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onsemi 2N5684
- Part No.:
- 2N5684
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-204AE
- Datasheet:
-
2N5684.pdf
- Description:
- TRANS PNP 80V 50A TO204
- Quantity:
- Payment:
- Shipping:
Inventory:6,368
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Product details
Overview
2N5684 from ON Semiconductor is a PNP high-current silicon power transistor designed for high-power amplifier and switching circuit applications. It delivers 50 A continuous collector current, supports 80 V collector-emitter voltage, exhibits DC current gain (hFE) of 15–60 at 25 A, achieves VCE(sat) ≤ 1.0 V at 25 A, and operates across –65°C to +200°C junction temperature range.
For engineers reviewing the 2N5684 datasheet, pinout, applications, or equivalent options, key selection considerations include its TO-204AE (Case 197A–05) package, thermal resistance θJC = 0.584°C/W, safe operating area limitations, complementary pairing with 2N5686, and suitability for high-current linear and switching designs requiring robust thermal performance.
Technical Context
The 2N5684 is a PNP bipolar junction transistor optimized for high-power linear amplification and hard-switching duty. Its design emphasizes low saturation voltage under heavy conduction (VCE(sat) ≤ 1.0 V @ IC = 25 A, IB = 2.5 A), stable DC current gain across wide current range (hFE = 15–60), and rugged second-breakdown-limited SOA up to 200°C junction temperature.
It features a metal-can TO-204AE package with collector-connected case, base and emitter leads isolated from case, and thermal performance validated per JEDEC standards. The device's Cob = 2000 pF @ VCB = 10 V and fT = 2.0 MHz define its high-frequency switching envelope and capacitive loading behavior in driver stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 Vdc - Maximum collector-emitter voltage before breakdown under open-base conditions; defines maximum supply rail compatibility. |
| IC Continuous | 50 Adc - Sustained collector current capability; enables high-power output stage designs without forced cooling. |
| VCE(sat) Max | 1.0 Vdc @ IC = 25 Adc, IB = 2.5 Adc - Low on-state loss ensures <25 W conduction loss at rated current, critical for efficiency in Class AB amplifiers. |
| hFE Range | 15–60 @ IC = 25 Adc, VCE = 2.0 Vdc - Moderate, predictable current gain supports stable bias networks in high-current output stages. |
| PD @ TC = 25°C | 300 Watts - Total power dissipation limit at case temperature 25°C; derates linearly at 1.715 W/°C above 25°C. |
| θJC | 0.584°C/W - Junction-to-case thermal resistance; determines minimum heatsink requirement for given TJ max and power dissipation. |
| TJ Range | –65°C to +200°C - Wide operating junction temperature range supports industrial, automotive, and military-grade thermal environments. |
Pinout & Package
2N5684 uses the TO-204AE (Case 197A–05) metal-can package with collector connected to the case. Pin 1 is Base, Pin 2 is Emitter; the case serves as the Collector terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Base | Control input for bipolar conduction; requires ≥2.5 A drive current to saturate at 25 A collector load. |
| Pin 2 | Emitter | Current return path; referenced to system ground or negative rail in PNP configurations; carries full load current. |
| Case | Collector | High-current output terminal; electrically tied to collector; must be mounted to heatsink with electrical isolation if not referenced to system ground. |
Key Features
| Feature | Design Value |
|---|---|
| High-current capability | 50 A continuous collector current enables use in >1 kW audio amplifiers and industrial motor control outputs. |
| Low VCE(sat) | ≤1.0 V at 25 A reduces conduction losses by >30% vs. legacy power transistors, improving thermal margin in compact enclosures. |
| Rugged SOA | Second-breakdown-limited safe operating area up to 200°C allows reliable pulsed operation in switching regulators and protection circuits. |
| JEDEC-registered specs | Complies with JEDEC JESD22-A108 and JESD22-A103 standards for reliability and test methodology traceability. |
| Thermal robustness | 0.584°C/W θJC enables direct mounting to aluminum heatsinks without thermal interface material degradation concerns at 300 W dissipation. |
Applications
| High-Power Audio Amplifier | Industrial DC Motor Drive |
|---|---|
Use Scenario: Output stage of 500–1000 W Class AB or Class G audio amplifiers driving low-impedance speaker loads. IC Role / Device Role / Timing Role: PNP output transistor in complementary push-pull pair with 2N5686; handles negative half-cycle conduction. Use Value: Low VCE(sat) minimizes heat generation during high-current peaks, preserving dynamic headroom and reducing heatsink mass. | Use Scenario: H-bridge or half-bridge switching stage controlling 48–100 V DC motors in CNC machines and automated conveyors. IC Role / Device Role / Timing Role: High-side PNP switch in discrete gate driver stage; commutates motor current during PWM transitions. Use Value: 200°C TJ rating and rugged SOA withstand repetitive inductive kickback without secondary breakdown failure. |
| Uninterruptible Power Supply (UPS) | Welding Power Supply |
Use Scenario: Inverter output stage converting 350 V DC bus to 120/230 V AC for critical backup power delivery. IC Role / Device Role / Timing Role: PNP switching element in full-bridge topology; conducts during negative AC half-cycles with fast turn-on (tr ≤ 20 ns). Use Value: 2.0 MHz fT and low Cob support clean square-wave switching up to 20 kHz, minimizing harmonic distortion and EMI. | Use Scenario: Primary-side power switch in resonant or hard-switched arc welding inverters delivering 200–500 A output current. IC Role / Device Role / Timing Role: Main PNP switch in chopper or inverter stage; handles high peak currents and thermal cycling during arc ignition and maintenance. Use Value: 300 W PD rating and –65°C to +200°C operating range ensure reliability under extreme thermal shock and ambient temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJ15024 | Higher VCEO (120 V), lower hFE (10–30), same TO-3 package but higher θJC (0.8°C/W). | Better suited for higher-voltage DC-DC converters; less efficient at 25–50 A due to higher VCE(sat) and thermal resistance. | Select MJ15024 only when >100 V blocking is required; otherwise 2N5684 offers superior thermal and conduction performance at 80 V. |
| BD249C | Lower IC (15 A), lower VCEO (80 V), TO-126 package, hFE = 40–250, much lower PD (12.5 W). | Only suitable for signal-level or low-power driver stages-not a functional replacement for 2N5684's 50 A/300 W role. | BD249C is not a drop-in alternative; it serves entirely different power tiers-use only in pre-driver or bias networks upstream of 2N5684. |
Compared with MJ15024 and BD249C, the 2N5684 uniquely balances 50 A current handling, 80 V blocking, 1.0 V saturation, and 0.584°C/W thermal resistance in a single TO-204AE package-making it irreplaceable for high-efficiency, high-reliability 300 W switching and linear output stages.
