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SELECTION GUIDE

Micro SD Card Connector (Socket) Selection Guide

A microSD socket is chosen on 4 values: profile height, mechanism, durability class and whether it carries a card-detect switch. The KINGCONN microSD family publishes 19 models with profiles of 1.15mm, 1.28mm, 1.45mm, 1.5mm and 1.68mm, push-push, push-pull and hinge mechanisms, and 5,000 or 10,000 insertion cycles. Every value below comes from the engineering drawing published on the part page.

Profile height: the thinnest dimension wins

ProfileWhat is available at this heightTypical designs
1.15 mmthinnest: push-pull (no-push), fewest moving partsphones, modules, ultra-slim handhelds
1.28 mmboth push-push and push-pull availablegeneral modules and IoT boards
1.45 / 1.5 mmthe push-push mainstream bandindustrial, in-vehicle, POS
1.68 / 1.75 mmversions with an eject lever or reinforced shellfrequent user swaps, mechanical strength

In handheld and module designs the card socket usually sits on the most height-constrained board. Pick the lowest profile your reflow and card-insertion mechanics allow — but read the mechanism column first: the thinnest parts are push-pull, so choosing 1.15mm also chooses how the user removes the card.

Durability class: 5,000 or 10,000 cycles

Insertion/withdrawal durability is the parameter that separates consumer-grade from service-heavy applications. KINGCONN microSD connectors are rated at 5,000 or 10,000 insertion cycles depending on the model — specify the higher class when the card is an end-user-replaceable medium (dashcams, industrial data loggers, POS) rather than a factory-installed one.

Push-push mechanics and card detect

Push-push (insert to latch, push again to eject) is the dominant mechanism in this family: it needs no ejector lever clearance and gives the user a positive tactile latch. Models with a card-detect switch let firmware distinguish "no card" from "card failed" — a distinction your support team will thank you for, and one that has to be decided before layout because it changes the terminal count. A representative push-push model is 7MSDP-B0-2210, the part rendered in the 3D sequence on our homepage.

KINGCONN microSD sockets

10 of the 19 microSD models: push-push, push-pull, hinge and reverse types across the full height range.

Part numberHeight (mm)ContactsDurabilityCurrentWithstand VTemp. rangeDrawing
7TFCN-F0-01261.1590.5 A500 VAC/1MINUTE-40°C~+85°C7TFCN-F0-0126
7TFCN-F0-00181.281030000.5 A Max500V(AC) for 1 min-25°C~+65°C7TFCN-F0-0018
7MSDP-F0-00371.291110,000 CYCLES0.5A Max500V AC7MSDP-F0-0037
7MSDP-F0-00271.4550007MSDP-F0-0027
7MSDP-F0-00301.50.5 A500 VAC/1MINUTE-25°C~+85°C7MSDP-F0-0030
7MSDP-F0-00281.6885,0007MSDP-F0-0028

Contacts are phosphor bronze, housings rated UL94V-0, RoHS compliant. Every published specification value links back to its source engineering drawing on the part page.

Shortlist and RFQ

The Micro SD (T-Flash) series page lists all 19 models with their specifications; for the pinout and the card generations see SD card socket types and microSD generations. Model cards pre-fill an RFQ email, or reach service@kingconn.com.tw with your height limit and duty cycle and we will shortlist for you.

FAQ

How do I choose a microSD socket?
Fix the profile height first (the 19-model KINGCONN family covers 1.15, 1.28, 1.45, 1.5 and 1.68mm), then the mechanism (push-push, push-pull or hinge), then the durability class (5,000 or 10,000 cycles) and whether you need a card-detect switch. Height is usually the one value you cannot negotiate.
How many pins does a microSD socket have?
The microSD card itself has 8 contacts. Socket terminal counts run from 8 to 11: the extras belong to a card-detect or write-protect switch that the card never touches. Firmware that must tell "no card" from "card failed" needs that switch.
Push-push or push-pull (no-push)?
Push-push latches on insertion and ejects on a second push, giving the user a positive feel at the cost of a spring and slider. Push-pull is shorter, has fewer moving parts and cannot be knocked out. Push-push for user-swapped media, push-pull for factory-fitted cards.
Is a TF socket the same as a microSD socket?
Yes. TF (TransFlash) was the original name before the SD Association adopted the format; a part described as a TF socket, TF port or T-Flash connector accepts a microSD card. KINGCONN uses both names inside the same series.
Can a microSD socket be mounted on the back of the board?
Yes, with a reverse-type part such as 7MSDP-AA-1110, where the contact side and card orientation are both flipped. Flipping a standard part instead leaves the card insertion direction fighting the panel opening.
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