5KP28AE3/TR13 Equivalent & Substitute Parts

Part Overview

The 5KP28AE3/TR13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This component features a 28V reverse standoff voltage with a 45.4V maximum clamping voltage and 110A peak pulse current capability in a P600 axial through-hole package. The part is currently active in production and ROHS3 compliant.

Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements where alternative electrical or mechanical characteristics may be acceptable within defined parameters.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	28	V
Voltage - Breakdown (Min)	31.1	V
Voltage - Clamping (Max) @ Ipp	45.4	V
Current - Peak Pulse (10/1000µs)	110	A
Power - Peak Pulse	5000	W
Operating Temperature Range	-55 to 175	°C (TJ)
Package / Case	P600, Axial	—
Mounting Type	Through Hole	—
Type	Zener	—
Unidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the 5KP28AE3/TR13 are classified into two categories based on electrical and mechanical compatibility:

Direct Electrical Equivalents maintain identical or near-identical electrical specifications including reverse standoff voltage (28V), breakdown voltage (31.1V minimum), clamping voltage (45.4V maximum), and peak pulse current (110A nominal). These parts are interchangeable in applications where the P600 axial package and through-hole mounting are required.

Similar Voltage-Class Alternatives share the same 28V reverse standoff voltage and comparable clamping voltage characteristics but differ in peak pulse current capacity and power dissipation ratings. These parts are suitable for applications where higher current handling or power dissipation is required, or where alternative package configurations are acceptable.

Key substitution criteria:

Reverse standoff voltage: 28V (required)
Voltage - Breakdown (Min): 31.1V to 31.3V (acceptable range)
Voltage - Clamping (Max): 45.4V to 50V (acceptable range)
Current - Peak Pulse: 110A minimum (higher values acceptable)
Power - Peak Pulse: 5000W minimum (higher values acceptable)
Operating Temperature: -55°C to 175°C (required)
Type: Zener, Unidirectional (required)
RoHS Status: ROHS3 Compliant (required)

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Breakdown Min (V)	Voltage - Clamping Max (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Package	Packaging Type	Product Status
5KP28AE3/TR13	Microchip Technology	28	31.1	45.4	110	5000	P600	Tape & Reel	Active
5KP28A-E3/54	Vishay General Semiconductor - Diodes Division	28	31.1	45.4	110	5000	P600	Cut Tape	Active
5KP28A	Littelfuse Inc.	28	31.1	45.4	112.3	5000	P600	Cut Tape	Active
SLD28U-017	Littelfuse Inc.	28	31.1	45.4	112.3	5000	P600	Cut Tape	Active
3KP28A-TP	Micro Commercial Co	28	31.1	45.4	—	3000	R-6	Cut Tape	Active
15KPA28A	MDE Semiconductor Inc	28	31.28	47.5	317.9	15000	P600	Bulk	Active
30KPA28A	MDE Semiconductor Inc	28	31.3	50.0	606	30000	P600	Bulk	Active
LCE28A	Littelfuse Inc.	28	31.1	45.5	33	1500	DO-201	Cut Tape	Active
LCE24A	Littelfuse Inc.	24	26.7	38.9	39	1500	DO-201	Cut Tape	Active

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical and Mechanical Specifications)

The 5KP28A-E3/54 (Vishay General Semiconductor - Diodes Division) and 5KP28A (Littelfuse Inc.) are direct electrical equivalents with matching 28V reverse standoff voltage, 31.1V breakdown voltage, 45.4V clamping voltage, and 5000W peak pulse power rating in P600 axial packages. Both parts are ROHS3 compliant and active in production. The primary difference is packaging format: 5KP28A-E3/54 is supplied in cut tape, while 5KP28AE3/TR13 is supplied in tape and reel. Selection between these parts depends on procurement quantity and assembly line requirements.

The SLD28U-017 (Littelfuse Inc.) provides identical electrical specifications and P600 package configuration with automotive-grade qualification (AEC-Q101). This part is suitable for applications requiring automotive-level reliability and traceability.

Higher Current Capacity Alternatives

The 15KPA28A and 30KPA28A (MDE Semiconductor Inc) maintain the 28V reverse standoff voltage and P600 axial package but provide significantly higher peak pulse current capacity (317.9A and 606A respectively) and power dissipation (15000W and 30000W respectively). These parts are suitable for applications requiring enhanced transient protection with greater energy absorption capability. Both parts are ROHS3 compliant and active in production.

Lower Power Alternatives

The 3KP28A-TP (Micro Commercial Co) provides matching voltage specifications but reduced power dissipation (3000W) in an R-6 axial package. This part is suitable for space-constrained applications where lower power handling is acceptable. The LCE28A (Littelfuse Inc.) offers matching voltage specifications with reduced peak pulse current (33A) and power dissipation (1500W) in a DO-201 package, suitable for lower-energy transient protection requirements.

Non-Recommended Alternatives

The LCE24A (Littelfuse Inc.) operates at 24V reverse standoff voltage, which differs from the 28V specification of the main part and is not suitable as a direct substitute.

Frequently Asked Questions (FAQ)

Q: Can the 5KP28A-E3/54 replace the 5KP28AE3/TR13 in production assembly?

A: Yes. Both parts share identical electrical specifications (28V reverse standoff, 31.1V breakdown, 45.4V clamping, 110A peak pulse current, 5000W power dissipation) and P600 axial through-hole package configuration. The difference is packaging format: 5KP28A-E3/54 is supplied in cut tape while 5KP28AE3/TR13 is supplied in tape and reel. Assembly equipment compatibility with cut tape format must be verified.

Q: What is the difference between the 5KP28A and SLD28U-017?

A: Both parts have identical electrical specifications and P600 package configuration. The SLD28U-017 carries automotive-grade qualification (AEC-Q101) and is designated for automotive applications requiring enhanced reliability documentation and traceability. Selection depends on application requirements and qualification standards.

Q: Can I use the 15KPA28A or 30KPA28A as substitutes?

A: Yes, for applications where higher transient energy absorption is required. Both parts maintain the 28V reverse standoff voltage and P600 axial package but provide significantly higher peak pulse current (317.9A and 606A) and power dissipation (15000W and 30000W). These parts are suitable for high-energy transient environments. Verify that circuit design accommodates the higher clamping voltage (47.5V and 50V respectively).

Q: Why is the LCE24A listed but not recommended?

A: The LCE24A operates at 24V reverse standoff voltage, which does not meet the 28V specification requirement of the main part. It is not a suitable substitute for applications requiring 28V protection.

Q: What are the package differences between P600 and R-6?

A: Both are axial through-hole packages for TVS diodes. The P600 is the standard package for the 5KP28AE3/TR13. The R-6 package (used by 3KP28A-TP) is a smaller alternative suitable for space-constrained applications but with reduced power dissipation (3000W versus 5000W).

Q: Can I use the LCE28A as a substitute?

A: The LCE28A matches the 28V reverse standoff voltage and 45.5V clamping voltage but differs in package type (DO-201 versus P600) and has significantly reduced peak pulse current (33A versus 110A) and power dissipation (1500W versus 5000W). It is suitable only for lower-energy transient protection applications where the DO-201 package is acceptable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the 5KP28AE3/TR13.

Q: What is the operating temperature range for all substitute parts?

A: All substitute parts operate across the -55°C to 175°C (TJ) temperature range, matching the main part specification.

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