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BOURNS SM91072AL E 10 100 Base T Transformer with Extended Temperature Range and AEC Q200 Compliance

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BOURNS SM91072AL E 10 100 Base T Transformer with Extended Temperature Range and AEC Q200 Compliance

Isolation Voltage(Vrms) : 1.5kV

Inductance : 350uH

Operating Temperature : -40℃~+125℃

Turns Ratio : 1:1

rate : 10/100 Base-T

Description : 350uH LAN Transformer 1:1

Mfr. Part # : SM91072AL-E

Model Number : SM91072AL-E

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Product Overview

The SM91072AL is a 10/100 Base-T transformer designed to meet IEEE 802.3u standards, offering good performance and cost-effectiveness. It features an expanded operating temperature range from -40 C to +125 C, making it suitable for demanding environments. This transformer is RoHS compliant and halogen-free, and is AEC-Q200 compliant, ensuring adherence to industry regulations and quality standards. Its robust design makes it ideal for various networking applications requiring reliable signal integrity.

Product Attributes

  • Brand: Bourns
  • Model Series: SM91072AL
  • Compliance: IEEE 802.3u (100 Base-T), AEC-Q200, RoHS compliant, Halogen Free
  • Termination Material: Cu/Ni/Sn
  • Packaging: Tape and Reel

Technical Specifications

Specification Value Conditions
OCL 350 H Min. 100 kHz, 0.1 V, 8 mA DC Bias
Leakage Inductance (TD with TX Shorted) 0.5 H Max. 100 kHz, 0.1 V
Leakage Inductance (RD with RX Shorted) 0.5 H Max. 100 kHz, 0.1 V
Turns Ratio (TD : TX) 1 : 1 (2 %)
Turns Ratio (RD : RX) 1 : 1 (2 %)
DCR (TD & RD) 1.4 ohm Max.
DCR (TX & RX) 1.0 ohm Max.
Insertion Loss (TD to TX & RD to RX) -1.1 dB Max. 1-100 MHz
Return Loss (TD to TX & RD to RX) -16 dB Min. 1-40 MHz, with 100 ohm load
Return Loss (TD to TX & RD to RX) -10+20*log (f/80 MHz) dB Min. 40-100 MHz, with 100 ohm load
Cross Talk (Between Each Channel) -40 dB Min. 1-60 MHz
Cross Talk (Between Each Channel) -35 dB Min. 60-100 MHz
Common Mode Rejection (TD to TX & RD to RX) -37 dB Min. 1-60 MHz
Common Mode Rejection (TD to TX & RD to RX) -30 dB Min. 60-100 MHz
Differential to Common Mode Rejection Ratio (TD to TX & RD to RX) -35 dB Min. 30 MHz
Differential to Common Mode Rejection Ratio (TD to TX & RD to RX) -35 dB Min. 60 MHz
Hi-Pot (TD to TX & RD to RX) 1500 Vrms & 2250 Vdc @ 1 mA, 60 sec.
Storage Temperature -40 to +125 C
Operating Temperature -40 to +125 C
Moisture Sensitivity Level 1
Packaging Specifications 600 pcs./reel Tape & Reel
Dimensions (L x W) 12.80 0.25 mm (0.504 0.010 in) x 8.89 0.25 mm (0.350 0.010 in)
Height 6.90 0.25 mm (0.272 0.010 in)
Pin 1 Location 1.27 0.13 mm (0.05 0.005 in)
Pitch 1.27 mm (0.05 in) Typ.
Coplanarity 0.10 mm (0.004 in) Max.

Solder Profile Specifications (Pb Free Assembly):

  • Average Ramp-up Rate: 3 C/second max.
  • Preheat Temperature min. (Ts min): 150 C
  • Temperature max. (Ts max): 200 C
  • Time (ts min. to ts max.): 60 ~ 180 s
  • Liquidus Temperature (TL): 217 C
  • Time above Liquidus Temperature (tL): 60 ~ 150 s
  • Peak Temperature (TP): 245-250 C
  • Time within 5 C of Actual Peak Temperature (tp): 20 ~ 40 s
  • Ramp-down Rate from Peak Temperature: 6 C/s max.
  • Time 25 C to Peak (tTO PEAK): 8 minutes max.

2411272245_BOURNS-SM91072AL-E_C5754638.pdf


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