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onsemi MJW21191G
- Part No.:
- MJW21191G
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-247-3
- Datasheet:
-
MJW21191G.pdf
- Description:
- TRANS PNP 150V 8A TO-247-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,588
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Product details
Overview
MJW21191G from onsemi is a complementary PNP silicon power transistor in TO−247AE package, rated for 150 VCEO, 8.0 A continuous collector current, and 125 W total power dissipation at TC = 25°C. It delivers high safe operating area (SOA) of 20 A/18 V/100 ms and DC current gain ≥15 at IC = 4.0 A, specifically engineered for high-fidelity audio amplifier output stages.
For engineers reviewing the MJW21191G datasheet, pinout, applications, or equivalent options, key selection criteria include SOA robustness under transient load, thermal resistance (RθJC = 1.0°C/W), VCE(sat) ≤ 2.0 V at IC = 8.0 A, and Pb-free compliance for modern audio power designs.
Technical Context
The MJW21191G operates as a linear PNP power switch with fully specified on-characteristics-including VBE(on) ≤ 2.0 V and hFE ≥ 5.0 at IC = 8.0 A-validated across temperature. Its SOA curve supports sustained 100 ms pulses up to 20 A and 18 V without second breakdown.
Thermal design is enabled by low junction-to-case resistance (1.0°C/W) and transient thermal response data for pulsed operation. The device exhibits fT = 4.0 MHz, confirming suitability for audio-frequency amplification where bandwidth and linearity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 150 V - Withstands 150 V collector-emitter voltage before breakdown, enabling use in ±75 V rail audio amplifiers. |
| IC (continuous) | 8.0 A - Supports high-current output stage operation without derating below 25°C case temperature. |
| PD @ TC = 25°C | 125 W - Delivers substantial linear power handling when mounted on heatsink with adequate thermal interface. |
| RθJC | 1.0 °C/W - Enables precise junction temperature estimation and reliable thermal margining in high-power designs. |
| SOA (100 ms) | 20 A / 18 V - Sustains short-duration overload conditions common in speaker protection and clipping scenarios. |
| hFE @ IC = 4.0 A | 15–100 - Provides stable bias control and predictable current drive in Class AB output stages. |
| VCE(sat) @ IC = 8.0 A | ≤2.0 V - Minimizes conduction loss and heat generation during saturation in quasi-complementary topologies. |
Pinout & Package
Package: TO−247AE (Case 340L, Style 3), Pb-free, through-hole mounting with isolated collector tab. Thermal path optimized via direct metal-to-heatsink contact.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input for bipolar junction conduction; requires current-limited drive due to IB max = 2.0 A. |
| 2 | Collector | Main high-current output terminal; electrically connected to package tab for thermal and electrical grounding. |
| 3 | Emiter | Current source terminal in PNP configuration; connects to positive supply rail in typical audio output stage layouts. |
Key Features
| Feature | Design Value |
|---|---|
| High SOA rating | 20 A / 18 V / 100 ms pulse capability ensures reliability during dynamic audio transients and speaker impedance dips. |
| DC current gain specification | hFE ≥ 15 at IC = 4.0 A enables stable quiescent current setting in Class AB bias networks. |
| Thermal resistance | RθJC = 1.0°C/W allows accurate thermal modeling and heatsink sizing for continuous 125 W operation. |
| Pb-free packaging | G-suffix confirms RoHS-compliant TO−247AE construction, supporting environmental compliance in final audio equipment. |
| Temperature-stable on-characteristics | All on-parameters (VCE(sat), VBE(on), hFE) specified at elevated temperatures up to 100°C for real-world thermal conditions. |
Applications
| High-Fidelity Audio Amplifiers | Professional PA Output Stages |
|---|---|
|
Use Scenario: Dual-rail Class AB power amplifier delivering 100+ W into 4 Ω or 8 Ω loads with low THD. IC Role / Device Role / Timing Role: PNP output transistor in complementary pair with MJW21192G, conducting during negative half-cycle of audio signal. Use Value: High SOA and low VCE(sat) minimize distortion and thermal runaway risk during high-dynamic-range program material. |
Use Scenario: 300 W+ touring-grade loudspeaker amplifier requiring ruggedized output devices. IC Role / Device Role / Timing Role: Primary PNP switching element in quasi-complementary output stage driving reactive speaker loads. Use Value: 20 A/18 V SOA withstands momentary short-circuit events and low-impedance bass transients without failure. |
| Studio Monitor Power Modules | Active Subwoofer Amplifiers |
|
Use Scenario: Bi-amplified near-field studio monitor with discrete analog output stage. IC Role / Device Role / Timing Role: Linear PNP pass device controlling low-frequency driver current with precision bias stability. Use Value: hFE ≥ 15 at 4.0 A ensures consistent quiescent current across unit-to-unit and temperature variation. |
Use Scenario: Sealed or ported subwoofer amplifier operating at 20–120 Hz with high peak current demand. IC Role / Device Role / Timing Role: High-current PNP output switch delivering >15 A peaks into 2 Ω or 4 Ω voice coils. Use Value: RθJC = 1.0°C/W enables compact heatsinking while maintaining <150°C junction temperature under sustained bass passages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BDW84C | Lower VCEO (100 V), lower SOA (10 A/10 V/100 ms), RθJC = 2.5°C/W | Suitable only for ≤50 W amplifiers with conservative rail voltages and thermal margins. | Select BDW84C only if cost sensitivity outweighs SOA and thermal performance requirements. |
| MJE15034 | Higher VCEO (250 V), same IC (8.0 A), but lower fT (2.5 MHz) and no Pb-free G-suffix option | Better for high-voltage tube-hybrid or industrial motor drive applications, less optimized for wideband audio. | Choose MJE15034 when extended voltage headroom is required and RoHS compliance is not mandatory. |
Compared with BDW84C and MJE15034, the MJW21191G provides superior SOA robustness and thermal efficiency for high-power audio output stages, while maintaining industry-standard TO−247 footprint and Pb-free compliance for modern production.
