ZTS Low PIM Attenuators from 25W to 400W, Covering 380MHz to 6GHz

Passive intermodulation, commonly known as PIM, can increase the noise floor and reduce receiver sensitivity in multi-carrier wireless systems. This makes low PIM components especially important in distributed antenna systems (DAS), base stations, indoor coverage systems, private mobile networks and 4G/5G infrastructure.

ZTS Technologies supplies a broad range of low PIM coaxial attenuators for signal-level adjustment, power reduction and RF system protection. Available solutions cover power ratings from 25W to 400W and selected frequency bands from 380MHz to 6GHz.

ZTS Low PIM Attenuator Range

The current ZTS low PIM attenuator portfolio includes the following main configurations:

Depending on the selected frequency range and attenuation value, typical VSWR is between 1.25 and 1.40.

Low PIM performance can be specified as low as -161 dBc for third-order intermodulation, tested with two +43 dBm carriers. Type N and 4.3-10 connector configurations are available to support common wireless infrastructure and DAS installations.

Custom frequency ranges, attenuation values, power ratings and connector configurations can also be evaluated.

698-2700 MHz Low PIM Attenuators for DAS Applications

The 698-2700 MHz frequency range remains one of the most widely used bands for indoor and outdoor DAS, mobile communication infrastructure and multi-band RF distribution systems.

ZTS offers 25W, 50W, 100W and 200W low PIM attenuators across this band. Standard attenuation values include 3, 5, 6, 7, 8, 10, 12, 15, 20 and 30 dB.

These products are suitable for customers looking for a Type N or 4.3-10 low PIM attenuator for LTE, 4G, 5G and distributed antenna system applications.

Wideband Low PIM Attenuators Up to 6GHz

For systems requiring wider frequency coverage, ZTS offers 555-6000 MHz low PIM attenuators with power ratings from 25W to 400W.

This wideband series can support multiple mobile communication bands, selected 5G bands and other RF infrastructure applications within one attenuator platform. It is also useful when customers want to reduce the number of different band-specific components used in their system.

Higher-power 200W and 400W configurations are also available over 400-6000 MHz.

Alternatives to International Low PIM Attenuator Brands

ZTS low PIM attenuators may be evaluated as alternatives to several established international product families. The following models are useful cross-reference examples.

ZTS can additionally offer lower and higher power versions, including 25W, 50W, 200W, 300W and 400W configurations.

Microlab FZ Series

Microlab FZ-series low PIM attenuators include models such as:

· FZ-10E: 10 dB, 4.3-10

· FZ-15E: 15 dB, 4.3-10

· FZ-15N: 15 dB, Type N

· FZ-30N: 30 dB, Type N

These models generally cover approximately 617-2700 MHz with power ratings around 100W.

ZTS 555-6000 MHz, 100W low PIM attenuators can be evaluated as wideband alternatives for these applications, with corresponding 10, 15 and 30 dB attenuation options and Type N or 4.3-10 connector configurations.

SPINNER Low PIM Attenuators

Several earlier SPINNER low PIM attenuator models covered approximately 694-2700 MHz at 80W, including:

· SPINNER 745122: 6 dB

· SPINNER 745125: 10 dB

· SPINNER 745127: 15 dB

· SPINNER 745128: 20 dB

· SPINNER 745129: 30 dB

For replacement projects, ZTS can offer 100W low PIM attenuators covering 555-6000 MHz with matching 6, 10, 15, 20 and 30 dB attenuation values.

The wider ZTS frequency range and higher power rating may provide additional design margin, subject to confirmation of connector gender, mounting dimensions and environmental requirements.

Important Cross-Reference Note

A similar frequency range and power rating do not automatically make two low PIM attenuators mechanically interchangeable.

Before confirming a replacement, ZTS recommends comparing:

· Required operating frequency

· Average and peak RF power

· Attenuation value and accuracy

· PIM level and PIM test frequency

· Connector type and connector gender

· VSWR

· DC continuity or DC blocking requirements

· Mechanical dimensions and mounting method

· Indoor or outdoor environmental requirements

Customers can send us an existing part number or datasheet, and our engineering team will recommend the closest ZTS alternative.

Why Choose ZTS Low PIM Attenuators?

ZTS provides more than standard 50W and 100W attenuators. Our available power range extends from 25W to 400W, helping customers select a more appropriate product for both low-power DAS branches and higher-power RF infrastructure.

Key advantages include:

· Selected frequency coverage from 380MHz to 6GHz

· Power ratings from 25W to 400W

· Low PIM performance down to -161 dBc

· Type N and 4.3-10 connector options

· Common attenuation values from 3 to 30 dB

· Custom frequency, power and attenuation configurations

· OEM and private-label support

· Cross-reference support for international brands

Frequently Asked Questions

What is the maximum power available for a ZTS low PIM attenuator?

ZTS can provide low PIM attenuators with power ratings up to 400W in selected frequency bands.

Which frequency ranges are available?

Standard ranges include 698-2700 MHz, 698-4200 MHz, 380-3800 MHz, 400-6000 MHz and 555-6000 MHz.

Which connectors can ZTS provide?

The main connector options are Type N and 4.3-10. Other connector arrangements may be evaluated for custom projects.

Can ZTS replace Microlab or SPINNER low PIM attenuators?

ZTS can provide technically comparable alternatives for many applications. However, the original datasheet or part number should be reviewed before confirming a direct replacement.

Contact ZTS for a Low PIM Attenuator Solution

If you are looking for a 698-2700 MHz low PIM attenuator, a 555-6000 MHz wideband attenuator or a high-power low PIM attenuator up to 400W, contact ZTS Technologies with your required frequency, power, attenuation value, PIM level and connector type.

You may also send us an existing Microlab, SPINNER or other manufacturer’s part number for cross-reference evaluation.