SLD10-018-B Equivalent & Substitute Parts

Part Overview

The SLD10-018-B is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for transient overvoltage protection in electronic circuits. This through-hole component operates with a 10V reverse standoff voltage and provides 17V maximum clamping voltage at peak pulse current. The part is actively produced and carries AEC-Q101 automotive qualification with ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	10	V
Voltage - Breakdown (Min)	11.8	V
Voltage - Clamping (Max) @ Ipp	17	V
Current - Peak Pulse (10/1000µs)	300	A
Power - Peak Pulse	5000	W
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	P600, Axial	—
Type	Zener	—
Bidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution eligibility for the SLD10-018-B is determined by strict equivalence in the following critical parameters:

Voltage - Reverse Standoff (Typ): 10V
Voltage - Clamping (Max) @ Ipp: 17V
Operating Temperature Range: -55°C to 175°C
Bidirectional Channels: 1
Type: Zener
Through-hole mounting configuration

Substitute parts must maintain these electrical specifications to ensure functional interchangeability. Variations in packaging format (P600 vs. DO-204AC vs. R-6) and peak pulse current ratings are permitted when the core voltage protection parameters remain equivalent. Packaging differences require mechanical compatibility verification in the target application.

Parameter Comparison

Parameter	SLD10-018-B	5KP10CA	SA10CA	5KP10CA-TP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Taiwan Semiconductor Corporation	Micro Commercial Co
Voltage - Reverse Standoff (Typ)	10V	10V	10V	10V
Voltage - Breakdown (Min)	11.8V	11.1V	11.1V	11.1V
Voltage - Clamping (Max) @ Ipp	17V	17V	17V	17V
Current - Peak Pulse (10/1000µs)	300A	300A	30A	—
Power - Peak Pulse	5000W	5000W	500W	5000W
Operating Temperature Range	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C
Package / Case	P600, Axial	P600, Axial	DO-204AC (DO-15), Axial	R-6, Axial
Type	Zener	Zener	Zener	Zener
Bidirectional Channels	1	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

5KP10CA (Littelfuse Inc.) — Full electrical and mechanical equivalence. Identical voltage parameters, peak pulse current, and power dissipation. P600 package matches original specification. Active product status with ROHS3 compliance. Highest inventory availability (15,300 pcs). Recommended as primary substitute.

5KP10CA-TP (Micro Commercial Co) — Electrical equivalence in voltage and power parameters. R-6 package represents a mechanical variant requiring PCB layout verification. Peak pulse current specification not provided in documentation. Active product status with ROHS3 compliance. Suitable when P600 package unavailability necessitates alternative form factor.

SA10CA (Taiwan Semiconductor Corporation) — Voltage parameters equivalent; however, peak pulse current rated at 30A versus 300A for the main part, resulting in 500W power dissipation versus 5000W. DO-204AC (DO-15) package differs mechanically from P600. This substitute is suitable only for applications with reduced transient current requirements. Active product status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can 5KP10CA directly replace SLD10-018-B without circuit modification?

A: Yes. The 5KP10CA maintains identical voltage specifications (10V standoff, 17V clamping), peak pulse current (300A), and power dissipation (5000W). The P600 package is mechanically compatible. No circuit changes are required.

Q: What is the key difference between 5KP10CA-TP and SLD10-018-B?

A: The primary difference is the package format: 5KP10CA-TP uses R-6 instead of P600. Electrical specifications for voltage and power are equivalent. PCB footprint and lead spacing must be verified for mechanical compatibility in the target application.

Q: Is SA10CA a suitable substitute for high-current transient protection?

A: No. SA10CA is rated for 30A peak pulse current and 500W power dissipation, compared to 300A and 5000W for SLD10-018-B. SA10CA is suitable only for applications with lower transient current requirements. Voltage protection levels remain equivalent at 10V standoff and 17V clamping.

Q: Do all substitute parts carry the same compliance certifications?

A: All listed substitutes are ROHS3 compliant and carry active product status. The original SLD10-018-B includes AEC-Q101 automotive qualification. Compliance requirements for the target application should be verified against specific substitute certifications.

Q: What packaging considerations apply when selecting a substitute?

A: SLD10-018-B and 5KP10CA both use P600 axial packages with identical mechanical compatibility. SA10CA uses DO-204AC (DO-15) package, and 5KP10CA-TP uses R-6 package. Physical lead spacing and PCB hole diameter must match the selected substitute to ensure proper installation.

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