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onsemi 2SA1020RLRAG
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- Part No.:
- 2SA1020RLRAG
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Datasheet:
-
2SA1020RLRAG.pdf
- Description:
- TRANS PNP 50V 2A TO92
- Quantity:
- Payment:
- Shipping:
Inventory:8,297
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Product details
Overview
2SA1020RLRAG from onsemi is a Pb-free, through-hole PNP bipolar junction transistor in TO-92 package, rated for 50 V VCEO, 2.0 A continuous collector current, and 1.5 W power dissipation at TC = 25°C. It delivers DC current gain (hFE) of 70–240 at IC = 500 mA, supports switching and linear amplification in low-voltage power control circuits, and is commonly used in relay drivers and LED load switches.
For engineers reviewing the 2SA1020RLRAG datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, TO-92 mechanical compatibility, guaranteed hFE range at 500 mA, VCE(sat) ≤ 0.5 V at IC/IB = 10, and thermal resistance RJC = 83.3°C/W for heatsink-coupled designs.
Technical Context
The 2SA1020RLRAG operates as a medium-power PNP switch with defined saturation behavior: VCE(sat) ≤ 0.5 V at IC = 1.0 A and IB = 50 mA, and VBE(sat) ≤ 1.2 V under same conditions. Its fT = 100 MHz enables stable operation in audio-frequency switching and low-speed digital interface applications.
It features a maximum junction temperature of +150°C, thermal resistance RJA = 125°C/W (free-air), and safe operating area (SOA) limited by second breakdown at high voltage/current combinations. The device is not intended for RF amplification or Class 3 medical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum allowable collector-emitter voltage before breakdown; defines safe DC blocking capability in PNP switch configurations. |
| IC (cont.) | 2.0 A - Continuous collector current rating; determines maximum steady-state load drive capacity without derating. |
| PD @ TC = 25°C | 1.5 W - Power dissipation limit with case temperature maintained at 25°C; requires heatsinking above ambient for full-load operation. |
| hFE | 70–240 - DC current gain range at IC = 500 mA and VCE = 2.0 V; sets base drive requirements for reliable saturation. |
| fT | 100 MHz - Current-gain bandwidth product; confirms suitability for audio-range switching and low-frequency signal amplification. |
| RJC | 83.3°C/W - Junction-to-case thermal resistance; enables calculation of required heatsink thermal impedance for target TJ. |
Pinout & Package
2SA1020RLRAG uses the TO-92 (Case 29−10, Style 14) package - a 3-lead, epoxy-molded, through-hole plastic package with standardized lead spacing and mounting footprint. Lead bending options include straight, bent, ammo pack, and tape-and-reel (2000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current exit terminal for PNP operation; connects to higher-potential rail in common-emitter switch topologies. |
| 2 | Collector | Current entry terminal; typically tied to load and ground-return path in low-side switching configurations. |
| 3 | Base | Control input; requires current-limited drive (e.g., via series resistor) to achieve specified IB = 50 mA for full saturation. |
Key Features
| Feature | Design Value |
|---|---|
| Pb-free TO-92 package | Complies with RoHS Directive 2011/65/EU; eliminates lead-based soldering restrictions and supports environmentally compliant assembly. |
| High hFE at 500 mA | Minimum hFE = 70 ensures low base drive current requirement (≤7.1 mA typical) for 500 mA collector load, reducing MCU GPIO burden. |
| Low VCE(sat) | VCE(sat) ≤ 0.5 V at IC/IB = 10 minimizes conduction loss and self-heating in power-switching applications. |
| 150°C max junction temperature | Enables operation in industrial environments with elevated ambient temperatures when combined with appropriate thermal management. |
Applications
| Relay Driver Circuit | LED Constant-Current Switch |
|---|---|
|
Use Scenario: Driving 12 V, 100 mA electromagnetic relay coil from microcontroller GPIO. IC Role / Device Role / Timing Role: PNP switch controlling coil current path between supply rail and MCU-controlled base node. Use Value: Guaranteed hFE ≥ 70 at 500 mA allows robust saturation with <1 mA base drive, minimizing GPIO loading and enabling direct MCU interface. |
Use Scenario: Switching 350 mA white LED string powered from 5 V rail in portable instrumentation backlight. IC Role / Device Role / Timing Role: Low-saturation PNP current switch placed in high-side configuration to regulate LED current. Use Value: VCE(sat) ≤ 0.5 V limits power loss to <175 mW at full load, reducing thermal stress and improving efficiency over alternatives with >0.8 V drop. |
| DC Motor Direction Control | Linear Voltage Regulator Pass Element |
|
Use Scenario: Half-bridge PNP/NPN pair controlling bidirectional 24 V, 800 mA brushed DC motor in HVAC damper actuator. IC Role / Device Role / Timing Role: High-side PNP switch providing forward motor current path in H-bridge topology. Use Value: 2.0 A IC rating and 1.5 W PD support short-duration stall currents up to 1.6 A without thermal shutdown in intermittent duty cycles. |
Use Scenario: Pass transistor in adjustable 3–12 V, 1.2 A linear regulator using LM317 feedback network. IC Role / Device Role / Timing Role: Series pass element dissipating excess input-output voltage difference as heat. Use Value: RJC = 83.3°C/W enables predictable junction temperature rise (ΔTJ ≈ 100°C at 1.2 A × 3 V drop), supporting heatsink sizing per application thermal budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 2SA1015GR | Lower VCEO = 50 V (same), but hFE min = 70 only at IC = 10 mA; hFE drops to ~30 at 1.0 A - insufficient for high-current saturation. | Best suited for small-signal amplification or low-current switching (<200 mA); not recommended for 1 A+ loads. | Select 2SA1015GR only if base drive is unconstrained and load current remains below 300 mA. |
| MJD2955G | TO-220 package, higher PD = 115 W, VCEO = 60 V, but hFE min = 20 at IC = 4 A - lower gain requires larger base drive. | Designed for high-power linear regulation and motor control; incompatible with TO-92 PCB footprints. | Choose MJD2955G only when board layout permits TO-220 mounting and thermal design supports >100 W dissipation. |
Compared with 2SA1020RLRAG, 2SA1015GR offers identical voltage rating but lacks guaranteed high-current gain, while MJD2955G provides superior power handling at the cost of footprint compatibility and increased base drive demand - making 2SA1020RLRAG optimal for compact, medium-current PNP switching where TO-92 fit and hFE stability at 500 mA are critical.
