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onsemi FJL4215OTU
- Part No.:
- FJL4215OTU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-264-3, TO-264AA
- Datasheet:
-
FJL4215OTU.pdf
- Description:
- TRANS PNP 250V 17A TO-264-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,816
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Product details
Overview
FJL4215OTU from onsemi is a PNP epitaxial silicon power transistor in TO-264-3LD package, rated for −250 V VCEO, −17 A IC, 150 W power dissipation, and 30 MHz fT, designed for high-fidelity audio output amplifier stages requiring high-voltage swing and low-THD linearity.
For engineers reviewing the FJL4215OTU datasheet, pinout, applications, or equivalent options, key selection criteria include safe operating area (SOA) compliance at high VCE, hFE linearity across −1 A to −7 A, thermal resistance (RθJC = 0.83 °C/W), and Pb-free RoHS-compliant packaging.
Technical Context
This device operates as a linear PNP power switch with complementary pairing to NPN FJL4315/2SC5200, supporting Class AB audio output stages. Its wide SOA enables stable operation under reactive loads without secondary breakdown, and its gain linearity (hFE1 = 55–110 at −1 A; hFE2 = 35–60 at −7 A) reduces harmonic distortion in analog amplification.
Thermal design relies on direct case-to-heatsink mounting via the TO-264-3LD metal tab (pin 2), with transient thermal resistance enabling pulsed current handling up to −16 A (10 ms). The −5 V BVEBO rating limits base drive voltage swing in emitter-follower configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −250 V: Supports rail voltages up to ±125 V in push-pull amplifier topologies without breakdown. |
| IC (DC) | −17 A: Enables ≥200 W continuous output into 4 Ω loads with proper heatsinking and biasing. |
| PD | 150 W at TC = 25 °C: Requires minimum pad size PCB layout and forced-air or large heatsink for sustained operation. |
| fT | 30 MHz: Ensures adequate gain margin and stability in feedback-corrected audio amplifiers up to 100 kHz. |
| RθJC | 0.83 °C/W: Limits junction temperature rise to ≤125 °C with 150 W dissipation and 25 °C case temperature. |
| hFE1 | 55–110 @ VCE = −5 V, IC = −1 A: Provides predictable DC bias setting and low THD in quiescent conditions. |
| Cob | 360 pF @ VCB = −10 V: Influences Miller capacitance and high-frequency phase margin in common-emitter gain stages. |
Pinout & Package
Package: TO-264-3LD (Case 340CA), isolated metal tab, Pb-free, RoHS-compliant. Pin 2 (Collector) is electrically connected to the case and must be insulated from heatsink unless system ground reference permits.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal for current amplification; requires −1.0 to −1.5 V VBE(on) at −7 A IC for saturation. |
| 2 | Collector | Main current path input; electrically tied to metal tab-must be insulated from heatsink unless referenced to system ground. |
| 3 | Emitter | Current return path; connects to positive rail in PNP-based output stage; supports −5 V reverse bias (BVEBO). |
Key Features
| Feature | Design Value |
|---|---|
| Wide Safe Operating Area (SOA) | Enables reliable operation under inductive or capacitive loads without secondary breakdown up to 10 ms pulses. |
| High Gain Linearity | hFE variation <±20% from −1 A to −7 A ensures consistent current drive and low THD in Class AB audio output. |
| Thermal & Electrical SPICE Models | Available for accurate transient simulation of thermal runaway, SOA boundary crossing, and crossover distortion. |
| Complementary Pairing | Designed as direct PNP counterpart to NPN FJL4315/2SC5200 for matched push-pull output stages. |
Applications
| High-Fidelity Audio Output Amplifier | General Purpose Power Amplifier |
|---|---|
Use Scenario: Final output stage in discrete Class AB stereo amplifiers delivering ≥100 W per channel into 4–8 Ω speakers. IC Role / Device Role / Timing Role: PNP power switching element in push-pull pair, handling negative half-cycle current with precise bias control. Use Value: Low THD (<0.05%) achieved via hFE linearity and wide SOA, enabling clean reproduction of complex audio waveforms. | Use Scenario: Linear regulator pass element or motor drive H-bridge upper-leg switch in industrial control systems. IC Role / Device Role / Timing Role: High-voltage, high-current linear power switch operating in active region for precision current sourcing. Use Value: −250 V VCEO and −17 A IC support 200 V DC bus applications with margin for inductive kickback. |
| Discrete Audio Power Module | Replacement for Legacy 2SA1943 |
Use Scenario: Modular power stage assembly used in OEM audio equipment service and upgrade kits. IC Role / Device Role / Timing Role: Drop-in replacement transistor in multi-device power modules requiring matched thermal and electrical characteristics. Use Value: Identical TO-264-3LD footprint and hFE O-grade binning (55–110) ensure mechanical and electrical compatibility with existing layouts. | Use Scenario: Direct substitution for discontinued 2SA1943OTU in legacy amplifier designs still in production or repair. IC Role / Device Role / Timing Role: Functionally identical PNP power transistor with same marking (J4215O), package, and absolute ratings. Use Value: Same VCEO, IC, PD, and SOA as 2SA1943, validated by onsemi's cross-reference documentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 2SA1943OTU | Identical specifications, same TO-264-3LD package, same hFE O grade, but marked as discontinued in same datasheet revision. | No functional difference; used interchangeably in legacy audio amplifier designs. | Select only if available from surplus or legacy inventory; FJL4215OTU is the designated replacement part number. |
| FJA4213 | Same die in TO-3P package, lower PD = 130 W, RθJC = 0.96 °C/W, identical VCEO/IC/fT. | Requires different mechanical mounting and PCB footprint; suitable where TO-3P is preferred for ruggedness or legacy compatibility. | Choose when TO-3P form factor is required; derate power by ~13% versus FJL4215OTU due to higher thermal resistance. |
Compared with 2SA1943OTU, FJL4215OTU offers identical electrical performance and marking but reflects updated onsemi part numbering; compared with FJA4213, it delivers +15% power capability and improved thermal resistance in TO-264-3LD, enabling higher continuous output in space-constrained designs.
