SMA5C27-TP Equivalent & Substitute Parts

Part Overview

The SMA5C27-TP is a Zener diode rated at 27 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 equivalent substitute parts with active production status and improved electrical characteristics is necessary for ongoing design support and procurement continuity.

Substiute Parts

SMA5C27-TP

Micro Commercial CoIn Stock: 1280SMA5C27-TP Datasheet

Current PartRFQ

3SMAJ5935B-TP

Micro Commercial CoIn Stock: 52973SMAJ5935B-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMA5C27-TP is based on the following critical parameters that must remain constant or compatible:

• Zener Voltage (Nominal): 27 V — must match the primary voltage regulation requirement
• Maximum Power Dissipation: 3 W — must equal or exceed the thermal design specification
• Package Type: DO-214AC (SMA) — must maintain identical footprint and lead configuration for PCB compatibility
• Mounting Technology: Surface Mount — must support the same assembly process
• Environmental Compliance: ROHS3 Compliant — must meet regulatory requirements

The substitute part 3SMAJ5935B-TP meets all these core criteria while offering improved electrical performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The 3SMAJ5935B-TP is a direct functional substitute for the SMA5C27-TP based on the following engineering criteria:

Electrical Compatibility: Both devices maintain identical 27 V nominal Zener voltage and 3 W maximum power rating, ensuring equivalent voltage regulation performance in circuit applications.

Package and Mechanical Compatibility: Both components use the DO-214AC (SMA) surface mount package with identical footprint and lead configuration, allowing direct PCB layout substitution without redesign.

Regulatory and Compliance Status: Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting identical environmental and handling requirements.

Product Status Advantage: The 3SMAJ5935B-TP carries active product status with 5200 units in stock inventory, compared to the obsolete SMA5C27-TP with limited remaining stock of 1185 units. This ensures long-term procurement availability and supply chain continuity.

Improved Electrical Characteristics: The 3SMAJ5935B-TP offers tighter voltage tolerance (±5% versus ±7.04%) and lower dynamic impedance (23 Ohms versus 30 Ohms), providing superior voltage regulation stability in circuit operation.

Frequently Asked Questions (FAQ)

Q: Can the 3SMAJ5935B-TP be used as a direct replacement for the SMA5C27-TP on existing PCBs?

A: Yes. Both devices use identical DO-214AC (SMA) surface mount packages with matching footprints and lead configurations. No PCB layout modifications are required for substitution.

Q: What are the key differences between these two Zener diodes?

A: The primary differences are product status (obsolete versus active), voltage tolerance (±7.04% versus ±5%), dynamic impedance (30 Ohms versus 23 Ohms), and minimum operating temperature (-65°C versus -55°C). The 3SMAJ5935B-TP offers improved voltage regulation performance with tighter tolerance and lower impedance.

Q: Are both parts compliant with the same regulatory standards?

A: Yes. Both the SMA5C27-TP and 3SMAJ5935B-TP are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting identical environmental and handling requirements.

Q: Does the operating temperature range difference affect substitution?

A: The 3SMAJ5935B-TP operates from -55°C to 150°C, compared to the SMA5C27-TP range of -65°C to 150°C. For applications requiring operation below -55°C, the original part specification must be maintained. For standard industrial and commercial temperature ranges, the substitute part is fully compatible.

Q: What is the packaging format difference between these parts?

A: The SMA5C27-TP is supplied in standard packaging, while the 3SMAJ5935B-TP is supplied in Tape & Reel (TR) format. Both use identical DO-214AC (SMA) component packages suitable for automated assembly processes.

Q: How do the electrical performance characteristics compare?

A: The 3SMAJ5935B-TP provides superior voltage regulation with ±5% tolerance versus ±7.04%, and lower dynamic impedance of 23 Ohms versus 30 Ohms. Both maintain the same 27 V nominal voltage and 3 W power rating. The improved impedance characteristic results in better transient response and voltage stability in circuit applications.