August 13, 2026
T5577 blank contactless RFID cards are programmable 125 kHz RFID cards designed for access control, identification, parking systems, and other low-frequency RFID applications. Built around the T5577/ATA5577 chip and a contactless coil antenna, these cards can store and transmit identification data when used with a compatible RFID reader.
Compared with fixed-ID proximity cards, T5577 cards offer greater flexibility because their data configuration can be programmed or changed according to the requirements of the compatible system. This makes them suitable for RFID card manufacturers, access control integrators, security system providers, and businesses that need customizable low-frequency RFID credentials.
We supply T5577 blank RFID cards in standard CR80 dimensions as well as customized formats. PVC, PET, and ABS materials are available, with options for full-color printing, magnetic stripes, barcodes, signature panels, and other personalization requirements.
What Is a T5577 RFID Card?
A T5577 RFID card is a low-frequency contactless card using the T5577 RFID integrated circuit, also commonly identified as ATA5577. It normally operates at 125 kHz and communicates with compatible RFID readers through an integrated coil antenna.
The card does not require a battery. The RFID reader generates an electromagnetic field that supplies energy to the card, allowing the chip to communicate with the reader.
T5577 technology is commonly used for applications where short-range identification is required, including door access, employee identification, parking, membership systems, and equipment identification.
One of the main advantages of T5577 technology is its programmability. Unlike many read-only low-frequency RFID cards, T5577 provides configurable memory and operating parameters when supported by the appropriate programming equipment.
T5577 RFID Card Specifications
T5577 RFID card is contactless read/write identification card for applications in 125KHz or 134KHz. A single coil connected to the chip serves as the IC’S power supply and bi-directional communication interface. The antenna and chip together from a card or a tag.
| Item: | Customized Hotel key Access Control T5577 RFID Cards |
| Material: | PVC, PET, ABS |
| Surface: | glossy, matte, frosted |
| Size: | standard credit card size 85.5*54*0.84mm, or customized |
| Frequency: | 125khz/LF |
| Chip type: | -LF(125KHz), TK4100, EM4200, ATA5577, HID etc -HF(13.56MHz), NXP NTAG213, 215, 216, Mifare 1k, Mifare 4K, Mifare Ultralight, Ultralight C, Icode SLI, Ti2048, mifare desfire, SRIX 2K, SRIX 4k, etc -UHF(860-960MHz), Ucode G2XM, G2XL, Alien H3, IMPINJ Monza, etc |
| Reading distance: | 3-10cm for LF&HF, 1m-10m for UHF depends on the reader and envirnment |
| Printing: | silk screen and CMYK full color printing, digital printing |
| Available crafts: | -CMYK full color & silk screen -signature panel -magnetic stripe: 300OE, 2750OE, 4000OE -barcode: 39,128, 13, etc |
| Application: | Widely used in transportation, insurance, Telecom, hospital, school, supermarket, parking, access control, etc |
| Leadtime: | 7-9 working days |
| Package: | 200 pcs/box, 10 boxes/carton, 14 kg/carton |
| Shipping way: | by express, by air, by sea |
| Price term: | EXW, FOB, CIF, CNF |
| Payment: | by L/C, TT, western union, paypal, etc |
| Monthly capacity: | 8,000,000 pcs / month |
| Certificate: | ISO9001, SGS, ROHS, EN71 |
What can a t5577 proximity card be used for? A single-coil connected to the chip serves as the IC’S power supply and bi-directional communication interface. The antenna and chip together from a card or a tag. T5577 card is usually used for access control applications, electronic RFID wallets or parking applications, etc.
Key Features of T5577 Blank RFID Cards
T5577 cards combine a standard card format with programmable low-frequency RFID technology. Key features include:
- 125 kHz low-frequency RFID operation
- Contactless communication
- Programmable memory
- Compatible with selected T5577/ATA5577 programming equipment
- CR80 standard card dimensions
- PVC, PET, and ABS material options
- Custom card printing available
- Suitable for short-range access control applications
- Optional barcode and magnetic stripe personalization
- Custom shapes and dimensions available
- OEM and bulk production supported
The actual reading distance and system compatibility depend on the RFID reader, antenna design, card construction, installation environment, and programmed card configuration.
