5KP30A-G Transient Voltage Suppressor Diode - Equivalent & Substitute Parts

Part Overview

The 5KP30A-G is an active-status unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Comchip Technology. This through-hole axial component operates across a temperature range of -55°C to 150°C and is designed for general-purpose transient voltage suppression applications. The part is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified based on matching electrical parameters: 30V reverse standoff voltage, 33.3V minimum breakdown voltage, 48.4V maximum clamping voltage at peak pulse current, and 5000W peak pulse power rating.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	30	V
Voltage - Breakdown (Min)	33.3	V
Voltage - Clamping (Max) @ Ipp	48.4	V
Current - Peak Pulse (10/1000µs)	103.31	A
Power - Peak Pulse	5000	W
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole	-
Package / Case	R-6, Axial	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the 5KP30A-G are classified based on electrical parameter equivalence and mechanical compatibility. The primary substitution criteria are:

Reverse standoff voltage: 30V (required match)
Breakdown voltage minimum: 33.3V to 34.61V (allowable range)
Clamping voltage maximum: 48.4V to 55.2V (allowable range for general-purpose applications)
Peak pulse power: 5000W minimum (5kW, 15kW, or 30kW ratings acceptable)
Unidirectional Zener type with through-hole axial mounting
ROHS3 compliance and MSL 1 rating

Substitutes are grouped into three categories: direct electrical equivalents (5000W power rating), upgraded power-rated alternatives (15kW and 30kW), and lower-power variants (3kW). Package variations (R-6 and P600 axial formats) are interchangeable for through-hole applications.

Parameter Comparison

Part Number	Manufacturer	Vwm (V)	Vbr Min (V)	Vc Max (V)	Ipp (A)	Power (W)	Temp Range (°C)	Package	RoHS
5KP30A-G	Comchip Technology	30	33.3	48.4	103.31	5000	-55 to 150	R-6	ROHS3
5KP30A-B	Littelfuse Inc.	30	33.3	48.4	105.4	5000	-55 to 175	P600	ROHS3
5KP30A	Diotec Semiconductor	30	33.3	48.4	103	5000	-50 to 175	P600	ROHS3
5KP30A-E3/54	Vishay General Semiconductor	30	33.3	48.4	103	5000	-55 to 175	P600	ROHS3
5KP30A-TP	Micro Commercial Co	30	33.3	48.4	-	5000	-55 to 175	R-6	ROHS3
5KP30AHE3/54	Vishay General Semiconductor	30	33.3	48.4	103	5000	-55 to 175	P600	ROHS3
3KP30A-TP	Micro Commercial Co	30	33.3	48.4	-	3000	-55 to 175	R-6	ROHS3
15KPA30A	Good-Ark Semiconductor	30	34.61	50.7	297.8	15000	-55 to 150	P600	ROHS3
30KPA30A	MDE Semiconductor Inc	30	34.6	55.2	548.9	30000	-55 to 175	P600	ROHS3

Engineering Selection Recommendations

Direct electrical equivalents (5KP30A-B, 5KP30A, 5KP30A-E3/54, 5KP30A-TP, 5KP30AHE3/54) maintain identical voltage parameters and 5000W power rating. These parts are suitable for one-to-one replacement in existing designs. The 5KP30AHE3/54 variant includes AEC-Q101 automotive qualification and extended temperature range (-55°C to 175°C), making it appropriate for automotive-grade applications requiring enhanced reliability.

The 3KP30A-TP operates at reduced power (3000W) and is suitable only for applications with lower transient energy requirements. The 15KPA30A and 30KPA30A provide elevated power dissipation (15kW and 30kW respectively) for high-energy transient suppression scenarios. These upgraded alternatives maintain the 30V standoff voltage but exhibit higher clamping voltages (50.7V and 55.2V) and peak pulse currents, requiring circuit validation before substitution.

All substitute parts maintain ROHS3 compliance and MSL 1 rating. Package format selection (R-6 versus P600 axial) depends on PCB layout and footprint requirements; both formats are through-hole compatible.

Frequently Asked Questions (FAQ)

Q: Can 5KP30A-B replace 5KP30A-G directly? A: Yes. Both parts share identical voltage parameters (30V standoff, 33.3V breakdown, 48.4V clamping) and 5000W power rating. The primary difference is package format (P600 versus R-6) and extended temperature range on the 5KP30A-B (-55°C to 175°C versus -55°C to 150°C). Verify PCB footprint compatibility before substitution.

Q: What is the difference between 5KP30A and 15KPA30A? A: The 15KPA30A provides three times the peak pulse power (15kW versus 5kW) and higher peak pulse current (297.8A versus 103A). The clamping voltage is also elevated to 50.7V. Use 15KPA30A only when circuit analysis confirms the application requires higher transient energy suppression capacity.

Q: Is 3KP30A-TP suitable as a substitute? A: The 3KP30A-TP maintains voltage equivalence but operates at reduced power (3000W). It is suitable only for applications with lower transient energy requirements. Do not use as a substitute in designs requiring 5000W dissipation capacity.

Q: What is the significance of the AEC-Q101 qualification on 5KP30AHE3/54? A: AEC-Q101 qualification indicates automotive-grade reliability testing and is required for automotive applications. The 5KP30AHE3/54 is the appropriate selection for automotive designs; standard industrial-grade equivalents lack this certification.

Q: Are R-6 and P600 packages interchangeable? A: Both are through-hole axial packages and are electrically equivalent. Package selection depends on PCB footprint design. Verify lead spacing and hole diameter compatibility with your specific PCB layout before substitution.

Q: Can 30KPA30A replace 5KP30A-G? A: The 30KPA30A maintains 30V standoff voltage but exhibits significantly higher clamping voltage (55.2V versus 48.4V) and peak pulse current (548.9A versus 103.31A). Substitution requires circuit analysis to confirm the higher clamping voltage does not exceed downstream component voltage ratings.

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