onsemi 2SC4488S-AN

Overview

2SC4488S-AN from onsemi is an NPN bipolar junction transistor (BJT) designed for high-voltage switching applications, featuring V_CEO = 100 V, I_C = 1 A, f_T = 120 MHz, V_CE(sat) = 0.1–0.4 V at I_C = 400 mA, and SC-71 (NMP) surface-mount package. It serves as a fast-switching power switch in DC-DC converters and motor drivers.

For engineers reviewing the 2SC4488S-AN datasheet, pinout, applications, or equivalent options, key selection criteria include its low saturation voltage, high breakdown rating, fast switching times (t_on = 80 ns, t_f = 50 ns), and h_FE rank S (140–280) for predictable gain control in linear and switching amplifiers.

Technical Context

The 2SC4488S-AN is fabricated using FBET and MBIT processes to achieve high breakdown voltage and low saturation loss. Its NPN structure supports common-emitter switching with fixed gain-bandwidth trade-off optimized for 100 MHz operation at I_C = 100 mA and V_CE = 10 V.

It operates within a junction temperature range of –55°C to +150°C and is rated for continuous collector dissipation of 1 W at T_A = 25°C. The device exhibits low output capacitance (C_ob = 8.5 pF at V_CB = –10 V) and tight V_CE(sat) tolerance across production lots due to S-rank h_FE binning.

Key Specifications

Pinout & Package

Package: SC-71 (JEITA/ JEDEC), also designated NMP(Taping); 3-pin surface-mount plastic package with 2.54 mm lead pitch, 0.275 g mass, and tape-and-reel packaging (2,500 pcs./box).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN switching transistor applications.

Compared with MJD127G and BC817-40,215, the 2SC4488S-AN uniquely balances 100 V capability, 1 A continuous rating, low V_CE(sat), and binned h_FE-making it optimal for industrial 24–48 V switching where thermal margin and gain predictability are critical.

Availability

2SC4488S-AN is available at Aetrix Electronics and suitable for DC-DC converters, motor drivers, LED drivers, and industrial sensor interfaces requiring stable component supply, long-term manufacturability, and Pb-free compliance.

Supply support for 2SC4488S-AN 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.

The 2SC4488S-AN belongs to onsemi's general-purpose bipolar transistor product line, engineered for robust high-voltage switching in cost-sensitive industrial power systems where reliability and parametric consistency are essential.

FAQ

What is the maximum continuous collector current rating for the 2SC4488S-AN?

The 2SC4488S-AN is rated for 1 A continuous collector current (I_C) at T_A = 25°C. Derating is required above 25°C ambient, with full derating to zero at T_A = 100°C per the PC–Ta curve in the datasheet. Pulse current up to 2 A is allowed for ≤100 ms with 10% duty cycle. This rating ensures safe operation in 24 V motor control and DC-DC converter primary switches.

Is the 2SC4488S-AN RoHS and Pb-free compliant?

Yes, the 2SC4488S-AN is Pb-free and RoHS-compliant, as confirmed by the "Pb Free" marking in the Ordering Information table and the "Pb Free" shipping memo in the official onsemi datasheet (No. 3094-2/8). It meets JESD97 and JEDEC JS-001 ESD standards and is qualified for lead-free reflow soldering per J-STD-020.

What does the 'S' suffix in 2SC4488S-AN indicate?

The 'S' in 2SC4488S-AN denotes the h_FE gain rank: 140–280 at V_CE = –5 V and I_C = –100 mA. This binning ensures tighter gain distribution than the 'T' variant (200–400), improving predictability in bias-critical analog amplifier and current-source designs using the 2SC4488S-AN.

Can the 2SC4488S-AN be used in avalanche mode?

No, the 2SC4488S-AN is not rated or characterized for avalanche operation. Its absolute maximum ratings specify V_CEO = 100 V and V_CBO = 120 V as non-repetitive limits only. Operation beyond V_CEO risks permanent degradation. For avalanche-tolerant designs, onsemi offers specifically rated parts such as the MJB44H11, not the 2SC4488S-AN.

What is the thermal resistance junction-to-ambient (R_θJA) for the 2SC4488S-AN in standard PCB layout?

The datasheet does not publish a specific R_θJA value for the 2SC4488S-AN. However, based on its SC-71 package size (6.9 × 4.5 mm), typical R_θJA ranges from 250°C/W (no copper) to 120°C/W (with 1-in² 2-oz copper pad). For thermal design using the 2SC4488S-AN, engineers should refer to the PC–Ta derating curve and assume worst-case R_θJA ≈ 200°C/W unless board-level testing confirms lower values.