CRP Series Aluminum Nitride Thick Film Resistor
Thick film resistive element on aluminum nitride (AlN) substrate
Power ratings: 2.4W (CRP06) and 3.5W (CRP12) at 70°C
Resistance range: 3Ω to 2kΩ (model dependent)
Tolerance options: ±1% (E24/E96 series) and ±5% (E24 series)
TCR: ±150 ppm/°C (specified), ±120 ppm/°C typical
Operating temperature range: −55°C to +155°C
Lead (Pb)-free wraparound termination over nickel barrier
100% RoHS compliant
What are the CRP Series Aluminum Nitride Thick Film Resistor?
The CRP is a surface-mount thick film chip resistor engineered on an aluminum nitride (AlN) substrate — a material chosen for its exceptional thermal conductivity compared to conventional alumina. This substrate enables the CRP to dissipate significantly more heat per unit footprint, resulting in power ratings of 2.4W for the CRP06 (1206 package) and 3.5W for the CRP12 (2512 package), both specified at 70°C ambient. The combination of high power density, compact SMD form factor, and RoHS-compliant lead-free construction makes the CRP well suited to industrial and telecom power conversion equipment where board space is at a premium.
Two models cover a resistance range from 3Ω to 2kΩ (CRP12) and 10Ω to 2kΩ (CRP06), with tolerances of ±1% (E24/E96 series) and ±5% (E24 series). The temperature coefficient of resistance (TCR) is specified at ±150 ppm/°C and typically measured at ±120 ppm/°C, ensuring stable performance across the full −55°C to +155°C operating temperature range. Maximum operating voltage is 200V for both models, with operating voltage determined as the lower of √(P×R) or the stated maximum.
The CRP construction comprises nine discrete layers: an aluminum nitride substrate, bottom and top electrodes, edge electrode, nickel barrier layer, external electrode, thick film resistive layer, and primary and secondary overcoat layers. This multi-layer architecture provides robust mechanical integrity and consistent electrical performance under thermal cycling. Short-time overload performance is specified at 4.7W for 5 seconds (CRP06) and 7.7W for 5 seconds (CRP12), with a maximum resistance change of ±0.50%. Shelf life is two years from production date when stored between 15°C and 28°C at humidity below 80% RH.
CRP Series Aluminum Nitride Thick Film Resistor Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
Model: CRP
Resistor type: Aluminum nitride
Description: Chip
Power Rating: 2.4W, 3.5W
Resistance (Ω): 10~2k
Tolerance (%): ±1, ±5
TCR (ppm/C): 150
Applications of the CRP Series Aluminum Nitride Thick Film Resistor
Where RARA metal clad resistors are deployed in the field.
-Industrial power electronics — DC/DC converters and switch-mode power supplies requiring compact high-power SMD resistors
-Telecom infrastructure equipment — base station power regulation and signal conditioning
-Power factor correction (PFC) circuits and energy metering
-Motor drive snubber and protection circuits
-High-density power modules requiring low-profile surface-mount resistors
-Test and measurement equipment — precision load and attenuation networks
-LED driver and lighting control circuits
-Battery management systems (BMS) — cell balancing and discharge resistors
-IGBT and MOSFET gate resistors in high-frequency converter topologies
-Automotive and industrial sensor interface circuits
Related Products of the CRP Series Aluminum Nitride Thick Film Resistor
Model: CFS
Resistor type: Power film
Description: Carbon film, MELF
Power Rating: 1/4W~2W
Resistance (Ω): 1~1M
Tolerance (%): ±2, ±5
TCR (ppm/C): 350~1000
Model: TNP25, TNP45
Resistor type: Power film
Description: SMD surge protection
Power Rating: 25W, 45W
Resistance (Ω): 0.1~51k
Tolerance (%): ±1
TCR (ppm/C): 100
Model: RTS-01
Resistor type: Power film
Description: Heatsinkable thick film
Power Rating: 100W
Resistance (Ω): 0.1~1M
Tolerance (%): ±5, ±10
TCR (ppm/C): 100
Model: ARN
Resistor type: Aluminum nitride
Description: Chip
Power Rating: 1/2W, 1W, 2W, 6W
Resistance (Ω): 50~30.1k
Tolerance (%): ±0.1
TCR (ppm/C): 25, 50
Why Choose RARA Power Film Resistors
What sets RARA apart for engineers and procurement managers in industrial and automotive markets.
01
Precision Film Deposition
Accurate resistive film deposition yields tight tolerances down to ±0.1% and TCR as low as 25 ppm/°C — performance that wire wound construction cannot match.
02
Laser Trimmable
Many models can be laser trimmed post-manufacture for increased precision, making them suitable for calibration-critical applications in medical and test instrumentation.
03
Broadest Power Range
From 2W SMD chips to 2000W planar units and water-cooled models — a complete film resistor family sourced from a single ISO9001 and IATF16949 certified supplier.
04
Global Track Record
Trusted by Siemens, Rockwell, Toshiba, Schneider Electric, LG, and Hanwha — a customer list built on decades of consistent, certified performance.
