FR4 on-metal tags

FR4 on-metal tag 5 mm dia. (MFR-D5-T)

Short answer

MFR-D5-T is an FR4 on-metal tag, 5 mm diameter, 3 mm high, for metal surfaces. The supplier states a read distance of up to 0.5 m (EIRP 4 W, on metal). The supplier states an operating range of -25 to +85 °C.

Size: 5 mm diameter, 3 mm high
Stated read distance: up to 0.5 m; Supplier-stated. EIRP 4 W, on metal
Operating: -25 to +85 °C; Supplier-stated
Memory: EPC 128 bit
Weight: about 0.5 g

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1.0At a glance

Shape and stated figures

MFR-D5-T, drawn from the stated size. Dimensions in millimeters.

Stated read distance

up to 0.5 m EIRP 4 W, on metal Supplier-stated
up to 0.1 m Handheld reader, ATID AT880, on metal Supplier-stated

Temperature

Storage temperature -30 to +110 °C Supplier-stated

Operating temperature -25 to +85 °C Supplier-stated

2.0Choosing

Choose the MFR-D5-T, or look elsewhere

In favor

Choose it when the available surface is small: at 5 mm diameter it is the smallest of the 19 FR4 on-metal tags in the family that state a size.

Against

Avoid it when you need more than 0.5 m of read distance: that is its stated figure (EIRP 4 W, on metal), and 17 of the 19 FR4 on-metal tags that state that footing state more, up to 6.5 m.
Avoid it when you want to fix it by screw, rivet or glue: the record lists adhesive tape only.
Avoid it when you need user memory: the record states EPC memory only.
Avoid it where the tag runs hotter than 85 °C in service: that is the stated operating maximum, and the higher storage figure of 110 °C is not an operating figure.

3.0Specifications

Specifications

Identity
Model code	MFR-D5-T
Body material	FR4
Color	black
Mounting	Adhesive tape
Marking and encoding options	Pre-encoding, Surface painting

Dimensions and weight
Diameter and height	5 mm diameter, 3 mm high
Weight	about 0.5 g

Radio
Chip options	NXP UCODE 8
Frequency, FCC (US)	902 to 928 MHz
Frequency, ETSI (EU, UK)	865 to 868 MHz
Frequency, China	Band not stated
Memory	EPC 128 bit
Read and write	EPC and user memory
Air interface	EPC Class 1 Gen 2; ISO 18000-6C
Power source	Passive, no battery
Read distance, up to	0.5 m Supplier-stated EIRP 4 W, on metal
Read distance, up to	0.1 m Supplier-stated Handheld reader, ATID AT880, on metal
Data retention	50 years Supplier-stated

Environment and durability
Storage temperature	-30 to +110 °C Supplier-stated
Operating temperature	-25 to +85 °C Supplier-stated
Storage humidity	5 to 95 % RH Supplier-stated
Drop test	1 m, 200 drops: passed Supplier-stated
Alcohol test	95 % alcohol: passed Supplier-stated
Gasoline test	Passed Supplier-stated
Thermal shock test	-40 to +150 °C, 7 cycles, 48 h Supplier-stated Test conditions, not a rating
Temperature cycle test	-40 to +120 °C, 7 cycles, 48 h Supplier-stated Test conditions, not a rating

Packaging and supply
Packaging	bubble bag, carton
Supply format	Single pieces

4.0Reading the figures

What the figures do and do not say

Next to its neighbors

MFR-D5-T comparisons below use supplier-stated records.

MFR-D5-T and MFR-9x4-T share a supplier-stated read ceiling of 0.5 m (EIRP 4 W, on metal).

MFR-D5-T's next larger catalog footprint is MFR-9x4-T (9.4 x 4.3 x 1.6 mm). MFR-D5-T to MFR-9x4-T: the 5 mm diameter round outline changes to 9.4 x 4.3 mm rectangular and height decreases by 1.4 mm. Chip selection changes from MFR-D5-T's NXP UCODE 8 to MFR-9x4-T's NXP UCODE 7m. Stated weight: MFR-D5-T about 0.5 g; MFR-9x4-T about 1 g.

Who states these figures

Every performance figure on this page is a supplier statement: read distance, wash life, temperature, tests, pressure and data retention. TagBrio has not tested them, and no test report, laboratory or standard is cited for them. A test envelope is a condition of a test, not a rating. Confirm each figure that matters to you on samples, on your own items and with your own reader.