Availability
2N5684 is available at Aetrix Electronics and suitable for high-power audio amplifiers, industrial motor drives, uninterruptible power supplies, and welding equipment requiring stable component supply and long-term manufacturing continuity.
Supply support for 2N5684 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 (now part of onsemi) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 2N5684 belongs to ON Semiconductor's legacy high-current bipolar power transistor family, engineered specifically for rugged, high-fidelity audio output stages and industrial switching applications demanding proven reliability and JEDEC-standardized performance.
FAQ
What is the maximum continuous collector current rating for the 2N5684?
The 2N5684 is rated for 50 A continuous collector current (IC) at case temperature TC = 25°C. This rating assumes adequate heatsinking and derates linearly at 1.715 W/°C above 25°C. At elevated case temperatures, the usable current must be reduced to maintain junction temperature ≤200°C, as defined in the Safe Operating Area curves of the official 2N5684 datasheet.
Is the 2N5684 pin-compatible with the 2N5686?
No-the 2N5684 (PNP) and 2N5686 (NPN) are complementary devices sharing identical TO-204AE packaging and pinout (Pin 1 = Base, Pin 2 = Emitter, Case = Collector), but they are not pin-compatible replacements for each other due to opposite polarity. They are intended for use together in push-pull or bridge configurations, not as direct substitutes.
What is the thermal resistance junction-to-case (θJC) for the 2N5684?
The 2N5684 has a maximum thermal resistance of θJC = 0.584°C/W, measured from junction to case under JEDEC-standard conditions. This value is critical for calculating required heatsink thermal resistance to maintain TJ ≤ 200°C under specified power dissipation and ambient conditions.
Does the 2N5684 support high-frequency switching applications?
The 2N5684 has an fT of 2.0 MHz and turn-on time tr ≤ 20 ns, supporting switching up to ~100–200 kHz in hard-switched topologies. However, its Cob = 2000 pF limits high-frequency efficiency-designers should verify switching losses and SOA compliance at target frequency and load using the 2N5684 safe operating area curves and transient thermal response data.
What is the safe operating area (SOA) limitation for the 2N5684 at 100 V VCE?
At VCE = 100 V, the 2N5684's SOA is limited by second breakdown-not thermal constraints-per Figure 5 of the datasheet. For DC operation, the maximum allowable IC drops to approximately 0.5 A at 100 V; for pulsed operation (e.g., 1 ms pulse, 10% duty cycle), IC may reach ~5 A. Always consult the published SOA curves in the 2N5684 datasheet for exact boundaries.
2N5684 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-204AE
- Packaging:
- Tray
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 50 A
- Voltage - Collector Emitter Breakdown (Max):
- 80 V
- Vce Saturation (Max) @ Ib, Ic:
- 5V @ 10A, 50A
- Current - Collector Cutoff (Max):
- 1mA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 15 @ 25A, 2V
- Power - Max:
- 300 mW
- Frequency - Transition:
- 2MHz
- Operating Temperature:
- -65°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-204 (TO-3)
2N5684 FAQ
1.How can I place an order for 2N5684 through Aetrix?
Please submit a Request for Quotation (RFQ) for 2N5684 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 2N5684 reliable?
The price and inventory of 2N5684 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N5684 is usually 5 days.
3.What payment methods are accepted for 2N5684?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N5684 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2N5684?
2N5684 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2N5684 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 2N5684?
For technical support, including 2N5684 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N5684 requirements.
6.How does Aetrix verify that 2N5684 is sourced from the original manufacturer or authorized distributors?
All 2N5684 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 2N5684 meets industry standards.
7.What is the process for return or replacement of 2N5684?
All 2N5684 units undergo pre-shipment inspection (PSI). If there is an issue with 2N5684, 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 2N5684 part is unused and in its original packaging.
Return procedure for 2N5684:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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