Custom ST25T Series RFID Cards with ST25TA or ST25TB Chips

ST25TA vs. ST25TB: Which Card Fits Your Project?

ST25TA and ST25TB are different contactless IC families. The correct choice depends on the communication protocol, required chip functions, memory capacity and the reader or software used by your project.

ST25TA Cards for NFC Applications

ST25TA chips use the ISO/IEC 14443 Type A interface and belong to the NFC Forum Type 4 family. They are suitable for NFC applications such as digital product information, brand protection, smart posters, digital business cards and compatible wireless-pairing experiences.

Selected ST25TA models include additional functions such as password protection or TruST25™ digital signatures. These functions depend on the exact chip model and should be matched to the intended application.

ST25TB Cards for Type B Systems

ST25TB chips use the ISO/IEC 14443 Type B interface. They are suitable for applications such as public transportation, event ticketing and product identification systems designed for compatible Type B technology.

ST25T Series Card Specifications

Kaisere Technology offers configurable ST25T cards for OEM and B2B projects. The following specifications are based on the available product configuration.

Chip Configuration and Functional Requirements

The chip model determines communication protocol, memory capacity and available electronic features. For NFC applications, the data format and intended phone interaction should be defined before programming.

Rather than applying one set of technical claims to the entire ST25T family, this product page distinguishes chip-specific specifications so procurement teams can compare options more accurately.

ST25T RFID Cards for Contactless Identification and Digital Interaction

NFC Product Authentication and Brand Protection

ST25TA cards can support digital product experiences and product-identification workflows. Depending on the selected IC and system implementation, a card or embedded NFC credential can link a physical product to digital product information, brand content or an authentication workflow.

For authentication projects, chip selection, signature support, data management and back-end verification should be designed as a complete solution rather than relying on the card alone.

Smart Posters and Digital Business Cards

ST25TA cards are suitable for projects that connect physical cards or displays with digital content. They can support compatible NFC applications such as sharing contact details, opening a web page or accessing product information through programmed data.

Public Transportation and Event Ticketing

ST25TB cards are suitable for contactless applications designed around the ISO/IEC 14443 Type B interface. Transportation operators and ticketing solution providers can specify the required chip model and card construction according to their system architecture.

Contactless Identification and Product Identification

ST25TA or ST25TB cards can be considered for identification projects when the chip protocol, data capacity, security functions and reader compatibility meet the intended system requirements. The selected chip and application software determine the capabilities of the finished solution.

Access and Membership Applications

ST25T cards can also be configured for compatible identification and membership systems. These applications require a compatible reader, suitable software and the correct credential design. A chip's communication standard alone does not guarantee compatibility with every access control or membership system.

Custom ST25T Cards Tailored to Your Brand and System

Every project has different requirements for card appearance, encoding, durability and system integration. Kaisere Technology offers card customization options for distributors, brands and system integrators.

Card Size and Thickness

The standard format is CR80 (85.5 × 54 mm), with 0.76 mm and 0.84 mm thickness options. Customized dimensions and constructions can be specified according to the selected chip, antenna design and intended use.

Materials and Surface Finishes

Available materials include PVC, recycled PVC (RPVC), PLA, PC, PET, PETG, PBAT and Teslin. Surface options include glossy, matte, epoxy and brushed finishes, depending on the selected card construction.

Material selection should account for appearance, flexibility, expected service conditions, production requirements and project sustainability objectives.

Printing and Personalization

Available customization options include:

lFull-color offset, digital, silk-screen or UV printing

lCompany logos, brand artwork and custom card layouts

lLaser marking, inkjet codes and embossed or flat text

lBarcodes, QR codes and other variable identification data

lChip encoding and data programming according to the agreed requirements

The final production specification combines the chosen chip, material, dimensions, finish, printing and data requirements into one order configuration.

OEM Manufacturing for Consistent ST25T Card Supply

For B2B card sourcing, reliable production depends on more than the chip itself. Card construction, printing consistency, electronic function, personalization accuracy and batch inspection all affect the final product.

Kaisere Technology supports ST25T card projects through specification coordination, customization and manufacturing for repeat and bulk orders.

Production and Inspection Process

The production workflow can include:

1. Specification review: Confirm the ST25TA or ST25TB model, dimensions, material, thickness, printing and encoding requirements.

2. Artwork approval: Review the card layout, logos, variable data and finishing details before production.

3. Card production: Manufacture the selected card construction according to the approved specifications.

4. Functional testing: Carry out chip identification, reading and agreed encoding checks according to the selected IC and test plan.

