SEKR47M350ST Equivalent & Substitute Parts

Part Overview

The SEKR47M350ST is a 0.47 µF, 350 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 105°C and is rated for 2000 hours at maximum temperature, serving general-purpose applications requiring stable capacitance and voltage performance.

Key Parameters

Parameter	Value
Capacitance	0.47 µF
Voltage Rating	350 V
Tolerance	±20%
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.138" (3.50 mm)
Diameter	0.315" (8.00 mm)
Operating Temperature Range	-40°C to 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SEKR47M350ST is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

Capacitance value: 0.47 µF (exact match required)
Voltage rating: 350 V (exact match required)
Tolerance: ±20% (exact match required)

Mechanical Parameters:

Package type: Radial, Can (exact match required)
Mounting type: Through Hole (exact match required)
Lead spacing: 0.138" (3.50 mm) (exact match required)
Physical dimensions: 0.315" diameter (8.00 mm) (exact match required)

Compliance Parameters:

RoHS3 compliance (required for modern procurement)
REACH unaffected status (required for regulatory compliance)

The substitute part UPW2VR47MPD from Nichicon meets all electrical, mechanical, and compliance requirements. Both parts share identical capacitance, voltage rating, tolerance, lead spacing, and diameter specifications. Physical height differs by 0.020" (0.50 mm), which remains within acceptable mechanical tolerance for through-hole radial can packages in standard PCB layouts.

Parameter Comparison

Parameter	SEKR47M350ST (CDE)	UPW2VR47MPD (Nichicon)
Manufacturer	Cornell Dubilier Electronics	Nichicon
Series	SEK	UPW
Capacitance	0.47 µF	0.47 µF
Voltage Rating	350 V	350 V
Tolerance	±20%	±20%
Lead Spacing	0.138" (3.50 mm)	0.138" (3.50 mm)
Diameter	0.315" (8.00 mm)	0.315" (8.00 mm)
Height (Max)	0.433" (11.00 mm)	0.453" (11.50 mm)
Operating Temperature	-40°C to 105°C	-40°C to 105°C
Lifetime @ 105°C	2000 Hrs	3000 Hrs
Package Type	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Obsolete

Engineering Selection Recommendations

The UPW2VR47MPD from Nichicon is a direct electrical and mechanical equivalent to the SEKR47M350ST. Both components are obsolete products, requiring substitution for new procurement activities. Selection between these parts is based on availability and compliance status rather than performance differentiation.

Compliance Verification: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying modern regulatory requirements for electronic component procurement. No additional compliance screening is required for either part.

Physical Compatibility: The 0.020" (0.50 mm) height difference between the two parts does not impact through-hole PCB assembly compatibility. Standard radial can package mounting tolerances accommodate this variation without design modification.

Availability Consideration: Current inventory shows 683 units of SEKR47M350ST and 881 units of UPW2VR47MPD in stock. Selection should prioritize available inventory aligned with project procurement timelines.

Frequently Asked Questions (FAQ)

Q: Can UPW2VR47MPD replace SEKR47M350ST in existing designs?

A: Yes. Both parts share identical electrical specifications (0.47 µF, 350 V, ±20% tolerance) and mechanical dimensions (0.138" lead spacing, 0.315" diameter). The 0.020" height difference is within acceptable tolerance for through-hole radial can packages and requires no PCB layout modification.

Q: What is the significance of the 1000-hour lifetime difference?

A: The UPW2VR47MPD is rated for 3000 hours at 105°C compared to 2000 hours for the SEKR47M350ST. This parameter is provided for reference only and does not affect substitution eligibility. Both parts meet the electrical and mechanical requirements for equivalent functionality.

Q: Are both parts suitable for new designs?

A: Both parts are classified as obsolete. For new design work, consultation with component suppliers is recommended to identify current-production alternatives with equivalent electrical and mechanical specifications.

Q: What packaging formats are available?

A: SEKR47M350ST is supplied in standard packaging format. UPW2VR47MPD is supplied in bulk packaging. Both are through-hole radial can packages suitable for standard PCB assembly processes.

Q: Do these parts require any special handling or storage conditions?

A: Both parts are aluminum electrolytic capacitors with moisture sensitivity level classified as not applicable. Standard component storage practices apply.

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