SMAJ100CA-13 Equivalent & Substitute Parts

Part Overview

The SMAJ100CA-13 is a Transient Voltage Suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 100V reverse standoff voltage with 162V maximum clamping voltage and 2.5A peak pulse current capability in a DO-214AC (SMA) package. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

SMAJ100CA-13

Diodes IncorporatedIn Stock: 1089SMAJ100CA-13 Datasheet

Current PartRFQ

SMAJ100CA-13-F

Diodes IncorporatedIn Stock: 435184SMAJ100CA-13-F Datasheet

DirectRFQ

SMAJ100CA

MDDIn Stock: 35361SMAJ100CA Datasheet

MFR RecommendedRFQ

SMAJ100CA

MDDIn Stock: 35361SMAJ100CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMAJ100CA-13 is determined by strict electrical and mechanical parameter matching across the following criteria:

Critical Matching Parameters:

• Reverse standoff voltage: 100V (Typ)
• Breakdown voltage minimum: 111V
• Clamping voltage maximum: 162V @ Ipp
• Peak pulse current: 2.5A (10/1000µs)
• Peak pulse power: 400W
• Package type: DO-214AC (SMA)
• Mounting configuration: Surface Mount
• Thermal operating range: -55°C to 150°C minimum

Identified Substitutes:

1. SMAJ100CA-13-F (Diodes Incorporated) — Direct manufacturer variant with identical electrical specifications and SMA packaging. Differs only in packaging format (Tape & Reel) and product status (Active vs. Discontinued).

2. SMAJ100CA (MDD) — Functionally equivalent alternative from MDD manufacturer. Maintains all critical electrical parameters and SMA package compatibility. Operating temperature range is -50°C to 150°C, which covers the standard industrial range with a 5°C reduction at the lower bound.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SMAJ100CA-13-F (Diodes Incorporated)

This part is the preferred direct substitute. It maintains identical electrical specifications and thermal operating range (-55°C to 150°C) as the original SMAJ100CA-13. The only functional difference is packaging format (Tape & Reel vs. bulk). Product status is Active with significantly higher inventory availability (435,100 units), ensuring supply chain continuity. RoHS3 compliance provides regulatory advantage for new designs and manufacturing environments with environmental restrictions.

Secondary Substitute: SMAJ100CA (MDD)

This alternative meets all critical electrical parameters and maintains SMA package compatibility. The operating temperature range is -50°C to 150°C, which is suitable for applications not requiring the extended -55°C lower temperature specification. Both RoHS3 compliance and Active product status support long-term availability. Inventory levels (35,300 units) are adequate for production requirements.

Compliance Considerations:

Both substitute parts are ROHS3 compliant, whereas the original SMAJ100CA-13 is non-compliant. This compliance improvement is beneficial for new production runs and markets with environmental regulations. For legacy systems or applications with specific non-compliance requirements, the original part remains available in limited stock (981 units).

Frequently Asked Questions (FAQ)

Q: Can SMAJ100CA-13-F be used as a direct replacement for SMAJ100CA-13?

A: Yes. SMAJ100CA-13-F is electrically and mechanically identical to SMAJ100CA-13. The only difference is packaging format (Tape & Reel). Both are manufactured by Diodes Incorporated with identical electrical specifications, thermal range, and SMA package configuration.

Q: What is the difference between SMAJ100CA-13 and SMAJ100CA (MDD)?

A: Both parts share identical electrical specifications: 100V reverse standoff, 111V minimum breakdown, 162V clamping voltage, and 2.5A peak pulse current. The primary differences are manufacturer (Diodes Inc. vs. MDD) and operating temperature range (SMAJ100CA-13 operates -55°C to 150°C; SMAJ100CA operates -50°C to 150°C). For applications requiring operation below -50°C, the original part is required.

Q: Is the SMA package compatible across all three parts?

A: Yes. All three parts use the DO-214AC (SMA) surface-mount package with identical mechanical dimensions and PCB footprint. No layout or assembly modifications are required when substituting between these parts.

Q: Why should I choose SMAJ100CA-13-F over SMAJ100CA?

A: SMAJ100CA-13-F is preferred when the extended lower temperature range (-55°C) is required or when maintaining the original manufacturer (Diodes Incorporated) is a design requirement. It also offers superior inventory availability. Choose SMAJ100CA (MDD) only if the -50°C to 150°C range is acceptable and cost optimization is prioritized.

Q: Are there RoHS compliance implications when substituting?

A: Yes. The original SMAJ100CA-13 is RoHS non-compliant, while both SMAJ100CA-13-F and SMAJ100CA are ROHS3 compliant. For new designs or manufacturing environments with environmental regulations, the compliant alternatives are required. Existing legacy systems may continue using the original part if already qualified.

Q: What inventory considerations should guide my selection?

A: SMAJ100CA-13-F offers the highest availability (435,100 units), ensuring reliable supply for production volumes. SMAJ100CA (MDD) provides adequate inventory (35,300 units) for most applications. The original SMAJ100CA-13 has limited stock (981 units) and is discontinued, making it unsuitable for new production planning.