1. SAW Filters (Main Focus - Multiple Types)

️· General Characteristics: Used for TV/VCR, Digital Broadcasting (IF), and Dual-Type applications.
️· Product Series & Variations:
- SAFHM Series: Used for US DTV IF applications.
- SAFJB Series: Used for DAB IF.
- SAWKE Series: Used for applications where both picture and sound frequencies are required (e.g. 58.75 MHz picture channel).
- SAFHM44M0WTHZL0B03: US DTV IF, 19.5 max insertion loss, 5.8 typical 3dB bandwidth, 6.6 typ. 30dB bandwidth. 21 max. attenuation at 47.25MHz.
- SAFHM44M0WTJZL0B03: US DTV IF, similar specs to above, but 24 max. attenuation at 47.25MHz.
️· Specifications (Typical Values – vary by specific model):
- Nominal Center Frequency (fo): Varies widely (e.g., 38.912 MHz, 44.0 MHz, 58.75 MHz)
- 3dB Bandwidth: Can be narrow or broad (e.g. 1.4 MHz, 5.6 MHz, 5.8 MHz)
- Insertion Loss: Typically < 20dB, can be as low as 8dB
- Picture Carrier Attenuation: Often around 40dB.
- Chroma Carrier Attenuation: Varies.
- Sound Carrier Attenuation: Varies
- Spurious Attenuation: Often around 30dB or higher (e.g., 21 max. at 47.25MHz)
- Input/Output Impedance: Typically 50 ohms.

2. BGS Filters

️· Applications: Primarily for Audio Visual Equipment.
️· Specifications:
- Center Frequency (fo): 25 MHz ± 60 kHz
- 3dB Bandwidth: within 220 ± 50 kHz
- Insertion Loss: 5 dB max.
- Spurious Attenuation: 30 dB min.
- Input/Output Impedance: 50 ohms
- Area of Spurious Attenuation: Range: 23MHz to (fo-400kHz)
️· Physical Dimensions (Typical):
- Width: 7.0 max.
- Thickness: 5.0 max.
- Height: 8.0 max.
- Length of Terminal: 5.0 ± 1.0 mm
️· Marking: F25.0CA

3. MKFGA Filters

️· Applications: Audio Visual Equipment
️· Specifications
- Center Frequency (fo): 25 MHz ± 60 kHz
️· Marking: F25.0CA

SUMMARY TABLE

Feature	SAW Filters (General)	BGS Filters	MKFGA Filters
Application	TV/VCR, Digital Broadcast	Audio/Visual	Audio/Visual
Center Frequency	Varies (e.g., 38.912MHz, 44MHz)	25 MHz ± 60 kHz	25 MHz ± 60 kHz
Bandwidth (3dB)	Varies (1.4-5.8 MHz)	within 220 ± 50 kHz	within 220 ± 50 kHz
Insertion Loss	< 20dB	5 dB max	5 dB max
Impedance	50 ohms	50 ohms	50 ohms
Key Feature	Multiple series for varied applications	Compact design, spurious attenuation	Compact design, spurious attenuation

Important Notes:

️· Variability: The provided text mentions *typical* or *maximum* values. These specs vary significantly depending on the *specific model number* of the filter.
️· Part Numbers: The document is heavily reliant on part numbers for accurate specification lookup.
️· Disclaimer: These are only the specifications mentioned in the provided text. The full datasheet for each product would have much more detail.