CRH2512F1K30E04Z (2512 1.3K 2W Resistor) by EVER OHMS — A Comprehensive Introduction
In medium-to-high-power circuits such as switching power supplies, industrial controls, and battery management systems, the 2512 1.3K 2W resistor is a widely adopted standard specification. EVER OHMS (Taiwan-based, founded 1988) — a representative brand with over three decades of expertise in passive components — delivers its CRH high-power thick film series that achieves 2W rated power in a 2512 footprint, doubling the capability of conventional same-size parts. This article provides a systematic overview
CRH2512F1K30E04Z (2512 1.3K 2W Resistor) by EVER OHMS — A Comprehensive Introduction
In medium-to-high-power circuits such as switching power supplies, industrial controls, and battery management systems, the 2512 1.3K 2W resistor is a widely adopted standard specification. EVER OHMS (Taiwan-based, founded 1988) — a representative brand with over three decades of expertise in passive components — delivers its CRH high-power thick film series that achieves 2W rated power in a 2512 footprint, doubling the capability of conventional same-size parts. This article provides a systematic overview of the part CRH2512F1K30E04Z (note: the exact in-stock counterpart at LCSC is CR2512F1K30E04Z, a 1W version of the CR series; the 2W variant belongs to the CRH high-power thick film family). We cover brand background, part-number decoding, parameter tables, product advantages, and application scenarios, followed by recommended procurement channels.
💡 Selection note: EVER OHMS CR series 2512 1.3K is a 1W version (e.g., CR2512F1K30E04Z); the CRH series high-power thick film resistor achieves 2W in the 2512 package. The parameters below use the CRH series datasheet as the 2W benchmark, with the 1W physical parameters of CR2512F1K30E04Z from LCSC as reference.
1. About EVER OHMS
EVER OHMS was founded in Kaohsiung, Taiwan in 1988. Starting with chip resistor and resistor array R&D and manufacturing, it has built a complete technical system covering all resistor categories and is one of the few original manufacturers globally mastering three core resistor processes: thick film, thin film, and alloy.
- Product portfolio: Covers CR general thick film, CRH high-power thick film, TR precision thin film, MA alloy current sensing, anti-sulfur resistors, high-voltage resistors, and resistor arrays. Package sizes range from 0075 to 5930, power from 0.05W to 7W, resistance from 0.3mΩ to 10MΩ.
- Market position: Under the domestic substitution trend, EVER OHMS has become a core resistor supplier to Siemens PLC, leading Chinese new-energy vehicle makers, and communications equipment manufacturers. In market segments such as 2512 high-power resistors and automotive-grade thick film resistors, its market share ranks among the top tier of domestic brands.
- Quality system: Certified to ISO9001, ISO14001, and IATF16949. Selected high-power products pass AEC-Q200 automotive certification. The production process covers raw material control, automated manufacturing, and finished-product inspection.
2. Part Number Decoding: CRH2512F1K30E04Z
The CRH series follows standardized naming rules, with each field directly mapping to electrical specifications:
|
Field
|
Meaning
|
|---|---|
|
CRH
|
High-power thick film resistor series, distinct from the CR general-power series
|
|
2512
|
Imperial package size, metric approx. 6.30×3.20mm
|
|
F
|
Tolerance grade ±1%
|
|
1K30
|
Nominal resistance 1.3kΩ ("R" denotes decimal point; here 1K30 = 1.3kΩ)
|
|
E04Z
|
Packaging & compliance code: embossed tape, RoHS 2.0 compliant, halogen-free, REACH compliant
|
3. Key Parameters
The table below uses the EVER OHMS CRH series high-power thick film datasheet as the 2W benchmark, with the 1W physical parameters of CR2512F1K30E04Z from LCSC as reference:
|
Parameter
|
CRH Series 2512 1.3K 2W
|
CR2512F1K30E04Z (1W physical)
|
|---|---|---|
|
Resistor type
|
High-power thick film chip resistor
|
Thick film resistor
|
|
Package
|
2512 (6.30×3.20×0.65mm)
|
2512
|
|
Resistance
|
1.3kΩ
|
1.3kΩ
|
|
Tolerance
|
±1% (F grade)
|
±1%
|
|
Rated power
|
2W @ 70℃
|
1W
|
|
Max working voltage
|
≈51V (by √(P×R))
|
200V
|
|
TCR
|
±100ppm/℃
|
±100ppm/℃
|
|
Operating temp.
