current, and 150 °C junction temperature - all specified at TA = 25 °C unless otherwise noted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −60 V: Maximum allowable voltage between collector and emitter before breakdown; defines safe operating range in common-emitter configurations. |
| IC | −600 mA: Continuous DC collector current rating; sets upper limit for load-driving capability in switching or amplification stages. |
| hFE | 75–300: DC current gain across 0.1–150 mA IC; enables predictable base drive sizing for biasing and switching applications. |
| VCE(sat) | −0.4 V @ IC = −150 mA, IB = −15 mA: Low saturation voltage ensures minimal conduction loss in saturated switch mode. |
| fT | 200 MHz: Current gain bandwidth product; indicates usable frequency limit for small-signal amplification at IC = −50 mA. |
| RθJA | 200 °C/W: Junction-to-ambient thermal resistance on standard FR-4 PCB; determines required heatsinking for sustained power dissipation. |
Pinout & Package
Package: TO-92, 3-lead, molded plastic case with straight leads and bulk packing. Pin 1 = Emitter, Pin 2 = Collector (center), Pin 3 = Base - confirmed per Fairchild KSP2907A Rev. 2.4 datasheet Figure 5 and ordering note "Suffix '-C' means a Center Collector".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current exit terminal for PNP device | Connected to most positive rail in common-base or common-collector configurations; polarity-critical for correct biasing. |
| 2 (Collector) | Current entry terminal for PNP device | Center-pin placement simplifies PCB layout symmetry and reduces lead inductance in compact designs. |
| 3 (Base) | Control terminal for minority-carrier injection | Requires current-limited drive (e.g., via series resistor) to achieve target hFE-dependent collector current. |
Key Features
| Feature | Design Value |
|---|---|
| Center-collector TO-92 pinout | Enables consistent layout orientation and simplified routing in dual-transistor complementary pairs (e.g., with KSP2222A). |
| −60 V VCEO rating | Supports operation in 48 V and lower industrial bus systems without derating, unlike lower-voltage alternatives such as BC557. |
| 200 MHz fT | Permits use in audio preamplifiers and low-MHz digital signal conditioning where bandwidth exceeds typical general-purpose BJT limits. |
| −0.4 V VCE(sat) at 150 mA | Reduces power loss in saturated switching applications, improving efficiency over higher-Vsat devices like MPSA92. |
Applications
| Audio Signal Amplification | Low-Voltage Power Switching |
|---|---|
Use Scenario: Amplifying line-level analog signals in portable audio mixers and headphone drivers. IC Role / Device Role / Timing Role: PNP BJT configured in common-emitter or emitter-follower topology for voltage/current gain. Use Value: High hFE (up to 300) and low VCE(sat) enable clean, low-distortion amplification with minimal quiescent power draw. |
Use Scenario: Controlling 12 V solenoid loads in HVAC control panels using microcontroller GPIO outputs. IC Role / Device Role / Timing Role: Saturated switch interfacing logic-level signals to inductive loads. Use Value: −600 mA IC rating and −0.4 V VCE(sat) ensure reliable turn-on with minimal heat generation during continuous duty cycles. |
| Industrial Sensor Interface | Discrete Logic Level Translation |
Use Scenario: Converting 3.3 V open-collector sensor outputs to 5 V/12 V compatible levels in PLC input modules. IC Role / Device Role / Timing Role: Active pull-up stage in level-shifting circuitry. Use Value: −60 V VCEO and robust ESD tolerance allow safe operation across wide supply rails and noisy factory environments. |
Use Scenario: Inverting logic states between mixed-voltage subsystems (e.g., 3.3 V MCU to 5 V peripheral interface). IC Role / Device Role / Timing Role: Discrete inverter with defined propagation delay (tON = 45 ns, tOFF = 100 ns). Use Value: Predictable switching timing and tight hFE distribution support deterministic timing margins in synchronous digital interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP general-purpose amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC557B | Lower VCEO (−45 V), lower IC (−100 mA), TO-92 but standard pinout (E-B-C) | Suitable only for ≤30 V, low-current signal switching; not interchangeable due to pinout and voltage mismatch | Select when cost sensitivity outweighs voltage/headroom requirements and layout allows rework for E-B-C pin order. |
| MPSA92 | Higher VCEO (−300 V), same TO-92 package, but standard pinout (E-B-C) and higher VCE(sat) (−0.5 V min) | Better for high-voltage AC line sensing; less efficient in low-voltage switching due to higher saturation loss | Prefer for mains-referenced isolation stages; avoid where low VCE(sat) and center-collector layout are critical. |
Compared with BC557B and MPSA92, the KSP2907ACBU offers balanced voltage rating, current capability, and center-collector mechanical advantage - making it optimal for space-constrained, medium-voltage discrete amplifier and switch designs where pinout consistency matters.
