SMA5C11-TP Equivalent & Substitute Parts

Part Overview

The SMA5C11-TP is a Zener diode rated at 11 V nominal voltage with 3 W maximum power dissipation in a surface mount DO-214AC (SMA) package. Manufactured by Micro Commercial Co, this component is classified as obsolete product status. Due to its obsolete designation, locating original stock may present supply chain challenges. Substitute parts with active product status and equivalent electrical specifications are available to ensure design continuity and procurement reliability.

Substiute Parts

SMA5C11-TP

Micro Commercial CoIn Stock: 859SMA5C11-TP Datasheet

Current PartRFQ

3SMAJ5926B-TP

Micro Commercial CoIn Stock: 70733SMAJ5926B-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMA5C11-TP is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage rating: 11 V nominal
• Maximum power dissipation: 3 W
• Package type: DO-214AC (SMA) surface mount
• Mounting configuration: Surface mount

Secondary Compatibility Factors:

• Voltage tolerance within acceptable design margins
• Operating temperature range compatibility
• RoHS3 compliance status
• Moisture sensitivity level (MSL 1 - Unlimited)

The substitute part 3SMAJ5926B-TP meets all primary criteria with identical zener voltage (11 V) and power rating (3 W) in the same DO-214AC package. This part carries active product status, ensuring ongoing availability and supply chain stability.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The 3SMAJ5926B-TP is a direct functional substitute for the SMA5C11-TP based on matching zener voltage (11 V), power rating (3 W), and identical package configuration (DO-214AC, SMA). Both components maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard surface mount assembly processes.

Product Status Advantage:

The substitute part carries active product status, providing assured long-term availability and supply chain continuity. The obsolete designation of the SMA5C11-TP creates procurement risk; transitioning to the 3SMAJ5926B-TP eliminates this constraint.

Parameter Variance Considerations:

The substitute exhibits tighter voltage tolerance (±5% versus ±5.45%), lower impedance (5.5 Ohms versus 8 Ohms), and slightly higher forward voltage drop (1.5 V versus 1.2 V at 200 mA). These variations remain within typical design margins for zener diode applications. The operating temperature minimum is -55°C (versus -65°C), which is acceptable for most commercial and industrial applications.

Compliance Status:

Both components satisfy ROHS3 requirements and carry unlimited moisture sensitivity classification, supporting standard manufacturing and storage protocols without special handling.

Frequently Asked Questions (FAQ)

Q: Can the 3SMAJ5926B-TP directly replace the SMA5C11-TP in existing designs?

A: Yes. Both components share identical zener voltage (11 V), power rating (3 W), and DO-214AC package configuration. The substitute is electrically and mechanically compatible for direct board-level substitution.

Q: What is the significance of the product status difference?

A: The SMA5C11-TP is classified as obsolete, indicating discontinued manufacturing and limited stock availability. The 3SMAJ5926B-TP maintains active status, ensuring reliable procurement and ongoing supply chain support.

Q: How do the tolerance specifications affect circuit performance?

A: The SMA5C11-TP specifies ±5.45% tolerance while the substitute offers ±5% tolerance. The tighter tolerance of the substitute provides improved voltage regulation consistency. Both tolerances are acceptable for standard zener diode voltage regulation applications.

Q: Are there packaging differences between these parts?

A: No. Both components use the DO-214AC (SMA) surface mount package. Footprint, lead spacing, and reflow soldering parameters are identical, requiring no PCB layout modifications.

Q: What is the impact of the impedance difference?

A: The substitute exhibits lower impedance (5.5 Ohms versus 8 Ohms). Lower impedance generally improves transient response and voltage regulation performance, representing an enhancement over the original specification.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SMA5C11-TP and 3SMAJ5926B-TP are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. No additional handling or storage procedures are required for the substitute.

Q: What is the operating temperature range consideration?

A: The SMA5C11-TP operates from -65°C to 150°C, while the substitute operates from -55°C to 150°C. For applications requiring operation below -55°C, the original part specification must be retained. For standard commercial and industrial temperature ranges, the substitute is fully compatible.

Q: Are there secondary substitute options available?

A: The 3SMAJ5926B-TP documentation references additional equivalent parts including SZ1SMA5926BT3G, SML4741A-E3/61, SMAZ5926B-E3/61, SML4741-E3/61, and 1SMA5926BT3G. These alternatives maintain the same electrical specifications and package configuration.