5.0Mounting

How it is attached

General schematic of the method. It does not show this tag.

6.0Variants

Variants and chips

Frequency variants
Region	Band	Order suffix
FCC (US)	902 to 928 MHz	FCC
ETSI (EU, UK)	865 to 868 MHz	ETSI
China	Band not stated	Not stated

Chip facts published by the vendors for MFR-D5-T
Chip	Memory published by the vendor	Source
NXP UCODE 8	EPC 128 bit, no user memory	NXP UCODE 8 and UCODE 8m product page Read on October 1, 2026

7.0Compared

Consider these instead, and compare the neighbors

Models to consider instead of the MFR-D5-T
Model	Look at it when	What its record says
FR4 on-metal tag 10 x 5 mm MFR-10x5-T	You need a longer stated read distance	MFR-10x5-T is 10 x 5 x 3 mm, the smallest model of the family that states more. Under the same stated footing (EIRP 4 W, on metal) it states 1 m against 0.5 m.
FR4 on-metal tag 90 x 5 mm MFR-90x5-TF	Tape alone is not acceptable	MFR-90x5-TF lists adhesive tape, screw, rivet and glue and is 90 x 5 x 3 mm. Under the same stated footing (EIRP 4 W, on metal) it states 2 m against 0.5 m.
FR4 on-metal tag 10 mm dia. MFR-D10-T	You need user memory	MFR-D10-T states 496 bit of user memory and is 10 mm diameter, 3 mm high.
Plastic-housed on-metal tag 37 x 14 mm MHP-37x14-TF	The tag runs hotter than 85 °C in service	MHP-37x14-TF states an operating maximum of 115 °C and is 37 x 14 x 5.9 mm, in a different family. Under the same stated footing (EIRP 4 W, on metal) it states 3 m against 0.5 m.

MFR-D5-T next to the models closest to it in size
Specification	FR4 on-metal tag 5 mm dia. MFR-D5-T This model	FR4 on-metal tag 9.4 x 4.3 mm MFR-9x4-T	FR4 on-metal tag 10 x 5 mm MFR-10x5-T	FR4 on-metal tag 12 x 7 mm MFR-12x7-T
Diameter and height	5 mm diameter, 3 mm high	9.4 x 4.3 x 1.6 mm	10 x 5 x 3 mm	12 x 7 x 3 mm
Weight	about 0.5 g	about 1 g	about 1 g	about 1 g
Chip options	NXP UCODE 8	NXP UCODE 7m	NXP UCODE 8	NXP UCODE 8
Memory	EPC 128 bit	Not stated	EPC 128 bit	EPC 128 bit
Mounting	Adhesive tape	Adhesive tape	Adhesive tape	Adhesive tape
Operating temperature	-25 to +85 °C Supplier-stated	-25 to +85 °C Supplier-stated	-25 to +85 °C Supplier-stated	-25 to +85 °C Supplier-stated

8.0Questions

Questions about the MFR-D5-T

Answers quoted from the record

How far can the MFR-D5-T be read?

The supplier states up to 0.5 m (EIRP 4 W, on metal) and up to 0.1 m (ATID AT880 handheld, on metal). TagBrio has not tested either figure, so read a sample on your own part before you rely on them.

How is the MFR-D5-T attached?

The record lists adhesive tape. Confirm the fixing on your own material and surface before you order in volume.

What temperatures does the MFR-D5-T state?

The supplier states an operating range of -25 to +85 °C and a storage range of -30 to +110 °C. A storage range is not an operating range, and a test envelope is not a rating. Both are supplier-stated.

Which chip and memory does the MFR-D5-T list?

The record lists NXP UCODE 8. Memory: EPC 128 bit (supplier-stated).

Which frequency variants does the MFR-D5-T come in?

FCC at 902 to 928 MHz and ETSI at 865 to 868 MHz. The record also names China but states no band, so this page lists none. Say which region the tags will be read in when you ask for a quote.

Can the MFR-D5-T be encoded or marked?

The record lists pre-encoding and surface painting. Ask the team which combination is available for your order.

Test it on your own surface

Samples are handled per request. The team confirms availability and terms by email.

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