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MALREKB00JS233PG0K Equivalent & Substitute Parts
Part Overview
The MALREKB00JS233PG0K is a 33 µF, 450 V aluminum electrolytic capacitor in radial, can package manufactured by Vishay Beyschlag/Draloric/BC Components from the EKB series. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a temperature range of -25°C to 105°C with a rated lifetime of 2000 hours at 105°C, suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 33 µF |
| Tolerance | ±20% |
| Voltage Rating | 450 V |
| ESR @ 120 Hz | 8.04 Ohm |
| Lifetime @ 105°C | 2000 Hrs |
| Operating Temperature Range | -25°C ~ 105°C |
| Lead Spacing | 0.295" (7.50 mm) |
| Case Diameter | 0.630" (16.00 mm) |
| Height (Seated Max) | 1.319" (34.60 mm) |
| Mounting Type | Through Hole |
| Package Type | Radial, Can |
| RoHS Status | ROHS3 Compliant |
| Polarization | Polar |
Substitute Part Grouping Explanation
Substitution of the MALREKB00JS233PG0K is determined by strict adherence to the following electrical and mechanical parameters:
Critical Parameters (Must Match):
- Capacitance: 33 µF
- Tolerance: ±20%
- Voltage Rating: 450 V or higher
- Polarization: Polar
- Lead Spacing: 0.295" (7.50 mm)
- Case Diameter: 0.630" (16.00 mm)
- Height (Seated Max): 1.319" (34.60 mm) or compatible
- Mounting Type: Through Hole
- Package Type: Radial, Can
Allowable Variations:
- Operating Temperature Range: May extend beyond -25°C ~ 105°C
- Lifetime @ Temperature: May exceed 2000 Hrs @ 105°C
- ESR: May be lower than 8.04 Ohm @ 120 Hz
- Ripple Current: May exceed specified values
- Voltage Rating: May exceed 450 V (upgrade acceptable)
Substitute parts are grouped into two categories: direct equivalents (matching 450 V rating) and upgrades (500 V rating with enhanced performance characteristics).
Parameter Comparison
| Part Number | Manufacturer | Capacitance | Voltage | Tolerance | Lifetime @ 105°C | Operating Temp Range | Lead Spacing | Case Dia | Height | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| MALREKB00JS233PG0K | Vishay Beyschlag | 33 µF | 450 V | ±20% | 2000 Hrs | -25°C ~ 105°C | 0.295" | 0.630" | 1.319" | Obsolete |
| B43851A5336M000 | EPCOS - TDK | 33 µF | 450 V | ±20% | 3000 Hrs | -40°C ~ 105°C | 0.295" | 0.630" | 1.319" | Active |
| B43858C5336M000 | EPCOS - TDK | 33 µF | 450 V | ±20% | 5000 Hrs | -25°C ~ 105°C | 0.295" | 0.630" | 1.319" | Active |
| B43866C5336M | EPCOS - TDK | 33 µF | 450 V | ±20% | 5000 Hrs @ 125°C | -25°C ~ 125°C | 0.295" | 0.630" | 1.319" | Active |
| B43890A5336M | EPCOS - TDK | 33 µF | 450 V | ±20% | 15000 Hrs | -25°C ~ 105°C | 0.295" | 0.630" | 1.319" | Active |
| ESG336M450AM2AA | KEMET | 33 µF | 450 V | ±20% | 5000 Hrs | -25°C ~ 105°C | 0.295" | 0.630" | 1.339" | Active |
| EGXE451ELL330MLN3S | Chemi-Con | 33 µF | 450 V | ±20% | 2000 Hrs @ 125°C | -25°C ~ 125°C | 0.295" | 0.630" | 1.319" | Active |
| UBT2W330MHD8 | Nichicon | 33 µF | 450 V | ±20% | 2000 Hrs @ 125°C | -25°C ~ 125°C | 0.295" | 0.630" | 1.319" | Active |
| UCA2W330MHD | Nichicon | 33 µF | 450 V | ±20% | 12000 Hrs | -25°C ~ 105°C | 0.295" | 0.630" | 1.299" | Obsolete |
| 500BXC33MEFC16X31.5 | Rubycon | 33 µF | 500 V | ±20% | 12000 Hrs | -25°C ~ 105°C | 0.295" | 0.630" | 1.319" | Active |
| 500BXC33MEFCRX16X31.5 | Rubycon | 33 µF | 500 V | ±20% | 10000 Hrs | -25°C ~ 105°C | 0.295" | 0.630" | 1.319" | Active |
Engineering Selection Recommendations
Direct Equivalents (450 V Rating):
For applications requiring direct replacement with active product status and enhanced reliability, B43851A5336M000 (EPCOS - TDK) provides improved performance with 3000-hour lifetime at 105°C and extended operating temperature range to -40°C. B43858C5336M000 and B43890A5336M offer significantly extended lifetimes (5000 and 15000 hours respectively) while maintaining identical mechanical and electrical compatibility.
