RI82 flat (chip-style) high-voltage resistors
Flat ceramic body, 0.25 W to 100 W, up to 60 kV
0.25–100 W · withstanding up to 4–60 kV
RI82 flat type — zig-zag resistance element on an alumina substrate
Flat-bodied high-voltage resistors on a 96% alumina substrate with a zig-zag glass-glaze resistance element. The flat profile keeps board height down and the large surface area dissipates heat efficiently, so the series covers 0.25 W to 100 W in a much smaller volume than an equivalent round resistor. Body lengths run from 10 mm to 182 mm, with withstanding voltages to 60 kV, and lead pitch is specified per type so the part drops straight into an existing footprint.
Materials
| Substrate | 96% Al2O3 alumina ceramic |
| Resistive element | Glass-glaze resistance film |
| Termination / leads | Tinned copper |
| Encapsulation | Resin |
| Operating medium | Air (see notes — rating improves substantially when oil-immersed or resin-potted) |
Encapsulation: resin.
Notes on ratings
- Where both a rated voltage and a maximum working voltage are given, use the lower of the two.
- Pulse peak power must stay below 100× the rated power.
Specification — RI82 flat
38 body sizes. Values are the manufacturer figures, reproduced in full.
| Type | Power (W) | H (mm) | L (mm) | T (mm) | Pitch P (mm) | Lead L (mm) | Lead Ø (mm) | Resistance range | Withstanding (VR) | Tolerance | TCR |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RI82-0309 | 0.25 | 4 | 10 | 2 | 8 | 12 | 0.5 | 1K–100G | 5,000 | F G J K | ±5–±200 |
| RI82-0312 | 0.25 | 4 | 13 | 2 | 10 | 12 | 0.5 | 1K–100G | 6,000 | F G J K | ±5–±200 |
| RI82-0314 | 0.25 | 4 | 15 | 2 | 12.6 | 12 | 0.5 | 1K–100G | 6,000 | F G J K | ±5–±200 |
| RI82-0407 | 0.25 | 5.5 | 8 | 2 | 6 | 12 | 0.5 | 1K–100G | 4,000 | F G J K | ±5–±200 |
| RI82-0317 | 0.5 | 4 | 18 | 2 | 15 | 15 | 0.5 | 1K–100G | 7,000 | F G J K | ±5–±200 |
| RI82-0319 | 0.5 | 4 | 20 | 2 | 17.8 | 15 | 0.5 | 1K–100G | 7,000 | F G J K | ±5–±200 |
| RI82-0322 | 0.5 | 4 | 23 | 2 | 20 | 15 | 0.5 | 1K–100G | 8,000 | F G J K | ±5–±200 |
| RI82-0510 | 0.5 | 7 | 11 | 2 | 8 | 15 | 0.5 | 1K–100G | 5,000 | F G J K | ±5–±200 |
| RI82-0515 | 0.5 | 7 | 16 | 2 | 13 | 15 | 0.5 | 1K–100G | 6,000 | F G J K | ±5–±200 |
| RI82-0609 | 0.5 | 8 | 10 | 2 | 7.62 | 15 | 0.5 | 1K–100G | 4,000 | F G J K | ±5–±200 |
| RI82-0415 | 0.5 | 6 | 16 | 2 | 13.5 | 15 | 0.5 | 1K–100G | 6,000 | F G J K | ±5–±200 |
| RI82-0518 | 1 | 7 | 19 | 2.5 | 16 | 15 | 0.5 | 1K–100G | 7,000 | F G J K | ±5–±200 |
| RI82-0522 | 1 | 7 | 23 | 2.5 | 20.32 | 15 | 0.6 | 1K–100G | 10,000 | F G J K | ±5–±200 |
| RI82-0525 | 1 | 7 | 26 | 2.5 | 23 | 15 | 0.6 | 1K–100G | 12,000 | F G J K | ±5–±200 |
| RI82-0540 | 1.5 | 7 | 41 | 2.5 | 38 | 15 | 0.6 | 1K–100G | 18,000 | F G J K | ±5–±200 |
| RI82-0628 | 1.5 | 8 | 29 | 2.5 | 26 | 15 | 0.6 | 1K–100G | 12,000 | F G J K | ±5–±200 |
| RI82-0726 | 1.5 | 9 | 27 | 2.5 | 22.86 | 18 | 0.6 | 1K–100G | 12,000 | F G J K | ±5–±200 |
