5KP33CE3/TR13 Transient Voltage Suppressor (TVS) Equivalent & Substitute Parts

Part Overview

The 5KP33CE3/TR13 is a bidirectional Zener transient voltage suppressor diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole axial component operates across a temperature range of -55°C to 175°C and is ROHS3 compliant with unlimited moisture sensitivity rating. The part is currently in active product status with 990 units in stock.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining through-hole mounting compatibility and general-purpose application suitability.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	33	V
Voltage - Breakdown (Min)	36.7	V
Voltage - Clamping (Max) @ Ipp	59	V
Current - Peak Pulse (10/1000µs)	84.7	A
Power - Peak Pulse	5000	W
Operating Temperature Range	-55 to 175	°C
Mounting Type	Through Hole	—
Package / Case	P600, Axial	—
Type	Zener	—
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the 5KP33CE3/TR13 are grouped based on the following substitution criteria:

Primary Electrical Parameters:

Voltage - Reverse Standoff (Typ): 33V nominal
Voltage - Breakdown (Min): 36.7V minimum
Voltage - Clamping (Max) @ Ipp: 53V to 59V range
Power - Peak Pulse: 5000W to 15000W (higher power ratings acceptable for same voltage class)

Mechanical & Compliance Parameters:

Mounting Type: Through Hole required
Bidirectional Channels: 1 channel
Type: Zener diode
RoHS Status: ROHS3 Compliant
Operating Temperature: -55°C minimum to 150°C minimum

Package Compatibility:

Primary package: P600 Axial (exact match preferred)
Secondary packages: R-6 Axial, DO-201 Axial (functionally compatible for through-hole applications)
DO-15 packages: Lower current rating, suitable only for reduced-stress applications

Substitutes are valid when all primary electrical parameters fall within the specified ranges and mechanical/compliance requirements are met.

Parameter Comparison

Part Number	Manufacturer	Voltage Standoff (V)	Voltage Breakdown Min (V)	Voltage Clamp Max (V)	Peak Pulse Current (A)	Power Peak Pulse (W)	Package	Operating Temp (°C)	RoHS Status
5KP33CE3/TR13	Microchip Technology	33	36.7	59	84.7	5000	P600	-55 to 175	ROHS3
5KP33CA-B	Littelfuse Inc.	33	36.7	53.3	95.7	5000	P600	-55 to 175	ROHS3
5KP33CA-TP	Micro Commercial Co	33	36.7	53.3	—	5000	R-6	-55 to 175	ROHS3
5KP33CA	HY Electronic (Cayman) Limited	33	36.7	53.3	93.9	5000	R-6	-55 to 150	ROHS3
15KP33CA-TP	Micro Commercial Co	33	36.7	54.8	—	15000	R-6	-55 to 175	ROHS3
15KPA33CA	Good-Ark Semiconductor	33	36.9	54.7	276.1	15000	P600	-55 to 150	ROHS3
30KPA33CA	MDE Semiconductor Inc	33	36.9	58.5	517.2	30000	P600	-55 to 175	ROHS3
1.5KE36CA-B	Littelfuse	30.8	34.2	49.9	30.5	1500	DO-201	-55 to 175	ROHS3
1.5KE39CA-B	Littelfuse Inc.	33.3	37.1	53.9	28.2	1500	DO-201	-55 to 175	ROHS3
P6KE36CA	Taiwan Semiconductor Corporation	30.8	34.2	49.9	12	600	DO-15	—	ROHS3
P6KE43CA	Fairchild Semiconductor	36.8	40.9	59.3	10.6	600	DO-15	-50 to 175	—

Engineering Selection Recommendations

Tier 1 - Direct Substitutes (Preferred)

5KP33CA-B (Littelfuse Inc.) and 5KP33CA-TP (Micro Commercial Co) are direct electrical and mechanical equivalents to the 5KP33CE3/TR13. Both maintain the 33V standoff voltage, 5000W peak pulse power rating, and through-hole P600 or R-6 axial packaging. Both are ROHS3 compliant with operating temperature ranges of -55°C to 175°C. These parts are suitable for one-to-one replacement in existing designs.

