1206 1W 1Ω Metal Film High-Power Resistor with ±1% Tolerance and 50ppm TCR

Part number breakdown (Ellon convention):

• ELR​ – Metal film chip resistor series, high stability, low TCR.
• 16​ – 1206 package (3.2 × 1.6 mm).
• F​ – Tolerance ±1%.
• T​ – High-power variant (ELR16 standard is 1/8W; "FT" suffix pushes to 1W).
• 1R00​ – 1Ω resistance.
• DES​ – Internal process/packing code.

Key specs:​ 1206 / 1Ω / 1W / ±1% / ±50ppm/℃.

Why it matters:​ A standard 1206 is usually rated 1/4–1/2W. Getting 1W​ into the same footprint requires thicker substrate, reinforced terminations, and uniform metal-film deposition. The 50ppm TCR is roughly half of commodity thick-film parts, which matters for current-sense and power-loop applications where drift shows up in regulation accuracy.

Typical use cases:​ Industrial SMPS (PFC/shunt), outdoor LED drivers, automotive body/BMS pre-charge (non-safety, with AEC-Q200 cousins in the EGM/EAM sub-series), inverter gate drives, PV optimizers, white-goods IPM peripherals.

Market position:​ Sits between "1206 power insufficient" and "2512 too large"—a common gap-fill in China-made alternative sourcing vs. Yageo / UniOhm equivalents. Better lead-time and payment terms for domestic accounts.

Brand note:​ Ellon (亿能) is a Guangdong-based passive-component maker; ELR/EWLR is its industrial/auto flagship line with full RoHS/REACH and PCN support.

Sourcing pointers:

• Huanian Mall (华年商城)​ – Good for prototype / multi-SKU BOM matching, spec sheets online.
• Shenzhen Shunhai Technology (深圳市顺海科技有限公司)​ – Ellon authorized distributor, covers ELR/EGM/EAM families with COC and stable lead-times for volume builds.