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Sagemcom F@ST 3686

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Sagemcom F@ST 3686 AC (v2.2)
Availability: now

FCC approval date: 02 January 2018
(Est.) release date: November 2016
Country of manuf.: China

Type: wireless router, cable modem


Power: 12 VDC, 2.5 A
Connector type: barrel

CPU1: Broadcom BCM3384ZU (1.5 GHz, 2 cores)
FLA1: 128 MiB
134,217,728 B
1,048,576 Kib
131,072 KiB
1,024 Mib
0.125 GiB
(Macronix MX30LF1G18AC-XKI)
RAM1: 256 MiB
268,435,456 B
2,097,152 Kib
262,144 KiB
2,048 Mib
0.25 GiB
(Samsung K4B2G1646F-BCMA)

Expansion IFs: USB 2.0
USB ports: 1
Serial: yes

WI1 chip1: Broadcom BCM4360
WI1 802dot11 protocols: an+ac
WI1 MIMO config: 3x3:3
WI1 antenna connector: U.FL
WI2 chip1: Broadcom BCM43217
WI2 802dot11 protocols: bgn
WI2 MIMO config: 2x2:2
WI2 antenna connector: U.FL

ETH chip1: Broadcom BCM3384ZU
Switch: Broadcom BCM53134S
LAN speed: 10/100/1000
LAN ports: 4


Additional chips
5GHz Front End Module;Skyworks;SKY85712-21;SKY21, 85712, 711WB;3;
Wideband Tuner;Broadcom;BCM3184;P30, 3184LG, TE1716, 046;1;
Wideband Amplifier;NXP;BGU7045;;1;
Dual Channel Ringing SLIC;Zarlink;Le9540;9540DUQC, J A (e3), 1706MBG;1;

Flags: DOCSIS 3.0, DFS (master)

Default SSID: sc-XXXX, sc-XXXX-5G
Default IP address:
the IP is used by 706 additional devices
of which 0 are Sagemcom devices
Default login user: admin
Default login password: admin
admin:admin credentials used by 1162 additional devices
of which 2 are Sagemcom devices

802dot11 OUI: 00:19:70 (2 E, 8 W, 2011)
Ethernet OUI: 00:19:70 (2 E, 8 W, 2011)

For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.

802.11ac DOCSIS 3.0 Cable Gateway

Product page (AC)  • Product page (RU)

"FAST3686 SFR_REV.04" is silkscreened on the board in the FCC photos.

  • DOCSIS 3.0 24x8 channels

Forum threads[edit]

CPU: Broadcom BCM3384 - DOCSIS 3.0 SoC (FBC/DECT)
WLAN 5GHz: Broadcom BCM4360 - 3T3R 802.11an/ac
WLAN 2.4GHz: Broadcom BCM43217 - 2T2R 802.11bgn

See also[edit]