SMAJ8.0C-E3/61 Equivalent & Substitute Parts

Part Overview

The SMAJ8.0C-E3/61 is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for general-purpose overvoltage protection in surface-mount applications. This part operates with an 8V reverse standoff voltage and provides 15V maximum clamping voltage at peak pulse current. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and component procurement.

Substiute Parts

SMAJ8.0C-E3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 937SMAJ8.0C-E3/61 Datasheet

Current PartRFQ

SMAJ8.0CA

MDDIn Stock: 50165SMAJ8.0CA Datasheet

MFR RecommendedRFQ

SMAJ8.0CA

MDDIn Stock: 50165SMAJ8.0CA Datasheet

MFR RecommendedRFQ

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

SMAJ8.0CE3/TR13

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMAJ8.0C-E3/61 is determined by the following critical parameters:

• Reverse Standoff Voltage: 8V (all substitutes maintain this specification)
• Breakdown Voltage (Min): 8.89V (consistent across all alternatives)
• Package Type: DO-214AC / SMA surface mount (mechanical and electrical compatibility requirement)
• Bidirectional Channels: 1 (functional equivalence)
• Type: Zener diode (technology class)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)
• Moisture Sensitivity: MSL 1 (handling and storage compatibility)

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

Category A - 13.6V Clamping Voltage (Lower Clamping Performance)

• SMAJ8.0CA (MDD)
• SMAJ8.0CA-13-F (Diodes Incorporated)
• SMAJ8.0CA-TP (Micro Commercial Co)

Category B - 15V Clamping Voltage (Matched Clamping Performance)

• SMAJ8.0CE3/TR13 (Microchip Technology)

Parameter Comparison

Engineering Selection Recommendations

For Direct Functional Replacement: SMAJ8.0CE3/TR13 (Microchip Technology) is the primary substitute, maintaining identical 15V clamping voltage and 8V reverse standoff specifications. This part is currently active in production and ROHS3 compliant. It provides higher peak pulse current (33.3A vs 26.7A) and increased power dissipation capability (500W vs 400W), offering improved performance margins. Operating temperature range extends to -65°C minimum, exceeding the original specification.

For Cost-Optimized Substitution: SMAJ8.0CA (MDD), SMAJ8.0CA-13-F (Diodes Incorporated), and SMAJ8.0CA-TP (Micro Commercial Co) are functionally equivalent alternatives with reduced clamping voltage (13.6V vs 15V). All three maintain the 8V reverse standoff voltage, identical package configuration, and full RoHS3 compliance. These options are suitable for applications where the lower clamping voltage does not exceed circuit protection requirements. SMAJ8.0CA offers the highest inventory availability (50,100 pcs).

All substitute parts maintain mechanical compatibility through identical DO-214AC / SMA packaging and are suitable for direct PCB footprint replacement without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can SMAJ8.0CA series parts directly replace SMAJ8.0C-E3/61? A: Yes, mechanically and electrically. All SMAJ8.0CA variants share identical reverse standoff voltage (8V), breakdown voltage (8.89V), and DO-214AC/SMA package configuration. The primary difference is clamping voltage: SMAJ8.0CA series clamps at 13.6V versus the original 15V. Circuit protection effectiveness depends on whether 13.6V clamping meets your application requirements.

Q: What is the difference between SMAJ8.0CA and SMAJ8.0CE3/TR13? A: Both maintain 8V reverse standoff voltage and DO-214AC/SMA packaging. SMAJ8.0CE3/TR13 matches the original 15V clamping voltage and provides higher peak pulse current (33.3A vs 29.4A) and power dissipation (500W vs 400W). SMAJ8.0CA clamps at 13.6V with lower current and power ratings. Selection depends on whether your circuit requires 15V or 13.6V clamping performance.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts—SMAJ8.0CA, SMAJ8.0CA-13-F, SMAJ8.0CA-TP, and SMAJ8.0CE3/TR13—are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's regulatory status.

Q: Which substitute has the best availability? A: SMAJ8.0CA (MDD) has the highest inventory at 50,100 pcs. SMAJ8.0CE3/TR13 (Microchip) has 962 pcs available. SMAJ8.0CA-TP (Micro Commercial Co) has 1,047 pcs. SMAJ8.0CA-13-F (Diodes Incorporated) has 3,100 pcs.

Q: Can I use SMAJ8.0CA-TP in applications requiring -55°C minimum operating temperature? A: SMAJ8.0CA-TP operates from -55°C to 175°C (TA), meeting the -55°C minimum requirement. However, note that this part specifies ambient temperature (TA) rather than junction temperature (TJ) like other variants. Verify thermal management in your application to ensure junction temperature remains within specification.

Q: What is the base product number for these parts? A: The base product number is SMAJ8.0, which identifies the 8V reverse standoff voltage class. Suffixes (CA, CE3, etc.) and packaging designations (TP, TR13, -13-F) indicate specific manufacturer variants and packaging configurations.