P4802ACMCL Equivalent & Substitute Parts

Part Overview

The P4802ACMCL is an active SIDACtor® thyristor transient voltage suppressor manufactured by Littelfuse Inc., designed for overvoltage protection in 220V and 440V applications. This through-hole mounted device delivers 400A peak pulse current (8/20µs) with a 4V on-state voltage and 150mA holding current. The component is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1), making it suitable for industrial and commercial protection circuits. Substitute parts are identified when electrical performance parameters and mechanical compatibility remain within specified tolerances.

Substiute Parts

P4802ACMCL

Littelfuse Inc.In Stock: 1111P4802ACMCL Datasheet

Current PartRFQ

P4802ACL

Littelfuse Inc.In Stock: 2430P4802ACL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The P4802ACL qualifies as a direct substitute for the P4802ACMCL based on the following criteria:

Matching Parameters (Substitution Basis):

• Voltage - Breakover: 300V, 600V
• Voltage - Off State: 220V, 440V
• Voltage - On State: 4V
• Current - Peak Pulse (8/20µs): 400A
• Current - Peak Pulse (10/1000µs): 100A
• Current - Hold (Ih): 150mA
• Number of Elements: 2
• Mounting Type: Through Hole
• Package / Case: 3-SIP
• Supplier Device Package: TO-220 Modified
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Differing Parameter:

• Capacitance: P4802ACMCL (30pF, 45pF) vs. P4802ACL (50pF, 85pF)

The capacitance difference does not prevent substitution when the application circuit design accommodates the higher capacitance values of the P4802ACL.

Parameter Comparison

Engineering Selection Recommendations

Both P4802ACMCL and P4802ACL are active products from Littelfuse Inc. with identical electrical performance across voltage and current specifications. Both components meet ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for industrial applications.

The P4802ACL carries higher inventory availability (2400 pcs vs. 1100 pcs), providing supply chain advantage. Selection between these parts depends on circuit-level capacitance requirements. The P4802ACMCL with lower capacitance (30pF, 45pF) suits applications requiring minimal parasitic capacitance, while the P4802ACL with higher capacitance (50pF, 85pF) is suitable for circuits where this parameter does not impose design constraints.

Both components share identical mechanical compatibility (3-SIP, TO-220 Modified package) and thermal characteristics (MSL 1), enabling direct PCB-level substitution when electrical parameters align with application requirements.

Frequently Asked Questions (FAQ)

Q: Can P4802ACL replace P4802ACMCL in existing designs?

A: Yes, when the application circuit accommodates the higher capacitance specification (50pF, 85pF vs. 30pF, 45pF). All voltage, current, and mechanical parameters are identical. PCB layout and component placement require no modification.

Q: What is the primary difference between these parts?

A: Capacitance values differ. P4802ACMCL specifies 30pF and 45pF; P4802ACL specifies 50pF and 85pF. All other electrical and mechanical parameters are identical.

Q: Are both parts suitable for 220V and 440V protection circuits?

A: Yes. Both parts feature identical off-state voltage ratings (220V, 440V) and breakover voltage specifications (300V, 600V), making them functionally equivalent for these protection applications.

Q: Do package and mounting specifications differ?

A: No. Both parts use 3-SIP package configuration with TO-220 Modified supplier device package and through-hole mounting. No PCB redesign is required for substitution.

Q: What compliance certifications apply to both parts?

A: Both P4802ACMCL and P4802ACL are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level is 1 (unlimited) for both components.

Q: Which part should be selected for new designs?

A: Selection depends on circuit capacitance tolerance. For applications where lower capacitance is required, specify P4802ACMCL. For general-purpose 220V/440V overvoltage protection where capacitance is not a limiting factor, P4802ACL offers superior inventory availability.