PCTEL 3910D-2M GPS Magnetic Antenna Equivalent & Substitute Parts

Part Overview

The PCTEL 3910D-2M is a 1.575GHz GPS module RF antenna with magnetic mounting, designed for navigation applications operating in the UHF frequency band (1GHz ~ 2GHz). This antenna features a 2-meter cable, integrated LNA and filter, SMA male termination, and IP67 ingress protection. The 3910D-2M is classified as obsolete, necessitating identification of active equivalent parts to maintain system compatibility and ensure continued component availability for new designs and field replacements.

Substiute Parts

3910D-2M

PCTEL, Inc.In Stock: 11073910D-2M Datasheet

Current PartRFQ

3917D

PCTEL, Inc.In Stock: 8333917D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete PCTEL 3910D-2M is determined by strict equivalence across the following critical parameters:

Frequency Compatibility: Center frequency of 1.575GHz with operating range 1.565GHz ~ 1.585GHz must be maintained for GPS signal reception.

Antenna Configuration: Module-type antenna with single-band operation and magnetic mounting ensures mechanical and electrical compatibility with existing installations.

Electrical Interface: SMA male termination provides direct connector compatibility without adapter requirements.

Environmental Rating: IP67 ingress protection maintains sealed operation in outdoor and harsh environments.

Physical Dimensions: Maximum height of 0.535" (13.60mm) ensures form-factor compatibility with existing enclosures and mounting structures.

Integrated Features: Presence of LNA (Low Noise Amplifier) and filter components must be retained for signal conditioning and noise performance.

The PCTEL 3917D meets all these substitution criteria while offering active product status and continued manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

The PCTEL 3917D is the direct active equivalent for the obsolete 3910D-2M GPS magnetic antenna. Both parts maintain identical electrical and mechanical specifications across all critical substitution parameters: center frequency, operating bandwidth, antenna type, connector interface, environmental protection rating, and physical dimensions.

The 3917D offers the following advantages for new designs and field replacements:

Product Status: Active product status ensures ongoing manufacturer support, availability, and technical documentation.

Regulatory Compliance: RoHS compliance certification confirms adherence to current environmental and hazardous substance restrictions.

Extended Cable Length: The 3m cable on the 3917D provides increased installation flexibility compared to the 2m cable on the 3910D-2M, accommodating longer routing distances without additional connectors or splitters.

Expanded Application Support: GNSS capability in addition to GPS extends operational compatibility with modern multi-constellation positioning systems.

The 3917D substitution requires no circuit modifications, recalibration, or system redesign when replacing the 3910D-2M in existing installations.

Frequently Asked Questions (FAQ)

Q: Can the PCTEL 3917D directly replace the 3910D-2M without modifications?

A: Yes. The 3917D is electrically and mechanically equivalent across all critical parameters: frequency band, gain characteristics, SMA male termination, magnetic mounting, IP67 rating, and physical dimensions. Direct substitution is supported without circuit changes or recalibration.

Q: What is the difference between the cable lengths on these two antennas?

A: The 3910D-2M includes a 2-meter cable, while the 3917D includes a 3-meter cable. The extended cable length on the 3917D accommodates installations requiring greater distance between the antenna and receiver without additional connectors or signal degradation.

Q: Are there any compliance differences between the 3910D-2M and 3917D?

A: The 3917D carries RoHS compliance certification, confirming conformance to current environmental and hazardous substance restrictions. The 3910D-2M compliance status is not specified in available documentation. Both parts share identical ECCN and HTSUS classifications.

Q: Does the 3917D support GNSS in addition to GPS?

A: Yes. The 3917D is specified for both GNSS and GPS applications, providing compatibility with multi-constellation positioning systems. The 3910D-2M is specified for GPS applications only. This expanded capability does not affect GPS-only system compatibility.

Q: What is the inventory status for these parts?

A: The 3910D-2M is obsolete with 1085 units in stock. The 3917D is an active product with 749 units in stock. For new designs and long-term availability, the 3917D is the recommended selection.

Q: Are the gain specifications identical between these antennas?

A: Yes. Both antennas provide gain specifications of -2dBic and 3dBic. The order of specification differs in documentation but represents the same performance characteristics.