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JAE Launches ST20 Series: Stacked-Tray Combo Connector for nanoSIM and microSD™ Cards

July 2, 2026

JAE has developed and launched the ST20 Series, a compact push-pull tray combo connector that supports nanoSIM and microSD™ (＊1) cards in a stacked, two-tier tray structure.

Stacked-Tray Combo Connector ST20 Series for nanoSIM and microSD™ Cards

Overview

SIM cards enable mobile network connectivity and voice service, while SD cards provide data storage and backup. A growing number of devices — including smartphones, drones, and dashcams — now require both a nanoSIM and a microSD card.
JAE's existing ST19 Series addresses this need with a compact combo connector that accepts both cards side-by-side on a single plane. However, as battery capacities grow and additional components compete for board space, even smaller solutions are required.
The new ST20 Series answers that demand with a stacked-tray architecture: a single tray holds a card on both its top and bottom surfaces, cutting PCB footprint by approximately 50% compared to the ST19 Series. The slot itself is formed when two reflow-mounted components — a socket (＊2) and a block (＊3) — come together on the PCB, eliminating any separate joining mechanism and enabling an exceptionally compact, low-profile design.

Figure 1: Approximately 50% reduction in mounting area compared to the ST19 Series
Approximately 50% reduction in mounting area compared to the ST19 Series

Figure 2: Stacked tray structure
Stacked tray structure

Figure 3: Reflow Mounting Process
Reflow Mounting Process

After reflow

  • microSD™ is a trademark of the SD Association
  • The Socket is consists of a connector housing, contacts on the tray’s top side, and a detection switch, designed to support nanoSIM cards
  • The Block has contacts on the bottom of the tray that support nanoSIM or microSD cards, enabling 3-in-2 functionality

Features

  • 3-in-2 configuration: nanoSIM (top) + microSD (bottom), or nanoSIM on both top and bottom
  • Push-pull tray operation
  • Dimensions: 2.35 mm (H) × 15.2 mm (W) × 15.9 mm (D)
  • Anti buckling contact design
  • Normally closed tray detection switch (D-SW)
  • Misinsertion prevention structure
  • Card retaining features designed in tray

Applicable Markets

Smartphones, tablet PCs, drones, dashcams, gaming consoles, notebook PCs

General Specifications

Number of Contacts 20 pos. + 2 pos. (switch)
Contact Resistance Signal Terminals: 100mΩ max. (initial)
Dielectric Withstand Voltage AC500Vr.m.s. (per minute)
Insulation Resistance 1,000MΩ min. (initial)
Insertion/Removal Life 2,500 mating cycles
Operating Temperature Range -25 deg. C to +85 deg. C
Rated Current 0.5A max.
Rated Voltage 10V max.

Materials and Finishes

Socket

Component Material Material / Finish
Contacts Copper Alloy Gold Plating over Nickel
(contact and mounting area)
Housing Synthetic Resin -
Cover Stainless Steel Gold Plating over Nickel
(mounting area)
Detection Switch Copper Alloy Gold Plating over Nickel
(contact and mounting area)

Block

Component Material Material / Finish
Contacts Copper Alloy Gold Plating over Nickel
(contact and mounting area)
Housing Synthetic Resin -

ST20 Series (For more details)opens in a new window


Stacked-Tray Combo Connector ST20 Series for nanoSIM and microSD™ Cardsopens in a new window 　

Information and details given here are as of the date of publication. Please note that the details may be changed.

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