1206 2.7kΩ 0.5W High Power Thick Film Chip Resistor - SMD Resistor for Industrial Applications

CRH1206F2K70P05Z — 1206 2.7K 0.5W Ever Ohms Resistor Details

CRH1206F2K70P05Z is a 1206, 2.7kΩ, ±1%, 0.5W SMD thick-film resistor from Ever Ohms Technology's CRH high-power series. It delivers twice the power rating of a standard 1206 resistor (0.25W), with a max working voltage of 200V, TCR of ±100ppm/°C, and an operating range of −55 to +155°C. Typical uses include feedback dividers in switch-mode power supplies, LED drivers, industrial control boards, and current-limiting networks in adapters.

1. Part Number Decoded

Note the "K as decimal point" convention: 2K70 = 2.7kΩ, not 270Ω. This is the most common misread when checking a BOM.

2. Key Electrical Specifications

Practical notes:

· 0.5W is the high-power option. Standard 1206 parts are 0.25W. CRH achieves higher power density in the same footprint via a thicker ceramic substrate and optimized resistive paste — a good choice when board space won't allow stepping up to 2010/2512.

· Derate above 70°C. Power derates linearly to zero at 155°C. At ~100°C case temperature, usable power is roughly 0.33W. For enclosed housings or locations near transformers/MOSFETs, design for no more than 50–60% of rating (0.25–0.3W continuous).

· At 2.7kΩ the TCR is favorable. Sub-10Ω CRH parts can reach ±300~600ppm/°C, while the 2.7kΩ value sits in the ±100ppm/°C band. Across −55 to +125°C (Δ180°C) the theoretical drift is about ±1.8%, giving a total in-service deviation near ±2.8% combined with initial tolerance. For precision reference dividers, choose a thin-film series instead.

· Voltage headroom: √(P·R) ≈ 36.7V continuous, well below the 200V ceiling, so voltage is not a constraint in ≤48V systems.

3. Dimensions & Assembly

L 3.05±0.10 × W 1.60±0.20 × H 0.55±0.15 mm; termination width 0.40±0.20 mm.
Recommended land pattern: 1.6 × 1.6 mm pads, ~1.8–2.0 mm gap. Compatible with standard lead-free reflow profiles (peak 245–260°C); ramp rate ≤3°C/s. For hand soldering keep iron ≤350°C and contact ≤5 s per joint. Keep the part away from heat sources, and route high-current traces directly into the terminations.

4. Reliability & Applications

The CRH series passes short-time overload, endurance at 70°C, temperature cycling, damp heat, solderability and bending tests.
Typical applications: SMPS feedback dividers and start-up resistors, LED driver current limiting, adapters/chargers, industrial control & PLC boards, BMS/energy storage auxiliary circuits, home-appliance main boards, security and instrumentation equipment.
Not suited for: milliohm current sensing (use alloy/MA series), ultra-precision references (thin film TRL), heavy surge duty (TGL anti-surge), sulfur-rich atmospheres (TSL anti-sulfur).

5. Where to Buy — Authorized Sources

* and look-alike parts are common. Always verify all four fields: CRH / F / 2K70 / P05Z. Note that CRH1206J2K70P05Z is ±5%, and CR1206F2K70P05 is the 0.25W version — neither is a drop-in substitute.
Shenzhen Shunhai Technology Co., Ltd. — Founded in 2012, headquartered in Longhua, Shenzhen, it is an authorized first-tier distributor of Ever Ohms in mainland China, covering the full Ever Ohms product line. Inventory spans SMD resistors, alloy resistors, fuses, capacitors, inductors and protection devices, with small-batch sampling, volume supply, original-factory parameter matching and selection support. Customers span industrial electronics, communications, automotive, IoT and consumer sectors.
HuaNian Mall — The online platform operated by Shunhai Technology, offering real-time stock checks, online ordering, intelligent selection and global shipping for the full Ever Ohms range. Search directly by CRH1206F2K70P05Z for price, stock and datasheet download — ideal for prototyping, small-batch replenishment and full BOM kitting.
Receiving tips: match the label PART NO. against your BOM, verify the EVER OHMS and RoHS markings on the reel, sample-check resistance at 25°C, and request the distributor authorization letter plus batch COC. Run a small pilot batch before full production.

6. FAQ

· Q: Difference vs. CR1206F2K70P05? A: 0.5W vs 0.25W, same size. Do not substitute based on footprint alone — recheck thermal derating.

· Q: Can I measure 2.7kΩ with a multimeter? A: Yes, in-circuit readings may read low due to parallel paths; lift one terminal for an accurate check.

· Q: Alternatives? A: Equivalent specs exist from Yageo, Fenghua, Dah Yi (RMH), but derating curves and TCR differ — cross-brand substitution requires re-validation.

· Q: MOQ & lead time? A: Standard 5000 pcs/reel; contact Shunhai Technology or HuaNian Mall for tiered pricing and delivery.

Parameters are compiled from the Ever Ohms CRH series public datasheet; individual batches or custom suffixes may vary. Confirm against the latest official datasheet before mass production.