5KP210A-B Equivalent & Substitute Parts

Part Overview

The 5KP210A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This through-hole component operates across a temperature range of -55°C to 175°C and is ROHS3 compliant. The part is currently active in production with 790 units in stock. Equivalent and substitute parts are identified when design requirements permit variations in packaging format, manufacturer, or when higher inventory availability is needed for procurement optimization.

Substiute Parts

5KP210A-B

Littelfuse Inc.In Stock: 8925KP210A-B Datasheet

Current PartRFQ

1.5KE250A

Taiwan Semiconductor CorporationIn Stock: 79171.5KE250A Datasheet

MFR RecommendedRFQ

P4KE250A

Taiwan Semiconductor CorporationIn Stock: 3091P4KE250A Datasheet

MFR RecommendedRFQ

P6KE250A

Taiwan Semiconductor CorporationIn Stock: 37458P6KE250A Datasheet

MFR RecommendedRFQ

5KP210A-TP

Micro Commercial CoIn Stock: 12835KP210A-TP Datasheet

MFR RecommendedRFQ

P6KE250A-TP

Micro Commercial CoIn Stock: 733P6KE250A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP210A-B is determined by the following critical parameters: unidirectional channel configuration (1 channel required), voltage classification (reverse standoff and clamping voltage ranges), peak pulse current capability, power dissipation rating, through-hole mounting requirement, and axial package format. Substitute parts must maintain compatibility within these electrical and mechanical constraints.

The identified substitute parts are grouped into two categories:

Category 1: Direct Electrical Equivalents (Same Voltage Class)

• 5KP210A-TP: Identical electrical specifications with alternative packaging format (Cut Tape vs. Bulk)

Category 2: Functional Alternatives (Similar Voltage Class with Reduced Power Handling)

• 1.5KE250A, P4KE250A, P6KE250A, P6KE250A-TP: These parts operate in the 214V reverse standoff / 237V breakdown range with 344V clamping voltage. Peak pulse current and power dissipation vary by model, requiring application-level assessment for suitability.

Parameter Comparison

Engineering Selection Recommendations

5KP210A-TP is the primary direct substitute for 5KP210A-B. Both parts maintain identical electrical specifications (210V reverse standoff, 349.5V clamping, 5000W peak pulse power) and through-hole axial mounting. The difference is packaging format: 5KP210A-TP is supplied in Cut Tape format versus Bulk for the original part. Both are ROHS3 compliant and active products. Selection between these two depends on procurement quantity requirements and assembly process compatibility.

1.5KE250A, P4KE250A, P6KE250A, and P6KE250A-TP are functional alternatives suitable only when application requirements permit reduced peak pulse current and power dissipation. These parts operate at slightly higher reverse standoff voltage (214V vs. 210V) and lower clamping voltage (344V vs. 349.5V). Peak pulse current ranges from 1.2A to 4.5A, compared to 14.6A for the 5KP210A-B. All substitute parts are ROHS3 compliant and active products. These alternatives are appropriate for lower-energy transient suppression applications or when package size constraints necessitate smaller form factors (DO-15, DO-41, DO-201).

Frequently Asked Questions (FAQ)

Q: Can 5KP210A-TP be used as a direct replacement for 5KP210A-B?

A: Yes. Both parts have identical electrical specifications: 210V reverse standoff, 233V breakdown minimum, 349.5V clamping voltage, and 5000W peak pulse power. The only difference is packaging format (Cut Tape vs. Bulk). Compatibility depends on your assembly process requirements.

Q: What is the key difference between 5KP210A-B and the 1.5KE250A / P4KE250A / P6KE250A alternatives?

A: The primary differences are peak pulse current capability and power dissipation. The 5KP210A-B handles 14.6A peak pulse current and 5000W power, while alternatives range from 1.2A to 4.5A peak pulse current and 400W to 1500W power. Voltage specifications are similar but not identical. These alternatives are suitable only for lower-energy transient protection applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts, including 5KP210A-TP, 1.5KE250A, P4KE250A, P6KE250A, and P6KE250A-TP, are ROHS3 compliant.

Q: What package formats are available for these TVS diodes?

A: The 5KP210A-B uses P600 axial package. The 5KP210A-TP uses R-6 axial package. Lower-power alternatives use smaller packages: DO-201 (1.5KE250A), DO-204AL/DO-41 (P4KE250A), and DO-204AC/DO-15 (P6KE250A and P6KE250A-TP). All are through-hole axial configurations.

Q: Can I substitute a lower-power part like P6KE250A for the 5KP210A-B?

A: Only if your application's transient energy requirements are lower than the 5KP210A-B specifications. The P6KE250A dissipates 600W peak pulse power versus 5000W for the 5KP210A-B. Verify that your circuit's transient voltage and current profiles do not exceed the substitute part's ratings.

Q: What is the inventory status of these parts?

A: 5KP210A-B has 790 units in stock. 5KP210A-TP has 1268 units. Among alternatives, P6KE250A has the highest availability at 37,400 units, followed by 1.5KE250A at 7900 units, P4KE250A at 3040 units, and P6KE250A-TP at 623 units.