CRB455E Ceramic 455Khz Crystal Oscillator DIP-2

CRB455E Ceramic 455kHz Resonator DIP-2 is an exceptionally reliable, solid-state timing component engineered to establish stable, low-frequency oscillation inside a variety of consumer electronics. Operating fundamentally like a quartz crystal but utilizing a robust piezoelectric ceramic material, this resonator delivers a precise 455kHz clock signal while enduring harsher mechanical shocks and vibrations. Consequently, manufacturers predominantly select this specific component for integration into television remote controls, wired telephones, and automated toys. This widely adopted 2-pin resonator requires two external load capacitors to function, therefore giving the designer total freedom to fine-tune the startup oscillation characteristics. Furthermore, its classic through-hole DIP-2 packaging makes replacement and prototyping incredibly straightforward on virtually any printed circuit board or solderless breadboard. Additionally, featuring an impressively broad operating temperature range, this timing device guarantees your microcontrollers and radio decoders will remain accurately synchronized under demanding thermal conditions.

Key Features:

• High Shock Resistance: The robust internal ceramic structure effortlessly absorbs physical impacts that would easily shatter traditional, fragile quartz crystals.
• Consistent 455kHz Output: Delivers a highly stable, low-frequency clock signal absolutely essential for standard IR remote protocols and AM radio intermediate frequency (IF) stages.
• DIP-2 Packaging: The standard 5mm pin spacing is universally compatible with standard 0.1-inch breadboards and standard through-hole PCB manufacturing.
• Fast Startup Time: The inherently high activity level of the ceramic material allows the oscillation to begin almost instantly upon power-up, consequently improving device responsiveness.
• Low Overall Cost: Serving as a highly economical alternative to quartz, it dramatically lowers the total bill of materials for mass-produced consumer goods.

Technical Specifications:

• Nominal Frequency (F_osc): 455 kHz
• Frequency Tolerance: ± 2.0 kHz (Typical)
• Resonant Impedance (R_o): ≤ 20 Ω
• Load Capacitance (C_o): 285 pF (± 20%, requires external matching load caps)
• Maximum Input Voltage: 15 Vp-p (50 VDC Max rating)
• Operating Temperature Range: −20°C to +80°C

Mechanical Specifications:

• Package Style: DIP-2 (Dual In-line Package, 2-pin Radial)
• Housing Material: Molded, flame-retardant epoxy resin coated solid ceramic
• Lead Material: Tin-plated copper wire for optimal wave soldering
• Mounting Type: PCB Through-Hole Configuration
• Weight: ≈ 0.3 grams

Dimensions:

• Body Length / Width (W): ≈ 7.0 mm (Max)
• Body Thickness (T): ≈ 3.0 mm (Max)
• Body Height (H): ≈ 7.3 mm (Max above board)
• Lead Pitch (S): ≈ 5.0 mm
• Lead Length (L): ≥ 7.0 mm

Pinout and Wiring:

• Pin 1 (Non-Polarized): Solder to the primary oscillator input pin (e.g., OSC1 or XTAL1) of your integrated circuit.
• Pin 2 (Non-Polarized): Solder to the secondary oscillator output pin (e.g., OSC2 or XTAL2) of your integrated circuit.
• Wiring Note: As a 2-pin resonator, this component has absolutely no electrical polarity. However, you must connect two external load capacitors (typically matching the IC requirements) from both Pin 1 and Pin 2 explicitly to ground to initiate normal oscillation.

Datasheet Reference:

• Download CRB455E Ceramic Resonator Specifications

Commonly Used in:

• Infrared Remote Controls: Generating the exact base frequency required to encode and transmit the 38kHz IR carrier signal pulses to televisions and air conditioners.
• AM Radio Receivers: Ensuring total stability in the critical 455kHz Intermediate Frequency (IF) mixing stages of standard AM broadcast radios.
• Voice Synthesizers: Providing the precise master clock timing required for early-generation digital speech and sound effect ICs.

Applications:

• Telephone Caller ID: Serving as the low-frequency heartbeat for the FSK decoders deployed inside landline telephone systems specifically.
• Motorcycle Alarm Remotes: Absorbing extreme engine vibrations while maintaining absolute transmit frequency lock in two-wheeler security keyfobs.
• Legacy Microcontrollers: Operating the primary instruction cycles of older 4-bit and 8-bit microprocessors where high-speed MHz clocks are entirely unnecessary consequently.

Equivalent Models:

• CSB455E: A functionally identical, direct drop-in equivalent produced by Murata and other major passive component manufacturers.
• ZTB455E: The widely recognized 3-pin variant that however features built-in load capacitors, utilizing the center pin as the direct ground connection.
• CRB455J: A nearly identical mechanical resonator boasting slightly tighter frequency tolerances for more demanding radio-frequency applications.

Package Includes:

• 1 x CRB455E Ceramic 455Khz Crystal Oscillator DIP-2