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onsemi MJD32CTF
- Part No.:
- MJD32CTF
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
MJD32CTF.pdf
- Description:
- TRANS PNP 100V 3A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:7,591
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Product details
Overview
MJD32CTF from ON Semiconductor is a PNP epitaxial silicon power transistor in D-PAK package, rated for -100 V VCEO, -3 A continuous collector current, and 15 W collector dissipation at TC = 25°C. It serves as a general-purpose amplifier and low-speed switching device in industrial power control, relay drivers, and DC-DC converter output stages.
For engineers reviewing the MJD32CTF datasheet, pinout, applications, or equivalent options, key selection criteria include its -100 V blocking capability, -1.2 V VCE(sat) at IC = -3 A / IB = -375 mA, hFE ≥ 10 at IC = -3 A, and D-PAK thermal performance for surface-mount power handling.
Technical Context
The MJD32CTF operates as a medium-power PNP bipolar junction transistor with fixed gain structure optimized for linear amplification and saturated switching. Its VCEO(sus) = -100 V and IC = -3 A rating enable use in high-voltage, moderate-current load switching where base-driven control is preferred over MOSFET gate drive complexity.
Thermal design relies on case-mounted heatsinking: 15 W PC at TC = 25°C drops to zero at TC = 150°C per linear derating curve. Electrical behavior is characterized by VBE(on) = -1.8 V at IC = -3 A and fT = 3 MHz - confirming suitability for <100 kHz switching and audio-frequency amplification, not RF or high-speed digital applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -100 V - Maximum collector-emitter voltage before breakdown; enables use in 48–72 V DC bus switching. |
| IC (DC) | -3 A - Continuous collector current limit; defines maximum steady-state load current capability. |
| PC (TC=25°C) | 15 W - Power dissipation at case temperature of 25°C; requires heatsink for sustained operation above ~1 W ambient. |
| VCE(sat) | -1.2 V @ IC = -3 A, IB = -375 mA - Low saturation voltage reduces conduction loss in switching applications. |
| hFE | 10–50 @ IC = -1 A to -3 A - Moderate DC current gain; dictates required base drive current for full saturation. |
| fT | 3 MHz - Current-gain bandwidth product; confirms usable range up to ~100 kHz switching or audio-band amplification. |
Pinout & Package
D-PAK (TO-252) surface-mount package with exposed drain pad thermally connected to collector; standard 3-pin configuration with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Control input terminal | Receives negative base current to turn on PNP device; requires current-limiting resistor from driver. |
| 2 (Collector) | Main current path (high-side switch node) | Connected to exposed metal tab; must be electrically isolated and thermally coupled to heatsink. |
| 3 (Emitter) | Current source reference terminal | Typically tied to positive rail in high-side switch configuration; provides return path for load current. |
Key Features
| Feature | Design Value |
|---|---|
| High VCEO rating | -100 V supports 72 V automotive and industrial DC bus designs without series stacking. |
| Low VCE(sat) | -1.2 V minimizes power loss and heat generation when fully saturated in switching mode. |
| D-PAK thermal performance | 15 W PC at TC = 25°C enables compact surface-mount power handling with external heatsink. |
| Electrically similar to TIP32C | Drop-in replacement for legacy through-hole TIP32C in upgraded surface-mount layouts. |
Applications
| Industrial Motor Control | DC-DC Converter Output Stage |
|---|---|
|
Use Scenario: Driving 24–48 V brushed DC motors in PLC I/O modules and motion controllers. IC Role / Device Role / Timing Role: High-side PNP switch controlling motor direction and braking via emitter-follower configuration. Use Value: -100 V VCEO withstands inductive kickback; -1.2 V VCE(sat) limits I²R loss during PWM on-time. |
Use Scenario: Synchronous rectifier or linear post-regulator in isolated flyback or forward converters. IC Role / Device Role / Timing Role: PNP pass transistor regulating output voltage under feedback control. Use Value: hFE ≥ 10 ensures stable biasing with low-control-current op-amp drivers; D-PAK enables board-level thermal management. |
| Relay and Solenoid Driver | Linear Audio Amplifier Stage |
|
Use Scenario: Replacing mechanical relays in HVAC control panels and industrial safety interlocks. IC Role / Device Role / Timing Role: Saturated switch energizing 12–48 V DC coils with fast turn-off via base pull-down. Use Value: -3 A IC supports >20 W coil loads; fT = 3 MHz ensures reliable 10–100 Hz switching with minimal storage time. |
Use Scenario: Complementary emitter-follower output stage in Class AB audio preamplifiers and signal conditioners. IC Role / Device Role / Timing Role: Linear current buffer delivering low-impedance drive to speaker or transducer loads. Use Value: VBE(on) = -1.8 V enables predictable bias point setting; safe operating area supports 10–20 V peak-to-peak swing into 8 Ω. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MJD32C | Same die, identical electrical specs; differs only in packaging suffix (-TF vs. bare -C). | No functional difference; -TF denotes tape-and-reel packaging for automated assembly. | Select MJD32CTF for SMT production lines requiring reel-fed placement; MJD32C for manual prototyping or non-reel use. |
| STMicroelectronics BDW53C | VCEO = -100 V, IC = -8 A, PC = 90 W; higher current/power but TO-220 package. | Requires through-hole mounting and larger heatsink; unsuitable for space-constrained D-PAK layouts. | Choose BDW53C only when >3 A load current or >15 W dissipation is required and board real estate allows TO-220 footprint. |
Compared with MJD32C and BDW53C, the MJD32CTF uniquely balances D-PAK surface-mount compatibility, -100 V/3 A rating, and production-ready tape-and-reel packaging - making it optimal for automated manufacturing of mid-power industrial controls where footprint and thermal interface matter.
