SD Card Socket Connector 4GB/s Top Mount Push-Pull Height 2.94mm
- Model
- SD 8.0 Card Connector（SD294-T6151-01）
Item specifics
- Product Height
- 2.94mm
- Usable Memory Card
- SD 8.0/SD 7.0/SD 4.0/SD 3.0 memory card
- Base Material
- LCP
- Terminals Material
- Phosphorous Bronze
- Shell Material
- Stainless Steel
Review
Description
A 1.10 mm pitch, 29-pin SD 8.0 memory card connector in a top-mount SMT, push-pull design. It accepts SD 8.0 / 7.0 / 4.0 / 3.0 cards with a peak transfer rate of about 4 GB/s — built for ultra-thin laptops, card readers, docking stations and digital cameras where thickness and read stability are both on the line. Engineer reply within 1 working day · RoHS compliant · Custom options available Nobody designs a product around an SD slot. Engineers design around battery life, enclosure thickness, drop tests and certification. The connector only becomes visible when it creates a problem. These are the four problems this 2.94 mm part is built to keep off your desk. A 2.94 mm mounted height with a 1.10 mm terminal pitch lets the socket sit lower and lay out denser — that budget goes back to the battery, not the card slot. Gold-plated terminals (≥0.025 µm) hold contact resistance to ≤30 mΩ with tight coplanarity control, keeping SD 8.0 signals stable through humidity and thermal cycling. An LCP insulator takes lead-free reflow without deformation; the stainless-steel shell keeps the frame flat; terminals are coplanarity-controlled to ±0.05 mm for stable placement. A reliable detect switch guarantees card detection, and the push-pull design has no ejector mechanism to jam or weaken — rated for 10,000 insertion cycles. A datasheet lists values. A specification explains what each value controls. Final tolerances, plating thickness and acceptance criteria are confirmed on the 2D drawing and datasheet. Connector failures are rarely dramatic. They are a few milliohms of drift, a lifted pad, a card that reads intermittently in a hot car. Same SD card, same 4 GB/s interface — the SD 8.0 family offers four height and mechanism combinations. Most sourcing mistakes are not a bad connector; they are the right connector in the wrong stack-up. Wherever an SD card is a user-accessible storage medium, retention and contact stability matter more than the connector's price. SD 8.0 uses a PCIe 4.0 interface with a peak transfer rate of about 4 GB/s — far above the 104 MB/s of SD 3.0 — making it ideal for 4K/8K video and high-speed burst photography. SD 8.0 sockets are backward compatible with SD 7.0 / 4.0 / 3.0 cards; the card opening is the same, but the pin definition and signal-integrity requirements are higher. Push-pull has no ejector mechanism: fewer parts, lower cost, nothing to jam, and the card is held by the stainless-steel shell — usually the more durable answer for fixed installations and industrial handhelds. Push-push gives press-to-eject convenience for consumer-facing devices, available at 2.98 mm and 3.58 mm in the SD 8.0 family. Yes. It is a top-mount SMT part with an LCP insulator and coplanarity-controlled terminals. Use a standard lead-free profile; the exact profile and acceptance criteria are confirmed in the datasheet and drawing. Send the part number and, if possible, the drawing. We compare pad layout, height, pitch and retention, then confirm whether the replacement is truly drop-in or needs a layout change. Sampling follows the review. Samples are free, sampling takes 7 days, and volume production is 7–15 days. MOQ and lead time are confirmed with the quotation, based on plating and packaging options. Zero-MOQ trial runs are available. Tell us the product thickness, card type, annual volume and the part you are replacing (if any). An engineer replies within one working day with the right model, the drawing you need, and what we would change in your layout — if anything. Mention part number SD294-T6151-01 for the fastest reply.2.94 mm SD 8.0 card connector
Built to protect your thickness budget and your 4 GB/s signal
A card connector is invisible — until it fails
The enclosure is 0.5 mm too thick
Data drops at 4 GB/s, card not detected
Reflow warps the insulator, pads lift
Card detection fails after a few insertions
Every parameter, translated into a design decision
Mechanical
Electrical
Materials & plating
Environment & ordering
Four decisions that keep the card reading
Same card, four mechanical answers
Model Height Mechanism Mounting Choose it when
SD294-T6151-01This page
2.94 mm Push-pull Top SMT
Slimmest build, no ejector to jam — for ultra-thin laptops and readers.
SD298-T2250-03
2.98 mm Push-pull Top SMT
A slightly taller push-pull option with the same retention feel.
SD298-T1250-01
2.98 mm Push-push Top SMT
When end users expect press-to-eject behaviour.
SD358-T1250-10
3.58 mm Push-push Top SMT
Height is not critical; a push-push mechanism is wanted.
Built for products that get carried, dropped and left in the sun
Everything your mechanical engineer needs
Frequently asked questions
What is the difference between SD 8.0 and SD 3.0 connectors?
Should I choose push-pull or push-push?
Is it reflow compatible?
Can you cross-reference an imported brand?
What is the minimum order and lead time?
Send your stack-up. Get a drawing, a sample and a straight answer.
