5KP90C-B Equivalent & Substitute Parts

Part Overview

The 5KP90C-B is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., rated for 90V reverse standoff voltage with 5000W peak pulse power handling. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 5KP90C-B operates across -55°C to 175°C and is housed in a P600 axial through-hole package, suitable for general-purpose transient protection applications.

Key Parameters

Parameter	5KP90C-B
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Bidirectional Channels	1
Voltage - Reverse Standoff (Typ)	90V
Voltage - Breakdown (Min)	94.95V
Voltage - Clamping (Max) @ Ipp	153.3V
Power - Peak Pulse	5000W (5kW)
Operating Temperature	-55°C ~ 175°C (TJ)
Mounting Type	Through Hole
Package / Case	P600, Axial
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 5KP90C-B is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 90V ±5% tolerance
Voltage - Breakdown (Min): 94.95V minimum
Power - Peak Pulse: 5000W (5kW) minimum
Bidirectional Channels: 1
Mounting Type: Through Hole
Package compatibility: P600 axial preferred; DO-201 and DO-15 acceptable with circuit board layout adjustment

Substitution Groups:

Group 1 - Direct P600 Package Equivalents (Preferred) These parts maintain identical package form factor and power rating, requiring no PCB layout modifications:

5KP90CA (Littelfuse Inc., Active status)
5KP90CA-B (Littelfuse Inc., Active status)
5KP90CE3/TR13 (Microchip Technology, Active status)

Group 2 - Lower Power Alternatives (DO-201 Package) These parts reduce power handling to 1500W and use DO-201 axial package, suitable for lower-energy transient environments:

1.5KE100CA (Diotec Semiconductor, Active status)
1.5KE110CA (Taiwan Semiconductor Corporation, Active status)

Group 3 - Lower Power Alternatives (DO-15 Package) These parts reduce power handling to 600W and use DO-15 axial package, suitable for minimal transient energy applications:

P6KE91CA (Fairchild Semiconductor, Active status)
P6KE100CA (Fairchild Semiconductor, Active status)
P6KE110CA (Taiwan Semiconductor Corporation, Active status)

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Power - Peak Pulse	Package / Case	Product Status
5KP90C-B	Littelfuse Inc.	90V	94.95V	153.3V	5000W	P600, Axial	Obsolete
5KP90CA	Littelfuse Inc.	90V	100V	146V	5000W	P600, Axial	Active
5KP90CA-B	Littelfuse Inc.	90V	100V	146V	5000W	P600, Axial	Active
5KP90CE3/TR13	Microchip Technology	90V	100V	160V	5000W	P600, Axial	Active
1.5KE100CA	Diotec Semiconductor	85.5V	95V	137V	1500W	DO-201AA, Axial	Active
1.5KE110CA	Taiwan Semiconductor Corporation	94V	105V	152V	1500W	DO-201AA, Axial	Active
P6KE91CA	Fairchild Semiconductor	77.8V	86.5V	125V	600W	DO-204AC, Axial	Active
P6KE100CA	Fairchild Semiconductor	85.5V	95V	137V	600W	DO-204AC, Axial	Active
P6KE110CA	Taiwan Semiconductor Corporation	94V	105V	152V	600W	DO-204AC, Axial	Active

Engineering Selection Recommendations

For Direct Replacement (No PCB Modification Required):

Select 5KP90CA or 5KP90CA-B from Littelfuse Inc. Both maintain identical 90V standoff voltage, 5000W power rating, and P600 package form factor. Both parts carry Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The 5KP90CA-B in bulk packaging offers cost efficiency for high-volume applications.

For Equivalent Performance with Alternative Package:

Select 5KP90CE3/TR13 from Microchip Technology. This part maintains 90V standoff voltage and 5000W power rating in P600 package with Active status and ROHS3 compliance. The higher clamping voltage (160V) provides additional transient margin.

For Reduced Power Applications:

If circuit analysis confirms transient energy below 1500W, select 1.5KE100CA or 1.5KE110CA. Both use DO-201 axial packages requiring minor PCB layout adjustment. The 1.5KE110CA from Taiwan Semiconductor Corporation provides closer voltage matching (94V standoff) and Active status with ROHS3 compliance.

For Minimal Transient Energy Applications:

If circuit analysis confirms transient energy below 600W, select P6KE100CA or P6KE110CA. Both use DO-15 packages with significant PCB footprint reduction. The P6KE110CA from Taiwan Semiconductor Corporation provides 94V standoff voltage matching with Active status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can I use 5KP90CA as a direct replacement for 5KP90C-B?

A: Yes. Both parts share identical 90V reverse standoff voltage, 5000W peak pulse power, and P600 axial package. The 5KP90CA is Active status, addressing the obsolescence of the 5KP90C-B. No circuit or PCB modifications are required.

Q: What is the difference between 5KP90CA and 5KP90CA-B?

A: Both parts are electrically identical with 90V standoff voltage and 5000W power rating. The primary difference is packaging: 5KP90CA is supplied in Cut Tape, while 5KP90CA-B is supplied in Bulk. Select based on procurement and assembly requirements.

Q: Can I substitute a DO-201 package part like 1.5KE100CA for the P600 package 5KP90C-B?

A: Electrical substitution is possible if transient energy analysis confirms operation below 1500W. However, DO-201 and P600 packages have different physical dimensions and lead spacing. PCB layout modification is required. Verify mechanical fit before implementation.

Q: Why do the 1.5KE series parts have lower power ratings than the 5KP series?

A: The 1.5KE series is rated for 1500W peak pulse power, compared to 5000W for the 5KP series. Selection depends on actual transient energy in your circuit. Oversizing power rating adds cost and board space without functional benefit.

Q: Are all substitute parts ROHS3 compliant?

A: The 5KP90CA, 5KP90CA-B, 5KP90CE3/TR13, 1.5KE110CA, P6KE110CA, and P6KE91CA are ROHS3 compliant. The 1.5KE100CA and P6KE100CA have undefined or not applicable RoHS status. Verify compliance requirements for your application before selection.

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

A: All substitute parts operate across -55°C to 175°C junction temperature, matching the 5KP90C-B specification. This ensures thermal performance consistency across all recommended alternatives.

Q: Can I use P6KE91CA instead of P6KE100CA?

A: Both parts use DO-15 packages and 600W power rating. The P6KE91CA has 77.8V standoff voltage, while P6KE100CA has 85.5V. Selection depends on your circuit's required protection threshold. Verify voltage compatibility before substitution.

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