P6SMB160AT3G Equivalent & Substitute Parts

Part Overview

The P6SMB160AT3G is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a reverse standoff voltage of 136V and provides clamping at 219V with a peak pulse current of 2.7A. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing.

Key Parameters

Parameter	Value
Manufacturer Part Number	P6SMB160AT3G
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	136V
Voltage - Breakdown (Min)	152V
Voltage - Clamping (Max) @ Ipp	219V
Current - Peak Pulse (10/1000µs)	2.7A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature	-65°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the P6SMB160AT3G is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 136V ± tolerance
Voltage - Clamping (Max) @ Ipp: 219V ± tolerance
Current - Peak Pulse (10/1000µs): 2.7A minimum
Package / Case: DO-214AA (SMB) form factor
Mounting Type: Surface Mount
Unidirectional Channels: 1

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents: Parts with matching reverse standoff voltage (136V), clamping voltage (219V), and comparable peak pulse current (2.7A–2.8A). These provide pin-for-pin and functional compatibility.

Category B - Near-Equivalent Alternatives: Parts with slightly different voltage ratings (150V–160V standoff, 243V–259V clamping) or higher peak pulse current ratings (4.6A). These offer enhanced protection margins or higher power dissipation but require circuit validation to confirm suitability.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	Product Status	RoHS Status
P6SMB160AT3G	Littelfuse Inc.	136V	219V	2.7A	600W	DO-214AA, SMB	-65°C ~ 150°C	Obsolete	ROHS3 Compliant
P6SMB160A	Eaton - Electronics Division	136V	219V	2.8A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active	RoHS Compliant
P6SMB160A-E3/52	Vishay General Semiconductor - Diodes Division	136V	219V	2.7A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active	ROHS3 Compliant
SMBJP6KE160A-TP	Micro Commercial Co	136V	219V	2.8A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active	Not Specified
TVP06B161A-G	Comchip Technology	136V	219V	2.74A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active	ROHS3 Compliant
1KSMB160A	Littelfuse Inc.	136V	219V	4.6A	1000W	DO-214AA, SMB	-55°C ~ 150°C	Active	ROHS3 Compliant
SMBJ160A-13-F	Diodes Incorporated	160V	259V	2.3A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active	ROHS3 Compliant
SMBJ150A	MDD	150V	243V	2.5A	600W	DO-214AA, SMB	-50°C ~ 150°C	Active	ROHS3 Compliant
SMBJ160A	Meritek	160V	259V	2.32A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents)

P6SMB160A-E3/52 (Vishay) and P6SMB160A (Eaton) are the preferred direct substitutes. Both maintain the 136V reverse standoff and 219V clamping specifications with peak pulse currents within 0.1A of the original. P6SMB160A-E3/52 matches the original operating temperature range (-65°C to 150°C) and ROHS3 compliance status, making it the closest functional equivalent. P6SMB160A offers active product status with established supply availability.

TVP06B161A-G (Comchip Technology) provides electrical equivalence with 2.74A peak pulse current and active product status. SMBJP6KE160A-TP (Micro Commercial Co) matches all critical electrical parameters and operating temperature range but has limited inventory.

Secondary Substitutes (Enhanced Performance)

1KSMB160A (Littelfuse Inc.) offers the same voltage ratings with doubled peak pulse current (4.6A) and power dissipation (1000W). This part is suitable for applications requiring higher transient energy absorption. Product status is active with substantial inventory.

Alternative Voltage Ratings (Circuit Validation Required)

SMBJ160A-13-F (Diodes Incorporated) and SMBJ160A (Meritek) feature higher reverse standoff voltage (160V) and clamping voltage (259V), providing increased protection margins. These parts are suitable only if the circuit design permits higher clamping voltages. SMBJ150A (MDD) offers a lower standoff voltage (150V) and higher clamping voltage (243V), applicable to circuits with different voltage thresholds.

All recommended substitutes are ROHS3 compliant and maintain surface-mount DO-214AA (SMB) packaging compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use P6SMB160A as a direct replacement for P6SMB160AT3G?

A: Yes. P6SMB160A (Eaton) maintains identical reverse standoff voltage (136V) and clamping voltage (219V) with peak pulse current of 2.8A, which is within acceptable tolerance of the original 2.7A specification. The part is active and widely available. The operating temperature range is -55°C to 150°C versus the original -65°C to 150°C; verify this meets your application requirements.

Q: What is the difference between P6SMB160A-E3/52 and P6SMB160A?

A: P6SMB160A-E3/52 (Vishay) matches the original operating temperature range (-65°C to 150°C) and maintains identical peak pulse current (2.7A). P6SMB160A (Eaton) has a narrower temperature range (-55°C to 150°C) but slightly higher peak pulse current (2.8A). Choose P6SMB160A-E3/52 if the full -65°C lower temperature limit is required.

Q: Why would I select 1KSMB160A instead of a direct equivalent?

A: 1KSMB160A provides double the peak pulse current (4.6A) and power dissipation (1000W) while maintaining the same voltage ratings. Select this part if your circuit experiences higher transient energy levels or if you require additional design margin for reliability. The part is manufactured by Littelfuse and maintains active product status.

Q: Can I use SMBJ160A-13-F or SMBJ160A as substitutes?

A: These parts have different voltage ratings (160V standoff, 259V clamping versus 136V standoff, 219V clamping). They are suitable only if your circuit design permits higher clamping voltages. Verify that the protected circuit components can tolerate the higher clamping voltage before substitution.

Q: Are all substitute parts RoHS compliant?

A: All recommended substitutes are ROHS3 compliant except SMBJP6KE160A-TP, which does not specify RoHS status. Verify RoHS compliance requirements for your application before final part selection.

Q: What packaging considerations apply to these substitutes?

A: All substitute parts use DO-214AA (SMB) surface-mount packaging, which is mechanically and electrically compatible with the original P6SMB160AT3G. No PCB layout modifications are required. Verify tape and reel or bulk packaging availability based on your procurement requirements.

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