Tier 2 - Higher Power Alternatives (Same Voltage Class)

15KP33CA-TP (Micro Commercial Co), 15KPA33CA (Good-Ark Semiconductor), and 30KPA33CA (MDE Semiconductor Inc) maintain the 33V standoff voltage specification but provide increased peak pulse power ratings of 15000W and 30000W respectively. These parts are suitable for applications requiring enhanced transient energy absorption while maintaining voltage regulation characteristics. All are ROHS3 compliant. The 15KPA33CA and 30KPA33CA use P600 packaging matching the original part.

Tier 3 - Lower Power Alternatives (Reduced Stress Applications)

1.5KE36CA-B and 1.5KE39CA-B (Littelfuse Inc.) provide 1500W peak pulse power with voltage standoff values of 30.8V and 33.3V respectively. These parts are suitable only for applications with reduced transient stress requirements. Both use DO-201 axial packaging and are ROHS3 compliant with -55°C to 175°C operating ranges.

Tier 4 - Minimal Current Applications

P6KE36CA and P6KE43CA provide 600W peak pulse power in DO-15 axial packaging. These parts are suitable only for low-current signal-level protection applications and are not recommended for general-purpose power protection equivalent to the 5KP33CE3/TR13.

Compliance Verification

All recommended Tier 1 and Tier 2 substitutes maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Operating temperature ranges of -55°C to 175°C are preserved in Tier 1 and most Tier 2 options, ensuring thermal performance equivalence.

Frequently Asked Questions (FAQ)

Q: Can 5KP33CA-B replace 5KP33CE3/TR13 directly?

A: Yes. Both parts share identical voltage specifications (33V standoff, 36.7V breakdown minimum, 53.3V to 59V clamping), 5000W peak pulse power rating, P600 axial through-hole packaging, ROHS3 compliance, and -55°C to 175°C operating temperature range. The primary difference is packaging format (Bulk vs. Tape & Reel) and manufacturer (Littelfuse vs. Microchip Technology).

Q: What is the difference between 5KP33CA-TP and 5KP33CA-B?

A: Both parts are electrically equivalent with 33V standoff voltage and 5000W power rating. The difference is packaging: 5KP33CA-TP uses R-6 axial through-hole packaging in Cut Tape format, while 5KP33CA-B uses P600 axial through-hole packaging in Bulk format. The R-6 package is mechanically compatible with P600 applications in through-hole PCB designs.

Q: Can I use 15KPA33CA instead of 5KP33CE3/TR13?

A: Yes, for applications requiring enhanced transient protection. The 15KPA33CA maintains the 33V standoff voltage and voltage clamping characteristics but provides 15000W peak pulse power (three times higher than the original 5000W). This part uses P600 packaging matching the original. The trade-off is a reduced operating temperature maximum of 150°C versus 175°C.

Q: Are DO-201 packaged parts (1.5KE series) suitable replacements?

A: DO-201 packaged parts are suitable only for reduced-stress applications. The 1.5KE36CA-B and 1.5KE39CA-B provide only 1500W peak pulse power compared to the original 5000W. These parts are through-hole compatible but deliver significantly lower transient energy absorption capability. Use only when application stress levels are confirmed to be within 1500W limits.

Q: Why are DO-15 packaged parts (P6KE series) not recommended?

A: DO-15 packaged parts provide only 600W peak pulse power, representing a 88% reduction from the original 5000W specification. Peak pulse current is limited to 10-12A versus 84.7A in the original part. These parts are suitable only for signal-level protection and are not equivalent for general-purpose power protection applications.

Q: What is the significance of the voltage clamping range (53.3V to 59V)?

A: Voltage clamping at peak pulse current (Ipp) determines the maximum voltage the TVS diode allows across the protected circuit during a transient event. The original 5KP33CE3/TR13 clamps at 59V maximum. Substitute parts with clamping values between 53.3V and 59V provide equivalent or superior protection. Lower clamping voltages (49.9V in 1.5KE series) indicate reduced transient stress capability.

Q: Are all substitute parts ROHS3 compliant?

A: All Tier 1 and Tier 2 recommended substitutes are ROHS3 compliant. The P6KE43CA (Tier 4) does not list RoHS status in provided specifications. Compliance verification is required before selection for regulated applications.

Q: Can package type affect circuit performance?

A: Package type (P600, R-6, DO-201, DO-15) does not affect electrical performance in through-hole applications. All packages are axial lead configurations suitable for PCB mounting. Package selection is determined by PCB layout constraints and lead spacing requirements. P600 and R-6 packages are mechanically interchangeable in standard through-hole designs.

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