Availability
MJW21191G is available at Aetrix Electronics and suitable for high-fidelity audio amplifiers, professional PA systems, and active studio monitors requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MJW21191G 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 power, analog, sensor, and connectivity solutions for automotive, industrial, and consumer markets.
The MJW21191G belongs to onsemi's complementary plastic power transistor family, designed explicitly for high-reliability linear audio output stages where SOA, thermal performance, and manufacturability are critical.
FAQ
What is the maximum continuous collector current rating for MJW21191G?
The MJW21191G has a maximum continuous collector current (IC) rating of 8.0 A at case temperature TC = 25°C. Derating is required above this temperature at 0.65 W/°C, and actual usable current depends on heatsink performance and ambient conditions. The MJW21191G maintains specified on-characteristics up to 100°C junction temperature.
Is MJW21191G pin-compatible with MJW21192G?
Yes, the MJW21191G (PNP) and MJW21192G (NPN) share identical TO−247AE package dimensions and pinout: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter. This complementary pairing enables matched layout and thermal symmetry in push-pull audio output stages using the MJW21191G and MJW21192G together.
Does MJW21191G meet RoHS requirements?
Yes, the "G" suffix in MJW21191G explicitly denotes a Pb-free package compliant with EU RoHS Directive 2011/65/EU. onsemi confirms this part uses lead-free terminations and halogen-free molding compound, verified per J-STD-609 and IPC-1752 standards.
What is the safe operating area (SOA) limit for MJW21191G at 10 ms pulse width?
Per Figure 4 in the official datasheet, the MJW21191G SOA limit at 10 ms pulse width is 40 A at 10 V or 25 A at 15 V, assuming TJ(pk) ≤ 150°C. These values reflect second-breakdown-limited operation and must be applied with appropriate base drive and thermal management to avoid destructive failure of the MJW21191G.
Can MJW21191G be used in parallel configurations?
Yes, the MJW21191G supports paralleling with current-sharing resistors (typically 0.1–0.22 Ω emitter resistors) due to its positive temperature coefficient of VCE(sat). Matching hFE and thermal mounting is recommended to ensure balanced conduction; the MJW21191G's specified hFE range (15–100) supports practical binning for parallel use.
MJW21191G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 8 A
- Voltage - Collector Emitter Breakdown (Max):
- 150 V
- Vce Saturation (Max) @ Ib, Ic:
- 2V @ 1.6A, 8A
- Current - Collector Cutoff (Max):
- 10µA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 15 @ 4A, 2V
- Power - Max:
- 125 W
- Frequency - Transition:
- 4MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247-3
MJW21191G FAQ
1.How can I place an order for MJW21191G through Aetrix?
Please submit a Request for Quotation (RFQ) for MJW21191G 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 MJW21191G reliable?
The price and inventory of MJW21191G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MJW21191G is usually 5 days.
3.What payment methods are accepted for MJW21191G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MJW21191G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MJW21191G?
MJW21191G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MJW21191G 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 MJW21191G?
For technical support, including MJW21191G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MJW21191G requirements.
6.How does Aetrix verify that MJW21191G is sourced from the original manufacturer or authorized distributors?
All MJW21191G 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 MJW21191G meets industry standards.
7.What is the process for return or replacement of MJW21191G?
All MJW21191G units undergo pre-shipment inspection (PSI). If there is an issue with MJW21191G, 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 MJW21191G part is unused and in its original packaging.
Return procedure for MJW21191G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MJW21191G Tags
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MMBT3906LT1G
onsemi
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MMBT3904LT1G
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MMBT3906-7-F
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MMBT3904-TP
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MMBT2222A-7-F
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BC846BLT1G
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
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MMBTA06LT1G
onsemi
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MMBT2222ALT1G
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