How T5577 Contactless RFID Cards Work
A T5577 card contains an RFID chip connected to a coil antenna embedded inside the card. When the card enters the electromagnetic field generated by a compatible 125 kHz reader, the antenna receives energy from the reader.
The chip uses this energy to operate and communicate stored identification or configuration data back to the reader. The reader then sends the received information to the access control or identification system.
This contactless process allows users to present a card without physically inserting it into a reader.
The effective reading range is generally short. For access control, this can be an advantage because the card must normally be presented relatively close to the reader, helping reduce accidental reads from distant credentials.
T5577 vs. EM4100 vs. TK4100 RFID Cards
T5577 is often compared with other 125 kHz RFID technologies such as EM4100 and TK4100. Although they may look similar externally, their chip capabilities and typical use cases can differ.
| Feature | T5577 | EM4100 | TK4100 |
|---|---|---|---|
| Frequency | 125 kHz | 125 kHz | 125 kHz |
| Technology | LF RFID | LF RFID | LF RFID |
| Programmability | Yes, configurable | Generally read-only | Generally read-only |
| Memory | Configurable memory | Fixed identification data | Fixed identification data |
| Typical Use | Access control, programmable credentials | Identification, access control | Identification, access control |
| Reusable for Different Data | Possible with compatible equipment | No | Generally no |
| Best Advantage | Flexibility | Simplicity | Cost-effective identification |
The correct choice depends on the reader and access control system. A T5577 card should not be selected solely because it operates at the same frequency as an existing 125 kHz card. The reader must support the relevant card technology, modulation, encoding, and data format.
T5577 vs. 13.56 MHz RFID Cards
Frequency is one of the first specifications to check when selecting an RFID card.
T5577 cards operate in the low-frequency 125 kHz range. Many modern smart cards, including several NFC and HF RFID products, operate at 13.56 MHz.
| Feature | T5577 / LF | 13.56 MHz / HF |
|---|---|---|
| Frequency | 125 kHz | 13.56 MHz |
| Typical Range | Short range | Short to medium range |
| Common Applications | Access control, identification | NFC, payment, transit, smart cards |
| Data Capability | Depends on chip | Depends on chip |
| Common Chips | T5577, EM4100, TK4100 | MIFARE, NTAG, DESFire |
| Smartphone Compatibility | Generally not supported | Supported by many NFC-compatible products |
| Typical Security Level | Depends on system | Can support advanced cryptography |
T5577 should therefore be considered when the target access control system specifically uses compatible 125 kHz technology. It is not a direct replacement for every 13.56 MHz smart card.
Why Choose T5577 Blank RFID Cards?
The biggest advantage of a blank T5577 card is flexibility. The cards can be supplied without preprinted identification information and can then be programmed or personalized according to project requirements.
This is useful for system integrators and distributors that support multiple customers or access control installations.
Instead of ordering a different fixed-ID card for every application, programmable cards can provide a more flexible production and inventory strategy when the target systems are compatible with T5577 technology.
T5577 cards can also be customized with company logos, employee information, serial numbers, barcodes, or other visual elements, making the RFID credential both functional and easy to identify.
T5577 RFID Cards for Access Control
Access control is one of the most common applications for 125 kHz RFID cards. A user presents the card near an RFID reader, and the reader checks the card’s identification information against the access control system.
T5577 cards can be used in suitable systems for:
- Office door access
- Employee identification
- Residential access
- Apartment buildings
- Hotels and facilities
- Schools and campuses
- Warehouses
- Industrial sites
- Parking entrances
- Restricted areas
Compatibility must always be verified before replacing an existing card. A 125 kHz reader may support only specific card formats and protocols.
