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onsemi MJE4353
- Part No.:
- MJE4353
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-218-3
- Datasheet:
-
MJE4353.pdf
- Description:
- TRANS PNP 160V 16A SOT-93
- Quantity:
- Payment:
- Shipping:
Inventory:5,757
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Product details
Overview
MJE4353 from onsemi is a high-voltage, high-power PNP bipolar junction transistor designed for linear audio amplifier output stages and high-voltage DC-DC switching regulator power switches. It delivers 16 A continuous collector current, sustains 160 Vdc collector-emitter voltage, and exhibits 35 (typ) DC current gain at 8.0 Adc - enabling robust Class AB audio output and hard-switched flyback/forward converter topologies.
For engineers reviewing the MJE4353 datasheet, pinout, applications, or equivalent options, key selection criteria include its 160 Vdc VCEO(sus), 125 W power dissipation at TC = 25 °C, 1.0 °C/W thermal resistance (junction-to-case), TO-247 and SOT-93 package options, and verified performance in high-stress linear and switching power circuits.
Technical Context
The MJE4353 operates as a complementary PNP counterpart to the NPN MJE4343, sharing identical voltage and current ratings, thermal characteristics, and safe operating area (SOA) boundaries. Its design targets high-fidelity audio amplification where low VCE(sat) (2.0 Vdc max at 8.0 Adc) and stable hFE across temperature ensure minimal distortion and thermal runaway immunity.
In switching regulator applications, the device leverages its 160 Vdc reverse-bias SOA (RBSOA), validated under clamped turn-off conditions with VBE(off) ≤ 5 V, to sustain simultaneous high voltage and current during inductive load commutation without avalanche stress. Its Cob = 800 pF and fT = 1.0 MHz support moderate-speed switching up to ~100 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO(sus) | 160 Vdc - enables use in 120 VAC-derived supplies and Class G/H audio rails without breakdown risk. |
| IC (continuous) | 16 Adc - supports >200 W audio output stages and ≥300 W DC-DC converters with proper heatsinking. |
| PD @ TC = 25 °C | 125 W - requires minimum 1.0 °C/W heatsink + thermal interface to maintain TJ ≤ 150 °C at full load. |
| hFE | 35 (typ) @ IC = 8.0 Adc - ensures sufficient base drive efficiency and predictable bias stability in emitter-follower configurations. |
| VCE(sat) | 2.0 Vdc (max) @ IC = 8.0 Adc, IB = 800 mA - limits conduction loss to ≤16 W in linear mode, critical for thermal management. |
| RJC | 1.0 °C/W - defines maximum allowable thermal resistance from junction to heatsink mounting surface. |
| Cob | 800 pF - sets upper limit on switching speed and gate-drive energy requirements in hard-switched topologies. |
Pinout & Package
Available in two thermally optimized packages: TO-247 (Case 340L, Style 3) and SOT-93 (Case 340D, Style 1). Both are Pb-free, through-hole power packages with four terminals: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter, Pin 4 = Collector (dual-collector configuration for enhanced current handling and thermal spreading).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input requiring ~800 mA drive current to saturate at 8.0 Adc; low-impedance path for bias network connection. |
| 2 & 4 | Collector (dual) | Parallel-connected high-current output nodes; reduces effective current density and improves thermal distribution across package body. |
| 3 | Emitter | Main current return path; tied to ground or negative rail in PNP configurations; must handle full load current with minimal trace resistance. |
Key Features
| Feature | Design Value |
|---|---|
| High sustaining voltage | 160 Vdc VCEO(sus) - eliminates need for series-connected transistors in 100–120 VAC offline power supplies. |
| Low saturation voltage | 2.0 Vdc max VCE(sat) at 8.0 Adc - reduces conduction losses by ≥30% vs. legacy 3–4 V devices in linear amplifiers. |
| Dual-collector construction | Pins 2 and 4 both connected to collector - lowers thermal resistance and improves current sharing reliability under pulse loads. |
| Pb-free packaging | G-suffix marking and RoHS-compliant materials - meets industrial and consumer regulatory requirements without derating. |
| Wide SOA compliance | Validated RBSOA up to 160 V / 16 A with VBE(off) ≤ 5 V - enables direct use in unclamped inductive switchers with external snubbing. |
Applications
| High-Fidelity Audio Amplifier Output Stage | High-Voltage DC-DC Switching Regulator |
|---|---|
|
Use Scenario: Final output stage of a 150 W Class AB stereo amplifier powered from ±80 V rails. IC Role / Device Role / Timing Role: PNP power switch delivering negative half-cycle current; operated in linear region with active bias control. Use Value: 160 Vdc VCEO(sus) prevents breakdown during transient overloads; 35 hFE ensures stable quiescent current setting across temperature. |
Use Scenario: Main switch in a 300 W forward converter with 375 VDC bus derived from rectified 265 VAC. IC Role / Device Role / Timing Role: High-side PNP switch turning off inductive current; subjected to simultaneous high VCE and IC during turn-off. Use Value: Validated RBSOA up to 160 V / 16 A allows reliable operation with simple RC snubbers instead of complex active clamps. |
| Linear Power Supply Pass Transistor | Industrial Motor Drive H-Bridge Leg |
|
Use Scenario: Series pass element in a programmable 0–100 V, 10 A bench power supply. IC Role / Device Role / Timing Role: Voltage-controlled current source regulating output; dissipates up to 1 kW peak during short-circuit events. Use Value: 125 W PD rating and 1.0 °C/W RJC enable short-term overload capability with appropriate heatsink sizing and thermal foldback. |
Use Scenario: Low-side PNP switch in an H-bridge driving a 24 V, 15 A brushed DC motor with regenerative braking. IC Role / Device Role / Timing Role: Commutating switch handling bidirectional current; exposed to flyback voltage spikes during PWM off-time. Use Value: 160 Vdc VCB rating and 800 pF Cob provide margin against 100 V+ inductive kickback while maintaining manageable switching losses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BDW93C | Lower VCEO(sus) = 100 Vdc; hFE = 20–60 (min–max); TO-126 package; RJC = 3.0 °C/W. | Not suitable for >100 V bus applications; limited power dissipation (65 W) restricts use to <100 W amplifiers. | Select only for cost-sensitive, lower-voltage (<100 V) linear designs where thermal budget permits higher RJC. |
| MJ15025G | Higher VCEO(sus) = 250 Vdc; same TO-247 package; hFE = 20 (min); PD = 250 W; RJC = 0.6 °C/W. | Over-spec'd for 160 V systems; higher cost and larger footprint; requires more aggressive heatsinking despite better RJC. | Choose when future-proofing for 200+ V bus upgrades or when >125 W continuous dissipation is required. |
Compared with BDW93C, the MJE4353 provides 60% higher voltage rating and 92% lower thermal resistance - enabling compact, high-reliability designs in 120 VAC-derived systems. Against MJ15025G, it offers optimal balance of voltage headroom, thermal performance, and cost for 150–300 W applications without over-engineering.
