onsemi MJD2955-001

Overview

MJD2955-001 from onsemi is a PNP silicon power transistor in DPAK (Case 369C) surface-mount package, rated for 60 V_CEO, 10 A_C, and 20 W at T_C = 25 °C, designed for general-purpose amplification and low-speed switching in power supply output stages and motor drive circuits.

For engineers reviewing the MJD2955-001 datasheet, pinout, applications, or equivalent options, key selection criteria include its V_CEO = 60 V, I_C = 10 A, h_FE ≥ 20 at 4 A, V_CE(sat) ≤ 1.1 V at I_C/I_B = 10, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This PNP bipolar junction transistor operates in linear or saturated switching modes with DC current gain (h_FE) specified from 5 to 100 across 4–10 A collector current, and features f_T = 2 MHz typical for audio-frequency amplification. Its safe operating area (SOA) is defined up to 150 °C junction temperature with second-breakdown limits validated per Figure 9.

Thermal design relies on R_JC = 6.25 °C/W and R_JA = 71.4 °C/W (on minimum recommended PCB pad), supporting surface-mount thermal management in industrial power modules. The device meets UL 94 V-0 flammability rating and is Pb-free/RoHS compliant.

Key Specifications

Pinout & Package

DPAK-3 (Case 369C) surface-mount package: 6.10 mm × 6.54 mm × 2.28 mm body with exposed drain pad (pin 2 & 4) for thermal conduction and mechanical anchoring.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP power transistor applications.

Compared with MJE2955G and BD249C, the MJD2955-001 offers superior surface-mount integration, verified automotive qualification (via NJV prefix), and tighter thermal resistance control on PCB-making it the preferred choice for new SMT power designs requiring reliability and density.

Availability

MJD2955-001 is available at Aetrix Electronics and suitable for audio amplifier output stages, linear voltage regulator pass elements, and automotive HVAC blower drivers requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for MJD2955-001 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 MJD2955-001 belongs to onsemi's complementary power transistor family designed for robust, cost-effective linear and switching power applications-including audio amplification, motor control, and power supply regulation-where high current, moderate voltage, and thermal reliability are essential.

FAQ

What is the maximum junction temperature specification for the MJD2955-001?

The MJD2955-001 has an operating junction temperature range of −55 °C to +150 °C, as confirmed in the Absolute Maximum Ratings table. This wide range supports use in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. Thermal design must ensure T_J remains within this limit using R_JC = 6.25 °C/W and appropriate PCB copper area. The MJD2955-001 datasheet specifies SOA curves referenced to T_J(pk) = 150 °C.

Is the MJD2955-001 pin-compatible with the MJD2955T4G?

Yes-the MJD2955-001 and MJD2955T4G share identical DPAK-3 (Case 369C) packaging, pinout (Base–Collector–Emitter–Collector), and electrical specifications. The "-001" suffix denotes a specific ordering variant (likely tape-and-reel with standard marking), while "T4G" indicates tape-and-reel packaging with Pb-free compliance. Both are functionally and mechanically interchangeable in PCB layout. The MJD2955-001 datasheet confirms compatibility via shared Case 369C mechanical drawings and identical MAXIMUM RATINGS.

Does the MJD2955-001 support automotive applications?

Yes-the MJD2955-001 is available in an NJV-prefixed variant (e.g., NJVMJD2955T4G) that is AEC-Q101 qualified and PPAP capable, meeting automotive reliability standards for temperature cycling, ESD, and lifetime stress. While the base MJD2955-001 part number itself is not explicitly marked as automotive-grade in the datasheet, its underlying die and process are qualified via the NJV family. Designers targeting automotive HVAC or body control modules should specify the NJV variant to ensure compliance. The MJD2955-001 shares all core electrical and thermal specs with the NJV version.

What is the safe operating area (SOA) limitation for the MJD2955-001 at DC operation?

Per Figure 9 in the MJD2955-001 datasheet, the DC safe operating area is bounded by thermal limits at T_C = 25 °C (D = 0.1), with maximum allowable I_C decreasing as V_CE increases-for example, ~6 A at 10 V, ~2 A at 40 V, and ~0.8 A at 60 V. Second breakdown is not limiting at DC; the curve reflects junction temperature rise governed by R_JA = 71.4 °C/W and power dissipation. Derating is required above 25 °C case temperature at 0.16 W/°C. The MJD2955-001 SOA data assumes minimum recommended PCB pad size.

Can the MJD2955-001 be used as a direct replacement for the MJE2955 in existing designs?

No-the MJD2955-001 uses a DPAK surface-mount package (Case 369C), whereas the MJE2955 uses a TO-220 through-hole package. Although electrically similar per the datasheet ("Electrically Similar to MJE2955"), the MJD2955-001 requires a different footprint, stencil design, and reflow profile. It is not a drop-in replacement. However, the MJD2955-001 can replace MJE2955 in new SMT designs where board space, automated assembly, and thermal performance on PCB are priorities. The MJD2955-001 shares identical V_CEO, I_C, and h_FE ratings.