Availability
MJD32CTF is available at Aetrix Electronics and suitable for industrial motor control, DC-DC converter output stages, and relay/solenoid driver circuits requiring stable component supply and long-term manufacturability.
Supply support for MJD32CTF 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 is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and logic solutions for automotive, industrial, cloud, and consumer markets.
The MJD32CTF belongs to ON Semiconductor's legacy power bipolar transistor portfolio, designed specifically for cost-sensitive, medium-voltage industrial switching and linear amplification where robustness and thermal reliability outweigh ultra-high-speed requirements.
FAQ
What is the maximum continuous collector current for the MJD32CTF?
The MJD32CTF has a maximum continuous collector current (IC) of -3 A at TC = 25°C. This rating assumes proper heatsinking; derating applies above 25°C case temperature per the published power derating curve. At TC = 100°C, the usable IC drops to approximately -1.5 A. The MJD32CTF must be operated within this limit to avoid thermal runaway or permanent damage.
Does the MJD32CTF have a built-in base-emitter resistor?
No, the MJD32CTF is a standard three-terminal PNP bipolar transistor with no integrated base-emitter resistor. External base current must be supplied through a discrete current-limiting resistor or active driver circuit. This design allows flexible biasing for both linear amplification and saturated switching modes, unlike digital transistors which integrate resistors.
Can the MJD32CTF replace a TIP32C in an existing design?
Yes, the MJD32CTF is electrically similar to the TIP32C and serves as a surface-mount drop-in alternative when layout allows D-PAK footprint substitution. Both share identical VCEO = -100 V, VCE(sat) ≈ -1.2 V, and hFE range. However, thermal interface differs: TIP32C uses TO-220 with screw-mount heatsink, while MJD32CTF requires soldered thermal pad attachment to PCB copper or heatsink.
What is the safe operating area (SOA) limitation for the MJD32CTF in switching applications?
The MJD32CTF SOA curve shows that at VCE = -40 V, the maximum pulsed collector current is limited to -5 A for 100 µs pulses. For DC operation, the -3 A IC limit governs. Exceeding SOA boundaries risks secondary breakdown. The MJD32CTF must be used with snubbers or clamping circuits when switching inductive loads to avoid voltage overshoot beyond -100 V VCEO.
Is the MJD32CTF suitable for automotive applications?
The MJD32CTF is not AEC-Q101 qualified and lacks automotive-grade screening or extended temperature validation. While its -65°C to +150°C TSTG and TJ ratings meet basic environmental ranges, ON Semiconductor does not specify automotive qualification for the MJD32CTF. For automotive use, consider AEC-Q101-qualified alternatives such as the NSS12201CF8T1G or similar PNP devices explicitly rated for automotive systems.
MJD32CTF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 50µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 10 @ 3A, 4V
- Power - Max:
- 1.56 W
- Frequency - Transition:
- 3MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
MJD32CTF FAQ
1.How can I place an order for MJD32CTF through Aetrix?
Please submit a Request for Quotation (RFQ) for MJD32CTF 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 MJD32CTF reliable?
The price and inventory of MJD32CTF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJD32CTF is usually 5 days.
3.What payment methods are accepted for MJD32CTF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJD32CTF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MJD32CTF?
MJD32CTF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MJD32CTF 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 MJD32CTF?
For technical support, including MJD32CTF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJD32CTF requirements.
6.How does Aetrix verify that MJD32CTF is sourced from the original manufacturer or authorized distributors?
All MJD32CTF 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 MJD32CTF meets industry standards.
7.What is the process for return or replacement of MJD32CTF?
All MJD32CTF units undergo pre-shipment inspection (PSI). If there is an issue with MJD32CTF, 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 MJD32CTF part is unused and in its original packaging.
Return procedure for MJD32CTF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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