1206 16Ω 0.5W High Power Thick Film Chip Resistor for Industrial and Automotive

CRH1206F16R0P05Z Datasheet Overview: 1206 16R 0.5W Ever Ohms Chip Resistor
CRH1206F16R0P05Z is a standard part number in the EVER OHMS (天二科技) CRH high power thick film chip resistor family, commonly referenced in design and purchasing as a "1206 16R 0.5W Ever Ohms chip resistor." It delivers 0.5W rated power in the standard 1206 (metric 3216) footprint, with 16Ω nominal resistance and ±1% tolerance, and is typically used for current limiting, voltage division, discharge and sensing functions in power supplies, industrial control and automotive circuits.

1. Part Number Breakdown

2. Key Electrical Parameters

Compiled from the published EVER OHMS CRH series specification; verify against the latest original datasheet before mass production.

At 16Ω the limiting factor is power and current rather than the 200V voltage rating.

3. Why 0.5W Is Achievable in 1206

• Ceramic substrate conduction. A 96% alumina substrate conducts heat far better than conventional substrates, moving heat from the resistive element to the terminations and PCB copper, which reduces self-heating and high-temperature drift.
• Element and termination geometry. Ruthenium oxide thick film paste is fired at high temperature, and the overlapping area between the resistive layer and terminations is enlarged, lowering thermal resistance and improving current distribution.
• Protection and termination system. A glass glaze coating provides moisture and mechanical protection; the nickel barrier with lead-free tin outer layer suppresses sulfurization and electrochemical migration in humid or sulfur-bearing environments.

4. Power, Current and Derating

• Rated current: I = √(P/R) = √(0.5/16) ≈ 0.177A (about 177mA)
• Corresponding rated voltage: U = √(P×R) ≈ 2.83V
• Derating: linear derating above 70℃, reaching zero at 155℃. A practical design target is 60%–70% of rating, i.e. 0.3–0.35W continuous
• Thermal design: connect both pads to ≥2oz copper with thermal vias; junction-to-ambient thermal resistance depends strongly on copper area, so measure temperature rise on the actual board
• Pulse capability: check the pulse withstand curve in the datasheet for startup, motor start/stop and other surge conditions instead of relying on average power alone

5. Assembly and Process Compatibility

• Lead-free reflow peak within 260℃/10s (per J-STD-020); the same limit applies to wave soldering. Multiple passes should be evaluated for termination and joint reliability
• Stencil apertures follow standard 1206 ratios; keep both pads symmetric to avoid tombstoning and placement-free placement
• Halogen residues from cleaning accelerate terminal corrosion; in humid or outdoor use, choose a sulfur-resistant version or apply conformal coating

6. Typical Applications

• Power: soft-start limiting, MOSFET gate discharge, dummy load and start-up resistors in AC-DC / DC-DC modules
• Industrial control: PLC I/O pull-up and limiting, sensor signal conditioning, divider and sampling networks
• Automotive and energy: BMS balancing, charge-circuit discharge, auxiliary supply dividers (confirm the AEC-Q200 qualified version for automotive programs)
• Instrumentation: reference dividers and front-end current sensing

7. Selection and Substitution Notes

• A standard CR1206 0.25W 16Ω device is not a drop-in replacement; the power rating differs by a factor of two
• When substituting equivalent parts, verify TCR band, maximum working voltage, termination finish and packaging code rather than matching only "1206 16R 0.5W"
• Cross-value substitution changes the TCR band below and above 10Ω; recalculate the drift budget in precision sensing paths
• For supply, Shenzhen Shunhai Technology Co., Ltd. is an authorized distributor for EVER OHMS and other passive component brands, providing original datasheets, batch traceability and selection support. Prototyping and small-volume orders can be placed through its self-operated online platform Huanian Mall, which helps control stock availability and lead time for multi-item BOMs

8. Frequently Asked Questions

1. Q1: Can a 16Ω 0.5W 1206 resistor withstand 200V directly?
   No. 200V is the series maximum working voltage; at 16Ω the power-limited voltage is about 2.83V.
2. Q2: How to distinguish it from a 0.25W 1206 16Ω part?
   Dimensions are similar, so rely on part number, reel label and datasheet, and confirm with a derating test when necessary.
3. Q3: How to ensure long-term stability at high temperature?
   Apply temperature derating, increase pad copper and via dissipation, select sulfur-resistant or automotive grades where required, and confirm the temperature rise in system-level thermal analysis.