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Specifications
Lifetime:
2000hrs@105℃
Operating Temperature:
-25℃~+105℃
Capacitance:
68uF
Height - Seated (Max):
21mm
Pin Spacing:
7.5mm
Voltage Rating:
400V
Diameter:
16mm
Tolerance:
±20%
Ripple Current:
400mA@120Hz
Mfr. Part #:
68uF400V16x21KM
Package:
Through Hole,D16xL21mm
Key Attributes
Model Number:
68uF400V16x21KM
Product Description
Product Overview
This document specifies the KM series of aluminum electrolytic capacitors manufactured by Hubei Milang Xingchuang Electronics Co., Ltd. These capacitors are designed for various electronic applications and are available in a 68uF 400V rating with a 16x21mm size. The product comes with detailed technical specifications, dimensions, marking information, test procedures, and packaging details.
Product Attributes
- Brand: MILANG
- Origin: Hubei, China
- Material: Aluminum Electrolytic Capacitor
- Color: Black with white PET sleeve (for marking)
- Certifications: RoHS
- Supplier Part Number: KM 68UF400V 16X21
- Date: 2025/7/7
Technical Specifications
| Part Number | Series | CAP.(uF) | WV(V) | SIZE (D x L) | Tolerance | D.F/120HZ | LC(uA)60s | 100KHz() | life(Hrs) | R.C.mA120Hz 105 | surge voltage | Sleeve | Working temperature () |
| KM | KM | 68.0 | 400 | 16.0 X 21.0 | -20 % 20 % | 15 | 816.0 | / | 2000 | 400 | 450 | Black PET with white letters, long leads | -25+105 |
Dimensions (Unit: mm)
| D | L | F | d |
| 16.0 0.5 | 21.0 1.5 | 7.5 0.5 | 0.8 0.05 |
Marking Information
| Item | Description |
| 1. | Company Logo |
| 2. | Capacitance and Rated Voltage |
| 3. | Polarity bar |
| 4. | Series |
| 5. | Operating Temperature Range and Capacitance Tolerance |
| 6. | RoHS |
| 7. | Production Date (e.g., 2502 for Feb 2025) |
| 8. | Sleeve Material |
Ripple Current Coefficient (Multiplier for ripple current)
| Freq | CAP10 | 10CAP100 | 100CAP1000 | CAP1000 |
| 50Hz/60Hz | 0.65 | 0.75 | 0.80 | 0.85 |
| 120Hz | 1.00 | 1.00 | 1.00 | 1.00 |
| 1KHz | 1.75 | 1.5 | 1.3 | 1.05 |
| 10KHz | 2.3 | 1.75 | 1.4 | 1.08 |
| 50100KHz | 2.50 | 1.80 | 1.40 | 1.08 |
Ripple Current Multiplier vs Temperature
| Temperature() | 45 | 60 | 70 | 85 | 95 | 105 |
| Multiplier | 2.30 | 2.10 | 2.00 | 1.7 | 1.40 | 1.00 |
Test Items
| NO. | Test Item | Conditions | Specifications |
| 1. | Maximum permissible ripple current | Temperature:1052, Voltage:DC.Voltage+peak ripple voltageRated voltage, Ripple frequency: 120Hz | Refer to table |
| 2. | Surge | Temperature:1052, "ON" position: 30 seconds, "OFF" position: 5 minutes 30 seconds, Duration:1000 cycles | 1.No electrical or mechanical damage. 2.Capacitance change within 15%. 3.D.F.smaller than specification volue. 4.Leakage current smaller than specification volue. |
| 3. | Temperature Cycle | One Cycle: Rated low category temperature3 (303 min) to 25 (3 MAX min), Total number of cycles: 5 | 1.No appearance defect. 2.Capacitance change within 5%. 3.D.F.smaller than specification value. 4.Leakage current smaller than specification value. |
| 4. | Resistance to Soldering Heat | Warm up time:1202 seconds to reach 1202, Solder bath temperature: 2605, Immersion depth: 1.5 to 2.0mm, Immersion duration: 101 seconds | 1.No appearance defect. 2.Capacitance change within 5%. 3.D.F.smaller than specification value. 4.Leakage current smaller than specification value. |
| 5. | Solder Ability | Solder bath temperature: 2355, Immersion depth: 1.5 to 2.0mm, Immersion duration: 101 seconds | A minimum of 95% the immersed surface is to be coated with the new solder |
| 6. | Low Temperature Characteristics (Max. Impedance Ratio) | Working Voltage (V) | Impedance Z(-40)/Z(+20) for 6.3-100V; Z(-25)/Z(+20) for 160-450V |
| 7. | High Humidity Storage | Temperature:402, Relative humidity:90 to 95%, Duration:2408 hours | 1.No electrical or mechanical damage. 2.Capacitance change within 15%. 3.D.F.smaller than specification volue. 4.Leakage current smaller than specification volue. |
| 8. | Vent | Capacitor diameter < 22.4mm: Applied current(A) 1A within 30 min; > 22.5mm: 10A within 9 min | No explosion, flash, flame, spark or fire from the capacitor during or after the test, nor shall there be expulsion of any metal from the casing |
| 9. | Terminal strength: Tensile test/winding intensity | Tensile test: Diameter of terminal (mm) 0.5d0.8 (10N, 101sec); 0.8d1.25 (20N, 101sec). Winding test: Diameter of terminal (mm) 0.5d0.8 (5N, 0.51kg); 0.8d1.25 (10N, 1.02kg) | 1.No electrical or mechanical damage. 2.No appearance damage. |
| 10. | Vibration | Frequency range: 10 Hz to 55 Hz, Amplitude: 1.5 mm, Cycle duration: 1 minute, Duration: 2 hours per direction (3 directions) | 1.No electrical or mechanical damage. 2.No appearance damage. |
| 11. | Endurance | Capacitors are placed in an oven and applied voltage for 2000 hours at 105. After being restored to 25, capacitors shall meet the specifications | 1.Capacitance change within 20% of the initial value. 2.D.F.change within 200% of the specified value. 3.Leakage current smaller than specification value. |
| 12. | Shelf Life | Capacitors are placed in an oven for 1000 hours at 105 without applying rated working voltage. After being restored to 25, capacitors shall meet the specifications | 1.Capacitance change within 20% of the initial value. 2.D.F.change within 200% of the specified value. 3.Leakage current within 200% of the specification value. |
Packaging
| Type | Description | Dimensions (L x W x H) |
| Bulk Packaging | For long and short leads | Outer Box: 420X327X270mm |
| Taped Packaging | 10 inner boxes per outer box | Inner Box: 345X235X55mm, Outer Box: 490X355X295mm |
| Reel Packaging | (Details not specified in text) | (Dimensions not specified in text) |
Storage Conditions
- Storage Temperature: 35
- Storage Humidity: 75% RH
- Shelf Life: One year (re-charging required after one year)
2507111630_Econd-68uF400V16x21KM_C49332880.pdf
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