Availability
2SA1020RLRAG is available at Aetrix Electronics and suitable for relay drivers, LED load switches, DC motor controls, and linear regulator pass elements requiring stable component supply, RoHS-compliant packaging, and proven performance in industrial temperature ranges.
Supply support for 2SA1020RLRAG 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 innovation, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The 2SA1020RLRAG belongs to onsemi's general-purpose bipolar transistor product line, engineered for cost-sensitive, medium-power analog and switching applications where reliability, thermal performance, and Pb-free compliance are essential.
FAQ
What is the maximum continuous collector current rating for the 2SA1020RLRAG?
The 2SA1020RLRAG is rated for 2.0 A continuous collector current (IC) at TC = 25°C. This rating assumes proper heatsinking; derating applies above 25°C at 12 mW/°C. At ambient conditions without heatsink, the usable current is limited by RJA = 125°C/W and maximum junction temperature of +150°C.
Does the 2SA1020RLRAG have a guaranteed DC current gain at high collector current?
Yes - the 2SA1020RLRAG guarantees hFE ≥ 40 at IC = 1.5 A and VCE = 2.0 V, and ≥70 at IC = 500 mA. This ensures predictable base drive requirements across its operational range, unlike many general-purpose transistors that only specify hFE at low currents.
What is the saturation voltage of the 2SA1020RLRAG under typical switching conditions?
The 2SA1020RLRAG has a maximum VCE(sat) of 0.5 V when IC = 1.0 A and IB = 50 mA (IC/IB = 10). This low saturation voltage reduces conduction losses and improves efficiency in power-switching applications such as relay and LED drivers.
Is the 2SA1020RLRAG compatible with lead-free reflow soldering processes?
Yes - the 2SA1020RLRAG is a Pb-free device in a TO-92 package and qualified for lead-free soldering per J-STD-020. Its maximum peak reflow temperature is 260°C, and it complies with IPC/JEDEC J-STD-020 moisture sensitivity level (MSL) 1, requiring no dry-pack handling.
Can the 2SA1020RLRAG be used in linear regulator applications?
Yes - the 2SA1020RLRAG is suitable as a pass transistor in adjustable linear regulators. With RJC = 83.3°C/W and PD = 1.5 W at TC = 25°C, it supports up to ~1.2 A output current at 3 V dropout while maintaining TJ < 150°C with appropriate heatsinking.
2SA1020RLRAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 50mA, 1A
- Current - Collector Cutoff (Max):
- 1µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 70 @ 500mA, 2V
- Power - Max:
- 900 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92 (TO-226)
2SA1020RLRAG FAQ
1.How can I place an order for 2SA1020RLRAG through Aetrix?
Please submit a Request for Quotation (RFQ) for 2SA1020RLRAG 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 2SA1020RLRAG reliable?
The price and inventory of 2SA1020RLRAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SA1020RLRAG is usually 5 days.
3.What payment methods are accepted for 2SA1020RLRAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SA1020RLRAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2SA1020RLRAG?
2SA1020RLRAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2SA1020RLRAG 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 2SA1020RLRAG?
For technical support, including 2SA1020RLRAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SA1020RLRAG requirements.
6.How does Aetrix verify that 2SA1020RLRAG is sourced from the original manufacturer or authorized distributors?
All 2SA1020RLRAG 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 2SA1020RLRAG meets industry standards.
7.What is the process for return or replacement of 2SA1020RLRAG?
All 2SA1020RLRAG units undergo pre-shipment inspection (PSI). If there is an issue with 2SA1020RLRAG, 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 2SA1020RLRAG part is unused and in its original packaging.
Return procedure for 2SA1020RLRAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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