Molex 2084850001 Equivalent & Substitute Parts

Part Overview

The Molex 2084850001 is a 600–4000 MHz ceramic patch RF antenna designed for LTE applications. It operates across three frequency bands with center frequencies at 755.5 MHz, 2.2 GHz, and 4.65 GHz, delivering gains of 1.6 dBi, 4.7 dBi, and 3.6 dBi respectively. The antenna uses solder termination and surface mount technology with a maximum height of 3.00 mm. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	2084850001
Manufacturer	Molex
Frequency Range	617 MHz – 894 MHz, 1.71 GHz – 2.69 GHz, 3.3 GHz – 3.8 GHz
Center Frequencies	755.5 MHz, 2.2 GHz, 4.65 GHz
Antenna Type	Ceramic Patch
Number of Bands	3
Gain	1.6 dBi, 4.7 dBi, 3.6 dBi
Return Loss	–4 dB, –6 dB
Mounting Type	Surface Mount
Height (Max)	3.00 mm
Termination	Solder
Applications	LTE
RoHS Status	ROHS3 Compliant
Packaging	Tape & Reel (TR)

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 2084850001 is determined by the following parameters:

Frequency coverage that encompasses or exceeds the three operating bands (617–894 MHz, 1.71–2.69 GHz, 3.3–3.8 GHz)
Surface mount technology compatibility
Solder termination capability
Gain performance within acceptable operational ranges for LTE applications
RoHS3 compliance and MSL rating of 1 (Unlimited)
Physical form factor suitable for integration in existing designs

The two substitute parts listed below meet these criteria through overlapping frequency coverage and compatible mounting and termination methods.

Parameter Comparison

Parameter	Molex 2084850001	Taoglas PCS.50.A	Quectel YC0018CA
Manufacturer	Molex	Taoglas Limited	Quectel
Frequency Range (MHz)	617–894, 1.71–2.69 GHz, 3.3–3.8 GHz	617–960, 1.56–1.602 GHz, 1.71–2.69 GHz, 3.3–3.8 GHz, 4.4–5.8 GHz	600–960, 1.43–1.71 GHz, 1.71–2.17 GHz, 2.3–2.7 GHz, 3.3–5 GHz, 5.1–6 GHz
Center Frequencies (MHz)	755.5, 2200, 3550	657.5, 722, 773, 840, 920, 1581, 2200, 3550, 4700, 5400	780, 1570, 1940, 2500, 4150, 5550
Antenna Type	Ceramic Patch	Flat Bar	Chip
Number of Bands	3	10	6
Gain (dBi)	1.6, 4.7, 3.6	–2.6, –2.1, –1.2, –0.8, –0.5, 2.81, 4.79, 4.71, 2.84, 3.99	Not specified
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Height (Max, mm)	3.00	1.60	3.00
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Bulk
Product Status	Discontinued	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) ratings, ensuring regulatory and moisture sensitivity compatibility with the original Molex 2084850001.

The Taoglas PCS.50.A provides extended frequency coverage into the 5G spectrum (4.4–5.8 GHz) and supports multi-standard applications including GPS, GNSS, Galileo, and Beidou. Its flat bar antenna type and reduced height (1.60 mm) offer design flexibility for space-constrained applications. The part is actively manufactured and available in Tape & Reel packaging.

The Quectel YC0018CA is a chip antenna with 5G-band coverage (5.1–6 GHz) and operates across six frequency bands. It matches the original height specification (3.00 mm) and maintains the same frequency coverage for LTE applications. This part is actively produced but supplied in bulk packaging rather than Tape & Reel format.

Selection between substitutes depends on application requirements: extended frequency coverage and reduced form factor favor the Taoglas part, while matching the original height and LTE-focused operation favor the Quectel part.

Frequently Asked Questions (FAQ)

Q: Can the Taoglas PCS.50.A replace the Molex 2084850001 in existing PCB designs?

A: The Taoglas PCS.50.A covers all three frequency bands of the original part and uses surface mount technology. However, its reduced height (1.60 mm vs. 3.00 mm) and different antenna type (flat bar vs. ceramic patch) may require PCB layout verification. Gain performance differs across frequency bands and should be evaluated against link budget requirements.

Q: What are the key differences between the Quectel YC0018CA and the Molex 2084850001?

A: Both parts share the same maximum height (3.00 mm) and surface mount technology. The Quectel part is a chip antenna versus the ceramic patch design of the original. The Quectel part extends coverage into 5G bands but is supplied in bulk packaging rather than Tape & Reel. Gain values are not specified for the Quectel part.

Q: Are all three parts compatible with LTE applications?

A: Yes. The Molex 2084850001 and Quectel YC0018CA are specified for LTE applications. The Taoglas PCS.50.A supports LTE alongside 3G, 4G, 5G, and GNSS standards, providing broader application compatibility.

Q: Does packaging format affect substitution eligibility?

A: Packaging format (Tape & Reel vs. Bulk) affects procurement and assembly processes but does not affect electrical or mechanical compatibility. The Taoglas part is available in Tape & Reel format matching the original; the Quectel part requires bulk handling.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three parts—the original Molex 2084850001 and both substitutes (Taoglas PCS.50.A and Quectel YC0018CA)—are ROHS3 compliant with MSL 1 (Unlimited) ratings.

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