T5577 Card Supplier
RFIDAK can source T5577 cards for a specified reader and application. MOQ guidance for this format: 500 pieces baseline; confirm the selected card. Confirm the exact chip, finished construction, applicable standards, sample terms and production schedule in a written quote.
Quick spec — T5577 Card
- Chip
- T5577
- Frequency
- 125 kHz
- Standards
- Configurable LF format, including ISO/IEC 11784/11785 when correctly programmed and approved
- Memory
- 7 × 32-bit user blocks in the cited ATA5577 variant; confirm the exact variant and configuration
- Security
- 32-bit password protection
- Form Factor
- Card (ID-1 / CR-80 face size (85.6 × 54 mm); approve thickness)
- Materials
- PVC / PETG / ABS
- MOQ
- 500 pieces baseline; confirm the selected card
- Lead Time
- Confirm production and transit dates in the quote
Chip technical brief
Microchip ATA5577 is a programmable LF IC with configurable data rate and encoding; the cited variant has seven 32-bit user blocks, including a password block. It can be configured for selected legacy formats, but successful use depends on the exact reader protocol, data layout, site authorization and access-controller mapping. A blank chip is not a universal replacement for HID, AWID, Indala or animal-identification credentials. For ISO/IEC 11784/11785 animal use, Microchip also requires appropriate programming and approval of the finished transponder and identifier scheme.
Buyer one-liner
Configurable LF chip for authorized format migration; test the exact reader and encoding.
Typical use cases
- ▸Authorized LF format migration
- ▸System-integrator compatibility testing
- ▸Documented read/write LF applications
Reader requirements to validate
Confirm the exact reader model, firmware, antenna, supported protocol and application or credential data with the system owner. Test the finished sample on the installed setup; a chip datasheet or shared frequency does not establish compatibility.
Card construction and approval
A contactless card combines a selected chip and antenna with a card body. Start with the system-approved chip, data format and reader, then confirm face dimensions, finished thickness, material, print method and any magnetic-stripe or contact-chip option. Material names do not establish heat resistance, printer fit, recyclability or lock compatibility. For custom artwork and numbering, agree a proof and an encoded sample before production. The card MOQ in the company policy is a baseline; quantities, packing, chip availability and production timing belong in the configuration-specific quotation.
Typical sizes
- • ID-1 / CR-80 face size (85.6 × 54 mm); approve thickness
- • Other card sizes and shapes subject to drawing and tooling review
Materials
- • PVC
- • PETG
- • ABS
- • Wood or bamboo
- • Coated paper
Document scope to verify
Request current documents for the exact finished article, materials and destination. A form-factor name does not establish a certification or IP rating.
Why source T5577 cards from RFIDAK
T5577 is a programmable LF transponder that can be configured for different modulation and data-rate requirements, but a configured card must be validated with the exact approved reader and controller. It is not a universal drop-in replacement for every 125 kHz credential or protected access scheme. The system owner should specify the permitted data format and personalization process. Keep credentials and secret data within the authorized issuing workflow; request sample cards for the installed system before approving a migration or repeat order.
Buyer snapshot
Authorized integrators evaluating LF format migration or prototype credentials. They should confirm the permitted format and test the complete reader-to-controller result before any production specification is fixed.
Planning examples
Illustrative evaluation plans, not reported customer results.
Example 1
Illustrative integrator pilot (not a customer case): define one permitted LF data format, program a limited set of test cards through the authorized issuer and record the reader-to-controller values. Check allowed and denied decisions before adding any other format.
Example 2
Illustrative mixed-site review (not a customer case): inventory each reader model and approved credential format, then test separate configured samples at each site. Do not assume a format accepted at one location works at another or that a programmable card authorizes cloning existing credentials.
Compare with other cards
Compare chip-level differences for the same form factor. Check the exact reader, credential format, finished construction and available samples before selecting a configuration.
| Chip | Memory | Security | Typical Use | Quote basis |
|---|---|---|---|---|
| T5577 (this page) | 7 × 32-bit user blocks in the cited ATA5577 variant; confirm the exact variant and configuration | 32-bit password protection | Authorized LF format migration | Confirm chip availability, construction and quantity in the quote |
| MIFARE Classic 1K | 1,024 bytes EEPROM | Crypto-1 (deprecated since 2008 | Hotel key cards (Saflok / VingCard / Onity legacy) | Confirm chip availability, construction and quantity in the quote |
| MIFARE Classic 4K | 4,096 bytes EEPROM | Crypto-1 (deprecated | Legacy multi-app cards | Confirm chip availability, construction and quantity in the quote |
| MIFARE Plus S 2K | 2,048 bytes EEPROM | AES-128 in Security Level 3 | Migration from MIFARE Classic 1K | Confirm chip availability, construction and quantity in the quote |
| MIFARE Plus X 4K | 4,096 bytes EEPROM | AES-128 with proximity-check, virtual-card support | Transit ticketing | Confirm chip availability, construction and quantity in the quote |
Recommended RFIDAK SKUs
These catalog formats are candidates for a T5577 build. Confirm chip availability and the finished configuration in the quote.

RFID Cards
Custom PVC RFID Card
Custom PVC RFID cards combine a printable card body with a selected chip and antenna for access control, hotel credentials, membership or NF…

RFID Keyfob
RFID Keyfob
Custom RFID keyfobs for access control in ABS, silicone, epoxy and leather. Match LF, HF or NFC chips, logo printing, encoding, samples and …
Frequently asked — T5577 cards
What is the minimum order quantity for T5577 cards?▾
MOQ guidance for this format: 500 pieces baseline; confirm the selected card. Pilot size and unit price depend on chip availability, format, encoding, artwork and quantity; request a written quote for the exact specification.
How should I check reader compatibility with T5577 cards?▾
Check the exact installed reader and controller model, firmware, credential profile and application data requirements. A frequency or protocol match alone does not prove compatibility. Have the system owner test a representative finished sample before authorizing production.
Can RFIDAK pre-encode T5577 cards to our specification?▾
Writable EPC, NDEF or user-memory content may be encoded to an approved specification, depending on the chip and access rights. Factory-programmed UIDs normally cannot be changed. Secure credential provisioning needs an agreed key-custody process; never submit secret keys in a public inquiry form. Confirm feasibility and price for the exact data format.
What lead time should I plan for T5577 cards to major export markets?▾
Confirm a production-ready date after the specification and sample are approved, then obtain a separate freight and import timeline for the destination. Ask for dated milestones in the project quote rather than relying on a form-factor average.
Which documents apply to T5577 cards?▾
Document scope depends on the exact material, chip, reader and destination market. Ask RFIDAK to identify the applicable certificate or test report for the quoted SKU; a company certificate or another product's report does not automatically certify this configuration.
Ready to source T5577 cards?
Send the chip preference, reader and application requirements, quantity, and destination. Confirm availability, sample terms, unit pricing and production schedule for the proposed configuration. Standard form-factor MOQ baseline: 500 pieces baseline; confirm the selected card.
Request a Configuration QuoteTest RFID Samples Before You Order
Free stock samples (up to 5 pieces) — buyer covers DHL/FedEx freight ($25–60), refunded 1:1 against the first production order over $500. Custom samples may cost extra. Confirm the sample configuration, availability and dispatch date before shipment.
Request the RFIDAK product catalog (PDF). Our team will reply by email.
We'll only use your email to send the catalog and reply to your inquiry.