SIP & D-34 Package Overview

SIP (Single In-line Package)

SIP (Single In-line Package) is a through-hole IC package    with pins emerging from one side of the package body in a single straight    line. When mounted on a PCB, the package stands upright. Standard pin pitch    is 2.54 mm, with pin counts typically ranging from 2 to 23. SIP is    cost-effective, easy to install, and ideal for small-scale ICs.

Key Features

• Simple structure with a single row of pins
• Low cost and easy assembly
• Compact footprint compared to DIP
• Common pin counts: 3–16
• ZIP variant available for higher pin density

D-34 Package (Two Meanings)

1. D-34 High-Power Bridge Rectifier Package

In power semiconductors, D-34 refers to a square single-phase    bridge rectifier package with screw mounting and excellent thermal    conductivity. Typical dimensions are 28.5 × 28.5 × 9.8 mm with 4 pins.

• Current rating: 25 A / 35 A
• Voltage range: 200 V to 1200 V
• Surge current: up to 475 A
• Operating temperature: -55°C to +150°C
• Applications: industrial power supplies, motor drives, welding equipment

2. D-34 Ceramic Dual In-line Package (CerDIP-34)

In IC packaging, D-34 may also refer to a 34-pin Ceramic    Dual In-line Package (CerDIP-34) with glass sealing, known for high    reliability and hermeticity.

• 34 pins (17 per side), 2.54 mm pitch, 7.62 mm row spacing
• Hermetic glass-sealed ceramic body
• Superior environmental protection and temperature range
• Applications: military, aerospace, high-reliability industrial controls