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Specifications
Isolation Voltage(Vrms):
1.5kV
Inductance:
350uH
Operating Temperature:
0℃~+70℃
Turns Ratio:
1:1
rate:
100M
Mfr. Part #:
B1203D
Package:
DIP-12,12.8x7.3mm
Key Attributes
Model Number:
B1203D
Product Description
Product Overview
The B1203D is a 10/100M Single Port Transformer Module designed for Ethernet applications. It is compatible with various 10/100 Base-TX transceivers requiring a 1:1 transmit and receive turns ratio. This module complies with the IEEE 802.3ab standard, including baseline wander compensation. It features a single channel interface for 10/100Mbps Ethernet with Common Mode Chokes (CMCs) tuned to enhance EMC system performance. Available in a Through Hole package, it operates within a temperature range of 0 to +70.
Product Attributes
- Brand: CND-tek
- Model: B1203D
- Package Type: Through Hole
- Operating Temperature Range: 0 TO +70
- Storage Temperature Range: -25 TO +125
Technical Specifications
| Specification | Value | Conditions |
|---|---|---|
| OCL (Open Circuit Inductance) | 350 H Min. | @ 100 KHz, 100mV with 8mA DC Bias |
| Leakage Inductance | 0.5 H Max. | @ 100KHz, 0.1V |
| Cw/w (Capacitance) | 28F Max. | @ 100KHz, 0.1V |
| DCR (DC Resistance) | 1.20 Max. | |
| Turns Ratio (5%) | 1CT:1 (TX), 1CT:1 (RX) | |
| Polarity | 1-12, 4-9 In-Phase | |
| Insertion Loss (TX & RX) | -1.1 dB Max. | @ 1-100 MHz |
| Return Loss | -18 dB Min. | @ 0.5-30MHz |
| -15 dB Min. | @ 40 MHz | |
| -13 dB Min. | @ 60 MHz | |
| -11 dB Min. | @ 80 MHz | |
| -10 dB Min. | @ 100 MHz | |
| Cross Talk | -45 dB Min. | @ 30 MHz |
| -40 dB Min. | @ 60 MHz | |
| -35 dB Min. | @ 100 MHz | |
| Common Mode Rejection | -43 dB Min. | @ 1-30 MHz |
| -37 dB Min. | @ 60 MHz | |
| -33 dB Min. | @ 80-100 MHz | |
| Isolation HI-POT | 1500Vrms | 1mA, 1Second |
Packing Specifications
| Level | Quantity |
|---|---|
| Units/Reel | 40 PCS |
| Reels/Carton | 280 PCS |
| Units/Carton | 11200 PCS |
Dimensions & Schematics
Dimensions are in mm. Unless otherwise specified, tolerances are: 0.15mm.
Pinout:
- TX+ : 12
- TX- : 11
- TXCT : 10
- TD- : 3
- TD+ : 1
- TCT : 2
- RD+ : 4
- RD- : 6
- RX- : 7
- RX+ : 9
- 1CT:1CT (TX)
- 1CT:1CT (RX)
- 1-12, 4-9 In-Phase
Recommended Land Pattern:
- Dimension 1: 10.00 mm
- Dimension 2: 5.00 mm
- Dimension 3: 2.00 mm
- Dimension 4: 0.80mm
2410141439_CND-tek-B1203D_C408870.pdf
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