944U101K801AAM Cornell Dubilier Electronics (CDE), 944U101K801AAM Datasheet - Page 3

• Manufacturer Part Number: 944U101K801AAM
• Description: CAP 100UF 800V FILM POWER
• Manufacturer: Cornell Dubilier Electronics (CDE)
• Series: 944Ur

Specifications of 944U101K801AAM

• Capacitance: 100µF
• Tolerance: ±10%
• Lead Spacing: 1.772" (45.00mm)
• Voltage - Dc: 800V
• Dielectric Material: Polypropylene, Metallized
• Esr (equivalent Series Resistance): 0.5 mOhm
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Chassis Mount
• Package / Case: Radial, Can - Screw Terminals
• Size / Dimension: 3.327" Dia (84.50mm)
• Height: 1.575" (40.00mm)
• Termination: Screw Terminals
• Features: EMI Suppression
• Voltage Rating: 800 Volts
• Esr: 0.5 mOhms
• Termination Style: Screw
• Dimensions: 84.5 mm Dia. x 40 mm L
• Operating Temperature Range: - 40 C to + 85 C
• Load Life: 10000 Hrs
• Product: DC Link Film Capacitors
• Capacitor Application: DC Link
• Capacitor Dielectric Type: Polypropylene
• Capacitance Tolerance: ± 10%
• Capacitor Case Style: Can
• Capacitor Mounting: Panel
• Rohs Compliant: Yes
• Capacitor Terminals: Screw
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Ac: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 338-1918

Type 944U Polypropylene Film Capacitor for DC Filtering
Metallized Polypropylene Dielectric
Expected Lifetime Predictions
To use the Expected Lifetime curves calculate Va ⁄Vr and core
temperature T. Start by estimating:
Units:
NOTE: The temperature rise in the 944U is I²(ESR) times the
thermal resistance θ. The ESR is mainly the metal resistance;
the metal resistance is the 10 kHz ESR. For operation below 10kHz
add the dielectric resistance. It is the dielectric dissipation factor—
no more than 0.0002—times the capacitive reactance, i.e., 0.0002
⁄(2πfC).
That’s equal to 31.83 ⁄(fC).
CDE Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: [phone] • Fax: [phone]
A=m²
C=μF
ESR=mΩ
f=kHz
I=A
Applied dc voltage Va
Ripple Current I
Ripple Frequency f
Ambient Temperature Ta
Airflow speed v
1.7
1.6
1.5
1.4
1.3
1.2
1.1
0.9
0.8
As an illustration at 50 °C the expected lifetime is 100,000 h with the 24-hour Va ∕ Vr.
Expected lifetime can be calculated for varying exposure to overvoltage transients.
Expected Lifetime vs Core Temperature and Applied DC Voltage
1
The expected lifetime predictions assume no exposure to overvoltage transients.
100
Va &Vr=Vdc
T, Ta & Tc=°C
v=m/s
θ, θca & θcc =°C/W
For applications with more severe 24-hour profiles, contact us.
COPY & PASTE A CDE PART NUMBER TO CHECK STOCK ONLINE:
1000
Va / Vr
Expected Lifetime (h)
1.67
1.50
1.30
1.10
1.00
1. Start with the 10 kHz ESR from the Ratings table. If frequency is less
than 10 kHz, add 31.83 ⁄(fC).
2. Compute total thermal resistance θ as the sum of core-to-case
thermal resistance θcc and case-to-ambient thermal resistance
θca. Both are in the Ratings table but θca is for still air and θcc
is for 10 kHz or less. For frequency > 10 kHz multiply θcc by
[1+(f –10)/100], e.g., for 75 kHz multiply θcc by 1.65. For moving
air use the capacitor surface area A and airflow speed v to calculate
θca = 1 ⁄[A(5+17.5(v+0.1)
3. Compute Va ⁄Vr and the core temperature T.
T = Ta + I²(ESR)θ
4. Look up estimated lifetime from the Expected Lifetime curves.
5. If you want a longer expected lifetime, choose a capacitor with
higher voltage rating or consider using multiple capacitors in parallel to
share the ripple current.
10000
85ºC
70ºC
50ºC
60ºC
Duration
100 ms
11.9 h
9.6 h
2.5 h
5 m
100000
0.66
)].
1000000
GO