SMLJ8.0AE3/TR13 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The SMLJ8.0AE3/TR13 is an 8V unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Microchip Technology in DO-214AB surface mount package. This component provides transient overvoltage protection for general-purpose applications with a peak pulse current rating of 220.6A and clamping voltage of 13.6V. The part is active in production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the TVS diode category.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	8	V
Voltage - Breakdown (Min)	8.89	V
Voltage - Clamping (Max) @ Ipp	13.6	V
Current - Peak Pulse (10/1000µs)	220.6	A
Power - Peak Pulse	300	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Type	Zener	—
Unidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the SMLJ8.0AE3/TR13 are classified based on the following critical electrical and mechanical parameters:

Primary Matching Criteria:

Voltage - Reverse Standoff (Typ): 8V
Voltage - Clamping (Max) @ Ipp: 13.6V
Unidirectional Channels: 1
Type: Zener
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum

Secondary Consideration:

Current - Peak Pulse (10/1000µs): 220.6A nominal, with tolerance for similar ratings (110.3A to 220.6A acceptable for general-purpose applications)
Power - Peak Pulse: 300W to 3000W range acceptable

Parts are grouped into two categories:

Direct Equivalents: Parts matching all primary criteria with identical or superior current and power ratings (SMDJ8.0A, SMLJ8.0A from Bourns).

Similar Substitutes: Parts matching voltage and package specifications with reduced current/power ratings (SMCJ8.0A variants, SMCJ8.0A-13-F, SMCJ8.0A-TP, SMCJ8V0A) suitable for applications with lower transient current requirements.

Partial Compatibility: SMCJ8.5A-13-F exhibits slightly elevated voltage ratings (8.5V standoff, 14.4V clamp) and reduced current capacity, applicable only where voltage tolerance permits.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	RoHS Status
SMLJ8.0AE3/TR13	Microchip Technology	8V	13.6V	220.6A	300W	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
SMDJ8.0A	Alpha & Omega Semiconductor Inc.	8V	13.6V	220.6A	3000W	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
SMLJ8.0A	Bourns Inc.	8V	13.6V	220.6A	3000W	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
SMCJ8.0A	Taiwan Semiconductor Corporation	8V	13.6V	115A	1500W	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
SMCJ8.0A-13-F	Diodes Incorporated	8V	13.6V	110.3A	1500W	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
SMCJ8.0A-TP	Micro Commercial Co	8V	13.6V	110.3A	1500W	-55 to 175°C	DO-214AB, SMC	ROHS3 Compliant
SMCJ8.5A-13-F	Diodes Incorporated	8.5V	14.4V	104.2A	1500W	-55 to 150°C	DO-214AB, SMC	ROHS3 Compliant
SMCJ8V0A	Fairchild Semiconductor	8V	13.6V	110.3A	1500W	Not specified	DO-214AB, SMC	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility):

SMDJ8.0A (Alpha & Omega Semiconductor Inc.) and SMLJ8.0A (Bourns Inc.) are direct functional equivalents with identical voltage specifications and peak pulse current ratings. Both parts maintain ROHS3 compliance and offer superior power dissipation capability (3000W vs. 300W). These parts are recommended for applications requiring full parameter matching and enhanced thermal performance.

Compatible Substitutes (Reduced Current Rating):

SMCJ8.0A (Taiwan Semiconductor Corporation), SMCJ8.0A-13-F (Diodes Incorporated), SMCJ8.0A-TP (Micro Commercial Co), and SMCJ8V0A (Fairchild Semiconductor) maintain identical voltage characteristics (8V standoff, 13.6V clamp) with reduced peak pulse current (104.3A to 115A) and power ratings (1500W). These parts are suitable for applications where transient current levels do not exceed 115A. SMCJ8.0A-TP offers extended operating temperature range to 175°C.

Limited Compatibility (Voltage Deviation):

SMCJ8.5A-13-F exhibits elevated voltage ratings (8.5V standoff, 14.4V clamp) and reduced current capacity (104.2A). This part is applicable only in designs where the higher clamping voltage is acceptable and transient current requirements are below 105A.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and EAR99 export classification. SMLJ8.0A from Bourns is REACH Affected; all other parts are REACH Unaffected. Selection should account for supply chain and regulatory requirements specific to end-use geography.

Frequently Asked Questions (FAQ)

Q: Can SMCJ8.0A replace SMLJ8.0AE3/TR13 in all applications?

A: SMCJ8.0A maintains identical voltage specifications (8V standoff, 13.6V clamp) and package configuration (DO-214AB, SMC). However, peak pulse current is reduced from 220.6A to 115A. Substitution is valid only when application transient current does not exceed 115A. Verify circuit transient specifications before selection.

Q: What is the difference between SMDJ8.0A and SMLJ8.0A?

A: Both parts are direct equivalents with matching voltage and current ratings (8V standoff, 13.6V clamp, 220.6A peak pulse). Primary difference is manufacturer: SMDJ8.0A is from Alpha & Omega Semiconductor Inc., while SMLJ8.0A is from Bourns Inc. Both offer 3000W peak pulse power and ROHS3 compliance. Selection may depend on supply availability and procurement preferences.

Q: Is SMCJ8.5A-13-F compatible with SMLJ8.0AE3/TR13?

A: SMCJ8.5A-13-F is not a direct substitute. It exhibits higher voltage ratings (8.5V standoff vs. 8V, 14.4V clamp vs. 13.6V) and lower current capacity (104.2A vs. 220.6A). Use only in applications where the elevated clamping voltage is acceptable and transient current requirements are below 105A.

Q: Does package type affect substitution?

A: All listed substitute parts use DO-214AB surface mount package (SMC designation). Package compatibility is confirmed across all alternatives. Mounting type (surface mount) and footprint are identical, enabling direct PCB placement without layout modification.

Q: What is the impact of reduced power rating in SMCJ variants?

A: SMCJ8.0A variants are rated at 1500W peak pulse power compared to 300W in the original SMLJ8.0AE3/TR13. The higher power rating in substitutes provides thermal margin and does not create compatibility issues. Lower power rating in the original part indicates it is suitable for lower-energy transient events.

Q: Can SMCJ8.0A-TP be used in high-temperature applications?

A: SMCJ8.0A-TP operates to 175°C junction temperature, exceeding the original part specification of 150°C. This part is suitable for applications requiring extended temperature range. All other substitutes maintain the -55°C to 150°C range matching the original specification.

Q: Are there inventory considerations for part selection?

A: Inventory levels vary significantly: SMCJ8V0A (27,200 pcs), SMLJ8.0A Bourns (12,827 pcs), SMDJ8.0A (12,300 pcs), SMCJ8.0A Taiwan (9,270 pcs), SMCJ8.0A-13-F (4,100 pcs), SMCJ8.0A-TP (4,083 pcs), SMCJ8.5A-13-F (1,023 pcs). Higher inventory availability may influence procurement lead time and cost considerations.

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