The TPSE157M010R0100: The 100 mOhm ESR is the spec that governs ripple handling in a bulk decoupling role — at 100 kHz, the ripple current capability is roughly 1.2 A RMS, enough for a moderate-load POL regulator output. The E case (2917 metric, 7.30 x 4.30 mm) is a standard footprint for this capacitance and voltage combination — it fits the common 7343-31 pad layout used across the industry, so a PCB designed for a generic E-case tantalum accepts this part without a footprint change.
Temperature sweep and ESR stability
Rated for -55°C to 125°C, this cap operates across the full industrial and military temperature band. Tantalum ESR rises at low temperature — expect the 100 mOhm at 25°C to roughly double at -55°C, which still keeps ripple current within safe limits for most POL rails. The ±20% tolerance is standard for tantalum; the actual capacitance at 0 VDC bias is near the high end, and it drops about 10-15% at rated voltage due to DC bias effect.
Active lifecycle — sourcing for production and repair
The part is not held in ready inventory by us, but the active status means standard factory lead times apply — typically 8-12 weeks for volume, with faster turnaround on sample quantities through distribution.