TO 38 Package

High-speed TO PLUS® headers for Quad applications up to 100G


SCHOTT TO PLUS® headers on TO 38 footprint are suitable to be used in GPON, XG-PON, 10GEPON, CPRI and 32G Fiber Channel. Single Channel or Quad for use in SFP28 or QSFP28 (CWDM4 or PSM4) transceivers.

Product features

  • Laser height can be customized.
  • Pre-attached submount with resistors optional.
  • AuSn Pad version is optional.

Product variants

Modul Speed OSA Type Fiber TO Can Description Function
SFF, SFP, SFP+, QSFP28 28 Gbps
Tx SMF TO-38, 25-Ohm,
3+1 submount
High Speed, For shared
MPD anode and cathode
pin out

Product images

TO 38 header with submount
TO 38 with components
4 x TO 38 Headers placed side-by-side

Product performance 

The simulation experiment results are as follows.

S11 (dB) – Reflection/Return Loss

S11 (dB) – Reflection/Return Loss

S11: Better than -15dB @40GHz for speeds of up to 25 Gbps.

S21 (dB) – Insertion Loss

S21 (dB) – Insertion Loss

S21: 3dB bandwidth better than 40GHz.

Product diagram for simulation test

Product diagram for simulation test