PR SERIES
Cost effective high-voltage surge resistors to 200 joules
Available on RCD’s exclusive SWIFTTM program
Molded surface mount version available (PRM series)
OPTIONS
Opt. ER: Group A Screening per MIL-R-39008 RCR
Opt. F: Flameproof coating
Opt. B: Increased power (see Specications table)
Opt. X: Non-inductive (see Performance Char. table)
Custom marking, cut & form, burn-in, etc.
SURGE RESISTORS, 1/8W to 15W, 2KV to 25KV
Excellent Low Cost Replacement for Composition Resistors
Series PR pulse resistors withstand higher energy pulses than conven-
tional lm & wirewound types, without the performance disadvantages
of carbon comp resistors. The heavy duty construction features a high
thermal conductivity core and coating, enabling improved stability and
environmental performance. Series PR satisy a wide variety of pulse
applications including lightning, snubber, in-rush current, capacitor
charge, etc. RoHS (Sn) or Mil-spec (Sn-Pb) termination nish available.
SPECIFICATIONS Inch [mm]
→ D ←
← L →
← H →d
↓
↑
RCD
Type
Wattage Rating Max.
Continuous
Voltage1,5,8
Max.
Peak Pulse
Voltage2,5,8
Resistance
Range5L (Body Length) D6 (Body Dia.) d±.004 [.1] H4 (min)
Standard Option B
PR1/8 1/8W 1/2W 150V 2KV 0.1W-2K .145±.025 [3.69±.64] .062±.015 [1.6±.38] .018 [.46] 1.0 [25.4]
PR1/4 1/4W 1W 250V 3.5KV 0.1W-10K .240±.032 [6.1±.8] .085±.025 [2.16±.64] .022 [.56] 1.0 [25.4]
PR1/2 1/2W 2W 350V 5KV 0.1W-24K .375±.040 [9.2±1] .156±.025 [3.96±.64] .028 [.7] 1.25 [32]
PR1 1W 4W 500V 10KV 0.1W-100K .600±.040 [15.2±1] .225±.032 [5.72±.8] .031 [.8]31.25 [32]
PR2 2W 5W 750V 15KV 0.1W-200K .875±.062 [22.2±1.6] .312±.040 [7.92±1] .039 [1]31.375 [35]7
PR5 5W 10W 800V 18KV 0.1W-220K 1.05±.062 [26.7± 1.6] .350±.040 [8.89±1] .039 [1] 1.375 [35]
PR10 10W 15W 1000V 25KV 0.1W-510K 1.72±.062[43.7±1.6] .350±.040 [8.89±1] .039 [1] 1.375 [35]
RESISTORSCAPACITORSCOILSDELAY LINES
RCD PR2
10K 5%
1 Max voltage = √(PxR), not to exceed value listed. 2 Pulse voltage & energy capability is dependent on res.value, waveform, repetition rate, & environmental conditions (refer to R-42 for derating factors). 3 .040” (1mm) lead
dia. is available on PR1 (specify PR1-18), .032” [.8mm] lead dia. is available on PR2 (specify PR2-20) 4Lead length is for bulk packaging, taped parts may be shorter (consult taping dimensions). 5 Expanded range avail.
6Allow .024” [.6mm] additonal for Opt. X or values <1W 7 Specify Opt. 56 for 1.5” [38.1] min. lead length, Opt. 70 for 2” [50.8] lead length 8Multiply by 0.7 on Opt.X parts.
RoHS
Term.”W”
is Pb-free
and RoHS
compliant;
“Q” is Sn-Pb
FA029K Sale of this product is in accordance with GF-061. Specications subject to change without notice.
PERFORMANCE CHARACTERISTICS, Typ. APPLICATION NOTE
* specify Opt.75 for induc levels 50% that of Opt.X, or Opt.76 for 33% that of Opt.X
Derating, Wattage & Voltage PR1/8-PR2: 1.25%/°C >70°C,
PR5-PR10 & Opt. B: 0.8%/°C >25°C
Max.Induc*: Opt. X≤50W0.2uH PR1/8X-PR1/2X,0.3uH PR1X-PR2X,
0.7uH PR5X-PR10X
Max.Induc*: Opt. X>50W0.37uH PR1/8X-PR1/2X, 0.6uH PR1X-
PR2X, 1.4uH PR5X-PR10X
Short-time Overload ±0.5%
Temperature Cycling ±0.5%
TCR (20 & 50ppm avail.) ±100ppm/°C(<0.2W=200ppm)
Moisture Resistance ±1%
Shock and Vibration ±0.2%
Effect of Soldering ±0.2%
Voltage Coefcient ±0.005%/V
Load Life ±0.5% Std, ±1% Opt.B
Operating Temp Range -55 to +150°C, +275°C avail.
Dielectric Strength (1KV avail.) 500V (PR1/8 & PR1/4 =300V)
RCD Components Inc, 520 E.Industrial Park Dr, Manchester, NH, USA 03109 rcdcomponents.com Tel: 603-669-0054 Fax: 603-669-5455 Email:sales@rcdcomponents.com
73
Use chart above to select model to meet desired surge level. Pulse not to exceed
peak V & j ratings (derate 30% for Opt.X), and average power during repetitive
pulses nte rated W. A safety factor of 30% typ. is recommended for infrequent
pulses, 50% typ. for repetitive pulses (refer to Note R42 for derating factors at-
tributable to pulse width, rep. rate, temp., altitude, humidity). Verify by evaluating
under worst-case conditions. Depending on specics, PR series can often satisfy
the surge requirements of UL-217, -268, -294, -497, -508, -913, -943, -991, -1459,
-1971, ANSI/IEEE C62.41, CCITT (Rec. K17), Bellcore TR-NWT-001089 & TR-
TSY-000057, CSA C22.2-225, IEC 664, IEC 801.5, IEEE587, Can.Doc. CS-03,
FCC Part 68., etc. Consult factory for assistance.
P/N DESIGNATION: PR1/2 - 102 - K T W
Options: X, S, F, ER, B (leave blank if std)
Resis. Code 1% tol: 3 signif. gures & multiplier,
e.g. R100=0.1W, 1R00=1W, 10R0=10W, 1000=100W, 1001=1K.
2%-10%: 2 signif.g. & multiplier (R10=0.1W, 1R0=1W, 100=10W, 102=1K)
Termination: W= RoHS (std), Q= Tin/Lead (leave blank if either is acceptable)
Optional TC: 20 =20ppm, 50= 50ppm (leave blank if standard)
Packaging: B = bulk, T = Tape & Reel
Tolerance: J=5% (standard), F=1%, G=2%, K=10%
RCD Type
SURGE CAPABILITY
Energy Rating, Joules (j)
0.1 0.25 0.5 .75 1 2.5 5 7.5 10 25 50 75 100 250 500 750 1K 2.5K 5K 7.5K 10K 25K 50K 75K 100K
Resistance Value (ohms)
1000
100
10
1 PR1
PR2
PR5
PR10
PR1/8
PR1/4
PR1/2
