P6SMB13CAT3 Equivalent & Substitute Parts

Part Overview

The P6SMB13CAT3 is a transient voltage suppressor (TVS) diode manufactured by onsemi, designed for surface mount applications in the DO-214AA (SMB) package. This component features an 11.1V reverse standoff voltage with an 18.2V clamping voltage at peak pulse current, providing transient protection in electronic circuits. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	P6SMB13CAT3
Manufacturer	onsemi
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Package / Case	DO-214AA, SMB
Voltage - Reverse Standoff (Typ)	11.1V
Voltage - Breakdown (Min)	12.4V
Voltage - Clamping (Max) @ Ipp	18.2V
Current - Peak Pulse (10/1000µs)	33A
Power - Peak Pulse	600W
Operating Temperature Range	-65°C ~ 150°C (TJ)
Bidirectional Channels	1
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the P6SMB13CAT3 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

Voltage - Reverse Standoff (Typ): 11.1V ±0.1V tolerance
Voltage - Breakdown (Min): 12.4V
Voltage - Clamping (Max) @ Ipp: 18.2V
Current - Peak Pulse (10/1000µs): 33A minimum
Power - Peak Pulse: 600W minimum

Mechanical Parameters (Must Match):

Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
Bidirectional Channels: 1

Environmental Parameters (Must Match or Exceed):

Operating Temperature Range: -65°C to 150°C minimum
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts meeting these criteria are functionally equivalent and can replace the P6SMB13CAT3 in circuit applications without design modification.

Parameter Comparison

Parameter	P6SMB13CAT3 (Main)	1KSMB13CA	P6SMB13CA	SMBJ11CA	SMBJ11CAE3/TR13	SMBJP6KE13CA-TP	TPSMB13CA
Manufacturer	onsemi	Taiwan Semiconductor Corporation	Eaton - Electronics Division	Fairchild Semiconductor	Microchip Technology	Micro Commercial Co	Littelfuse Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Voltage - Reverse Standoff (Typ)	11.1V	11.1V	11.1V	11V	11V	11.1V	11.1V
Voltage - Breakdown (Min)	12.4V	12.4V	12.4V	12.2V	12.2V	12.4V	12.4V
Voltage - Clamping (Max) @ Ipp	18.2V	18.2V	18.2V	18.2V	18.2V	18.2V	18.2V
Current - Peak Pulse (10/1000µs)	33A	54.9A	34.6A	33A	33A	34.6A	34.6A
Power - Peak Pulse	600W	1000W	600W	600W	600W	600W	600W
Operating Temperature Range	-65°C ~ 150°C	-55°C ~ 175°C	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 175°C	-65°C ~ 175°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	848 Pcs	14100 Pcs	27200 Pcs	68980 Pcs	735 Pcs	3877 Pcs	2983 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain electrical equivalence to the P6SMB13CAT3 across critical voltage and current parameters. Selection should prioritize the following factors:

Active Product Status: All substitute parts are classified as active products, ensuring ongoing availability and manufacturing support compared to the obsolete P6SMB13CAT3.

RoHS Compliance: Substitute parts 1KSMB13CA, P6SMB13CA, SMBJ11CAE3/TR13, SMBJP6KE13CA-TP, and TPSMB13CA are RoHS3 compliant, meeting modern environmental and regulatory requirements. The original P6SMB13CAT3 is RoHS non-compliant.

Temperature Range Compatibility: TPSMB13CA and SMBJP6KE13CA-TP extend the upper operating temperature to 175°C, providing enhanced thermal margin. SMBJ11CAE3/TR13 and TPSMB13CA maintain the lower temperature limit of -65°C, matching the original specification.

Peak Pulse Current: 1KSMB13CA provides 54.9A peak pulse current, exceeding the original 33A specification, offering enhanced transient protection margin. All other substitutes provide 33A to 34.6A, maintaining electrical equivalence.

Inventory Availability: SMBJ11CA offers the highest inventory level (68980 Pcs), followed by P6SMB13CA (27200 Pcs), supporting high-volume production requirements.

Automotive Grade: TPSMB13CA carries automotive grade designation with AEC-Q101 qualification, matching the original part's automotive classification for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for P6SMB13CAT3?

A: All listed substitute parts are electrically and mechanically equivalent to the P6SMB13CAT3 across critical parameters: 11.1V reverse standoff voltage, 18.2V clamping voltage, 33A minimum peak pulse current, and DO-214AA (SMB) package. Direct substitution is supported without circuit modification.

Q: What is the difference between the substitute parts?

A: Substitute parts differ in manufacturer, product status (all active), RoHS compliance status, operating temperature ranges, and peak pulse current ratings. The 1KSMB13CA provides 54.9A peak pulse current versus 33A for the original. TPSMB13CA and SMBJP6KE13CA-TP support extended temperature ranges to 175°C. All maintain the same voltage specifications and package format.

Q: Is the DO-214AA package the same as SMB?

A: Yes. DO-214AA and SMB refer to the same surface mount package format. These designations are interchangeable in component specifications.

Q: Why is the original P6SMB13CAT3 marked as obsolete?

A: The P6SMB13CAT3 is classified as obsolete by onsemi, indicating discontinued manufacturing. Active substitute parts from other manufacturers provide equivalent electrical performance and ongoing supply availability.

Q: Does RoHS compliance matter for my application?

A: RoHS compliance is required for products sold in the European Union and many other markets. If your application or end-market requires RoHS compliance, select from substitute parts with ROHS3 or RoHS Compliant status: P6SMB13CA, 1KSMB13CA, SMBJ11CAE3/TR13, SMBJP6KE13CA-TP, or TPSMB13CA.

Q: Which substitute part should I choose for automotive applications?

A: TPSMB13CA is designated as automotive grade with AEC-Q101 qualification, matching the original P6SMB13CAT3 automotive classification. This part is suitable for automotive circuit protection applications.

Q: Can I use SMBJ11CA as a substitute?

A: SMBJ11CA is electrically equivalent with 11V reverse standoff voltage (versus 11.1V), 12.2V breakdown voltage (versus 12.4V), and 33A peak pulse current. These minor voltage variations remain within acceptable tolerance for TVS diode substitution. SMBJ11CA offers the highest inventory availability at 68980 Pcs.

Q: What is the advantage of 1KSMB13CA over other substitutes?

A: 1KSMB13CA provides 54.9A peak pulse current and 1000W peak pulse power, exceeding the original 33A and 600W specifications. This higher current rating provides enhanced transient protection margin. It also supports extended operating temperature to 175°C and is RoHS3 compliant.

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