K3002GRP Equivalent & Substitute Parts

Part Overview

The K3002GRP is a SIDAC thyristor manufactured by Littelfuse, designed for transient voltage suppression and overvoltage protection applications. This component operates in the 270–330V breakover voltage range with a 1A peak output current rating and is housed in a DO-15 axial package. The part is currently in active production status with 2,781 units available in inventory.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances for this product category, particularly when the original part becomes unavailable or when alternative sourcing is required for supply chain optimization.

Substiute Parts

K3002GRP

LittelfuseIn Stock: 2871K3002GRP Datasheet

Current PartRFQ

TPA220

STMicroelectronicsIn Stock: 2092TPA220 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the K3002GRP is determined by the following critical parameters:

• Voltage Rating Compatibility: Breakover voltage must fall within or overlap the 270–330V range of the main part
• Current Handling: Hold current (Ih) and peak output current must meet or exceed the specified 150 mA and 1 A requirements
• Package Compatibility: Physical form factor must be DO-15 axial or equivalent mechanical footprint
• Regulatory Compliance: RoHS3 compliance and REACH unaffected status required
• Product Availability: Active or Last Time Buy status acceptable for engineering applications

The TPA220 from STMicroelectronics meets these criteria as a TVS thyristor with compatible voltage and current ratings, identical package configuration, and equivalent regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

K3002GRP (Primary Selection)

The K3002GRP remains the preferred choice for new designs and ongoing production due to its active product status and established supply availability (2,781 units in stock). This component is suitable for standard overvoltage protection applications requiring the specified voltage and current parameters.

TPA220 (Alternative Selection)

The TPA220 is qualified as a functional equivalent based on matching breakover voltage (293V within the 270–330V range), identical hold current rating (150 mA), and compatible package configuration. However, the TPA220 carries a Last Time Buy status, indicating limited future availability. This part is appropriate for applications where the higher peak pulse current rating (150A vs. 1A) provides additional transient suppression margin, provided that design validation confirms compatibility with the TVS thyristor operating characteristics.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the TPA220 directly replace the K3002GRP in existing designs?

A: The TPA220 is electrically compatible based on matching breakover voltage and hold current specifications. Both components use identical DO-15 axial packaging and through-hole mounting. However, the TPA220 is classified as a TVS thyristor rather than a SIDAC, which may affect transient response characteristics. Design validation is necessary to confirm performance equivalence in the specific application circuit.

Q: What is the significance of the Last Time Buy status for the TPA220?

A: Last Time Buy status indicates that STMicroelectronics has announced end-of-life for this part number. New orders may be accepted for a limited period, but long-term availability cannot be guaranteed. For applications requiring sustained production, the K3002GRP is the recommended choice due to its active status.

Q: Are there differences in current handling between these parts?

A: The K3002GRP specifies a 1A peak output current, while the TPA220 provides 150A peak pulse current (8/20µs) and 50A peak pulse current (10/1000µs). The TPA220's higher current rating reflects its TVS thyristor design optimized for transient suppression. Application requirements determine whether this additional capacity is beneficial or unnecessary.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the K3002GRP and TPA220 are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations applicable to electronic components.

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

A: The K3002GRP operates across -40°C to 125°C (junction temperature). The TPA220 specifications provided do not include an explicit operating temperature range; this parameter should be verified in the STMicroelectronics datasheet for complete thermal design considerations.