| RI82-0825 | 1.5 | 10 | 26 | 2.5 | 22.86 | 18 | 0.6 | 1K–100G | 12,000 | F G J K | ±5–±200 |
| RI82-1020 | 2 | 12 | 21 | 2.5 | 17 | 18 | 0.6 | 1K–100G | 8,000 | F G J K | ±5–±200 |
| RI82-0830 | 2 | 10 | 31 | 2.5 | 27.94 | 18 | 0.6 | 1K–100G | 15,000 | F G J K | ±5–±200 |
| RI82-1025 | 2 | 12 | 26 | 2.5 | 23 | 18 | 0.6 | 1K–100G | 12,000 | F G J K | ±5–±200 |
| RI82-0833 | 2 | 10 | 34 | 2.5 | 30 | 18 | 0.6 | 1K–100G | 15,000 | F G J K | ±5–±200 |
| RI82-0840 | 2 | 10 | 41 | 2.5 | 37 | 18 | 0.6 | 1K–100G | 18,000 | F G J K | ±5–±200 |
| RI82-0550 | 3 | 7 | 51 | 2.5 | 47 | 18 | 0.6 | 1K–100G | 20,000 | F G J K | ±5–±200 |
| RI82-0852 | 3 | 10 | 53 | 2.5 | 49.5 | 18 | 0.6 | 1K–100G | 20,000 | F G J K | ±5–±200 |
| RI82-0930 | 3 | 11 | 31 | 2.5 | 27.94 | 18 | 0.6 | 1K–100G | 15,000 | F G J K | ±5–±200 |
| RI82-1030 | 3 | 12 | 31 | 2.5 | 27.94 | 22 | 0.6 | 1K–100G | 15,000 | F G J K | ±5–±200 |
| RI82-1538 | 5 | 17 | 39 | 2.5 | 35 | 22 | 0.6 | 1K–100G | 18,000 | F G J K | ±5–±200 |
| RI82-1542 | 5 | 17 | 43 | 2.5 | 38 | 22 | 0.6 | 1K–100G | 20,000 | F G J K | ±5–±200 |
| RI82-1050 | 5 | 12 | 51 | 2.5 | 47 | 22 | 0.6 | 1K–100G | 20,000 | F G J K | ±5–±200 |
| RI82-1550 | 8 | 17 | 51 | 2.5 | 47 | 22 | 0.6 | 1K–100G | 20,000 | F G J K | ±5–±200 |
| RI82-2075 | 10 | 22 | 76 | 2.5 | 72 | 22 | 0.6 | 1K–100G | 25,000 | F G J K | ±5–±200 |
| RI82-2090 | 15 | 22 | 92 | 2.5 | 87 | 22 | 0.6 | 1K–100G | 30,000 | F G J K | ±5–±200 |
| RI82-25100 | 20 | 27 | 102 | 2.5 | 97 | 22 | 0.6 | 1K–100G | 30,000 | F G J K | ±5–±200 |
| RI82-30100 | 25 | 32 | 102 | 2.5 | 97 | 22 | 0.6 | 1K–100G | 30,000 | F G J K | ±5–±200 |
| RI82-35120 | 30 | 37 | 122 | 2.5 | 117 | 22 | 0.6 | 1K–100G | 35,000 | F G J K | ±5–±200 |
| RI82-40150 | 50 | 42 | 152 | 2.5 | 147 | 22 | 0.6 | 1K–100G | 40,000 | F G J K | ±5–±200 |
| RI82-60180 | 100 | 62 | 182 | 2.5 | 177 | 22 | 0.6 | 1K–100G | 60,000 | F G J K | ±5–±200 |
Standard part designation example: RI82FA0510T. Tolerance codes F = 1%, G = 2%, J = 5%, K = 10%.
Performance
Test items, requirements and methods from the manufacturer specification.
| Test item | Performance requirement | Test method |
|---|---|---|
| Solderability | Infiltration area ≥ 95% | Solder bath 235 ± 5 °C, 2 s |
| Terminal strength | ΔR ≤ ±(1%R + 0.05Ω) | 10 N, 30 s |
| Damp heat, steady state | ΔR ≤ ±(5%R + 0.1Ω) | 40 ± 2 °C, 93 ± 3%RH, 1000 h |
| Vibration | ΔR ≤ ±(1%R + 0.05Ω) | 10–500 Hz, 0.75 mm or 98 m/s², 6 h |
| Resistance to soldering heat | ΔR ≤ ±(1%R + 0.05Ω) | 260 ± 5 °C, 10 ± 1 s |
| Fast temperature change | ΔR ≤ ±(1%R + 0.05Ω) | −55 °C 30 min / 125 °C 30 min, 5 cycles |
| Endurance at 70 °C | ΔR ≤ ±(5%R + 0.1Ω) | 70 ± 2 °C, rated power, 1000 h |
| Short time overload | ΔR ≤ ±(1%R + 0.05Ω) | 1.5 VR, 5 s |
Full data sheet reproduced from the manufacturer specification. XYT Electronics supplies these series as an independent distributor; all trademarks are used for identification only.
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