SLD26CA-BP Equivalent & Substitute Parts Reference

Part Overview

The SLD26CA-BP is a 26V Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for interface protection applications. This bidirectional Zener-type TVS diode features a 42.1V maximum clamping voltage and 142A peak pulse current capability with 6kW peak pulse power handling. The device is rated for automotive-grade applications and operates across the temperature range of -55°C to 175°C. With 863 pieces in current stock and active product status, the SLD26CA-BP remains available for new designs and production requirements. Equivalent and substitute parts are identified based on matching electrical parameters including reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse current specifications within the 26V protection class.

Substiute Parts

SLD26CA-BP

Micro Commercial CoIn Stock: 942SLD26CA-BP Datasheet

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15KPA26CA

MDE Semiconductor IncIn Stock: 194015KPA26CA Datasheet

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20KPA26CA

MDE Semiconductor IncIn Stock: 166620KPA26CA Datasheet

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5KP26CA

Diotec SemiconductorIn Stock: 42065KP26CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLD26CA-BP are qualified based on the following electrical and mechanical criteria:

Primary Matching Criteria:

• Voltage - Reverse Standoff (Typ): 26V
• Voltage - Breakdown (Min): 28.9V to 29.04V range
• Type: Zener, Bidirectional
• Bidirectional Channels: 1
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C to 175°C minimum

Secondary Compatibility Factors:

• Voltage - Clamping (Max) @ Ipp: 42.1V to 44.7V acceptable range
• Current - Peak Pulse (10/1000µs): 119A to 451.9A (higher current ratings provide enhanced transient protection margin)
• Power - Peak Pulse: 5000W to 20000W (higher power ratings accommodate increased energy dissipation)
• Package / Case: R-6 or P600 axial through-hole packages (both are standard axial configurations)

All substitute parts maintain the core 26V protection class and Zener diode topology. Substitutes with higher peak pulse current and power ratings provide increased transient suppression capability while maintaining electrical compatibility with the original circuit design intent.

Parameter Comparison

Engineering Selection Recommendations

SLD26CA-BP (Original Part): The SLD26CA-BP is classified as an active product with automotive-grade qualification. This part is suitable for applications requiring automotive-level reliability and environmental performance. The R-6 package provides a compact axial through-hole form factor. Current inventory of 863 pieces supports immediate procurement for production requirements.

5KP26CA (Diotec Semiconductor): The 5KP26CA is an active product with ROHS3 compliance. This substitute provides equivalent clamping voltage (42.1V) and closely matched peak pulse current (119A), representing a 16% reduction from the original part. The 5000W peak pulse power is slightly lower than the SLD26CA-BP. The P600 package is a standard axial through-hole configuration compatible with R-6 footprints. Operating temperature minimum is -50°C versus -55°C for the original. Inventory availability is 4100 pieces. This part is suitable for applications where the lower peak pulse current is acceptable.

15KPA26CA (MDE Semiconductor Inc): The 15KPA26CA is an active product with ROHS3 compliance. This substitute provides higher peak pulse current (343.2A, 142% increase) and significantly higher power handling (15000W, 150% increase) compared to the original part. The clamping voltage is slightly elevated at 44V. The P600 package is compatible with standard axial through-hole mounting. Operating temperature range matches the original (-55 to 175°C). Inventory availability is 1903 pieces. This part is suitable for applications requiring enhanced transient suppression capability.

20KPA26CA (MDE Semiconductor Inc): The 20KPA26CA is an active product with ROHS3 compliance and REACH Unaffected status. This substitute provides the highest peak pulse current (451.9A, 218% increase) and maximum power handling (20000W, 233% increase) among all substitutes. The clamping voltage is 44.7V. The P600 package is compatible with standard axial through-hole mounting. Operating temperature range matches the original (-55 to 175°C). Inventory availability is 1629 pieces. This part is suitable for high-energy transient protection applications.

Frequently Asked Questions (FAQ)

Q: Can the 5KP26CA replace the SLD26CA-BP in all applications?

A: The 5KP26CA maintains the same reverse standoff voltage (26V), breakdown voltage (28.9V), and clamping voltage (42.1V) as the SLD26CA-BP. However, the peak pulse current is 119A compared to 142A in the original part, representing a 16% reduction. The 5KP26CA is suitable for applications where this lower current rating is acceptable. The operating temperature minimum is -50°C instead of -55°C. Package compatibility is maintained through standard axial through-hole mounting.

Q: What is the difference between the 15KPA26CA and 20KPA26CA substitutes?

A: Both the 15KPA26CA and 20KPA26CA are manufactured by MDE Semiconductor Inc and maintain the 26V protection class. The primary differences are peak pulse current (343.2A versus 451.9A) and power handling (15000W versus 20000W). The 20KPA26CA provides 32% higher current capacity and 33% higher power dissipation capability. Both parts have identical operating temperature ranges (-55 to 175°C) and package configurations (P600, axial through-hole). Selection between these two depends on the specific transient energy levels in the application circuit.

Q: Are the R-6 and P600 packages mechanically compatible?

A: Both R-6 and P600 are standard axial through-hole package configurations. The R-6 package used in the SLD26CA-BP and the P600 packages used in the substitute parts are both axial lead configurations suitable for through-hole PCB mounting. Physical dimensions may differ slightly, but both are compatible with standard axial component footprints. PCB layout verification is recommended when transitioning between specific package variants.

Q: Which substitute part should be selected for maximum transient protection?

A: The 20KPA26CA provides the highest transient suppression capability with 451.9A peak pulse current and 20000W peak pulse power handling. This part is suitable for applications experiencing high-energy transient events. The 15KPA26CA offers intermediate protection with 343.2A peak pulse current and 15000W power handling. Selection should be based on the specific transient energy levels and circuit protection requirements defined in the application design.

Q: What is the impact of clamping voltage differences among these parts?

A: The clamping voltage specifications are 42.1V for the SLD26CA-BP and 5KP26CA, 44V for the 15KPA26CA, and 44.7V for the 20KPA26CA. These variations remain within acceptable limits for 26V protection class applications. The clamping voltage determines the maximum voltage presented to protected circuitry during a transient event. The slightly higher clamping voltages in the MDE Semiconductor parts (44V and 44.7V) provide marginally increased voltage stress on protected components compared to the original 42.1V specification.

Q: Are all substitute parts compliant with automotive requirements?

A: The SLD26CA-BP is specified as automotive-grade. The substitute parts (5KP26CA, 15KPA26CA, 20KPA26CA) are specified as general-purpose TVS diodes without explicit automotive-grade designation. All parts maintain ROHS3 compliance and operate across the -55 to 175°C temperature range required for automotive applications. Automotive qualification status should be verified with the respective manufacturers if automotive-grade certification is a design requirement.