Model/Specs, DigiKey CA Link	EG915N-EA (original model)	BG95M3 Series	EG915Q-NA Series	EG916Q-GL
$/ct (DigiKey)	~$34.52 CAD	~$50.54 CAD	~$54.23 CAD	~$63.99 CAD
Stock (DigiKey)	~200	~1,236	~236	~37
Dimensions	19.9x23.6, 2.4mm	19.9x23.6, 2.2mm	19.9x23.6, 2.4mm	22.5x26.5, 2.4mm
Pin-to-pin compatible?	-	Kind of, footprint includes an arc-ed pad	Yes. (need confirmation from more eyes)	Yes (with few changes, listed below).
LTE Bands	LTE-FDD: B1 / 3 / 7 / 8 / 20 / 28 Spec Sheet	Cat M1: B1 / 2 / 3 / 4 / 5 / 8 / 12 / 13 / 18 / 19 / 20 / 25 / 26 / 27 / 28 / 66 / 85 Cat NB2: The above and 71, without 26 and 27 Spec Sheet	LTE-FDD: B2 / 4 / 5 / 12 / 13 / 66 *EG915Q-AF model has bands 14 and 71 on top; however, can’t find it on DigiKey. Spec Sheet	LTE-FDD: B1 / 2/ 3/ 4/ 5/ 7/ 8/ 12/ 13/ 18/ 19/ 20/ 25/ 26/ 28/ 66 LTE-TDD: B34 / 38/ 39/ 40/ 41 Spec Sheet
# of SIM Interfaces	2	1	2	2
Specs Screenshot
Notes				Due to this being several mm bigger than the EG915N, the existing placement and routing would have to be heavily adjusted.

Notable pinout differences between EG915N-EA and EG91xQ series devices:

GNSS debug pins on Q model (109, 110)
AUX_RTS and AUX_CTS removed on Q model (now RESERVED pins)
USIM2 no longer has a DET pin on Q model (no card detect)
Q model uses previously RESERVED pins for CAM SPI functionality (95, 78, 97, 98, 115, 93, 94)
Q model has backup power pins for the GNSS antenna (117, 118, 112)
Pins for SLEEP and WAKEUP have been renamed (among others)
MIC-related pins have been removed (now RESERVED pins: 119, 121, 122, 126, 120)

EG915Q-NA selected. See chat in #rpi-interface-rev-c for more.

Model is available on DigiKey Canada
2 SIM connections, USB 2.0
Has bands 12 and 13, the low frequency bands best for long-range communications
Missing 7 and 71 but these high-speed bands matter less for the purpose of the device
Exact same footprint as EG915N-EA (routing won’t have to be redone)

Layout

Collection of hardware design guideline excerpts from various component datasheets.

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