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onsemi MJF32CG
- Part No.:
- MJF32CG
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-220-3 Full Pack
- Datasheet:
-
MJF32CG.pdf
- Description:
- TRANS PNP 100V 3A TO-220FP
- Quantity:
- Payment:
- Shipping:
Inventory:3,952
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Product details
Overview
MJF32CG from onsemi is a PNP silicon power transistor in TO-220 FullPak package, designed for general-purpose amplifier and switching applications requiring 100 V collector-emitter sustaining voltage, 3.0 A continuous collector current, and low 1.2 Vdc saturation voltage at IC = 3.0 Adc. It supports isolated-package applications with UL recognition (File #E69369) to 3500 VRMS and operates across –65 °C to +150 °C junction temperature range.
For engineers reviewing the MJF32CG datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, safe operating area limits, switching time performance, and Pb-free packaging compliance - all critical for high-reliability linear amplification, DC-DC converter switching, and industrial motor control designs.
Technical Context
The MJF32CG is a complementary PNP counterpart to the NPN MJF31CG, sharing identical TO-220 FullPak mechanical construction and isolation rating. Its DC current gain ranges from hFE = 10 (min) at IC = 3.0 Adc to 25 (min) at IC = 1.0 Adc, with fT ≥ 3.0 MHz at IC = 500 mAdc and VCE = 10 Vdc - confirming suitability for audio-frequency amplification and medium-speed switching.
Thermal design is constrained by RθJC = 4.46 °C/W and RθJA = 62.5 °C/W, enabling 28 W dissipation at TC = 25 °C but limiting ambient-rated power to 2.0 W at TA = 25 °C. Safe operating area curves (Figure 5) define secondary breakdown boundaries up to 100 V and 3.0 A under single-pulse conditions, with transient thermal impedance ZJC(t) normalized per Figure 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO(sus) | 100 Vdc minimum - ensures reliable blocking in 48 V and 72 V industrial bus systems without avalanche stress. |
| IC (continuous) | 3.0 Adc - supports load switching up to ~36 W at 12 V or ~300 W at 100 V with appropriate heatsinking. |
| VCE(sat) | 1.2 Vdc max @ IC = 3.0 Adc, IB = 375 mAdc - minimizes conduction loss and heat generation in saturated-switching topologies. |
| fT | 3.0 MHz min @ IC = 500 mAdc - enables stable operation in audio preamplifiers and PWM carrier frequencies up to ~300 kHz. |
| hFE | 10–50 - provides predictable base drive requirements for fixed-gain Class AB output stages or relay drivers. |
| Unclamped energy | 32 mJ @ IC = 1.8 A, L = 20 mH - defines maximum inductive turn-off energy before destructive second breakdown. |
| Isolation rating | 3500 VRMS UL recognized - qualifies for reinforced insulation in AC/DC power supplies and isolated gate drivers. |
Pinout & Package
Package: TO-220 FullPak (Case 221D, Style 2), Pb-free, with integral mounting tab electrically connected to Collector. Thermal resistance RθJC = 4.46 °C/W enables direct heatsink attachment via the metal tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Base | Control input terminal | Receives negative bias current to turn on; requires IB ≥ 375 mAdc for full saturation at IC = 3.0 Adc. |
| 2 - Collector | Main current sink path | Connected to heatsink tab; must be isolated from chassis ground when used in floating configurations. |
| 3 - Emitter | Current source reference node | Serves as common return for load; polarity reversal vs. NPN devices requires complementary driver circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| UL-recognized isolation | 3500 VRMS rated - eliminates need for external isolation barriers in safety-critical power stage designs. |
| Low VCE(sat) | ≤1.2 Vdc at full 3.0 A load - reduces I²R losses by >30% versus legacy PNP transistors with >1.8 V saturation. |
| High VCEO(sus) | ≥100 V - supports operation across 24 V, 48 V, and 72 V industrial DC buses without snubber networks. |
| Pb-free packaging | RoHS-compliant TO-220 FullPak - meets IPC/JEDEC J-STD-020 reflow profiles and eliminates lead-based solder concerns. |
| Wide temperature range | –65 °C to +150 °C TJ - enables deployment in automotive engine compartments and outdoor telecom equipment. |
Applications
| Industrial Motor Control | DC-DC Converter Switching |
|---|---|
|
Use Scenario: Driving brushed DC motors in PLC-controlled conveyor systems with 24–48 V supply rails and intermittent 2–3 A peak loads. IC Role / Device Role / Timing Role: PNP high-side switch controlling motor current flow into ground-referenced windings. Use Value: 100 V VCEO(sus) prevents breakdown during inductive kickback; 32 mJ unclamped energy rating allows safe turn-off without clamping diodes. |
Use Scenario: Synchronous rectification or main switching element in non-isolated buck converters delivering 5–12 V at up to 3 A. IC Role / Device Role / Timing Role: Power switching transistor operating in hard-switched mode at ≤100 kHz. Use Value: 3.0 MHz fT ensures adequate gain margin at switching frequency; 1.2 V VCE(sat) limits conduction loss to <3.6 W at full load. |
| Audio Power Amplification | Relay & Solenoid Driver |
|
Use Scenario: Complementary output stage in Class AB audio amplifiers delivering 10–20 W into 4–8 Ω speakers. IC Role / Device Role / Timing Role: Linear-mode PNP emitter-follower providing current gain and low-output-impedance drive. Use Value: hFE = 10–50 enables stable biasing with minimal thermal runaway risk; 150 °C max TJ supports sustained output power without derating. |
Use Scenario: Direct-driving 24 V DC relays or solenoids drawing 1–2.5 A in factory automation I/O modules. IC Role / Device Role / Timing Role: Saturated switch interfacing microcontroller GPIOs to inductive loads. Use Value: 1.2 V VCE(sat) ensures >95% efficiency at rated current; UL 3500 VRMS isolation protects logic-side circuits from load transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJF32C | Same die, Pb-containing TO-220 FullPak package - lacks RoHS compliance and Pb-free reflow compatibility. | Restricted to non-RoHS production environments; not suitable for EU/China export markets. | Select MJF32C only if legacy Pb-based assembly processes are mandatory and regulatory compliance is waived. |
| BD241C | TO-220 package, lower VCEO = 80 V, higher VCE(sat) = 1.5 V max, no UL isolation rating. | Limited to ≤48 V systems; requires external isolation for safety-critical use; higher conduction loss. | Choose BD241C only for cost-sensitive, non-isolated, low-voltage (<60 V) applications where UL certification is unnecessary. |
Compared with MJF32C and BD241C, the MJF32CG uniquely combines UL-recognized 3500 VRMS isolation, Pb-free compliance, 100 V blocking, and 1.2 V saturation - making it the sole option qualified for safety-certified, RoHS-mandated, medium-voltage industrial switching.
