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onsemi KSA1015GRTA-ON
- Part No.:
- KSA1015GRTA-ON
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
KSA1015GRTA-ON.pdf
- Description:
- TRANS PNP 50V 0.15A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:12,762
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Product details
Overview
KSA1015GRTA-ON from onsemi (formerly Fairchild Semiconductor) is a PNP epitaxial silicon transistor designed for low-frequency amplification and switching in general-purpose analog circuits, with confirmed VCBO = −50 V, IC = −150 mA, hFE = 200–400 (GR grade), and TO-92 3L package - used in audio preamplifier stages and discrete logic inverters.
For engineers reviewing the KSA1015GRTA-ON datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, guaranteed hFE classification (GR), saturation voltage under −100 mA load, thermal resistance (312 °C/W), and complementarity to KSC1815YTA-ON in push-pull configurations.
Technical Context
This device operates as a medium-current, low-speed PNP bipolar junction transistor with fixed emitter-base and collector-base breakdown limits (−5 V and −50 V respectively), optimized for linear amplification at frequencies up to 80 MHz (fT) and stable DC gain across −2 mA to −150 mA collector current range.
Its TO-92 3L package defines a standardized lead configuration (Emitter–Collector–Base, straight or bent leads), and its thermal design requires PCB land pattern compliance per FR-4 76 mm × 114 mm specification to maintain RθJA ≤ 312 °C/W at TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCBO | −50 V: Maximum reverse bias between collector and base before breakdown; sets safe operating voltage margin in common-emitter amplifier bias networks. |
| IC | −150 mA: Continuous collector current rating; supports drive capability for small-signal relay coils and LED drivers without forced cooling. |
| hFE (GR) | 200–400: Guaranteed DC current gain range at VCE = −6 V, IC = −2 mA; enables predictable biasing in Class-A amplifier designs. |
| VCE(sat) | −0.1 to −0.3 V at IC = −100 mA / IB = −10 mA: Low saturation voltage ensures minimal power loss in switching applications. |
| fT | 80 MHz: Current-gain bandwidth product; confirms suitability for audio-band amplification and sub-MHz oscillator circuits. |
| PD | 400 mW at TA = 25 °C: Total power dissipation limit; derates linearly by 3.2 mW/°C above ambient, defining thermal headroom on standard PCBs. |
Pinout & Package
Package: TO-92 3L molded plastic case with straight or bent leads; standardized mechanical outline per Fairchild Figure 7; JEDEC TO-92 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current sink terminal; connected to most positive rail in PNP common-emitter configurations; polarity-critical for correct biasing. |
| 2 | Collector | Current source terminal; tied to load and supply return path; voltage swing limited by VCEO = −50 V rating. |
| 3 | Base | Control input; requires negative base current (IB ≤ −50 mA max) to saturate; high-impedance node sensitive to noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Low-frequency amplifier optimization | Guaranteed fT ≥ 80 MHz and NF ≤ 6 dB at 100 Hz enable high-fidelity audio preamp use with minimal added noise. |
| GR-grade hFE binning | hFE = 200–400 at IC = −2 mA ensures consistent gain matching in dual-transistor circuits without manual sorting. |
| Complement to KSC1815 | Direct pairing with NPN KSC1815YTA-ON enables matched push-pull output stages with symmetrical VCEO, IC, and fT specs. |
| TO-92 mechanical standardization | JEDEC-compliant 3-lead through-hole footprint allows drop-in replacement in legacy designs and compatibility with automated insertion equipment. |
Applications
| Audio Preamp Stage | Discrete Logic Inverter |
|---|---|
Use Scenario: Amplifying microphone-level signals (≤10 mV) in battery-powered intercom systems before ADC sampling. IC Role / Device Role / Timing Role: PNP common-emitter small-signal amplifier providing 20–30 dB voltage gain with low distortion. Use Value: GR-grade hFE ensures stable bias point across temperature; VCE(sat) < −0.3 V minimizes quiescent power in always-on front-end stages. | Use Scenario: Implementing TTL-compatible level-shifting inverters in mixed-voltage control panels using +5 V and −12 V rails. IC Role / Device Role / Timing Role: Saturated-switch PNP inverter driving 74LS-series inputs with defined high/low thresholds. Use Value: Verified VBE(sat) = −1.1 V and fast turn-off (Cob = 4–7 pF) support clean digital transitions up to 100 kHz. |
| LED Driver (Low-Side Switch) | Relay Driver Interface |
Use Scenario: Driving 20 mA indicator LEDs from microcontroller GPIO pins with inverted logic (active-low enable). IC Role / Device Role / Timing Role: Low-power saturated switch controlling LED anode connection to positive supply. Use Value: IC = −150 mA rating exceeds typical LED loads; VCE(sat) ≤ −0.3 V keeps LED forward voltage drop predictable and efficient. | Use Scenario: Isolating and amplifying MCU output signals to energize 12 V/40 mA electromagnetic relay coils in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Medium-current PNP interface transistor providing coil current gain and voltage level translation. Use Value: Confirmed BVEBO = −5 V prevents base-emitter breakdown during relay coil flyback transients; PD = 400 mW sustains intermittent duty-cycle operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPSA10G-TP | Same TO-92 package; hFE = 100–300 (no GR bin); VCBO = −60 V; fT = 50 MHz. | Higher breakdown margin but lower gain consistency and bandwidth; less suitable for precision gain-stable preamps. | Select when higher VCBO is critical and hFE variation acceptable. |
| KSA992F-RTK/P | TO-92; hFE = 200–400 (same GR bin); VCBO = −30 V; IC = −100 mA; fT = 100 MHz. | Lower voltage rating limits use in >30 V supply rails; higher fT supports wider bandwidth but reduced current drive. | Select when bandwidth >80 MHz required and supply voltage ≤30 V. |
Compared with MPSA10G-TP and KSA992F-RTK/P, KSA1015GRTA-ON uniquely balances GR-grade gain consistency, −50 V breakdown, and −150 mA current handling in a single TO-92 device - making it optimal for cost-sensitive, medium-voltage analog interfaces where gain stability and saturation performance are prioritized.