Other Applications
T5577 technology can also be used outside traditional door access control.
| Application | Example Use |
|---|---|
| Parking | Vehicle or user identification |
| Membership | Club or facility membership cards |
| Employee ID | Staff identification |
| Campus Access | School or university entry |
| Hotel Access | Compatible low-frequency credentials |
| Equipment Tracking | Identification of tagged equipment |
| Industrial Access | Restricted-area identification |
| Asset Identification | Identification of compatible RFID assets |
For applications requiring encryption, long read ranges, mobile phone compatibility, or advanced authentication, a different RFID technology may be more appropriate.
Card Material and Construction
PVC is a common choice for standard RFID cards because it offers a balance between durability, printability, cost, and appearance.
PET can be selected when a different material structure is required, while ABS can be considered for applications where a more robust plastic construction is preferred.
The RFID antenna and chip are embedded inside the card structure. The final performance is affected not only by the chip but also by the antenna design and card manufacturing process.
| Material | Typical Advantage | Suitable Applications |
|---|---|---|
| PVC | Cost-effective and easy to print | Standard access cards |
| PET | Durable and flexible | Identification and specialized cards |
| ABS | Stronger plastic construction | Industrial environments |
Material selection should consider the operating environment, expected card life, printing requirements, and budget.
Custom Printing Options
Blank RFID cards do not have to remain visually blank. Custom printing can turn a standard RFID credential into a branded identification card.
Available personalization options may include:
- Company logo
- Brand colors
- Employee name
- Employee photograph
- Card number
- QR code
- Barcode
- Signature panel
- Magnetic stripe
- Serial number
- Custom background graphics
CMYK full-color printing can be used for detailed designs, while screen printing may be suitable for specific colors or simple graphics.
For high-volume projects, the card artwork and personalization data can be prepared according to the customer’s production requirements.
Standard Card Size and Custom Formats
The standard RFID card format is approximately 85.5 × 54 mm, similar to the dimensions commonly used for bank cards and identification cards.
A standard CR80-style format is convenient for wallets, card holders, printers, and existing card management systems.
Custom dimensions and shapes may also be available for applications that require a special physical format. However, custom card construction should be evaluated carefully because the antenna design must be compatible with the selected card dimensions and RFID operating requirements.
Reading Distance and Performance
The actual reading distance of a T5577 card should not be treated as a fixed number.
A typical low-frequency RFID access control installation may provide a reading distance of several centimeters. The actual result can vary according to:
- RFID reader output power
- Reader antenna size
- Card antenna design
- Card orientation
- Installation environment
- Metal objects near the reader
- Electromagnetic interference
- Card and reader configuration
For this reason, testing a sample card with the actual access control reader is recommended before placing a large production order.
How to Select the Right RFID Card
Before ordering T5577 cards, confirm the requirements of the existing RFID system.
1. Check the Operating Frequency
Confirm that the reader operates at 125 kHz if you intend to use a standard T5577 LF card.
2. Identify the Existing Card Technology
Do not assume that every 125 kHz card is interchangeable. Check the existing card type, encoding, format, and system requirements.
3. Confirm Programmability
If you require programmable credentials, make sure the card programmer and access control software support the required T5577 configuration.
4. Test Compatibility
A sample test is recommended before mass production, particularly when replacing an existing access card.
5. Select the Physical Configuration
Choose the card material, thickness, surface finish, printing, and optional features according to the application.
T5577 Card Selection Checklist
| Requirement | What to Confirm |
|---|---|
| Frequency | 125 kHz |
| Chip | T5577 / ATA5577 |
| Reader | Compatible LF RFID reader |
| Programming | Required or not required |
| Card Size | Standard or customized |
| Material | PVC, PET, or ABS |
| Printing | Blank or customized |
| Barcode | Required or not required |
| Magnetic Stripe | Required or not required |
| Environment | Indoor or demanding environment |
| Quantity | Sample, small batch, or bulk order |
| Compatibility Test | Recommended before mass production |
OEM and Custom RFID Card Manufacturing
For distributors, access control companies, and RFID system integrators, customized production can be more practical than purchasing generic cards.
