EEU-HD1A331B Equivalent & Substitute Parts

Part Overview

The EEU-HD1A331B is a 330 µF, 10 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the HD series. This radial, through-hole capacitor is rated for 1000 hours at 105°C and is designed for general-purpose applications. The part is currently active and in stock, with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when original inventory becomes unavailable or when application requirements necessitate alternative performance characteristics such as extended lifetime ratings or enhanced ripple current handling.

Substiute Parts

EEU-HD1A331B

Panasonic Electronic ComponentsIn Stock: 2397EEU-HD1A331B Datasheet

Current PartRFQ

UBT1A331MPD8TD

NichiconIn Stock: 1784UBT1A331MPD8TD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EEU-HD1A331B is determined by the following critical parameters:

• Capacitance Value: 330 µF (exact match required)
• Voltage Rating: 10 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Lead Spacing: 0.197" (5.00mm) (exact match required for PCB compatibility)
• Mounting Type: Through Hole (exact match required)
• Package Type: Radial, Can (exact match required)

The substitute part UBT1A331MPD8TD meets all critical electrical and mechanical parameters. While the substitute exhibits enhanced performance characteristics (extended lifetime rating, higher ripple current capacity, and broader operating temperature range), these represent improvements rather than deviations from the core substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

Both the EEU-HD1A331B and UBT1A331MPD8TD are active products with ROHS3 compliance. Selection between these parts should be based on the following factors:

EEU-HD1A331B (Panasonic HD Series): Select this part when the original specification is required and inventory is available. The narrower physical dimensions (6.30mm diameter, 12.70mm height) may be advantageous in space-constrained PCB layouts.

UBT1A331MPD8TD (Nichicon UBT Series): Select this part as a substitute when the EEU-HD1A331B is unavailable. The UBT series offers extended lifetime (5000 hours at 125°C versus 1000 hours at 105°C), higher ripple current capacity at both low and high frequencies, and a broader operating temperature range (-40°C to 125°C). The larger physical dimensions (10.00mm diameter, 14.50mm height) must be verified for PCB layout compatibility. This part is designated for automotive applications.

Both parts share identical electrical specifications (330 µF, 10 V, ±20% tolerance) and identical lead spacing (5.00mm), ensuring functional compatibility in circuits designed for the EEU-HD1A331B.

Frequently Asked Questions (FAQ)

Q: Can the UBT1A331MPD8TD be used as a direct replacement for the EEU-HD1A331B?

A: Yes, the UBT1A331MPD8TD is electrically and mechanically compatible. Both parts have identical capacitance (330 µF), voltage rating (10 V), tolerance (±20%), polarization, lead spacing (5.00mm), and through-hole mounting configuration. However, the UBT series has larger physical dimensions (10.00mm diameter versus 6.30mm diameter), which must be confirmed to fit within the PCB layout.

Q: What are the key differences between these two parts?

A: The primary differences are physical size, lifetime rating, ripple current capacity, and operating temperature range. The UBT1A331MPD8TD is larger, rated for 5000 hours at 125°C (compared to 1000 hours at 105°C), supports higher ripple currents (310 mA at 120 Hz and 620 mA at 100 kHz versus 200 mA and 300 mA respectively), and operates across a wider temperature range (-40°C to 125°C versus -55°C to 105°C).

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant and active products. The EEU-HD1A331B has unlimited moisture sensitivity (MSL 1), while the UBT1A331MPD8TD is not applicable for MSL rating. Both carry EAR99 ECCN classification.

Q: Will the larger size of the UBT1A331MPD8TD affect my circuit performance?

A: Physical size does not affect electrical performance. The larger can diameter and height are due to the enhanced internal design supporting higher ripple current and extended lifetime. Electrical characteristics remain equivalent for the specified 330 µF, 10 V application.

Q: Which part should I select for new designs?

A: Selection depends on application requirements. For general-purpose applications with standard thermal and ripple current demands, either part is suitable. For automotive applications or circuits requiring extended lifetime and higher ripple current handling, the UBT1A331MPD8TD is the appropriate choice. PCB layout constraints may dictate the EEU-HD1A331B due to its smaller physical footprint.