SMAJ7.0CA-13 Equivalent & Substitute Parts

Part Overview

The SMAJ7.0CA-13 is a Transient Voltage Suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 7V reverse standoff voltage and 12V maximum clamping voltage, delivering 33.3A peak pulse current in a compact DO-214AC (SMA) package. The SMAJ7.0CA-13 is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

SMAJ7.0CA-13

Diodes IncorporatedIn Stock: 1095SMAJ7.0CA-13 Datasheet

Current PartRFQ

SMAJ7.0CA-13-F

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

DirectRFQ

SMAJ7.0CA

MDDIn Stock: 10183SMAJ7.0CA Datasheet

DirectRFQ

SMAJ7.0CA

MDDIn Stock: 10183SMAJ7.0CA Datasheet

DirectRFQ

P4SMA8.2CA-E3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 916P4SMA8.2CA-E3/61 Datasheet

MFR RecommendedRFQ

SMAJ7.0CA-TP

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMAJ7.0CA-13 is determined by strict equivalence across the following parameters:

• Voltage - Reverse Standoff (Typ): 7V
• Voltage - Breakdown (Min): 7.78V
• Voltage - Clamping (Max) @ Ipp: 12V
• Current - Peak Pulse (10/1000µs): 33.3A
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC, SMA
• Type: Zener, Bidirectional, single channel
• Mounting Type: Surface Mount

Substitute parts meeting these electrical and mechanical criteria are functionally interchangeable. Variations in operating temperature range, RoHS compliance status, and packaging format (Tape & Reel vs. Cut Tape) do not affect electrical substitutability but may impact procurement and assembly workflows.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain electrical equivalence to the SMAJ7.0CA-13 within the specified parameter tolerances. Selection should prioritize active product status and regulatory compliance:

SMAJ7.0CA-13-F (Diodes Incorporated) is the primary direct substitute, offering identical electrical specifications with ROHS3 compliance and active product status. This part maintains manufacturer continuity and is available in high volume (104,179 pcs).

SMAJ7.0CA-TP (Micro Commercial Co) provides equivalent electrical performance with extended operating temperature range (-55°C ~ 175°C) and ROHS3 compliance. This option is suitable for applications requiring broader thermal operating margins.

SMAJ7.0CA (MDD) delivers matching electrical specifications with ROHS3 compliance and active status. Operating temperature range is -50°C ~ 150°C, which is acceptable for most general-purpose applications.

P4SMA8.2CA-E3/61 (Vishay General Semiconductor) exhibits minimal electrical deviation (7.02V standoff, 12.1V clamping, 33.1A peak pulse) within acceptable tolerance bands. This part offers the widest operating temperature range (-65°C ~ 150°C) and is designated as manufacturer-recommended. Cut Tape packaging may require procurement workflow adjustment.

Frequently Asked Questions (FAQ)

Q: Can SMAJ7.0CA-13-F directly replace SMAJ7.0CA-13 without circuit modification?

A: Yes. SMAJ7.0CA-13-F maintains identical electrical specifications (7V standoff, 12V clamping, 33.3A peak pulse) and DO-214AC package geometry. The primary difference is active product status and ROHS3 compliance. No circuit changes are required.

Q: What is the significance of the voltage parameters (standoff, breakdown, clamping)?

A: Reverse standoff voltage (7V) is the maximum voltage the diode blocks without conducting. Breakdown voltage (7.78V minimum) is the threshold at which the diode begins conducting. Clamping voltage (12V maximum) is the voltage across the diode during peak pulse current. All substitute parts maintain these specifications within tolerance.

Q: Does operating temperature range affect substitutability?

A: Operating temperature range does not affect electrical substitutability for the core TVS function. However, applications operating near temperature extremes should select parts with appropriate thermal margins. SMAJ7.0CA-TP (-55°C ~ 175°C) and P4SMA8.2CA-E3/61 (-65°C ~ 150°C) offer extended ranges compared to the original part (-55°C ~ 150°C).

Q: Why is P4SMA8.2CA-E3/61 listed as a substitute if voltage specifications differ slightly?

A: P4SMA8.2CA-E3/61 exhibits minimal deviation: 7.02V standoff (vs. 7V), 7.79V breakdown (vs. 7.78V), and 12.1V clamping (vs. 12V). These variations fall within acceptable engineering tolerance for TVS diode substitution in general-purpose protection circuits. Peak pulse current (33.1A vs. 33.3A) is functionally equivalent.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect circuit performance?

A: Packaging format does not affect electrical performance. Tape & Reel (TR) packaging is standard for automated assembly. Cut Tape (CT) packaging may require manual handling or alternative feeder systems. P4SMA8.2CA-E3/61 is supplied in Cut Tape format.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts (SMAJ7.0CA-13-F, SMAJ7.0CA, P4SMA8.2CA-E3/61, SMAJ7.0CA-TP) are ROHS3 compliant. The original SMAJ7.0CA-13 is RoHS non-compliant and discontinued. Compliance status should be verified against your product's regulatory requirements.