Availability
MJE4353 is available at Aetrix Electronics and suitable for high-fidelity audio amplifiers, high-voltage DC-DC switching regulators, and industrial linear power supplies requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across production batches.
Supply support for MJE4353 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, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MJE4353 belongs to onsemi's high-voltage power transistor family engineered for rugged linear and switching power conversion - emphasizing voltage robustness, thermal reliability, and SOA integrity in mission-critical analog and power systems.
FAQ
What is the maximum continuous collector current rating for the MJE4353?
The MJE4353 has a maximum continuous collector current (IC) rating of 16 Adc at case temperature TC = 25 °C. This rating assumes adequate heatsinking to maintain junction temperature within –65 °C to +150 °C. At elevated case temperatures, the current must be derated per Figure 1 in the datasheet, with zero current allowed above 150 °C case temperature.
Does the MJE4353 support TO-247 and SOT-93 packages interchangeably in PCB layout?
No - the MJE4353 is offered in both TO-247 (Case 340L) and SOT-93 (Case 340D) packages, but they are mechanically incompatible. The TO-247 has a larger footprint, different lead spacing, and higher thermal mass. PCB layouts must be dedicated to one package type; no shared land patterns exist between them. The datasheet confirms TO-247 became the sole standard after June 2012.
What is the typical DC current gain (hFE) of the MJE4353 and under what conditions is it specified?
The MJE4353 exhibits a typical DC current gain (hFE) of 35 at IC = 8.0 Adc and VCE = 2.0 Vdc, with a minimum of 15 under those same conditions. At higher current (IC = 16 Adc, VCE = 4.0 Vdc), hFE drops to 15 (typ). These values are measured at TC = 25 °C and reflect the device's behavior in linear amplifier bias networks and high-current switching applications.
Can the MJE4353 be used in avalanche mode for energy clamping?
No - the MJE4353 is not rated or characterized for avalanche operation. Its Reverse Bias Safe Operating Area (RBSOA) in Figure 11 is explicitly verified under clamped turn-off conditions to prevent avalanche stress. Using the device in unclamped inductive switching without external protection risks permanent degradation due to secondary breakdown or junction damage.
Is the MJE4353 pin-compatible with the NPN MJE4343 in circuit design?
The MJE4353 and MJE4343 share identical pinouts (Pin 1 = Base, Pin 2 & 4 = Collector/Emitter respectively) and mechanical footprints in both TO-247 and SOT-93 packages, enabling complementary push-pull amplifier layouts. However, polarity reversal means base drive polarity, bias network orientation, and current flow direction must be inverted - they are functionally complementary, not drop-in replacements.
MJE4353 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-218-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 16 A
- Voltage - Collector Emitter Breakdown (Max):
- 160 V
- Vce Saturation (Max) @ Ib, Ic:
- 3.5V @ 2A, 16A
- Current - Collector Cutoff (Max):
- 750µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 15 @ 8A, 2V
- Power - Max:
- 125 W
- Frequency - Transition:
- 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- SOT-93
MJE4353 FAQ
1.How can I place an order for MJE4353 through Aetrix?
Please submit a Request for Quotation (RFQ) for MJE4353 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 MJE4353 reliable?
The price and inventory of MJE4353 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJE4353 is usually 5 days.
3.What payment methods are accepted for MJE4353?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJE4353 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MJE4353?
MJE4353 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MJE4353 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 MJE4353?
For technical support, including MJE4353 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJE4353 requirements.
6.How does Aetrix verify that MJE4353 is sourced from the original manufacturer or authorized distributors?
All MJE4353 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 MJE4353 meets industry standards.
7.What is the process for return or replacement of MJE4353?
All MJE4353 units undergo pre-shipment inspection (PSI). If there is an issue with MJE4353, 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 MJE4353 part is unused and in its original packaging.
Return procedure for MJE4353:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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