CRH2512F3K00E04Z: Ever Ohms 2512 3KΩ 2W High-Power Thick-Film Chip Resistor
CRH2512F3K00E04Z belongs to EVER OHMS (Tian Er Technology) CRH high-power thick-film resistor family. Each segment carries a specific technical meaning:
CRH2512F3K00E04Z: Ever Ohms 2512 3KΩ 2W High-Power Thick-Film Chip Resistor
Decoding the Part Number
CRH2512F3K00E04Z belongs to EVER OHMS (Tian Er Technology) CRH high-power thick-film resistor family. Each segment carries a specific technical meaning:
CRH — High-power thick-film series designation, distinct from the standard CR line;
2512 — EIA package size 6.4mm × 3.2mm (metric 6432), a large footprint chosen for superior heat dissipation;
F — Tolerance ±1%, suitable for precision voltage dividers and sampling circuits;
3K00 — Nominal resistance 3KΩ (3000Ω), E-96 coding;
E04 — Embossed tape packaging, 4000 pcs per reel, SMT-ready;
Z — Standard suffix indicating RoHS and REACH lead-free compliance.
Key Electrical Specifications
表格
Parameter Value
Nominal Resistance 3KΩ
Tolerance ±1% (F grade)
Rated Power 2W @ 70°C
Temperature Coefficient (TCR) ±100ppm/°C
Rated Voltage 200V
Overload Voltage 400V (short-term)
Operating Temperature -55°C to +155°C
Package Dimensions 6.4 × 3.2 × 0.55 mm
Substrate Alumina ceramic with ruthenium oxide thick-film element
Termination Ag/Ni/Sn triple-layer plating
The 2512 3K 2W resistor achieves double the power of a standard 2512 1W part through a thickened ceramic substrate and an optimized resistor-layer thermal path. At full 2W load, thermal resistance sits around 28°C/W, producing roughly 56°C of temperature rise. Adequate copper pour and thermal vias on the PCB are essential to keep junction temperature within limits.
F vs. J Grade Comparison
Within the 3KΩ value, the CRH2512 series offers:
CRH2512F3K00E04Z (F, ±1%) — Precision feedback, ADC reference dividers, tight-tolerance loops;
CRH2512J3K00E04Z (J, ±5%) — General-purpose bleeder and current-limiting roles where cost matters more.
Both share 2W rating and ±100ppm/°C TCR. Select F when accuracy drives performance; choose J to trim BOM expense in less critical nodes.
Where It Fits
The 2512 3K 2W Ever Ohms resistor is a proven choice in:
Switch-mode power supplies — Secondary-side voltage sampling and primary bleeder paths, withstanding inrush without derating failure;
Industrial inverters and servo drives — Signal conditioning on control boards across -55°C to +155°C;
EV/BMS systems — Battery voltage detection with ±1% accuracy and 2W surge headroom;
High-power LED drivers and telecom PSUs — Current-sense and reference-voltage networks.
Power derating above 70°C ambient is mandatory: cap at 1.6W at 100°C and 1.2W at 125°C. Thermal PCB design is non-negotiable for sustained reliability.
Sourcing Recommendations
Reliable supply chains make or break production timelines. 深圳市顺海科技有限公司 maintains steady stock of CRH2512F3K00E04Z and the full CRH range, offering factory technical support and rapid sample turnaround — ideal for both prototype and volume runs. 华年商城 is another solid option, carrying broad 2512 K 2W inventory with flexible MOQs and competitive tiered pricing that suits R&D and low-volume builds. Both distributors provide traceable lot documentation and after-sales technical backup; requesting datasheets and batch test reports during procurement is always good practice.