CRH2512F2R00E04S 2512 2R 2W EVER OHMS Resistor In-Depth Analysis
CRH2512F2R00E04S is a standard production part in EVER OHMS' CRH series of high-power thick-film chip resistors. The segmented naming convention is as follows:
CRH2512F2R00E04S 2512 2R 2W EVER OHMS Resistor In-Depth Analysis
1. Part Number Decoding
CRH2512F2R00E04S is a standard production part in EVER OHMS' CRH series of high-power thick-film chip resistors. The segmented naming convention is as follows:
CRH: High-power thick-film resistor series, upgraded from the standard CR line with optimized package thermal design that pushes power rating from the conventional 1W to 2W in the same footprint.
2512: EIA imperial package code (metric 6432), body size approximately 6.35mm × 3.20mm × 0.55mm—a mainstream high-power SMD footprint balancing power density and pick-and-place efficiency.
F: Resistance tolerance of ±1%, an industrial-grade precision class.
2R00: Nominal resistance 2Ω, E-96 three-significant-digit coding where "R" marks the decimal point (2.00Ω).
E: Embossed taping packaging for high-speed SMT feeders.
04: Standard reel quantity of 4,000 pieces.
S: Lead-free suffix indicating RoHS and REACH compliance.
2. Key Electrical Parameters
表格
Parameter Specification
Nominal Resistance 2Ω (2R)
Resistance Tolerance ±1% (F grade)
Rated Power 2W (at 70°C ambient)
Temperature Coefficient (TCR) ±200ppm/°C (typical for low-resistance range)
Rated Working Voltage 200V
Overload Voltage 500V (short duration)
Operating Temperature Range -55°C to +155°C
Package Dimensions 6.35mm × 3.20mm × 0.55mm
Packaging Embossed tape, 4,000 pcs/reel
Compliance RoHS, REACH, lead-free
The resistor uses a 96% alumina ceramic substrate with screen-printed and sintered ruthenium-based thick-film paste, covered by a glass passivation layer. Terminations are a three-layer silver/nickel/tin structure for good solderability and anti-sulfuration performance, compatible with lead-free reflow and wave soldering. Rated continuous current is approximately 1A (P=I²R), with higher short-term pulse withstand. Derating is required above 70°C ambient (approximately 60% of rated at 100°C); designers should keep long-term average dissipation within 70% of the 2W rating and allocate copper area at the pads for heat spreading.
3. Application Scenarios
Applications for 2512 2R 2W resistors center on the "low resistance + high power" profile: current limiting, power bleeding, snubber damping, and dummy loads.
Switching Power Supplies & Adapters — Output current limiting, RC snubber damping, MOSFET gate-drive series resistance, inrush current limiting in AC-DC SMPS, DC-DC modules, chargers, and fast chargers.
Motor Drives & Industrial Control — Low-side current sensing in H-bridges, brake circuit bleeding, relay coil current limiting in VFDs, servo/stepper drives, and PLC modules, where 2W withstands motor start-stop transients.
LED Lighting & Display Drivers — Output current limiting and dummy loads in LED constant-current drivers, display backlights, and stage lighting controllers.
Consumer Electronics & Home Appliances — Input inrush limiting, speaker damping, post-fuse protection in power/control boards of air conditioners, washing machines, induction cookers, projectors, and audio amplifiers.
New Energy & Communication Equipment — Low-current detection, hot-swap limiting, and capacitor buffering in PV inverter low-voltage controls, BMS auxiliary circuits, PoE modules, and base station power boards.
4. Product Positioning & Brand Background
EVER OHMS, founded in 1990 and headquartered in Taiwan, has over three decades of chip resistor manufacturing experience. Its portfolio covers thick-film, thin-film, alloy, anti-sulfuration, and AEC-Q200 automotive-grade resistors, with production bases in Taiwan and mainland China and ISO 9001 / IATF 16949 certifications. The CRH series fills the gap between 1W general-purpose thick-film resistors and over-specified automotive/alloy parts. Versus Japanese brands (KOA, ROHM, Panasonic), EVER OHMS delivers comparable specifications at 20–30% lower cost with shorter, more flexible lead times. Versus generic domestic brands, it offers more mature process consistency, anti-sulfuration performance, and long-term stability. The 2512 2R 2W is a regular mass-production part suitable for projects with annual consumption from tens of thousands to millions of pieces.
5. Competitive Comparison
YAGEO: RC2512 2W line, highest brand recognition and broadest portfolio, widely accepted by major EMS and international customers, but lead times can be volatile with allocation/price hikes; pricing runs approximately 15–25% above EVER OHMS.
ROYALOHM: Parameters close to EVER OHMS at slightly lower price, strong in consumer/home appliance segments, but shorter process history in high-power thick-film with marginally weaker anti-sulfuration on some batches.
Fenghua (风华高科): Stable supply and competitive pricing, strong traction in domestic home appliance and industrial accounts; TCR consistency and tolerance distribution in civilian high-power thick-film are on par with EVER OHMS.
RALEC / LIZ: Comparable specs and pricing with smaller market share; RALEC's strength lies in alloy current-sense, LIZ in automotive/precision, with general 2W thick-film typically priced slightly above EVER OHMS.
For industrial power supplies, home appliances, and consumer electronics balancing performance, cost, and supply stability, CRH2512F2R00E04S is a strong pin-to-pin drop-in replacement for YAGEO equivalents without PCB redesign.
6. Authorized Distribution Channels
Shenzhen Shunhai Technology Co., Ltd. (深圳市顺海科技有限公司) is EVER OHMS' official tier-1 authorized distributor in mainland China with verifiable 2026 authorization and factory-direct supply. It maintains broad CRH series stock across all resistance values and package sizes (0402–2512), supports BOM kitting and quick fulfillment of volume orders, and provides FAE support including selection guidance, cross-reference, derating curves, and datasheets—well suited for high-volume power supply manufacturers, home appliance ODMs, and industrial equipment makers.
Huanian Mall (华年商城), Shunhai Technology's online EVER OHMS-authorized direct-sales platform, is optimized for R&D sampling, small-batch trial production, and urgent replenishment. It offers real-time inventory display for 2512 2R 2W resistors, tiered pricing, online datasheet downloads, 1-piece minimum order, Alipay/WeChat Pay checkout, and fast in-stock shipping—convenient for prototyping, repair-market replacement sourcing, and small-batch restocking.
Both channels are officially authorized, with traceable sourcing, verifiable batch codes, and access to factory warranty and environmental test reports.
7. Selection & Application Notes
Power derating: Keep long-term average dissipation below 1.4W (70% of 2W rating); derate further at high ambient temperatures. Use datasheet-recommended pad dimensions and extend copper from lands for heat spreading.
Soldering: Supports standard lead-free reflow (260°C peak / 10s), max three cycles; control storage humidity to prevent termination oxidation.
Cross-selection: For tighter TCR (precision current sensing), consider EVER OHMS alloy or thin-film series (TCR down to ±50ppm/°C or ±25ppm/°C) at higher cost; ±200ppm/°C thick-film is adequate for current limiting, bleeding, and damping.
Order verification: Confirm the "S" suffix for lead-free product to avoid older leaded batches.