157KBM035M Equivalent & Substitute Parts Reference

Part Overview

The 157KBM035M is a 150 µF, 35 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the KBM series. This radial, through-hole component is designed for general-purpose applications requiring stable capacitance and extended operational life. The part is currently Active in product status with 807 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life, experiences supply constraints, or when design flexibility permits equivalent alternatives. The 157KBM035M has one qualified substitute: the Rubycon 35YXH150MEFC8X11.5, which maintains electrical equivalence across critical parameters while differing in physical dimensions and product lifecycle status.

Substiute Parts

157KBM035M

Cornell Dubilier / Illinois CapacitorIn Stock: 848157KBM035M Datasheet

Current PartRFQ

35YXH150MEFC8X11.5

RubyconIn Stock: 257935YXH150MEFC8X11.5 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 157KBM035M is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Capacitance: 150 µF (exact match required)
• Voltage Rating: 35 V (minimum, equal or higher acceptable)
• Tolerance: ±20% (matching tolerance band)
• ESR: 130 mOhm @ 120Hz (equivalent impedance characteristics)
• Lifetime: 7000 Hrs @ 105°C (thermal endurance specification)
• Operating Temperature: -40°C to 105°C (full range compatibility)

Mechanical Compatibility Requirements:

• Mounting Type: Through Hole (PCB assembly method)
• Package Type: Radial, Can (form factor)
• Lead Spacing: 0.138" (3.50mm) (footprint compatibility)
• Case Diameter: 0.315" (8.00mm) (board space constraint)

Compliance Requirements:

• RoHS3 Compliant (environmental regulation)
• ECCN: EAR99 (export classification)

The Rubycon 35YXH150MEFC8X11.5 meets all electrical and mechanical substitution criteria. Physical height differs (0.512" vs. 0.492"), which may require PCB layout verification in space-constrained applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: 157KBM035M (Cornell Dubilier / Illinois Capacitor)

Status: Active product with 807 units in stock. Recommended for new designs and applications where supply continuity is prioritized. Meets all RoHS3 and export compliance requirements (ECCN: EAR99).

Substitute Part: 35YXH150MEFC8X11.5 (Rubycon)

Status: Last Time Buy. This part is suitable for replacement in existing designs or when primary part availability is constrained. Electrical performance is equivalent across all critical parameters. The substitute provides higher ripple current capability (320 mA @ 120 Hz vs. 256 mA), which offers improved thermal margin in high-ripple applications.

Physical Dimension Consideration:

The substitute part is 0.020" (0.50mm) taller than the primary part. PCB layout verification is required in applications with vertical space constraints, such as low-profile enclosures or densely populated boards. Lead spacing and case diameter remain identical, ensuring footprint compatibility.

Compliance Status:

Both parts are ROHS3 compliant and classified as EAR99 for export purposes. The substitute carries REACH Unaffected status, providing additional regulatory clarity for European applications.

Frequently Asked Questions (FAQ)

Q: Can the Rubycon 35YXH150MEFC8X11.5 be used as a direct replacement for the Cornell Dubilier 157KBM035M?

A: Yes, the Rubycon part is electrically and mechanically compatible. Both parts share identical capacitance (150 µF), voltage rating (35 V), tolerance (±20%), ESR (130 mOhm), lifetime (7000 Hrs @ 105°C), operating temperature range (-40°C to 105°C), lead spacing (3.50mm), and case diameter (8.00mm). The substitute is taller by 0.020" (0.50mm), which must be verified against PCB clearance requirements.

Q: What is the difference in ripple current handling between these parts?

A: The Rubycon substitute handles 320 mA ripple current at 120 Hz, compared to 256 mA for the Cornell Dubilier part. This 25% higher ripple current capability in the substitute provides improved thermal performance in applications with significant AC current stress.

Q: Are both parts suitable for the same PCB footprint?

A: Yes, both parts use identical lead spacing (0.138" / 3.50mm) and case diameter (0.315" / 8.00mm), ensuring footprint compatibility. However, the substitute's increased height (0.512" vs. 0.492") requires verification of vertical clearance in the assembly.

Q: What is the product lifecycle status of each part?

A: The Cornell Dubilier 157KBM035M is Active with ongoing production and 807 units in stock. The Rubycon 35YXH150MEFC8X11.5 is designated Last Time Buy, indicating limited future availability. For new designs, the Cornell Dubilier part is preferred; for existing designs requiring replacement, the Rubycon part remains available.

Q: Do both parts meet RoHS and export compliance requirements?

A: Yes, both parts are ROHS3 compliant and classified as EAR99 for export purposes. The Rubycon part additionally carries REACH Unaffected status.

Q: Can the substitute part be used in high-ripple current applications?

A: The Rubycon substitute is better suited for high-ripple applications due to its higher ripple current rating (320 mA @ 120 Hz vs. 256 mA). Both parts maintain equivalent ESR and thermal characteristics, but the substitute's increased ripple current capacity provides additional design margin.