DFLZ10-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The DFLZ10-TP is a 10 V, 1 W surface mount zener diode manufactured by Micro Commercial Co, packaged in SOD-123FL format with tape and reel packaging. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when design requirements permit tolerance of specified parameter variations, component availability changes, or when alternative qualified sources are required for procurement continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	10	V
Tolerance	±6%	%
Power - Maximum	1	W
Impedance (Maximum)	4	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 7.5 V
Voltage - Forward (Maximum) @ If	1.2	V @ 200 mA
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount
Package / Case	SOD-123F
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the DFLZ10-TP is permissible when the alternative component meets the following criteria:

Critical Parameters (Must Match):

Zener voltage nominal: 10 V
Zener voltage tolerance: ±6%
Mounting type: Surface Mount
Package compatibility: SOD-123F or SOD-123FL
RoHS3 compliance status

Allowable Parameter Variations:

Power dissipation: Substitute must equal or exceed 1 W maximum rating
Impedance (Zzt): Substitute impedance must not exceed 4 Ohms maximum
Reverse leakage current: Substitute specification must not exceed 5 µA @ 7.5 V
Forward voltage: Substitute forward voltage must not exceed 1.2 V @ 200 mA
Operating temperature range: Substitute range must encompass or exceed -55°C to 150°C
Moisture sensitivity: MSL 1 (Unlimited) classification required

The BZT52HC10WF-7 qualifies as a substitute part based on matching zener voltage, tolerance, mounting type, package format, and RoHS3 compliance. Variations in power rating, impedance, leakage current, and forward voltage fall within acceptable substitution parameters for this product category.

Parameter Comparison

Parameter	DFLZ10-TP (Main Part)	BZT52HC10WF-7 (Substitute)	Compatibility
Manufacturer	Micro Commercial Co	Diodes Incorporated	Different source
Voltage - Zener (Nom)	10 V	10 V	Match
Tolerance	±6%	±6%	Match
Power - Max	1 W	375 mW	Substitute lower
Impedance (Max)	4 Ohms	10 Ohms	Substitute higher
Current - Reverse Leakage @ Vr	5 µA @ 7.5 V	200 nA @ 7 V	Substitute lower
Voltage - Forward (Max) @ If	1.2 V @ 200 mA	900 mV @ 10 mA	Substitute lower
Operating Temperature	-55°C ~ 150°C	-65°C ~ 150°C	Substitute wider range
Mounting Type	Surface Mount	Surface Mount	Match
Package / Case	SOD-123F	SOD-123F	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Match
Product Status	Active	Active	Match

Engineering Selection Recommendations

DFLZ10-TP (Primary Selection): The DFLZ10-TP remains the primary component choice when the specified 1 W power dissipation rating is required and the 4 Ohm maximum impedance specification is critical to circuit performance. This part is Active status with RoHS3 compliance and unlimited moisture sensitivity classification.

BZT52HC10WF-7 (Substitute Selection): The BZT52HC10WF-7 qualifies as a substitute when circuit design permits operation at 375 mW maximum power dissipation and when the higher 10 Ohm impedance specification does not degrade circuit performance. This part is Active status with RoHS3 compliance, unlimited moisture sensitivity classification, and carries AEC-Q101 automotive qualification. The extended operating temperature range (-65°C to 150°C) provides additional thermal margin compared to the primary part.

Selection between these parts is determined by power dissipation requirements and impedance tolerance specifications of the target application circuit.

Frequently Asked Questions (FAQ)

Q: Can the BZT52HC10WF-7 replace the DFLZ10-TP in all applications?

A: The BZT52HC10WF-7 is a valid substitute only when the circuit design accommodates the lower 375 mW power rating and the higher 10 Ohm impedance specification. Applications requiring the full 1 W power dissipation or the lower 4 Ohm impedance must use the DFLZ10-TP.

Q: Are the SOD-123F and SOD-123FL packages mechanically compatible?

A: Both packages are surface mount formats with compatible footprints for PCB assembly. The SOD-123FL designation indicates tape and reel packaging format, while SOD-123F indicates the physical package case style. Both parts are suitable for the same PCB layout.

Q: What is the significance of the ±6% tolerance specification?

A: The ±6% tolerance indicates the allowable deviation of the zener voltage from the nominal 10 V specification. Both the DFLZ10-TP and BZT52HC10WF-7 share this tolerance specification, ensuring equivalent voltage regulation performance within the specified range.

Q: Does the BZT52HC10WF-7 automotive qualification affect its use in non-automotive applications?

A: AEC-Q101 qualification indicates the part meets automotive industry reliability standards. This qualification does not restrict use in non-automotive applications; it indicates the part meets or exceeds standard reliability requirements.

Q: How do the reverse leakage current specifications compare?

A: The DFLZ10-TP specifies 5 µA @ 7.5 V, while the BZT52HC10WF-7 specifies 200 nA @ 7 V. The substitute part exhibits lower reverse leakage current, which is advantageous for applications sensitive to leakage performance.

Q: What is the impact of the different forward voltage specifications?

A: The DFLZ10-TP specifies 1.2 V @ 200 mA, while the BZT52HC10WF-7 specifies 900 mV @ 10 mA. These measurements are taken at different current levels, making direct comparison dependent on the specific forward bias operating point of the application circuit.

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