5. Final inspection: Check appearance, dimensions, printing and the agreed acceptance criteria before shipment.

For projects that depend on specific reader compatibility, the chip model, card antenna and intended reader configuration should be defined before the production run. This provides a clearer basis for sample approval and repeat-order consistency.

Quality documents and inspection records should correspond to the actual product configuration and inspection scope.

Why Choose Kaisere Technology?

An Experienced RFID Card Manufacturer for Global B2B Buyers

Kaisere Technology was established in 2003 and serves customers in more than 100 countries. The company reports a combined 10,000 m² operating footprint across its Shenzhen and Dongguan facilities, with a focus on smart cards, RFID products, labels and related solutions.

Experience in RFID and Smart Card Production

Our product range includes RFID cards, NFC cards, RFID wristbands, labels and tags for a variety of commercial and industrial projects. This product experience supports discussions around chip selection, card construction, personalization and custom sourcing.

Customization for Different Procurement Needs

Card distributors, system integrators and brand owners can specify chip models, materials, dimensions, printing, coding and other project requirements in a coordinated order.

Support for Bulk and Repeat Orders

Production planning is organized around the selected configuration, quantity, customization requirements and delivery destination. Procurement teams can provide forecast volumes and repeat-order plans to coordinate production and shipment requirements.

International B2B Supply

Kaisere Technology serves customers across international markets. Export requirements, packaging, shipping arrangements and order documentation can be discussed as part of the quotation process.

For buyers comparing suppliers, we recommend including the technical specification, quality requirements, expected quantity and delivery destination in the initial enquiry. This helps establish a clearer basis for pricing and production planning.

How to Order Custom ST25T Series RFID Cards

A complete RFQ helps our team recommend a card configuration and prepare a more useful quotation.

Step 1 — Specify the Chip

Choose ST25TA or ST25TB and provide the exact chip model when it has already been selected by your engineering team.

Step 2 — Define the Card Requirements

Provide the dimensions, thickness, material, finish, artwork and required personalization.

Step 3 — Share the Application Details

Tell us which reader or system will be used and whether the cards require specific memory, data formatting, password-related functions or other chip capabilities.

Step 4 — Confirm Quantity and Delivery

Provide the estimated order quantity, destination country, packaging requirements and target delivery schedule.

Step 5 — Review the Quotation and Production Specification

The quotation should identify the agreed chip configuration, card construction, personalization scope, quantity, production schedule and shipping arrangements.

Frequently Asked Questions About ST25T Series Cards

1. What is an ST25T Series Card?

An ST25T Series Card is a contactless RFID card using a compatible ST25-series chip. This product configuration offers ST25TA and ST25TB chip options. The selected chip determines the card's communication protocol, memory capacity and available functions.

2. What is the difference between ST25TA and ST25TB cards?

ST25TA uses ISO/IEC 14443 Type A and belongs to the NFC Forum Type 4 family. ST25TB uses ISO/IEC 14443 Type B. ST25TA is suited to NFC applications such as product authentication and digital interaction, while ST25TB is suited to systems designed for Type B communication, including certain transportation and ticketing applications.

3. Can ST25T cards be read by NFC smartphones?

ST25TA cards are designed for NFC Forum Type 4 applications and can support compatible NFC-enabled smartphone interactions. Actual behavior depends on the chip model, programmed data, phone capability and application.

4. What memory capacity is available for ST25TA and ST25TB?

The available capacity depends on the exact chip model. ST25TA models include 2-Kbit, 16-Kbit and 64-Kbit options. ST25TB models include 512-bit, 2-Kbit and 4-Kbit options. The exact part number determines the available memory and functions.

5. Can ST25T RFID cards be customized?

Yes. Available customization options include CR80 or project-specific dimensions, different materials, card thicknesses, surface finishes, printing, variable codes and encoding. Final options depend on the selected card construction and chip requirements.

6. Can you print barcodes and QR codes on ST25T cards?

Yes. Printing and personalization options include barcodes, QR codes, laser marking, inkjet codes, flat codes and embossed codes. The final combination depends on the artwork, card material and production specification.

7. What is the read range of an ST25T card?

There is no single guaranteed read range for every ST25T card. Performance depends on the specific chip, antenna design, card construction, reader or phone and operating environment. For a system with a defined reading requirement, the card should be configured for the intended reader and application.

8. Are password protection and TruST25™ available on all ST25T cards?

No. These are model-specific functions rather than universal features of every ST25T chip. Selected ST25TA models support additional capabilities such as password protection or TruST25™ digital signatures. The exact chip model determines which features are available.

9. What information is needed for an ST25T card quotation?

Please provide the chip model, order quantity, card size, thickness, material, printing requirements, encoding or programming needs, application details and destination country. Include artwork and reader-system information when available to help define the required configuration.