# MPH Hermetic Resistor Networks

## Features
· Lead (Pb)-free options available
· Hermetically sealed construction
· Exceptional stability: 500 ppm at +70°C (10,000 hours)
· Nickel barrier terminations
· For Military/Aerospace applications

## Electrical Specifications
· Resistance Range: 100 Ω to 100 kΩ
· TCR (Tracking): ±2 ppm/°C (-55°C to +125°C)
· TCR (Absolute): ±25 ppm/°C (-55°C to +125°C)
· Ratio Tolerance: ±0.1% to ±0.05%
· Absolute Tolerance: ±1.0% to ±0.1%
· Power Rating (Resistor): 1000 mW per element @ +70°C
· Power Rating (Package): 250 mW @ +70°C
· Stability (ΔR Absolute): 0.10% (2000 hours at +70°C)
· Stability (ΔR Ratio): 0.03% (2000 hours at +70°C)
· Working Voltage: 50 V

## Environmental Specifications
· Operating Temperature: -55°C to +125°C
· Storage Temperature: -55°C to +125°C
· Shelf Life (Absolute): <100 ppm (1 year at +25°C)
· Shelf Life (Ratio): <20 ppm (1 year at +25°C)

## Mechanical Specifications
· Resistive Element: Passivated nichrome
· Substrate Material: Alumina
· Body: Ceramic
· Terminals: Gold over nickel
· Marking: Resistance to solvents per MIL-PRF-83401

## Dimensions
· A: 0.155 inches (3.937 mm)
· B: 0.080 inches (2.032 mm)
· C: 0.225 inches (5.715 mm)
· D: 0.025 inches typical (0.635 mm)
· E: 0.040 inches (1.016 mm)
· F: 0.070 inches (1.778 mm)
· G: 0.050 inches (1.27 mm)

## Part Numbering
· New Format: MPHK1003BUF
· Historical Format: MPHR1001B (still accepted)

## Compliance
· RoHS compliant options available
· Lead (Pb)-free option: 96.5% Sn, 3.0% Ag, 0.5% Cu