SMAJ7.0CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMAJ7.0CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 7V reverse standoff voltage and provides 13.3V clamping at peak pulse current, delivering 500W peak pulse power dissipation in a DO-214AC (SMA) package. The part is active in production status and ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from multiple qualified manufacturers offering compatible electrical and mechanical characteristics.

Substiute Parts

SMAJ7.0CE3/TR13

Microchip TechnologyIn Stock: 886SMAJ7.0CE3/TR13 Datasheet

Current PartRFQ

SMAJ7.0CA

MDDIn Stock: 10183SMAJ7.0CA Datasheet

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SMAJ7.0CA

MDDIn Stock: 10183SMAJ7.0CA Datasheet

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SMAJ7.0CA-13-F

Diodes IncorporatedIn Stock: 104190SMAJ7.0CA-13-F Datasheet

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SMAJ7.0CA-TP

Micro Commercial CoIn Stock: 7322SMAJ7.0CA-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMAJ7.0CE3/TR13 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Reverse standoff voltage: 7V (Typ)
• Breakdown voltage minimum: 7.78V
• Package type: DO-214AC (SMA) surface mount
• Zener diode type with single bidirectional channel
• ROHS3 compliance and MSL 1 rating

Allowable Variation Parameters:

• Clamping voltage (Max) @ Ipp: 12V to 13.3V range
• Peak pulse current: 33.3A to 37.8A range
• Peak pulse power: 400W to 500W range
• Operating temperature range: -65°C to -50°C minimum; 150°C to 175°C maximum

All substitute parts listed maintain identical reverse standoff and breakdown voltage specifications, ensuring functional equivalence in circuit protection applications. Variations in clamping voltage, peak pulse current, and power dissipation remain within acceptable tolerance for general-purpose TVS applications.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active production status and ROHS3 compliance, qualifying them for direct substitution in applications where the SMAJ7.0CE3/TR13 is specified.

SMAJ7.0CA (MDD): Suitable for applications tolerating 12V clamping voltage and 33.3A peak pulse current. Operating temperature minimum of -50°C (TJ) is acceptable for most industrial and commercial environments. Inventory availability of 10,100 pieces supports high-volume procurement.

SMAJ7.0CA-13-F (Diodes Incorporated): Provides identical electrical performance to the MDD variant with extended operating temperature range to -55°C (TJ). Highest inventory availability at 104,179 pieces ensures supply continuity. Recommended for applications requiring maximum supply assurance.

SMAJ7.0CA-TP (Micro Commercial Co): Offers extended maximum operating temperature to 175°C (TA), providing thermal margin for high-ambient applications. Peak pulse power rating of 400W and peak pulse current of 33.3A remain within acceptable tolerance. Inventory of 7,260 pieces supports standard procurement cycles.

Selection among substitute parts should prioritize application-specific temperature requirements and supply chain availability. All parts are electrically compatible for general-purpose transient voltage suppression.

Frequently Asked Questions (FAQ)

Q: Can SMAJ7.0CA substitute for SMAJ7.0CE3/TR13 in all applications?

A: SMAJ7.0CA is electrically compatible for applications where 12V clamping voltage and 33.3A peak pulse current are acceptable. The 1.3V reduction in clamping voltage and 4.5A reduction in peak pulse current represent lower performance margins. Verify application requirements before substitution.

Q: What is the significance of the clamping voltage difference between the main part and substitutes?

A: The SMAJ7.0CE3/TR13 clamps at 13.3V maximum, while substitute parts clamp at 12V maximum. This 1.3V difference affects the maximum voltage transient protection level. Applications requiring clamping above 12V should retain the original part specification.

Q: Are all substitute parts available in the same package?

A: Yes. All parts use DO-214AC (SMA) surface-mount packaging, ensuring mechanical and footprint compatibility. No PCB layout modifications are required for substitution.

Q: Do operating temperature ranges affect substitution decisions?

A: Operating temperature ranges vary among substitutes. The SMAJ7.0CE3/TR13 operates to -65°C (TJ), while substitutes range from -50°C to -55°C minimum. For applications below -50°C, the original part is required. For standard industrial applications (-40°C to +85°C ambient), all parts are suitable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification with MSL 1 (unlimited) moisture sensitivity rating, matching the original part's environmental qualification.

Q: What inventory considerations apply to part selection?

A: SMAJ7.0CA-13-F (Diodes Incorporated) offers the highest inventory at 104,179 pieces, followed by SMAJ7.0CA (MDD) at 10,100 pieces and SMAJ7.0CA-TP (Micro Commercial Co) at 7,260 pieces. The original SMAJ7.0CE3/TR13 has 863 pieces in stock. Supply availability should factor into procurement planning for high-volume applications.