Availability
FJL4215OTU is available at Aetrix Electronics and suitable for high-fidelity audio output amplifiers, general-purpose power amplifiers, and discrete audio power modules requiring stable component supply despite its discontinued status through managed legacy inventory channels.
Supply support for FJL4215OTU 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 electronics, with leadership in power management, analog, sensors, and logic devices.
FJL4215OTU belongs to onsemi's high-reliability discrete power transistor product line, engineered specifically for demanding linear audio and industrial power amplification applications where SOA integrity and gain linearity are critical.
FAQ
Is FJL4215OTU still in production?
No, FJL4215OTU is officially marked as discontinued per onsemi's datasheet Revision 5 (May 2026). However, Aetrix Electronics maintains controlled legacy inventory and supports ongoing production runs through coordinated sourcing and lifecycle management programs for FJL4215OTU.
What is the pin configuration of FJL4215OTU?
FJL4215OTU uses TO-264-3LD package with pin 1 = Base, pin 2 = Collector (electrically connected to metal tab), and pin 3 = Emitter. This configuration is confirmed in the official onsemi datasheet ordering diagram and mechanical outline CASE 340CA.
Can FJL4215OTU replace 2SA1943OTU directly?
Yes, FJL4215OTU is functionally and mechanically identical to 2SA1943OTU - same TO-264-3LD package, same −250 V/−17 A/150 W ratings, same hFE O-grade binning (55–110), and same J4215O marking. onsemi explicitly lists them as interchangeable in the ordering table.
What thermal design considerations apply to FJL4215OTU?
FJL4215OTU has RθJC = 0.83 °C/W and requires minimum pad size PCB layout per onsemi guidelines. For 150 W dissipation, case temperature must stay ≤25 °C - achievable only with large heatsinks and forced airflow. Transient thermal curves show safe 10 ms pulse handling up to −16 A.
Does FJL4215OTU support SPICE simulation?
Yes, onsemi provides verified Thermal and Electrical SPICE models for FJL4215OTU, including junction-to-case thermal network and nonlinear Gummel-Poon parameters. These models support accurate simulation of SOA boundary crossing, thermal runaway, and distortion in audio amplifier feedback loops.
FJL4215OTU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-264-3, TO-264AA
- Packaging:
- Tube
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 17 A
- Voltage - Collector Emitter Breakdown (Max):
- 250 V
- Vce Saturation (Max) @ Ib, Ic:
- 3V @ 800mA, 8A
- Current - Collector Cutoff (Max):
- 5µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 1A, 5V
- Power - Max:
- 150 W
- Frequency - Transition:
- 30MHz
- Operating Temperature:
- -50°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-264-3
FJL4215OTU FAQ
1.How can I place an order for FJL4215OTU through Aetrix?
Please submit a Request for Quotation (RFQ) for FJL4215OTU 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 FJL4215OTU reliable?
The price and inventory of FJL4215OTU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FJL4215OTU is usually 5 days.
3.What payment methods are accepted for FJL4215OTU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FJL4215OTU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FJL4215OTU?
FJL4215OTU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FJL4215OTU 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 FJL4215OTU?
For technical support, including FJL4215OTU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FJL4215OTU requirements.
6.How does Aetrix verify that FJL4215OTU is sourced from the original manufacturer or authorized distributors?
All FJL4215OTU 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 FJL4215OTU meets industry standards.
7.What is the process for return or replacement of FJL4215OTU?
All FJL4215OTU units undergo pre-shipment inspection (PSI). If there is an issue with FJL4215OTU, 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 FJL4215OTU part is unused and in its original packaging.
Return procedure for FJL4215OTU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FJL4215OTU Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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onsemi
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MMBT3906-7-F
Diodes Incorporated
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Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC846BLT1G
onsemi
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
onsemi
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MMBT2222A-TP
Micro Commercial Co
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