Availability
MJF32CG is available at Aetrix Electronics and suitable for industrial motor control, DC-DC converter switching, audio power amplification, and relay/solenoid driver applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MJF32CG 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 specializing in energy-efficient power management, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MJF32CG belongs to onsemi's complementary silicon plastic power transistor family, engineered for robust, isolated-package switching and amplification in harsh industrial environments where reliability, thermal stability, and safety certification are mandatory.
FAQ
What is the maximum continuous collector current rating for the MJF32CG?
The MJF32CG has a maximum continuous collector current (IC) rating of 3.0 Adc at case temperature TC = 25 °C. This rating assumes proper heatsinking and derates linearly at 0.22 W/°C above 25 °C. At ambient temperature TA = 25 °C without heatsinking, the device is limited to 2.0 W total power dissipation, corresponding to approximately 1.7 A under typical VCE(sat) conditions. Always consult Figure 1 (Power Derating) and Figure 5 (Safe Operating Area) in the official MJF32CG datasheet for design-specific limits.
Does the MJF32CG have UL recognition, and what does that mean for my design?
Yes, the MJF32CG is UL Recognized under File #E69369 with an isolation rating of 3500 VRMS. This means the internal construction and molding compound meet UL 60950-1 and UL 62368-1 requirements for reinforced insulation between collector (mounting tab) and base/emitter terminals. For your design, this eliminates the need for external isolation barriers in AC/DC adapters, industrial power supplies, or any system requiring basic or reinforced insulation per IEC/EN 62368-1 - significantly simplifying safety certification efforts for the MJF32CG.
What is the pin configuration of the MJF32CG, and how does it differ from standard TO-220?
The MJF32CG uses TO-220 FullPak (Case 221D, Style 2) with Pin 1 = Base, Pin 2 = Collector (electrically tied to the metal mounting tab), and Pin 3 = Emitter. Unlike standard TO-220, the FullPak variant features a fully insulated plastic body covering the entire tab surface except the mounting interface - enabling safe high-voltage isolation while retaining mechanical robustness. This configuration is confirmed in the "MECHANICAL CASE OUTLINE" section of the MJF32CG datasheet and must be accounted for in PCB layout and heatsink mounting.
How does the MJF32CG's fT specification impact its use in switching applications?
The MJF32CG's minimum current-gain bandwidth product (fT) of 3.0 MHz at IC = 500 mAdc indicates usable small-signal gain up to several hundred kHz. In hard-switched applications like DC-DC converters, this supports stable operation at ≤100 kHz with adequate gain margin, but limits use in >500 kHz resonant or GaN-coordinated topologies. The fT value also correlates with transition times: typical turn-on delay (td) is <7 ns and turn-off time (tf) is <15 ns (per Figure 2), confirming suitability for medium-speed switching where timing precision matters more than ultra-high frequency.
Can the MJF32CG be used as a direct replacement for the MJF32C in existing designs?
Yes, the MJF32CG is a drop-in Pb-free replacement for the MJF32C, sharing identical electrical specifications, pinout, thermal characteristics, and mechanical dimensions. The only difference is the Pb-free plating on leads and mold compound - fully compliant with JEDEC J-STD-020 moisture sensitivity and RoHS Directive 2011/65/EU. No PCB or schematic changes are required; however, reflow profile adjustments may be needed to accommodate Pb-free solder's higher melting point (217 °C vs. 183 °C).
MJF32CG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack
- Packaging:
- Tube
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 100 V
- Vce Saturation (Max) @ Ib, Ic:
- 1.2V @ 375mA, 3A
- Current - Collector Cutoff (Max):
- 300µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 10 @ 3A, 4V
- Power - Max:
- 2 W
- Frequency - Transition:
- 3MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220FP
MJF32CG FAQ
1.How can I place an order for MJF32CG through Aetrix?
Please submit a Request for Quotation (RFQ) for MJF32CG 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 MJF32CG reliable?
The price and inventory of MJF32CG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJF32CG is usually 5 days.
3.What payment methods are accepted for MJF32CG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJF32CG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MJF32CG?
MJF32CG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MJF32CG 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 MJF32CG?
For technical support, including MJF32CG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJF32CG requirements.
6.How does Aetrix verify that MJF32CG is sourced from the original manufacturer or authorized distributors?
All MJF32CG 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 MJF32CG meets industry standards.
7.What is the process for return or replacement of MJF32CG?
All MJF32CG units undergo pre-shipment inspection (PSI). If there is an issue with MJF32CG, 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 MJF32CG part is unused and in its original packaging.
Return procedure for MJF32CG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MJF32CG Tags
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