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5KP22CA-B Equivalent & Substitute Parts
Part Overview
The 5KP22CA-B is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage 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 924 units in stock. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative packaging or performance requirements within specified electrical parameters.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | 5KP22CA-B | — |
| Manufacturer | Littelfuse Inc. | — |
| Category | Transient Voltage Suppressors (TVS) | — |
| Type | Zener | — |
| Voltage - Reverse Standoff (Typ) | 22 | V |
| Voltage - Breakdown (Min) | 24 | V |
| Voltage - Clamping (Max) @ Ipp | 35.5 | V |
| Current - Peak Pulse (10/1000µs) | 143.7 | A |
| Power - Peak Pulse | 5000 | W |
| Operating Temperature Range | -55 to 175 | °C |
| Mounting Type | Through Hole | — |
| Package / Case | P600, Axial | — |
| RoHS Status | ROHS3 Compliant | — |
| Product Status | Active | — |
Substitute Part Grouping Explanation
Substitution eligibility for the 5KP22CA-B is determined by the following critical parameters:
- Voltage - Reverse Standoff (Typ): 22V nominal
- Voltage - Breakdown (Min): 24V minimum
- Voltage - Clamping (Max) @ Ipp: 35.5V maximum
- Current - Peak Pulse (10/1000µs): 143.7A nominal
- Power - Peak Pulse: 5000W nominal
- Bidirectional Channels: 1
- Type: Zener
- Mounting Type: Through Hole
- Operating Temperature: -55°C to 175°C
Substitute parts are grouped into two categories:
Category A - Direct Electrical Equivalents (Same Power Rating): Parts maintaining the 5000W peak pulse power rating and P600 package form factor with identical or equivalent electrical characteristics.
Category B - Functional Equivalents (Lower Power Rating): Parts with reduced peak pulse power ratings (1500W or 600W) but compatible voltage parameters, suitable for applications with lower transient current requirements.
Category C - Alternative Package Equivalents: Parts with identical electrical specifications but different through-hole package configurations (DO-201, DO-15, R-6).
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 / Case | Operating Temp (°C) | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| 5KP22CA-B | Littelfuse Inc. | 22 | 24 | 35.5 | 143.7 | 5000 | P600, Axial | -55 to 175 | ROHS3 |
| 5KP22CA | Littelfuse Inc. | 22 | 24 | 35.5 | 143.7 | 5000 | P600, Axial | -55 to 175 | ROHS3 |
| 5KP22CA-TP | Micro Commercial Co | 22 | 24.4 | 35.5 | — | 5000 | R-6, Axial | -55 to 175 | ROHS3 |
| 1.5KE22CA | Taiwan Semiconductor Corporation | 18.8 | 20.9 | 30.6 | 51 | 1500 | DO-201AA, Axial | -55 to 175 | ROHS3 |
| 1.5KE27CA | Taiwan Semiconductor Corporation | 23.1 | 25.7 | 37.5 | 42 | 1500 | DO-201AA, Axial | -55 to 175 | ROHS3 |
| P6KE24CA | Fairchild Semiconductor | 20.5 | 22.8 | 33.2 | 19 | 600 | DO-204AC, Axial | -50 to 175 | — |
| P6KE27CA | Diotec Semiconductor | 23.1 | 25.7 | 37.5 | 16.8 | 600 | DO-204AC, Axial | -50 to 175 | ROHS3 |
Engineering Selection Recommendations
5KP22CA (Littelfuse Inc.): Direct equivalent to 5KP22CA-B with identical electrical specifications and P600 package. Differs only in packaging format (Cut Tape vs. Bulk). Recommended for applications requiring the same performance envelope with alternative supply chain sourcing. ROHS3 compliant and active product status.
5KP22CA-TP (Micro Commercial Co): Maintains 5000W peak pulse power and 22V reverse standoff voltage with R-6 package configuration. Suitable for designs accommodating alternative through-hole package geometry. ROHS3 compliant and active product status. Peak pulse current specification not provided.
1.5KE22CA (Taiwan Semiconductor Corporation): Functional equivalent with reduced power rating (1500W vs. 5000W) and lower peak pulse current (51A vs. 143.7A). Voltage parameters remain within acceptable range for 22V nominal applications. DO-201 package provides alternative form factor. ROHS3 compliant and active product status. Recommended for lower transient energy applications.
1.5KE27CA (Taiwan Semiconductor Corporation): Functional equivalent with 1500W power rating and 23.1V reverse standoff voltage. Clamping voltage (37.5V) exceeds primary part specification. DO-201 package configuration. ROHS3 compliant and active product status. Suitable for applications tolerating higher clamping voltage with reduced transient current capacity.
P6KE24CA (Fairchild Semiconductor): Lower power rating (600W) with 20.5V reverse standoff voltage. DO-15 package configuration. Operating temperature minimum of -50°C (vs. -55°C). Suitable only for applications with minimal transient energy requirements. RoHS compliance status not specified.
P6KE27CA (Diotec Semiconductor): Lower power rating (600W) with 23.1V reverse standoff voltage and 37.5V clamping voltage. DO-15 package configuration. Operating temperature minimum of -50°C. ROHS3 compliant and active product status. Suitable for low-energy transient suppression applications.
Frequently Asked Questions (FAQ)
Q: Can 1.5KE22CA replace 5KP22CA-B in all applications?
A: No. The 1.5KE22CA has a peak pulse power rating of 1500W compared to 5000W for the 5KP22CA-B. Substitution is valid only for applications where transient energy does not exceed 1500W. Peak pulse current is reduced from 143.7A to 51A. Verify application transient specifications before substitution.
Q: What is the difference between 5KP22CA and 5KP22CA-B?
A: Both parts have identical electrical specifications and P600 package. The difference is packaging format: 5KP22CA-B is supplied in Bulk packaging, while 5KP22CA is supplied in Cut Tape format. Electrical performance and compatibility are equivalent.
Q: Can P6KE27CA be used instead of 5KP22CA-B?
A: P6KE27CA is a lower-power alternative (600W vs. 5000W) with DO-15 package instead of P600. It is suitable only for applications with significantly lower transient energy requirements. The 37.5V clamping voltage exceeds the primary part specification. Do not substitute in high-energy transient environments.
Q: Are all substitute parts ROHS3 compliant?
A: Most substitute parts listed are ROHS3 compliant. P6KE24CA (Fairchild Semiconductor) does not specify RoHS compliance status. Verify compliance requirements for your application before selection.
Q: What is the impact of different package types (P600, DO-201, DO-15, R-6)?
A: Package type affects board layout, PCB footprint, and mechanical mounting. All listed packages are through-hole axial configurations. Verify PCB design compatibility with selected package before substitution. Electrical performance is independent of package type.
Q: Can 5KP22CA-TP be used as a direct replacement for 5KP22CA-B?
A: Yes, for applications accommodating R-6 package geometry. Both maintain 5000W peak pulse power and 22V reverse standoff voltage. Peak pulse current specification is not provided for 5KP22CA-TP. Verify PCB footprint compatibility before substitution.
Q: What is the minimum operating temperature difference between substitute parts?
A: The primary part and most substitutes operate from -55°C. P6KE24CA and P6KE27CA have a minimum operating temperature of -50°C. For applications requiring -55°C operation, these parts are not suitable.
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