D882 NPN 30V 3A 1.25W Transistor TO-126

D882 NPN 30V 3A 1.25W Transistor (TO-126) delivers reliable medium-power amplification and switching. Designers deploy it in regulator stages, driver stages, and general-purpose power control where a compact TO-126 package and up to 3 A current improve efficiency.

Key Features:

• 30 V Rating: Supports up to 30 V V_CEO for common low-voltage power rails.
• 3 A Collector Current: Drives motors, relays, and power stages with headroom.
• Low Saturation: Achieves low V_CE(sat) when driven correctly for reduced loss.
• Wide Gain Options: Offers h_FE grades across typical ranges for flexible design.
• TO-126 Package: Enables compact layout and straightforward heatsinking.

Technical Specifications:

• Type: NPN junction transistor
• V_CEO (Collector-Emitter): 30 V
• I_C (Continuous): 3 A
• P_D (Power Dissipation): 1.25 W (free air, refer to thermal curves)
• V_CE(sat): Typically ≤ 0.5–0.7 V at I_C ≈ 2 A with adequate base drive
• h_FE (DC Gain): Typical 60–250 depending on grade and test current
• f_T (Transition Frequency): ~3 MHz (typical)
• V_EBO (Emitter-Base): 5 V (max)
• Operating Junction Temperature: −55 °C to +150 °C (typical rating)

Mechanical Specifications:

• Package: TO-126, 3 leads, exposed metal tab
• Tab Connection: Collector (verify on mechanical drawing)
• Lead Finish: Tin-plated for solderability
• Encapsulation: Molded epoxy, UL94-V0 class materials (typical)

Dimensions:

• Body Size (approx.): 7.0 mm × 10.5 mm × 2.3 mm
• Lead Pitch: ~2.3–2.54 mm between adjacent leads
• Pin Length: ~14–17 mm from body (trim as required)
• Confirm exact dimensions in the supplier’s TO-126 mechanical drawing before PCB design.

Pinout and Wiring:

• Pin 1: Emitter
• Pin 2: Collector (also connected to tab)
• Pin 3: Base
• Wiring Note: Drive the base through a resistor; add a flyback diode across inductive loads; check orientation facing the flat front of the package.

Datasheet Reference:

• Search “D882 (2SD882) transistor datasheet TO-126” to download full electrical characteristics, safe operating area, and mechanical drawings from the original or equivalent manufacturers.

Applications:

• Driver Stages: Power driving for relays, LEDs, and small DC motors.
• Linear Regulation: Pass-transistor roles in low-voltage regulators.
• Audio Stages: Pre-driver or driver transistor in amplifier modules.
• General Switching: Medium-power switching in hobby and industrial boards.

Equivalent Models:

• 2SD880: NPN, similar family and package
• BD139: NPN TO-126 with comparable use case (verify voltage/current)
• TIP31C: NPN TO-220 substitute (different package; verify thermal and pinout)

Package Includes:

• 1 x D882 NPN 30V 3A 1.25W Transistor (TO-126)