Availability
KSP2907ACBU is available at Aetrix Electronics and suitable for audio signal amplification, low-voltage power switching, industrial sensor interface, and discrete logic level translation requiring stable component supply and long-term obsolescence management.
Supply support for KSP2907ACBU 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensors, and logic solutions for automotive, industrial, and consumer markets.
The KSP2907ACBU belongs to ON Semiconductor's legacy general-purpose bipolar transistor product line, originally developed by Fairchild for cost-sensitive, through-hole-based linear and switching applications in non-safety-critical electronics.
FAQ
What is the pin configuration of the KSP2907ACBU?
The KSP2907ACBU uses a center-collector TO-92 pinout: Pin 1 is Emitter, Pin 2 is Collector (center), and Pin 3 is Base. This differs from standard E-B-C ordering and is explicitly designated by the "-C" suffix in the part number. The physical orientation matches JEDEC TO-92 specifications with straight leads and bulk packaging.
Does the KSP2907ACBU support surface-mount assembly?
No, the KSP2907ACBU is supplied in TO-92 through-hole package with straight leads and bulk packing - it is not designed for surface-mount reflow or pick-and-place. For SMT equivalents, consider ON Semiconductor's NSS20201MR6T1G (SOT-23 PNP), though pinout and gain characteristics differ significantly.
What is the maximum operating temperature for the KSP2907ACBU?
The KSP2907ACBU has a maximum junction temperature (TJ) of 150 °C and storage temperature range of −55 to +150 °C. Its thermal resistance RθJA is 200 °C/W on a standard FR-4 PCB, meaning ambient temperature must be limited to ≤87.5 °C to sustain full 625 mW dissipation without exceeding TJ.
Can the KSP2907ACBU replace the KSP2907A in existing designs?
Yes, the KSP2907ACBU is functionally identical to the KSP2907A except for pinout: KSP2907A uses E-B-C, while KSP2907ACBU uses E-C-B. Direct replacement requires PCB layout revision to accommodate the center-collector arrangement; electrical parameters including VCEO, IC, and hFE remain unchanged.
Is the KSP2907ACBU suitable for automotive applications?
No - the KSP2907ACBU is a commercial-grade device not qualified to AEC-Q101 or automotive reliability standards. Its datasheet explicitly restricts use in automotive, aerospace, or safety-critical medical applications unless separately approved in writing by ON Semiconductor. Industrial and consumer designs are appropriate use cases.
KSP2907ACBU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 600 mA
- Voltage - Collector Emitter Breakdown (Max):
- 60 V
- Vce Saturation (Max) @ Ib, Ic:
- 1.6V @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 10nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 150mA, 10V
- Power - Max:
- 625 mW
- Frequency - Transition:
- 200MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
KSP2907ACBU FAQ
1.How can I place an order for KSP2907ACBU through Aetrix?
Please submit a Request for Quotation (RFQ) for KSP2907ACBU 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 KSP2907ACBU reliable?
The price and inventory of KSP2907ACBU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSP2907ACBU is usually 5 days.
3.What payment methods are accepted for KSP2907ACBU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSP2907ACBU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSP2907ACBU?
KSP2907ACBU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSP2907ACBU 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 KSP2907ACBU?
For technical support, including KSP2907ACBU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSP2907ACBU requirements.
6.How does Aetrix verify that KSP2907ACBU is sourced from the original manufacturer or authorized distributors?
All KSP2907ACBU 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 KSP2907ACBU meets industry standards.
7.What is the process for return or replacement of KSP2907ACBU?
All KSP2907ACBU units undergo pre-shipment inspection (PSI). If there is an issue with KSP2907ACBU, 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 KSP2907ACBU part is unused and in its original packaging.
Return procedure for KSP2907ACBU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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