SMH Series
Snap Mount
Large
Capacitance
High CV
High Ripple
RoHS
Compliant
85C
Maximum
Temperature
The SMH series capacitors are the standard 85C, large capacitance, snap-in capacitors from
United Chemi-Con. The load life for the SMH series is 2,000 hours at 85C with the rated ripple
current applied. The very high CV values and ripple current capabilities make these capacitors ideal
for use in power supply filter circuits. The SMH capacitors are available in 2 or 4-pin snap-in styles
and 4 or 5-pin straight terminals. The SMH series is RoHS compliant offering Pb-free construction.
The standard SMH series capacitors are not solvent proof. Refer to guidelines and precautions on the
website for usage and installation conditions recommended for United Chemi-Con products.
Summary of Specifications
PC board 2 or 4-pin snap-in; optional 4 or 5-pin straight terminals.
Capacitance range: 56 to 270,000F.
Voltage range: 6.3 to 450VDC.
Category temperature range: 40Cto85C for 6.3 to 100V; 25Cto85C for
160 to 450V.
Leakage current: 0.02CV(A) or 3mA, whichever is smaller, after 5 minutes at20C.
Standard capacitance tolerance: 20%
Nominal case size (DL): 2220mm to 4080mm.
Rated lifetime: 2,000 hours at85C with the rated ripple current applied.
18 United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com
SMH
SNAP MOUNT 85CSMH
SNAP MOUNT 85C
SMH Series
SMH Specifications - Snap Mount
Item Characteristics
Category Temperature Range 40 to85C for 6.3 to 100VDC; 25 to85C for 160 to 450VDC
Rated Voltage Range 6.3 to 450VDC
Capacitance Range 56 to 270,000F
Capacitance Tolerance 20% (M) at 20C, 120Hz
Leakage Current I 0.02CV (A) or 3mA, whichever is smaller, after 5 minutes at 20C.
Where I = Max. leakage current (A), C = Nominal capacitance (F) and V= Rated voltage (V)
Dissipation Factor (Tan )At 20C, 120Hz
Rated Voltage (V) 6.3 10 16 25 35 50 63-100 160-250 315-450
0.10
Tan (DF) Max. 0.60 0.50 0.40 0.30 0.25 0.20 0.15 * * 0.15
*0.15 maximum for 35mm and 40mm diameter.
For rated voltages 63V, values are not valid for case sizes >35mm in diameter or >50mm in length.
Low Temperature At 120Hz, impedance (Z) ratio between the 25C or 40C value and 20C value shall not
Characteristics exceed the values given below.
Rated Voltage (V) 6.3-16 25 35 50, 63 80,100 160-400 450
Z( 25C) /Z( 20C) 4 3 3 2 2 4 8
Z( 40C) /Z( 20C) 15 10 8 6 5
Rated Ripple Current Multipliers Ambient Temperature (C)
45C 60C 70C 85C
1.73 1.50 1.32 1.00
Frequency (Hz)
DC Rated Voltage 50Hz 120Hz 300Hz 1kHz 10kHz 100kHz
6.3-50V 0.95 1.00 1.03 1.05 1.08 1.08
63-100V 0.92 1.00 1.07 1.13 1.19 1.20
160-250V 0.81 1.00 1.17 1.32 1.45 1.50
315-450V 0.77 1.00 1.16 1.30 1.41 1.43
Endurance The following specifications shall be satisfied when the capacitors are restored to20C after
(Load Life) subjecting them to DC voltage for 2,000 hours at 85C with the rated ripple current applied.
The sum of the DC voltage and peak AC voltage must not exceed the full rated voltage of
the capacitors.
Capacitance change: 20% of initial measured value
Tan (DF) : 200% of initial specified value
Leakage current : initial specified value
Shelf Life The following specifications shall be satisfied when the capacitors are restored to20C after
exposing them for 1,000 hours at 85C without voltage applied. The rated voltage shall be
applied to the capacitors for a minimum of 30 minutes, at least 24 hours and not more than
48 hours before the measurements.
Capacitance change: 20% of initial measured value
Tan (DF) : 150% of initial specified value
Leakage current : initial specified value
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com 19