Anti-Corrosive Precision Chip Resistors
(PR)(PR) Anti-Corrosive Series of Moisture-Proof Chip Resistors for High Humidity Precision Applications Preview
Token Electronics has introduced a new line of anti-corrosive precision chip resistors that eliminates moisture concerns associated with typical Nickel Chromium precision resistors. The PR Series is an ideal low-cost alternative for expensive and hard-to-find tantalum nitride chip resistors.
A proprietary passivation layer is introduced between the nichrome resistive element with a superior alumina substrate and the epoxy overcoat to ensure stable performance and long life in the harshest and wettest environments.
In MIL-STD-202F method moisture testing, the PR Series demonstrated excellent stability over time and no significant shift in resistance after the 1000 hour life test. Applications require operation in humid or high moisture environments or have experienced corrosion problems with standard Nichrome thin film resistors. For those applications, long term extended humidity testing is essential before a part can be considered for usage on a design.
Designated the PR Series, it is available in industry standard 0402, 0603, 0805, 1206, 2010, to 2512 sizes and has a resistance range from 10 Ω to 1M Ω, with tolerances tight to ± 0.10% and TCRs as low as 25ppm/°C. The PR Series has an operating temperature range of -55°C to +155°C. The PR chip also offers outstanding electrical stability and environmental stability performance that would be expected from a precision resistor.
The standard packaging is tape and reel in 4Kpc, 5Kpc, and 10Kpc quantities depending on part size. Most sizes and resistance values are also offered in stock, making them an outstanding choice to support quick turn shortages. Pricing varies with size, tolerance, and TCR and ranges in reel quantities.
The chip PR series is lead-free and RoHS compliant. Detailed specifications, both mechanical and electrical,
please contact our sales representative for more information.
Features :
- Tight Tolerance down to ± 0.1%
- Wide R-Value Range 10 Ω ~ 1Meg Ω
- Extremely Low TCR down to ±25 PPM/°C
- Special Passivated NiCr Film for Anti-Acid and Anti-Damp
- Long Term Life Stability with Advance Thin Film Technology
- Demonstrated the Anti-Corrosion Claims Characterized by Ta2N
Applications :
- Telecommunication Device
- Automotive,Medical Equipment
- Outdoor Electronic Applications
- High-end Multimedia Electronics
- Automatic Equipment Controller
- High-end Computer, Industrial Equipment
(PR) Surface Mount Series Dimensions (Unit: mm)
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| Codes | L (Unit: mm) | W (Unit: mm) | T (Unit: mm) | D1 (Unit: mm) | D2 (Unit: mm) | |
| PR02 (0402) | 1.00±0.05 | 0.50±0.05 | 0.30±0.05 | 0.20±0.10 | 0.20±0.10 | |
| PR03 (0603) | 1.55±0.10 | 0.80±0.10 | 0.45±0.10 | 0.30±0.20 | 0.30±0.20 | |
| PR05 (0805) | 2.00±0.15 | 1.25±0.15 | 0.55±0.10 | 0.30±0.20 | 0.40±0.25 | |
| PR06 (1206) | 3.05±0.15 | 1.55±0.15 | 0.55±0.10 | 0.42±0.20 | 0.35±0.25 | |
| PR10 (2010) | 4.90±0.15 | 2.40±0.15 | 0.55±0.10 | 0.60±0.30 | 0.50±0.25 | |
| PR12 (2512) | 6.30±0.15 | 3.10±0.15 | 0.55±0.10 | 0.60±0.30 | 0.50±0.25 | |
Anti-Corrosive Precision Chip (PR) Standard Electrical Specifications
| Type | Power Ratingat 70°C |
Operating Temp. Range |
Max Operating Voltage |
Max Overloading Voltage |
Resistance Tolerance | Resistance Range |
TCR |
| PR02 (0402) | 1/16W | -55 ~ +155°C | 25V | 50V | ±0.10% ±0.25% ±0.50% |
25Ω~25KΩ | ±25PPM / °C ±50PPM / °C |
| PR03 (0603) | 1/16W | -55 ~ +155°C | 50V | 100V | ±0.10% ±0.25% ±0.50% |
25Ω~332KΩ | ±25PPM / °C ±50PPM / °C |
| PR05 (0805) | 1/10W | -55 ~ +155°C | 100V | 200V | ±0.10% ±0.25% ±0.50% |
10Ω~800KΩ | ±25PPM / °C ±50PPM / °C |
| PR06 (1206) | 1/8W | -55 ~ +155°C | 150V | 300V | ±0.10% ±0.25% ±0.50% |
10Ω~1MΩ | ±25PPM / °C ±50PPM / °C |
| PR10 (2010) | 1/4W | -55 ~ +155°C | 150V | 300V | ±0.10% ±0.25% ±0.50% |
10Ω~1MΩ | ±25PPM / °C ±50PPM / °C |
