SMAJ22CA-TP Equivalent & Substitute Parts

Part Overview

The SMAJ22CA-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a 22V reverse standoff voltage and provides 35.5V maximum clamping voltage at peak pulse current. The component is actively produced and ROHS3 compliant, with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter range.

Substiute Parts

SMAJ22CA-TP

Micro Commercial CoIn Stock: 5291SMAJ22CA-TP Datasheet

Current PartRFQ

SMAJ22CA

MDDIn Stock: 31205SMAJ22CA Datasheet

DirectRFQ

SMAJ22CA

MDDIn Stock: 31205SMAJ22CA Datasheet

DirectRFQ

SMAJ22CA-13-F

Diodes IncorporatedIn Stock: 4615SMAJ22CA-13-F Datasheet

DirectRFQ

SM4T26CAY

STMicroelectronicsIn Stock: 2396SM4T26CAY Datasheet

SimilarRFQ

TV04A220JB-G

Comchip TechnologyIn Stock: 20452TV04A220JB-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMAJ22CA-TP is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 22V
• Voltage - Breakdown (Min): 24.4V
• Voltage - Clamping (Max) @ Ipp: 35.5V
• Current - Peak Pulse (10/1000µs): within 11.2A specification
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Type: Zener, Bidirectional (1 channel)
• RoHS Status: ROHS3 Compliant

Parts are classified as direct substitutes when all electrical parameters match within specification. Parts with identical standoff and breakdown voltages but different clamping voltages or peak pulse currents are classified as similar substitutes and require application-level verification of transient energy absorption capability.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Electrical & Mechanical Equivalence):

SMAJ22CA (MDD), SMAJ22CA-13-F (Diodes Incorporated), and TV04A220JB-G (Comchip Technology) are direct substitutes for SMAJ22CA-TP. All three maintain identical reverse standoff voltage (22V), breakdown voltage (24.4V), and clamping voltage (35.5V) specifications. Peak pulse current ratings are within 0.15A variance (11.2–11.3A range). All parts are packaged in DO-214AC (SMA) surface-mount format, ROHS3 compliant, and carry active product status.

Operating temperature ranges differ slightly: SMAJ22CA-TP and SMAJ22CA-13-F support -55 to 150°C (or 175°C for SMAJ22CA-TP), while SMAJ22CA (MDD) operates -50 to 150°C. For applications requiring the full -55°C lower temperature limit, SMAJ22CA-13-F or SMAJ22CA-TP are preferred.

Similar Substitute (Voltage Clamping Variance):

SM4T26CAY (STMicroelectronics) shares identical standoff and breakdown voltages but specifies 48.3V maximum clamping voltage versus 35.5V for the main part. Peak pulse current is significantly higher at 48A (8/20µs pulse). This part is suitable only for applications where higher clamping voltage and greater transient energy absorption are acceptable or beneficial. SM4T26CAY carries AEC-Q101 automotive qualification and is part of the TRANSIL™ series.

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can SMAJ22CA (MDD) be used as a direct replacement for SMAJ22CA-TP?

A: Yes. Both parts maintain 22V reverse standoff voltage, 24.4V breakdown voltage, and 35.5V clamping voltage. Peak pulse current differs by 0.1A (11.3A vs. 11.2A), which is within specification tolerance. The primary difference is operating temperature range: SMAJ22CA (MDD) operates -50 to 150°C versus SMAJ22CA-TP at -55 to 175°C. For applications requiring full -55°C operation, verify MDD part temperature capability with the supplier.

Q: What is the difference between SMAJ22CA-13-F and SMAJ22CA-TP?

A: Electrical specifications are equivalent: both specify 22V standoff, 24.4V breakdown, 35.5V clamping, and 11.2A peak pulse current. SMAJ22CA-13-F is manufactured by Diodes Incorporated and operates -55 to 150°C, while SMAJ22CA-TP (Micro Commercial Co) operates -55 to 175°C. Both are packaged in DO-214AC (SMA) and are ROHS3 compliant. Selection depends on supplier availability and required upper temperature limit.

Q: Why does SM4T26CAY have different clamping voltage (48.3V vs. 35.5V)?

A: SM4T26CAY is a similar substitute with higher transient energy absorption capability. While standoff and breakdown voltages remain 22V and 24.4V respectively, the clamping voltage is higher and peak pulse current is significantly greater (48A vs. 11.2A). This part is suitable for applications requiring enhanced overvoltage protection margin or higher transient current handling. Verify circuit design compatibility before substitution.

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

A: Yes. All listed substitutes use DO-214AC (SMA) surface-mount packaging, ensuring mechanical and footprint compatibility on PCBs designed for SMAJ22CA-TP.

Q: Do all substitute parts meet RoHS compliance?

A: Yes. All substitute parts listed are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), meeting standard environmental and manufacturing requirements.

Q: What is the difference between SMAJ22CA (MDD) listed twice in the substitute list?

A: The duplicate entry represents the same part number and manufacturer. Both records contain identical electrical specifications, inventory status, and compliance information. Only one instance is required for component selection.