TK4100 / EM4100 (125kHz read-only) → EM4200
Cross-reference / replacement · EM Micro / compatibles → EM Microelectronics
- Frequency:
- 100~150 kHz (125 kHz)
- Memory:
- 128-bit ROM (read-only)
- Type:
- Read-only LF transponder
- Modulation:
- Manchester / Biphase / PSK
Compatibility & sourcing notes
The EM4200 is EM Microelectronic’s designed direct replacement for the EM4100/4102 read-only ICs and is protocol-compatible: an existing 125kHz reader decodes an EM4200-programmed tag exactly like an EM4100/TK4100 (same Manchester / 64-bit ID framing), with EM4200 adding higher density and longer read range. For read-side interchange it is a functional drop-in.
The two share a footprint and interface and can usually be swapped directly; before mass production, still confirm voltage, density, and timing against both datasheets.
Frequently asked questions
Can EM4200 replace the TK4100 / EM4100 (125kHz read-only)? ▾
The EM4200 is EM Microelectronic’s designed direct replacement for the EM4100/4102 read-only ICs and is protocol-compatible: an existing 125kHz reader decodes an EM4200-programmed tag exactly like an EM4100/TK4100 (same Manchester / 64-bit ID framing), with EM4200 adding higher density and longer read range. For read-side interchange it is a functional drop-in.
What should I check when replacing the TK4100 / EM4100 (125kHz read-only)? ▾
The two share a footprint and interface and can usually be swapped directly; before mass production, still confirm voltage, density, and timing against both datasheets.
Is the EM4200 in stock, and can I get a quote? ▾
JLink Technology is an authorized distributor and supplies EM4200 with stock, pricing, and lead time. Click "Request a Quote" with your quantity and we reply within one business day.