DFLZ11-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The DFLZ11-TP is an 11 V, 1 W surface mount zener diode manufactured by Micro Commercial Co, packaged in SOD-123FL tape and reel format. This component is classified as Active product status and is RoHS3 compliant. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage applications in electronic circuits. Substitute parts may be required due to inventory availability, supply chain constraints, or specific packaging preferences while maintaining equivalent electrical performance within defined tolerance ranges.

Substiute Parts

DFLZ11-TP

Micro Commercial CoIn Stock: 957DFLZ11-TP Datasheet

Current PartRFQ

KDZVTR11B

Rohm SemiconductorIn Stock: 15189KDZVTR11B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DFLZ11-TP is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Zener voltage nominal rating within the tolerance band of the original specification
• Maximum power dissipation rating of 1 W or greater
• Surface mount package compatibility (SOD-123F case)
• Operating temperature range encompassing the application requirements
• RoHS3 compliance and REACH unaffected status for regulatory alignment

Secondary Compatibility Factors:

• Reverse leakage current characteristics
• Forward voltage characteristics
• Impedance specifications
• Moisture sensitivity level

The KDZVTR11B from Rohm Semiconductor qualifies as a substitute based on matching power rating, package type, surface mount configuration, and regulatory compliance. Zener voltage nominal difference and packaging format variation (PMDU vs. SOD-123FL) are noted but do not preclude functional substitution within the defined electrical operating window.

Parameter Comparison

Engineering Selection Recommendations

DFLZ11-TP Selection Criteria:

• Primary choice when 11 V nominal zener voltage with ±5% tolerance is specified
• Preferred for applications requiring lower reverse leakage current (4 µA @ 8.2 V)
• Tape and reel packaging suitable for high-volume automated assembly
• Active product status with established supply chain

KDZVTR11B Selection Criteria:

• Substitute when DFLZ11-TP availability is constrained
• Acceptable for applications tolerating 11.65 V nominal zener voltage
• Higher reverse leakage current (10 µA @ 8 V) requires circuit-level evaluation
• Cut tape and Digi-Reel packaging options provide alternative handling formats
• Active product status with confirmed RoHS3 and REACH compliance

Both parts maintain SOD-123F package compatibility, 1 W power rating, and maximum operating temperature of 150°C. Selection between these parts depends on zener voltage tolerance requirements and reverse leakage specifications for the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can KDZVTR11B directly replace DFLZ11-TP in all applications?

A: Direct replacement is possible in applications where the zener voltage tolerance band of 11.65 V is acceptable. The 0.65 V difference from the 11 V nominal specification must be evaluated against circuit design margins. Reverse leakage current difference (10 µA vs. 4 µA) requires assessment in low-current bias applications.

Q: What is the zener voltage tolerance range for DFLZ11-TP?

A: With ±5% tolerance applied to the 11 V nominal rating, the acceptable range is 10.45 V to 11.55 V. The KDZVTR11B nominal of 11.65 V exceeds this upper tolerance limit.

Q: Are the packaging formats interchangeable?

A: Both parts use SOD-123F case package, ensuring mechanical and thermal compatibility on PCBs. However, DFLZ11-TP is supplied in tape and reel (TR) format while KDZVTR11B is supplied in cut tape (CT) and Digi-Reel format. These packaging differences affect handling and assembly processes but not electrical performance.

Q: What is the moisture sensitivity level for both parts?

A: Both DFLZ11-TP and KDZVTR11B carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard storage and handling procedures apply without special desiccant or baking requirements.

Q: Are both parts RoHS3 compliant?

A: Yes, both DFLZ11-TP and KDZVTR11B are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component use in restricted substance applications.

Q: How do the reverse leakage currents compare?

A: DFLZ11-TP specifies 4 µA reverse leakage at 8.2 V, while KDZVTR11B specifies 10 µA at 8 V. The higher leakage in KDZVTR11B may impact precision voltage reference circuits or high-impedance bias networks.