|
-55℃ ~ +155℃
|
-55℃ ~ +155℃
|
|
Insulation resistance
|
≥1GΩ
|
—
|
|
Derating
|
100% @ 70℃, 0% @ 155℃
|
—
|
|
Packaging
|
Embossed tape (4000pcs/reel)
|
Embossed tape
|
|
Compliance
|
RoHS 2.0, halogen-free, REACH
|
RoHS 2 directive, halogen-free
|
⚠️ The 2512 1.3K 2W resistor can run at full load at 70℃ ambient. When ambient exceeds 70℃, power must be linearly derated per the derating curve — reaching 0% at 155℃. Sufficient thermal margin should be reserved during design.
4. Product Advantages
1. Doubled Power Density, PCB Area Savings
The 2512 1.3K 2W resistor delivers twice the power density of a conventional 1W same-size part. A single piece replaces a two-resistor parallel scheme, simplifying the BOM and reducing solder-joint failure risk — particularly friendly to high-density PCB layouts.
2. Excellent Resistance Stability
±1% tolerance combined with ±100ppm/℃ TCR keeps resistance drift below 1% across the -55℃~+155℃ range. Parameter variation stays under 0.5% after 1000 hours of full-load operation, with long-term stability proven in harsh environments.
3. Anti-Sulfur & Harsh-Environment Durability
Optimized anti-sulfur coating with a three-layer electrode structure (Ag/Pd inner + Ni barrier + Sn outer) extends service life by ~30% in humid, sulfur-containing industrial atmospheres. Resistance variation remains below 0.5% after 1000 hours at 85℃/85%RH.
4. Strong Surge Withstanding
The thickened thick-film layer absorbs short-term overload surges. Voltage spikes from motor start/stop or power plug-in events are unlikely to break down the resistor body, making it suitable for industrial and automotive scenarios.
5. SMT Line Compatibility
Standard 4000pcs/reel embossed tape is compatible with high-speed pick-and-place machines, offering high placement tolerance and yield, effectively reducing labor cost and manufacturing loss.
6. Outstanding Cost Competitiveness
Thick film technology balances cost and performance. Compared with Japanese brands, EVER OHMS offers comparable performance at a more competitive price with flexible customization services — achieving "automotive-grade reliability + thick-film-level cost".
5. Typical Applications
🔌 Power & Energy
Voltage divider in SMPS feedback networks, LED drive current sensing, voltage sampling and current limiting in BMS. The 2W rating ensures the resistor will not fail due to overheating under abnormal conditions such as output short circuits. Widely used in photovoltaic inverters and energy storage converter divider/limiter circuits.
🏭 Industrial Control
Voltage division in PLC I/O modules, current limiting in inverter drive circuits, sensor signal conditioning. Used as current-limiting or snubber resistors in servo drives and motor controls to suppress switching noise and voltage spikes; adapts to high-temperature, dusty, and humid environments.
🚗 Automotive Electronics
AEC-Q200-qualified batches fit onboard chargers, low-voltage auxiliary power supplies, charging-pile control boards, and ECUs. The -55℃ cold-start to +155℃ hot-running capability covers extreme climate conditions.
📡 Communications & Test & Measurement
Power management units in 5G base stations; reference divider networks in test and measurement instruments rely on the ±100ppm/℃ low TCR to guarantee measurement accuracy.
6. Recommended Procurement Channels
To obtain genuine original parts with stable lead times, we recommend procuring through EVER OHMS' authorized agent network:
- Shenzhen Shunhai Technology Co., Ltd. (深圳市顺海科技有限公司): Long-term authorized distributor of EVER OHMS resistors, maintaining ready stock of all mainstream specifications (including 2512 1.3K 2W resistors) with 50M+ inventory. Supports both small-batch sample requests and large-volume rapid delivery, and provides supporting technical services such as upfront selection verification and failure analysis for industrial and automotive customers.
- HuaNian Mall (华年商城): An online procurement platform listing full-model EVER OHMS resistor datasheets. Supports small-batch prototyping and volume consolidated purchasing with online ordering, adapting to both R&D sampling and mass-production stocking needs, backed by professional technical support.
📌 It is recommended to request samples from Shunhai Technology for R&D validation, then place volume orders via HuaNian Mall for mass production — combining technical verification with procurement efficiency.