ESG336M450AM2AA (KEMET) is suitable for general-purpose applications with active status and 5000-hour lifetime. EGXE451ELL330MLN3S (Chemi-Con) and UBT2W330MHD8 (Nichicon) are rated for automotive applications with AEC-Q200 certification and extended temperature operation to 125°C, appropriate for automotive or high-temperature environments.
Upgrade Options (500 V Rating):
500BXC33MEFC16X31.5 and 500BXC33MEFCRX16X31.5 (Rubycon) provide voltage upgrade to 500 V with extended lifetimes (12000 and 10000 hours respectively). These upgrades are mechanically compatible and suitable for applications requiring higher voltage margin or improved reliability.
Compliance Considerations:
All substitute parts maintain ROHS3 compliance and are suitable for applications requiring environmental compliance. Parts with REACH Affected status (UBT2W330MHD8) require verification against specific REACH substance restrictions in target applications.
Frequently Asked Questions (FAQ)
Q: Can I use a 500 V rated capacitor in place of the 450 V MALREKB00JS233PG0K?
A: Yes. The 500BXC33MEFC16X31.5 and 500BXC33MEFCRX16X31.5 (Rubycon) are mechanically and electrically compatible upgrades. Higher voltage rating provides additional safety margin and does not degrade circuit performance in 450 V applications.
Q: What is the difference between direct equivalents and upgrade options?
A: Direct equivalents maintain the 450 V voltage rating of the original part. Upgrade options increase the voltage rating to 500 V, offering enhanced reliability and extended operational lifetime. Both categories maintain identical mechanical dimensions and lead spacing.
Q: Are there differences in height between substitute parts?
A: Most substitute parts maintain the 1.319" (34.60 mm) seated height. ESG336M450AM2AA has a maximum seated height of 1.339" (34.00 mm), and UCA2W330MHD has 1.299" (33.00 mm). Verify PCB clearance for applications with tight vertical constraints.
Q: Which substitute part offers the longest operational lifetime?
A: B43890A5336M (EPCOS - TDK) provides 15000 hours at 105°C, the highest lifetime rating among all substitutes. For applications requiring extended service life, this part is the optimal selection.
Q: Can I use parts rated for automotive applications in non-automotive circuits?
A: Yes. EGXE451ELL330MLN3S (Chemi-Con) and UBT2W330MHD8 (Nichicon) are automotive-qualified parts with AEC-Q200 certification. These parts exceed general-purpose requirements and are suitable for any application within their electrical and thermal specifications.
Q: What is the significance of extended temperature range (-40°C to 105°C)?
A: B43851A5336M000 extends the lower operating limit to -40°C, suitable for applications exposed to cold environments or requiring broader temperature operation. The original MALREKB00JS233PG0K operates from -25°C minimum.
Q: Are there any REACH compliance concerns with substitute parts?
A: UBT2W330MHD8 (Nichicon) has REACH Affected status, requiring verification against current REACH substance restrictions. All other substitutes have REACH Unaffected status. Confirm compliance requirements for your specific application and target markets.
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