PIS-0385 LoRa Antenna Equivalent & Substitute Parts

Part Overview

The PIS-0385 is a multi-band LoRa whip antenna manufactured by Pi Supply, designed for ISM band applications across 433MHz, 470MHz, 868MHz, 915MHz, and 923MHz frequency bands. The antenna features a 3dBi gain rating with N Type connector termination and connector mount configuration. This part is currently listed as obsolete, making identification of functionally equivalent substitute components necessary for ongoing system design and procurement.

Substiute Parts

PIS-0385

Pi SupplyIn Stock: 898PIS-0385 Datasheet

Current PartRFQ

NBR-0040

Pi SupplyIn Stock: 1141NBR-0040 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIS-0385 is based on the following critical parameters that must align between the main part and substitute components:

Primary Substitution Criteria:

• Antenna Type: Whip, Straight configuration
• Termination: N Type connector
• Gain: 3dBi
• Applications: LoRa systems
• RF Family: General ISM band operation
• Frequency Coverage: Support for 923MHz and adjacent ISM bands

Secondary Compatibility Factors:

• Mounting interface compatibility (connector mount vs. bracket mount represents a mechanical interface difference)
• Frequency range coverage that encompasses the operational bands of the original part
• Moisture Sensitivity Level rating (MSL 1 indicates no moisture sensitivity constraints)

The NBR-0040 substitute part maintains the core electrical parameters (3dBi gain, N Type termination, LoRa application suitability) and operates within a frequency range (860MHz ~ 930MHz) that encompasses the 923MHz center frequency of the PIS-0385. The primary difference is the mounting interface change from connector mount to bracket mount, which represents a mechanical adaptation rather than an electrical incompatibility.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The NBR-0040 serves as a direct electrical substitute for the PIS-0385 in LoRa antenna applications. Both components share identical electrical characteristics (3dBi gain, N Type termination) and operate within overlapping ISM frequency bands suitable for 923MHz LoRa systems.

Product Status Consideration:

The PIS-0385 is classified as obsolete, while the NBR-0040 maintains active product status with confirmed inventory availability (1037 units). This status difference supports the use of NBR-0040 for new designs and ongoing procurement requirements.

Compliance Alignment:

Both parts carry identical export control classification (ECCN: EAR99) and moisture sensitivity ratings (MSL 1). The NBR-0040 includes RoHS3 compliance certification, providing additional regulatory alignment for applications subject to RoHS requirements.

Mechanical Interface Adaptation:

The transition from connector mount (PIS-0385) to bracket mount (NBR-0040) requires mechanical redesign of the antenna mounting structure. This is a system-level integration consideration rather than an electrical incompatibility. The N Type connector interface remains consistent, ensuring RF signal path compatibility.

Frequently Asked Questions (FAQ)

Q: Can the NBR-0040 directly replace the PIS-0385 without any modifications?

A: The NBR-0040 provides electrical equivalence for LoRa antenna functionality. However, the mounting interface differs: PIS-0385 uses connector mount while NBR-0040 uses bracket mount. RF signal compatibility is maintained through identical N Type termination. Mechanical mounting structure adaptation is required.

Q: What frequency bands does the NBR-0040 cover compared to the PIS-0385?

A: The PIS-0385 operates at discrete frequencies: 433MHz, 470MHz, 868MHz, 915MHz, and 923MHz. The NBR-0040 operates across a continuous range of 860MHz ~ 930MHz, which encompasses the 923MHz band and provides broader frequency coverage within the UHF ISM spectrum.

Q: Are there any compliance or certification differences between these parts?

A: Both parts share EAR99 export classification and MSL 1 moisture sensitivity rating. The NBR-0040 includes RoHS3 compliance certification, which the PIS-0385 specifications do not explicitly document. For applications requiring RoHS compliance, the NBR-0040 provides documented certification.

Q: Why is the PIS-0385 listed as obsolete?

A: Product obsolescence is determined by manufacturer lifecycle decisions. The NBR-0040 represents the current active equivalent from the same manufacturer (Pi Supply) with identical electrical performance characteristics.

Q: What is the impact of the different mounting types on system design?

A: Connector mount (PIS-0385) integrates the antenna directly via N Type connector interface. Bracket mount (NBR-0040) requires a separate mechanical bracket structure for installation. The RF signal path remains identical through the N Type connector. System integration requires mechanical redesign of the antenna mounting assembly.

Q: Are the gain and radiation characteristics identical between these antennas?

A: Both antennas specify 3dBi gain. Detailed radiation pattern data is not provided in the available specifications. For applications requiring specific radiation pattern characteristics, direct comparison of manufacturer datasheets is recommended.

Q: Can the NBR-0040 be used in all applications where the PIS-0385 was previously used?

A: Electrical and RF compatibility is established through identical gain, termination type, and overlapping frequency coverage. Mechanical compatibility depends on the mounting structure of the specific application. Systems using connector mount interfaces require mechanical adaptation to accommodate bracket mount configuration.