Diodes Incorporated AP7313-33SRG-7

The AP7313 integrates a band-gap reference, error amplifier, pass element, current limit, and thermal shutdown. It supplies up to 150 mA for small local rails. The 3.3 V option operates from a 2 V to 6 V input where sufficient headroom is available for regulation.

The manufacturer lists this order-code pattern as SOT23R, Green, 3,000 units per 7-inch reel. Verify current lifecycle and any product-change notices against the exact orderable before design release.

• Recommended input supply: 2 V to 6 V; 7 V absolute-maximum input is a stress rating.
• Output accuracy: ±2% at 30 mA over −40°C to +85°C, under specified test conditions.
• 150 mV typical and 300 mV maximum dropout at 150 mA; these figures apply to output options above 1.8 V.
• 65 dB typical PSRR at 100 Hz and 80 µs typical startup under the manufacturer's stated conditions.
• Stable with a 1 µF ceramic output capacitor; use at least 1 µF input bypass.

The SR order code specifies the reversed SOT23R pin arrangement. The catalog describes the three-lead body as TO-236-3, SC-59, SOT-23-3; its registered TO-236-3 illustration is shown below. Confirm land pattern and orientation against the manufacturer package drawing.

Do not substitute the SA/SOT23 pin version without checking the board connections: its input and ground pins are interchanged.

Pin numbers are from the manufacturer SOT23R/SR top-view table; SA/SOT23 has a different pinout.

Match output voltage, 150 mA rating, input headroom, dropout, capacitor stability, thermal behavior, and the SR pinout (1-GND, 2-OUT, 3-IN). The AP7313 SA package uses 1-IN, 2-OUT, 3-GND and is not a pin-for-pin substitute. No internal alternative is linked without exact API verification.

Diodes order coding identifies 33 as the 3.3 V option, SR as SOT23R, G as Green, and -7 as 7-inch tape and reel. The datasheet's marking table lists SJ for AP7313-33SR. Consult the official AP7313 datasheet and manufacturer product page for controlled specifications and orderable lifecycle notices.

Verify the full AP7313-33SRG-7 reel label, SJ identification marking, three-pin package, lot traceability, and Green/RoHS records. Check orientation, solder joints, capacitor placement, input transients, and thermal margin during assembly qualification.

This summary does not replace manufacturer-controlled documentation. Confirm current datasheet revision, exact orderable lifecycle and PCNs, startup and transient performance, VIN headroom, thermal limits, and the reversed SR pin orientation before release. Absolute-maximum ratings do not define normal operation.