@Scott-Sumner
LD1117A manufactured (most probably) by UTC
www.unisonic.com.tw

SOT-223
The full SMD marking of a device (on a Breadboard Dock what I've seen):
LD1117AG
33AQTJTE

where
LD1117AG : A 1A output current, G Green
33A : 3.3V output voltage, A pin code 1 GND, 2 Vout, 3 Vin

Absolute Maximum DC Input Voltage 18V - recommended max. 15V
Vout 3.234...3.366 @ Vin 4.75...10V, Iout 0...1000 mA
Dropout Voltage max. 1.30V @ Iout 1A
Built-in current limit and over temperature protection - of course.

Attention! I did not measure these data.
The voltage rating of the SMD capacitor at Vin pin (on the Breadboard Dock) can be less than 18V .
It's an analog regulator without heatsink - so you should watch also its thermal data / power dissipation if you increase the input voltage.