| PR12 (2512) | 1/2W | -55 ~ +155°C | 150V | 300V | ±0.10% ±0.25% ±0.50% |
10Ω~1MΩ | ±25PPM / °C ±50PPM / °C |
Thin Film Chip Resistors (PR) Recommend Land Pattern (Unit: mm)
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| Codes | A (Unit: mm) | B (Unit: mm) | C (Unit: mm) | |
| PR12 (2512) | 4.90 | 1.60 | 3.10±0.2 | |
| PR10 (2010) | 3.60 | 1.40 | 2.50±0.2 | |
| PR06 (1206) | 2.00 | 1.15 | 1.70±0.2 | |
| PR05 (0805) | 1.00 | 1.00 | 1.35±0.2 | |
| PR03 (0603) | 0.80 | 1.00 | 0.90±0.2 | |
| PR02 (0402) | 0.50 | 0.50 | 0.60±0.2 | |
Surface Mount Chip (PR) Packaging Quantity & Reel Specifications (Unit: mm)
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| Codes | ΦA (Unit: mm) | ΦB (Unit: mm) | ΦC (Unit: mm) | W (Unit: mm) | T (Unit: mm) | Paper Tape (PCS) |
Emboss Plastic Tape (PCS) |
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| PR02 (0402) | 178.0±1.0 | 60.0±1.0 | 13.5±0.7 | 9.5±1.0 | 11.5±1.0 | 10,000 | - | |
| PR03 (0603) | 178.0±1.0 | 60.0±1.0 | 13.5±0.7 | 9.5±1.0 | 11.5±1.0 | 5,000 | - | |
| PR05 (0805) | 178.0±1.0 | 60.0±1.0 | 13.5±0.7 | 9.5±1.0 | 11.5±1.0 | 5,000 | - | |
| PR06 (1206) | 178.0±1.0 | 60.0±1.0 | 13.5±0.7 | 9.5±1.0 | 11.5±1.0 | 5,000 | - | |
| PR10 (2010) | 178.0±1.0 | 60.0±1.0 | 13.5±0.7 | 13.5±1.0 | 15.5±1.0 | - | 4,000 | |
| PR12 (2512) | 178.0±1.0 | 60.0±1.0 | 13.5±0.7 | 13.5±1.0 | 15.5±1.0 | - | 4,000 | |
Surface Mount Chip (PR) Paper Tape Specifications (Unit: mm)
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| Codes | A | B | W | E | F | P0 | P1 | P2 | ΦD0 | T | |
| PR02 | 0.70±0.05 | 1.16±0.05 | 8.00±0.10 | 1.75±0.05 | 3.5±0.05 | 4.00±0.10 | 2.00±0.05 | 2.00±0.05 | 1.55±0.05 | 0.40±0.03 | |
| PR03 | 1.10±0.05 | 1.90±0.05 | 8.00±0.10 | 1.75±0.05 | 3.5±0.05 | 4.00±0.10 | 4.00±0.10 | 2.00±0.05 | 1.55±0.05 | 0.60±0.03 | |
| PR05 | 1.60±0.05 | 2.37±0.05 | 8.00±0.10 | 1.75±0.05 | 3.5±0.05 | 4.00±0.10 | 4.00±0.10 | 2.00±0.05 | 1.55±0.05 | 0.75±0.05 | |
| PR06 | 2.00±0.05 | 3.55±0.05 | 8.00±0.10 | 1.75±0.05 | 3.5±0.05 | 4.00±0.10 | 4.00±0.10 | 2.00±0.05 | 1.55±0.05 | 0.75±0.05 | |
Surface Mount Chip (PR) Emboss Plastic Tape Specifications (Unit: mm)
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| Codes | A ±0.10 |
B ±0.10 |
W ±0.10 |
E ±0.10 |
F ±0.05 |
P0 ±0.05 |
P1 ±0.10 |
P2 ±0.05 |
ΦD0 +0.10 |
T ±0.20 |
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| PR10 | 2.85 | 5.45 | 12.0 | 1.75 | 5.5 | 4.00 | 4.00 | 2.00 | 1.50 | 1.00 | |
| PR12 | 3.40 | 6.65 | 12.0 | 1.75 | 5.5 | 4.00 | 4.00 | 2.00 | 1.50 | 1.00 | |
(PR) Environmental Characteristics
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| Test Item | Specification | Test Method | ||
| Size 0603/0805/1206/2010/2512 | Size 0402 | |||
| Short Time Overload | ≤ ±0.02% | ≤ ±0.1% | RCWV*2.5 or Max Overloading Voltage, 2 seconds | |
| Thermal Shock | ≤ ±0.02% | ≤ ±0.1% | MIL-STD-202F Method 107G -55°C~125°C, 100 cycles |
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| Load Life | ≤ ±0.05% | ≤ ±0.25% | MIL-STD-202F Method 108A RCWV, 70°C, 1.5 hours ON, 0.5 hours OFF, total 1000~1048 hours |
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| Humidity (Steady State) |
≤ ±0.05% | ≤ ±0.5% | MIL-STD-202F Method 103B 40°C, 90~95%RH, RCWV 1.5 hours ON, 0.5 hours OFF, total 1000~1048 hours |
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| Resistance to Dry Heat |
≤ ±0.05% | ≤ ±0.5% | JIS-C-5202-7.2 1000 hours @ +155°C without load |
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| Resistance to Soldering Heat |
≤ ±0.02% | ≤ ±0.1% | MIL-STD-202F Method 210E 260±5°C, 10±1seconds |
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| Solderability | 95%min coverage | MIL-STD-202F Method 208H 245°C±5°C, 3±0.5(sec) |
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| Note: Storage Temperature: 25±3°C; Humidity: <80%RH |
Anti-Corrosive Precision Chip Resistor (PR) Order Codes
| PR | 02 | D | TR | C3 | 1002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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