SLD36-018-B Equivalent & Substitute Parts

Part Overview

The SLD36-018-B is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for transient overvoltage protection in through-hole applications. This component operates with a 36V reverse standoff voltage and delivers 5000W peak pulse power with 87.8A peak pulse current. The part is actively produced, AEC-Q101 qualified for automotive applications, and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range.

Substiute Parts

SLD36-018-B

Littelfuse Inc.In Stock: 1246SLD36-018-B Datasheet

Current PartRFQ

5KP36CA

Diotec SemiconductorIn Stock: 169695KP36CA Datasheet

MFR RecommendedRFQ

SA36CA

Taiwan Semiconductor CorporationIn Stock: 2223SA36CA Datasheet

MFR RecommendedRFQ

15KP36CA-TP

Micro Commercial CoIn Stock: 413415KP36CA-TP Datasheet

MFR RecommendedRFQ

5KP36CA-TP

Micro Commercial CoIn Stock: 17135KP36CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SLD36-018-B is determined by the following criteria:

• Voltage - Reverse Standoff (Typ): 36V
• Voltage - Breakdown (Min): 40V
• Voltage - Clamping (Max) @ Ipp: 58.1V (tolerance range 58.1V to 59.7V acceptable)
• Power - Peak Pulse: 5000W or greater
• Mounting Type: Through Hole
• Type: Zener, Bidirectional
• Bidirectional Channels: 1
• RoHS Status: ROHS3 Compliant
• Operating Temperature: -55°C minimum to 175°C maximum

The substitute parts listed maintain these core electrical specifications while differing in packaging format, manufacturer, and in some cases, peak pulse current ratings. Parts with higher power ratings (15KP36CA-TP at 15000W) provide enhanced margin and remain compatible. Parts with lower peak pulse current (SA36CA at 9A) are suitable for lower-current transient protection scenarios but represent a reduced capability variant.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and active product status. Selection between equivalents depends on application-specific requirements:

5KP36CA (Diotec Semiconductor) and 5KP36CA-TP (Micro Commercial Co) provide direct electrical equivalence to the SLD36-018-B with matched 5000W power ratings and 58.1V clamping voltage. The primary difference is packaging format (P600 versus R-6) and supplier availability. Both are suitable for direct substitution in equivalent power-handling applications.

15KP36CA-TP (Micro Commercial Co) offers 15000W peak pulse power, providing enhanced transient protection margin. This part is applicable where higher energy absorption is required or where design margin improvement is desired, though it represents an upgrade rather than a direct equivalent.

SA36CA (Taiwan Semiconductor Corporation) operates at 500W peak pulse power with 9A peak pulse current, representing a reduced-capability variant. This part is suitable only for applications with lower transient energy requirements and should not be used as a direct replacement in circuits designed for 5000W protection.

Operating temperature range consideration: 5KP36CA (Diotec) specifies -50°C minimum versus -55°C for the main part and other substitutes. This represents a 5°C reduction in low-temperature operating margin.

Frequently Asked Questions (FAQ)

Q: Can 5KP36CA replace SLD36-018-B directly? A: Yes. Both parts share identical voltage specifications (36V standoff, 40V breakdown, 58.1V clamping) and power rating (5000W). The primary difference is packaging format (P600 versus P600) and manufacturer. Electrical performance is equivalent.

Q: What is the difference between P600 and R-6 packages? A: Both are through-hole axial packages for TVS diodes. P600 and R-6 represent different physical form factors from different manufacturers. PCB layout and lead spacing may differ; verify mechanical compatibility with your board design before substitution.

Q: Is SA36CA a suitable replacement? A: SA36CA maintains voltage equivalence (36V standoff, 58.1V clamping) but operates at 500W peak pulse power versus 5000W for the main part. Use SA36CA only in applications with lower transient energy requirements. Do not substitute in circuits designed for 5000W protection.

Q: Can 15KP36CA-TP be used instead of SLD36-018-B? A: Yes. 15KP36CA-TP provides the same voltage protection (36V standoff, 59.7V clamping) with higher power capability (15000W). This represents an upgrade suitable for applications requiring enhanced transient margin. Verify package compatibility (R-6 format) with your PCB design.

Q: Are all substitutes AEC-Q101 qualified? A: The SLD36-018-B carries AEC-Q101 automotive qualification. Substitute parts listed do not explicitly state AEC-Q101 qualification in provided data. Verify automotive qualification requirements with your supplier if AEC-Q101 compliance is mandatory for your application.

Q: What is the operating temperature difference between substitutes? A: SLD36-018-B, SA36CA, 15KP36CA-TP, and 5KP36CA-TP all operate from -55°C to 175°C. 5KP36CA (Diotec) operates from -50°C to 175°C, representing a 5°C reduction in low-temperature margin. Select based on your application's minimum operating temperature requirement.

Q: Do all substitutes have the same RoHS compliance? A: Yes. All listed parts are ROHS3 compliant, meeting current lead-free and hazardous substance restrictions.