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Raspberry Pi 3 Model B+ specs, pinout & datasheets

Single-board computer · Raspberry Pi · Released March 2018

The final Pi 3: a 1.4 GHz BCM2837B0 with a heat spreader, dual-band Wi-Fi, faster Ethernet and Power over Ethernet support.

CPU
4 × Cortex-A53 (ARMv8, 64-bit)
Clock
1.4 GHz
RAM
1 GB
Storage
microSD card
Wireless
2.4/5 GHz 802.11ac Wi-Fi; Bluetooth 4.2 and BLE
I/O voltage
3.3 V
Released
March 2018
Status
In production

Draft entry: these specs were compiled from the linked sources and are waiting for a second check. Spotted a mistake? Use the form at the end of the page.

Specifications

14 specs
Chip / SoC
Broadcom BCM2837B0[2]
CPU
4 × Cortex-A53 (ARMv8, 64-bit)[3]
Clock
1.4 GHz[3]
RAM
1 GB[2]
Storage
microSD card[2]
GPIO
40-pin header[2]
I/O voltage
3.3 V[4]
Input voltage
5 V via micro-USB[2]
Wireless
2.4/5 GHz 802.11ac Wi-Fi; Bluetooth 4.2 and BLE[2]
Ethernet
Up to 300 Mb/s, with Power over Ethernet support[2]
USB
4 × USB 2.0[2]
Video
HDMI; composite on the 3.5 mm AV jack; DSI display connector[2]
Expansion
CSI camera connector[2]
Launch price
US$35[8]

Can I still use it?

1 platforms
Raspberry Pi OS
Supported[10]32-bit and 64-bit images.

As published by each project, checked weekly. A platform not listed has no published information here, which is not the same as no support.

Datasheets and documents

3 documents

Pinout

40 pins
Raspberry Pi 40-pin GPIO header pinout diagramJ8 (40-pin GPIO)13V325V3GPIO245V5GPIO36GND7GPIO48GPIO149GND10GPIO1511GPIO1712GPIO1813GPIO2714GND15GPIO2216GPIO23173V318GPIO2419GPIO1020GND21GPIO922GPIO2523GPIO1124GPIO825GND26GPIO727ID_SD28ID_SC29GPIO530GND31GPIO632GPIO1233GPIO1334GND35GPIO1936GPIO1637GPIO2638GPIO2039GND40GPIO21
Raspberry Pi 40-pin GPIO header[4]
  • Power
  • Ground
  • GPIO
  • Special
  • Not connected
Pin table (40 pins)
J8 (40-pin GPIO)
PinLabelKindFunctions
13V3Power
25VPower
3GPIO2GPIOI2C1 SDA
45VPower
5GPIO3GPIOI2C1 SCL
6GNDGround
7GPIO4GPIOGPCLK0
8GPIO14GPIOUART TXD
9GNDGround
10GPIO15GPIOUART RXD
11GPIO17GPIO
12GPIO18GPIOPCM CLK, PWM0
13GPIO27GPIO
14GNDGround
15GPIO22GPIO
16GPIO23GPIO
173V3Power
18GPIO24GPIO
19GPIO10GPIOSPI0 MOSI
20GNDGround
21GPIO9GPIOSPI0 MISO
22GPIO25GPIO
23GPIO11GPIOSPI0 SCLK
24GPIO8GPIOSPI0 CE0
25GNDGround
26GPIO7GPIOSPI0 CE1
27ID_SDSpecialGPIO0, HAT EEPROM I2C SDA
28ID_SCSpecialGPIO1, HAT EEPROM I2C SCL
29GPIO5GPIO
30GNDGround
31GPIO6GPIO
32GPIO12GPIOPWM0
33GPIO13GPIOPWM1
34GNDGround
35GPIO19GPIOPCM FS, SPI1 MISO
36GPIO16GPIOSPI1 CE2
37GPIO26GPIO
38GPIO20GPIOPCM DIN, SPI1 MOSI
39GNDGround
40GPIO21GPIOPCM DOUT, SPI1 SCLK