OEM services can include custom artwork, card dimensions, material selection, chip configuration, numbering, barcode printing, and packaging.
For larger projects, production specifications should be confirmed before manufacturing. This includes the exact RFID chip, antenna design, card dimensions, visual artwork, programming requirements, quantity, packaging, and delivery schedule.
A sample approval process can help verify both card appearance and RFID compatibility before full production.
Quality Control
RFID cards should be checked for both physical quality and electronic performance.
Typical quality control can include visual inspection, dimensional inspection, printing inspection, chip verification, antenna testing, and RFID reading tests.
For access control projects, electronic compatibility is especially important. A card that meets the physical specifications may still fail to operate correctly if its RFID configuration does not match the reader or access control system.
Frequently Asked Questions
Is T5577 the same as 125 kHz RFID?
Not exactly. T5577 is a specific RFID chip technology that commonly operates at 125 kHz. The 125 kHz specification describes the frequency range, while T5577 identifies the chip technology.
Can T5577 cards be programmed?
Yes. T5577 is designed as a programmable low-frequency RFID chip. However, programming requires compatible equipment and knowledge of the target system’s required configuration.
Can T5577 replace an EM4100 card?
Not automatically. Both may operate at 125 kHz, but their data formats and system compatibility can differ. The target reader and access control system should be tested before replacement.
What is the typical T5577 card reading distance?
A typical reading distance may be several centimeters, but actual performance depends on the reader, antenna, card orientation, installation environment, and configuration.
Can T5577 cards be custom printed?
Yes. T5577 RFID cards can be produced with custom graphics, logos, text, photographs, serial numbers, barcodes, and other personalization options.
Can T5577 cards work with NFC phones?
Standard T5577 cards operate at low frequency and are generally not compatible with NFC functions on smartphones. NFC normally uses 13.56 MHz technology.
Are T5577 cards suitable for all access control systems?
No. The access control reader must support the relevant T5577 configuration or compatible RFID protocol. Frequency alone does not guarantee compatibility.
What card material should I choose?
PVC is generally suitable for standard access cards because it offers good printability and cost efficiency. PET or ABS can be considered when different durability or construction characteristics are required.
Why Order T5577 RFID Cards from Us?
We provide T5577 blank contactless RFID cards for access control and identification applications, with support for standard and customized card requirements.
Our production options cover different card materials, printing methods, physical formats, and personalization features. Bulk production is available for distributors, system integrators, security companies, and other professional RFID users.
For a new project, we recommend providing the RFID reader model, existing card type, required quantity, card dimensions, artwork, and programming requirements. This information allows the card configuration to be evaluated before production.
Request T5577 RFID Card Samples
If you are replacing an existing 125 kHz access card or developing a new RFID credential, sample testing is the best way to confirm compatibility.
Please provide the following information when requesting a quotation:
- Required quantity
- RFID chip or existing card type
- RFID reader model
- Card dimensions
- Card material
- Printing requirements
- Programming requirements
- Barcode or numbering requirements
- Delivery destination
We can then recommend a suitable T5577 card configuration and production option for your application.
Final Considerations
T5577 blank contactless RFID cards are a flexible solution for compatible 125 kHz access control and identification systems. Their programmable architecture makes them different from fixed-ID RFID cards, while the standard card format allows them to be customized for professional identification applications.
The most important factor is compatibility. Before ordering in bulk, verify the reader frequency, supported RFID technology, data format, programming requirements, and physical card specifications.
For standard access control projects, T5577 cards offer a practical combination of programmability, contactless operation, customizable card design, and scalable production.
Welcome to contact us for more product details.