Availability
KSA1015GRTA-ON is available at Aetrix Electronics and suitable for audio signal conditioning, discrete logic interfacing, and low-power relay/LED driver circuits requiring stable component supply across industrial control, consumer electronics, and embedded instrumentation programs.
Supply support for KSA1015GRTA-ON 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 Fairchild Semiconductor) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The KSA1015GRTA-ON belongs to onsemi's legacy general-purpose bipolar transistor product line, engineered for reliability and consistency in analog signal processing, discrete logic, and interface circuitry where cost, manufacturability, and proven performance are essential.
FAQ
What is the pin configuration of KSA1015GRTA-ON?
KSA1015GRTA-ON uses a TO-92 3L package with pin 1 = Emitter, pin 2 = Collector, pin 3 = Base - confirmed in Fairchild's Rev. 1.9 datasheet Figure 1 and physical dimensions drawing. Straight or bent lead variants maintain identical terminal assignment, and this layout is mandatory for correct PNP biasing in common-emitter or common-base topologies.
Is KSA1015GRTA-ON RoHS compliant?
Yes, KSA1015GRTA-ON is RoHS compliant and Pb-free, as documented in onsemi's official product change notices and packaging specifications for the "GRTA" suffix. The device meets EU Directive 2011/65/EU requirements, with homogeneous material analysis confirming lead content below 0.1 wt% in all solderable terminations and mold compound.
What does the "GR" in KSA1015GRTA-ON signify?
The "GR" suffix in KSA1015GRTA-ON denotes the hFE gain bin: 200–400 at VCE = −6 V and IC = −2 mA. This grading ensures tighter DC current gain distribution than standard "O" (70–140) or "Y" (120–240) bins, enabling predictable biasing in production-amplifier designs without post-manufacture gain sorting.
Can KSA1015GRTA-ON replace KSA1015YTA-ON in a design?
Yes, KSA1015GRTA-ON can replace KSA1015YTA-ON where higher hFE consistency is needed, since both share identical package (TO-92), absolute maximum ratings, and electrical test conditions. The only functional difference is the hFE range: YTA = 120–240 vs. GRTA = 200–400 - no layout or schematic changes are required for substitution.
What is the maximum safe operating temperature for KSA1015GRTA-ON?
KSA1015GRTA-ON has a maximum junction temperature (TJ) of 150 °C and storage temperature range of −55 to 150 °C. To maintain reliability, continuous operation should keep TJ ≤ 130 °C under worst-case ambient and power dissipation; this requires verifying PCB thermal relief and ensuring PD ≤ 400 mW at TA = 25 °C with 3.2 mW/°C derating applied above that point.
KSA1015GRTA-ON Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Bulk
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 150 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 10mA, 100mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 6V
- Power - Max:
- 400 mW
- Frequency - Transition:
- 80MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
KSA1015GRTA-ON FAQ
1.How can I place an order for KSA1015GRTA-ON through Aetrix?
Please submit a Request for Quotation (RFQ) for KSA1015GRTA-ON 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 KSA1015GRTA-ON reliable?
The price and inventory of KSA1015GRTA-ON are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSA1015GRTA-ON is usually 5 days.
3.What payment methods are accepted for KSA1015GRTA-ON?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSA1015GRTA-ON transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSA1015GRTA-ON?
KSA1015GRTA-ON orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSA1015GRTA-ON 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 KSA1015GRTA-ON?
For technical support, including KSA1015GRTA-ON datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSA1015GRTA-ON requirements.
6.How does Aetrix verify that KSA1015GRTA-ON is sourced from the original manufacturer or authorized distributors?
All KSA1015GRTA-ON 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 KSA1015GRTA-ON meets industry standards.
7.What is the process for return or replacement of KSA1015GRTA-ON?
All KSA1015GRTA-ON units undergo pre-shipment inspection (PSI). If there is an issue with KSA1015GRTA-ON, 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 KSA1015GRTA-ON part is unused and in its original packaging.
Return procedure for KSA1015GRTA-ON:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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