30KP33CA-TP Equivalent & Substitute Parts

Part Overview

The 30KP33CA-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection applications. This through-hole axial component operates with a 33V reverse standoff voltage and delivers 30kW peak pulse power capability. The part is currently active in production and RoHS3 compliant.

Substitute parts are identified when equivalent electrical performance can be maintained across critical parameters including reverse standoff voltage, breakdown voltage, clamping voltage, and through-hole mounting compatibility. Alternative sources may be required due to inventory availability, packaging preferences, or specific application requirements.

Substiute Parts

30KP33CA-TP

Micro Commercial CoIn Stock: 84830KP33CA-TP Datasheet

Current PartRFQ

30KPA33CA

MDE Semiconductor IncIn Stock: 232430KPA33CA Datasheet

DirectRFQ

15KPA33CA

Good-Ark SemiconductorIn Stock: 227315KPA33CA Datasheet

SimilarRFQ

5KP33CA

HY Electronic (Cayman) LimitedIn Stock: 118415KP33CA Datasheet

SimilarRFQ

BZW50-33B

STMicroelectronicsIn Stock: 10466BZW50-33B Datasheet

SimilarRFQ

BZW50-33BRL

STMicroelectronicsIn Stock: 2152BZW50-33BRL Datasheet

SimilarRFQ

SLD33-018

Littelfuse Inc.In Stock: 4372SLD33-018 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Voltage - Reverse Standoff: Must be 33V
• Voltage - Breakdown (Min): Must be within 36.6V to 36.9V range
• Mounting Type: Must be Through Hole
• Bidirectional Channels: Must be 1
• Type: Must be Zener
• RoHS Status: Must be ROHS3 Compliant
• Product Status: Must be Active

Substitute parts are grouped into two categories:

Direct Equivalent (30KPA33CA): Maintains identical electrical specifications including 30kW peak pulse power and 58.5V clamping voltage. Package variant (P600 vs R-6) represents the primary difference.

Functional Equivalents (15KPA33CA, 5KP33CA, BZW50-33B, BZW50-33BRL, SLD33-018): Maintain core voltage parameters (33V standoff, 36.6V–36.9V breakdown) and through-hole mounting but differ in peak pulse power ratings (5kW–15kW) and clamping voltage specifications (53.3V–76V). These parts are suitable for applications where the 30kW power rating is not required.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (30kW Power Requirement): Select 30KPA33CA when 30kW peak pulse power is required. This part maintains identical electrical specifications to the 30KP33CA-TP. The primary consideration is package compatibility: 30KPA33CA uses P600 axial package versus R-6 for the original part. Both are through-hole mounted and suitable for PCB assembly.

For Reduced Power Applications (5kW–15kW): When application requirements permit lower peak pulse power ratings, 15KPA33CA, 5KP33CA, BZW50-33B, BZW50-33BRL, and SLD33-018 are functionally equivalent. All maintain the 33V reverse standoff voltage and meet RoHS3 compliance. Selection among these options depends on package preference (R-6 or P600), clamping voltage tolerance, and operating temperature range requirements.

For Automotive Applications: SLD33-018 carries AEC-Q101 qualification and is suitable for automotive-grade applications requiring enhanced reliability documentation.

For Extended Temperature Range: 30KP33CA-TP, 30KPA33CA, and SLD33-018 support -55°C to 175°C operating temperature. 15KPA33CA and 5KP33CA are limited to -55°C to 150°C.

All substitute parts are active products with current manufacturing status and RoHS3 compliance, ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can 30KPA33CA directly replace 30KP33CA-TP? A: Yes, electrically. Both parts maintain 33V reverse standoff, 36.9V breakdown voltage, and 30kW peak pulse power. The package differs (P600 vs R-6 axial), requiring PCB layout verification for through-hole mounting compatibility.

Q: What is the difference between R-6 and P600 packages? A: Both are through-hole axial packages. R-6 is a smaller form factor; P600 is larger. Package selection depends on PCB hole spacing and mechanical constraints. Electrical performance is identical.

Q: Can I use a 5kW-rated part in place of the 30kW 30KP33CA-TP? A: Only if your application's actual transient energy does not exceed 5kW. The 30KP33CA-TP is specified for 30kW; using a lower-rated part in a 30kW environment will cause failure. Verify actual system transient energy requirements before substitution.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 Compliant status, meeting current environmental and regulatory requirements.

Q: What is the significance of clamping voltage differences (53.3V–76V)? A: Clamping voltage determines the maximum voltage the TVS diode allows across the protected circuit during a transient event. Lower clamping voltage (53.3V–58.5V) provides tighter protection; higher clamping voltage (76V) allows greater voltage swing. Select based on downstream component voltage ratings and protection requirements.

Q: Does operating temperature range affect substitution? A: Yes, if your application operates at temperatures above 150°C. 30KP33CA-TP, 30KPA33CA, and SLD33-018 support -55°C to 175°C; 15KPA33CA and 5KP33CA are limited to -55°C to 150°C. Verify your thermal environment before selecting a substitute.

Q: Is SLD33-018 suitable for automotive applications? A: Yes. SLD33-018 carries AEC-Q101 qualification, indicating automotive-grade reliability and testing. Use this part when automotive compliance documentation is required.