RCD Components PR2-510-JBW

View All Accessories by RCD Components

Part Number:
PR2-510-JBW
Manufacturer:
RCD Components
Category:
Accessories
RoHs:
RoHS Compliant
Datasheet:
PR2-510-JBW_Datesheet
Description:
RES 51 OHM 5% 2W AXIAL
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Specifications

Type

Paramete

Type

Paramete

Temperature Coefficient

±100ppm/°C

Tolerance

±5%

Failure Rate

Power (Watts)

Size / Dimension

0.312" Dia x 0.874" L (7.92mm x 22.20mm)

Number of Terminations

Operating Temperature

-55°C ~ 150°C

Package / Case

Axial

Resistance

51 Ohms

Supplier Device Package

Axial

Composition

Wirewound

Features

High Voltage, Pulse Withstanding

Height - Seated (Max)

Overview

PR2-510-JBW

High-Energy Surge/Pulse Withstanding Resistor – Complete Datasheet Summary

1. Product Identity

Manufacturer: RCD Components Inc.
Series: PR (Surge-Resistant Wirewound / Film Hybrid)
Full Part Number: PR2-510-JBWPR2 = 2 W base rating, 15 kV pulse capability510 = 51 Ω (E-24 value)J = ±5 % toleranceB = “Option B” enhanced-power variant (5 W continuous)W = Pb-free, RoHS-compliant termination

2. Electrical Characteristics (@ 25 °C unless noted)

TableCopy

Parameter	Value	Conditions / Notes
Resistance	51 Ω	–
Tolerance	±5 %	(Option F = ±1 % available)
Continuous Power	5 W	With Option B (2 W without)
Max. continuous voltage	750 V	√(P·R) = 509 V, derated to 750 V max
Peak pulse voltage	15 kV	1.2/50 µs, once per minute
Energy rating (single pulse)	≈ 200 J	Depends on ohmic value & waveform
Temp. coefficient	±100 ppm/°C std	±20 ppm/°C or ±50 ppm/°C optional
Voltage coefficient	±0.005 %/V	Negligible shift up to rated V
Insulation withstand	500 VDC	(1 kV optional)

3. Performance & Reliability

Pulse capability: > 1000 × 1.2/50 µs, 30 % derate recommended for repetitive surges
Short-time overload: ΔR ≤ ±0.5 %, 2 × rated power, 5 s
Load life: ΔR ≤ ±0.5 %, 1000 h @ rated power, 70 °C
Thermal derating: 0.8 %/°C above 25 °C (Option B)
Operating temp.: –55 °C to +150 °C (275 °C on request)
Moisture resistance: ΔR ≤ ±1 %, MIL-STD-202 method 106
Shock / vibration: ΔR ≤ ±0.2 %, 100 g, 6 ms
Flame: Standard coating flame-proof; Option F adds extra fire-retardant layer

4. Mechanical Data

TableCopy

Dimension	mm	inch
Body length L	22.2 ± 1.6	0.875 ± 0.062
Body diameter D	7.92 ± 1.0	0.312 ± 0.040
Lead diameter d	1.0	0.039
Min. lead length H	35	1.375
Lead style	Axial, tinned copper	Solderability per J-STD-002 Marking: “PR2 51R J” + date-code; optional custom marking

5. Material & Compliance

Resistive element: Ceramic core with special pulse-proof film / wire-wound hybrid
Coating: High-thermal-conductivity epoxy, green (Option F: flame-proof)
Termination: Matte tin over nickel, Pb-free, RoHS 10/10, REACH SVHC-free
MSL: 1 (unlimited floor life)

6. Packaging & Ordering

Bulk (standard): 500 pcs/bag, bag weight ≈ 0.9 kg
Tape & reel (add “T” suffix): Ammo pack or 330 mm reel, 1 k pcs/reel
Part Number Builder:PR2 – 510 – J – (Options) – (Pack)Example: PR2-510-J-B-W-T → 51 Ω, 5 %, 5 W, Pb-free, tape & reel

7. Qualifications & Standards

Environmental: MIL-PRF-39008 (Group A available with Option ER)
Surge standards supported: UL-1449, IEC-664, IEEE C62.41, FCC Part 68, Bellcore TR-NWT-001089, etc.
AEC-Q200 passive stress test capable (contact factory for automotive PPAP)

8. Typical Applications

Lightning & surge protection (AC power, telecom)
Snubber / RC clamp networks in SMPS, inverters
Capacitor pre-charge / dump resistors
Medical defibrillator pulse handling
EV charging pile in-rush limiters
High-voltage divider front ends

9. Absolute Maximum Ratings (stress)

Peak current: 550 A, 10 µs (51 Ω)
Energy density: ≤ 1 J/Ω (single pulse)
Storage temp.: –65 °C to +200 °C
Altitude: 70 kft (derate 30 % above 30 kft)

10. Cautions & Installation

Maintain 5 mm creepage on PCB for rated 15 kV pulse
Use adequate copper area (≥ 300 mm²) for 5 W continuous operation
Avoid mechanical stress > 5 N on leads after soldering
Clean flux residues with alcohol only; ultrasonic cleaning not recommended

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