SMAJ8.0C Equivalent & Substitute Parts

Part Overview

The SMAJ8.0C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features an 8V reverse standoff voltage with a 14.29V maximum clamping voltage and 29.4A peak pulse current capability in a DO-214AC (SMA) package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production requirements.

Substiute Parts

SMAJ8.0C

Littelfuse Inc.In Stock: 696SMAJ8.0C Datasheet

Current PartRFQ

SMAJ8.0CA

MDDIn Stock: 50165SMAJ8.0CA Datasheet

DirectRFQ

SMAJ8.0CA

MDDIn Stock: 50165SMAJ8.0CA Datasheet

DirectRFQ

SMAJ8.0CA-13-F

Diodes IncorporatedIn Stock: 3124SMAJ8.0CA-13-F Datasheet

MFR RecommendedRFQ

SMAJ8.0CA-TP

Micro Commercial CoIn Stock: 1106SMAJ8.0CA-TP Datasheet

MFR RecommendedRFQ

SMAJ8.0CAE3/TR13

Microchip TechnologyIn Stock: 770SMAJ8.0CAE3/TR13 Datasheet

MFR RecommendedRFQ

SMAJ8.0CE3/TR13

Microchip TechnologyIn Stock: 1050SMAJ8.0CE3/TR13 Datasheet

MFR RecommendedRFQ

TV04A8V0JB-G

Comchip TechnologyIn Stock: 718TV04A8V0JB-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMAJ8.0C is determined by the following critical parameters:

• Voltage - Reverse Standoff: 8V (all substitutes maintain this specification)
• Package / Case: DO-214AC, SMA (mechanical and electrical compatibility requirement)
• Bidirectional Channels: 1 (functional equivalence)
• Type: Zener (device technology)
• Applications: General Purpose (functional category)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

Substitute parts are grouped into two categories based on clamping voltage performance:

Group A (13.6V Clamping): SMAJ8.0CA (MDD), SMAJ8.0CA-13-F (Diodes Incorporated), SMAJ8.0CA-TP (Micro Commercial Co), and TV04A8V0JB-G (Comchip Technology). These parts maintain the 8V standoff voltage with reduced clamping voltage (13.6V) compared to the original specification.

Group B (Higher Performance): SMAJ8.0CAE3/TR13 (Microchip Technology) with 13.6V clamping and 36.7A peak pulse current, and SMAJ8.0CE3/TR13 (Microchip Technology) with 15V clamping and 33.3A peak pulse current. These parts offer enhanced current handling or voltage clamping characteristics.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and active product status, ensuring long-term availability and regulatory alignment. The selection between substitute options depends on specific circuit requirements:

For direct replacement with minimal circuit impact, SMAJ8.0CA (MDD), SMAJ8.0CA-13-F (Diodes Incorporated), SMAJ8.0CA-TP (Micro Commercial Co), and TV04A8V0JB-G (Comchip Technology) are functionally equivalent, each offering 13.6V clamping voltage and 29.4A peak pulse current in the same DO-214AC package.

For applications requiring enhanced transient suppression capability, SMAJ8.0CAE3/TR13 (Microchip Technology) provides 36.7A peak pulse current and 500W power dissipation within the same 13.6V clamping specification. SMAJ8.0CE3/TR13 (Microchip Technology) offers 15V clamping voltage with 33.3A peak pulse current and 500W power dissipation for circuits tolerating higher clamping voltages.

Temperature range considerations: SMAJ8.0CA-TP supports extended ambient temperature operation to 175°C, while SMAJ8.0CAE3/TR13 and SMAJ8.0CE3/TR13 maintain the original -65°C lower temperature limit.

Frequently Asked Questions (FAQ)

Q: Can SMAJ8.0CA be used as a direct replacement for SMAJ8.0C?

A: Yes. SMAJ8.0CA maintains the 8V reverse standoff voltage, DO-214AC package, and 29.4A peak pulse current specification. The clamping voltage is 13.6V compared to the original 14.29V, which represents a tighter clamping characteristic suitable for most general-purpose overvoltage protection applications.

Q: What is the difference between SMAJ8.0CAE3/TR13 and SMAJ8.0CE3/TR13?

A: Both are Microchip Technology products with 8V standoff voltage and DO-214AC packaging. SMAJ8.0CAE3/TR13 provides 13.6V clamping with 36.7A peak pulse current and 500W power dissipation. SMAJ8.0CE3/TR13 provides 15V clamping with 33.3A peak pulse current and 500W power dissipation. Selection depends on whether lower clamping voltage with higher current handling or higher clamping voltage is required.

Q: Are all substitute parts in the same package?

A: Yes. All substitute parts use the DO-214AC (SMA) surface-mount package, ensuring mechanical and electrical compatibility with the original SMAJ8.0C footprint.

Q: What is the significance of the different manufacturers?

A: All substitute parts are from established semiconductor manufacturers (MDD, Diodes Incorporated, Micro Commercial Co, Comchip Technology, and Microchip Technology) and maintain ROHS3 compliance and active product status. Manufacturer selection may depend on supply chain availability and procurement preferences.

Q: Does the lower clamping voltage of SMAJ8.0CA affect circuit performance?

A: The 13.6V clamping voltage of SMAJ8.0CA is lower than the original 14.29V specification, providing tighter voltage suppression. This is generally beneficial for protecting sensitive components but should be verified against circuit maximum voltage ratings to ensure compatibility.

Q: Can SMAJ8.0CA-TP be used in high-temperature applications?

A: SMAJ8.0CA-TP supports ambient temperature operation to 175°C, compared to the original specification of -65°C to 150°C junction temperature. This extended temperature range makes it suitable for high-temperature environments, subject to circuit design verification.