Gotchas

4 known issues
  • Gigabit port, USB 2.0 speed. The Ethernet port is gigabit-capable but sits behind USB 2.0, so real throughput tops out around 300 Mb/s.[2]
  • Soft thermal limit. At 60 °C the clock drops from 1.4 GHz to 1.2 GHz to stretch the time before the 85 °C hard limit; a heatsink keeps it at full speed longer.[7]
  • 3.3 V only. The GPIO pins are 3.3 V. Do not connect 5 V signals or components to them.[4]
  • Little current per pin. Each GPIO pin can supply up to about 16 mA and all pins together about 50 mA; drive motors and other loads through a transistor or driver board.[5]

What changed

From the specs

Since the Raspberry Pi 3 Model B

SpecRaspberry Pi 3 Model BRaspberry Pi 3 Model B+
Chip / SoCBroadcom BCM2837 (BCM2837B0 in boards built from January 2019; board revision unchanged at 1.2)Broadcom BCM2837B0
Clock1.2 GHz1.4 GHz
Wireless2.4 GHz 802.11n Wi-Fi; Bluetooth 4.1 and BLE2.4/5 GHz 802.11ac Wi-Fi; Bluetooth 4.2 and BLE
Ethernet100 Mb/sUp to 300 Mb/s, with Power over Ethernet support

Next came the Raspberry Pi 4 Model B

SpecRaspberry Pi 3 Model B+Raspberry Pi 4 Model B
Chip / SoCBroadcom BCM2837B0Broadcom BCM2711
CPU4 × Cortex-A53 (ARMv8, 64-bit)4 × Cortex-A72 (ARMv8, 64-bit)
Clock1.4 GHz1.5 GHz at launch; 1.8 GHz in the current product brief
RAM1 GB1, 2, 3, 4 or 8 GB LPDDR4
StoragemicroSD cardmicroSD card; USB boot
GPU—VideoCore VI
Input voltage5 V via micro-USB5 V, 3 A via USB-C
Wireless2.4/5 GHz 802.11ac Wi-Fi; Bluetooth 4.2 and BLE2.4/5 GHz 802.11ac Wi-Fi; Bluetooth 5 and BLE
EthernetUp to 300 Mb/s, with Power over Ethernet supportGigabit; PoE+ with a separate PoE+ HAT
USB4 × USB 2.02 × USB 3.0, 2 × USB 2.0
VideoHDMI; composite on the 3.5 mm AV jack; DSI display connector2 × micro-HDMI; composite on the 3.5 mm AV jack; DSI display connector
Launch priceUS$35From US$35 (1 GB)

Power and battery

3 facts
Recommended supply
2.5 A[5]
USB peripheral budget
1.2 A[5]
Typical bare-board draw
500 mA[5]

History and use today

Editorial

History

Launched on Pi Day, 14 March 2018, the 3B+ refined the Pi 3 with a faster, better-cooled SoC, dual-band wireless and PoE pins, while keeping the price and layout.[8]

Still useful for

Still in production and still a good all-rounder where the Pi 4's extra heat and power draw are not wanted.

Sources

10 sources
  1. Raspberry Pi hardware, Raspberry Pi documentation
  2. Raspberry Pi hardware introduction (documentation source)
  3. Processors, Raspberry Pi documentation
  4. GPIO and the 40-pin header, Raspberry Pi documentation (source)
  5. Power supplies, Raspberry Pi documentation (source)
  6. Raspberry Pi OS, Raspberry Pi documentation
  7. Frequency management and thermal control, Raspberry Pi documentation (source)
  8. Raspberry Pi 3 Model B+ on sale now at $35, Raspberry Pi news
  9. Raspberry Pi 3 Model B+ product brief
  10. Raspberry Pi OS downloads, Raspberry Pi

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