20KPA216-B Equivalent & Substitute Parts

Part Overview

The 20KPA216-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 216V reverse standoff voltage rating with a maximum clamping voltage of 365.4V at peak pulse current. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and new designs.

Substiute Parts

20KPA216-B

Littelfuse Inc.In Stock: 109720KPA216-B Datasheet

Current PartRFQ

20KPA216A

MDE Semiconductor IncIn Stock: 212220KPA216A Datasheet

DirectRFQ

20KPA216A-B

Littelfuse Inc.In Stock: 101720KPA216A-B Datasheet

DirectRFQ

30KPA216AE3/TR13

Microchip TechnologyIn Stock: 121530KPA216AE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 20KPA216-B is determined by the following critical parameters:

• Reverse Standoff Voltage: Must be 216V (Typ)
• Package / Case: Must be P600, Axial (Through Hole)
• Type: Must be Zener, Unidirectional
• Operating Temperature Range: Must support -55°C ~ 175°C (TJ)
• Unidirectional Channels: Must be 1

Substitute parts are grouped into two categories based on electrical performance:

Category 1 - Direct Electrical Equivalents: Parts with identical reverse standoff voltage (216V), matching peak pulse current (58A), and equivalent clamping voltage performance (348V–365.4V range). These parts are pin-compatible and functionally interchangeable.

Category 2 - Enhanced Performance Alternatives: Parts with identical reverse standoff voltage (216V) and package, but with increased peak pulse current and power ratings. These provide superior transient suppression capability while maintaining backward compatibility.

Parameter Comparison

Engineering Selection Recommendations

20KPA216A (MDE Semiconductor Inc) and 20KPA216A-B (Littelfuse Inc.) are direct electrical equivalents to the obsolete 20KPA216-B. Both parts maintain identical reverse standoff voltage, peak pulse current, and package specifications. The 20KPA216A-B is preferred for designs requiring continuity with Littelfuse manufacturing, while the 20KPA216A provides an alternative source from MDE Semiconductor Inc. Both are active products with ROHS3 compliance and established inventory availability.

30KPA216AE3/TR13 (Microchip Technology) is a manufacturer-recommended alternative that provides enhanced performance with 86.9A peak pulse current and 30kW peak pulse power, compared to 58A and 20kW in the main part. This part maintains identical reverse standoff voltage and package compatibility. The 30KPA216AE3/TR13 is supplied in Tape & Reel packaging and is suitable for applications requiring higher transient suppression capability. This part is active and ROHS3 compliant.

All substitute parts are through-hole mounted in P600 axial packages, operate across the same temperature range (-55°C ~ 175°C), and are RoHS3 compliant. Selection between direct equivalents and the enhanced alternative depends on application transient energy requirements and packaging format preferences.

Frequently Asked Questions (FAQ)

Q: Can 20KPA216A replace 20KPA216-B directly? A: Yes. The 20KPA216A maintains identical reverse standoff voltage (216V), peak pulse current (58A), and P600 axial package. Both are unidirectional Zener TVS diodes with matching operating temperature ranges. Direct substitution is supported.

Q: What is the difference between 20KPA216A-B and 20KPA216A? A: Both parts are direct electrical equivalents with identical electrical specifications. The primary difference is manufacturer: 20KPA216A-B is manufactured by Littelfuse Inc., while 20KPA216A is manufactured by MDE Semiconductor Inc. Selection depends on supplier availability and manufacturing source preference.

Q: When should 30KPA216AE3/TR13 be used instead of direct equivalents? A: The 30KPA216AE3/TR13 provides higher peak pulse current (86.9A vs. 58A) and peak pulse power (30kW vs. 20kW). Use this part when application transient energy levels exceed the 20kW rating of direct equivalents, while maintaining the same 216V reverse standoff voltage protection threshold.

Q: Are all substitute parts available in the same package? A: All substitute parts use the P600 axial through-hole package. However, 30KPA216AE3/TR13 is supplied in Tape & Reel format, while 20KPA216A and 20KPA216A-B are available in bulk packaging. Verify packaging format compatibility with assembly requirements.

Q: Do all parts meet the same compliance standards? A: Yes. All substitute parts are ROHS3 compliant. The main part 20KPA216-B and all substitutes meet ROHS3 requirements. Verify REACH status with suppliers for specific applications requiring REACH compliance documentation.

Q: What is the clamping voltage difference between 20KPA216-B and substitutes? A: The 20KPA216-B has a maximum clamping voltage of 365.4V, while 20KPA216A and 20KPA216A-B clamp at 348V, and 30KPA216AE3/TR13 clamps at 348.6V. All values remain within acceptable protection ranges for 216V standoff applications. Lower clamping voltages in substitutes provide slightly improved transient suppression performance.