Equivalent & Substitute Parts for FDZT40RB7.5 Zener Diode

Part Overview

The FDZT40RB7.5 is a Rohm Semiconductor Zener Diode, characterized by a nominal Zener voltage of 7.5 V, maximum power dissipation of 100 mW, and a compact SMD0402 (01005/0402 metric) package. It offers a reverse leakage current of 500 nA @ 4 V and has an operating junction temperature of 150°C. The device is classified as obsolete, necessitating the evaluation of alternatives for ongoing design support, manufacturing continuity, and component replacement.

Key Parameters

Parameter	Value
Manufacturer Part Number	FDZT40RB7.5
Category	Diodes, Zener
Voltage - Zener (Nom) (Vz)	7.5 V
Tolerance	±5%
Power - Max	100 mW
Current - Reverse Leakage @ Vr	500 nA @ 4 V
Operating Temperature	150°C (TJ)
Mounting Type	Surface Mount
Package / Case	01005 (0402 Metric)
Supplier Device Package	SMD0402
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8541.10.0050
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute part selection for Zener diodes is determined strictly by the following parameters, as supplied in the input:

Nominal Zener Voltage (Vz)
Tolerance
Maximum Power Dissipation
Reverse Leakage Current at Specified Voltage
Operating Temperature
Mounting Type
Package/Case Size
RoHS and REACH Compliance
Moisture Sensitivity Level (MSL)
ECCN and HTSUS Codes

All substitutes have been identified through exact matching or equivalence across these characteristics. No extrapolation outside of provided values has been utilized.

Parameter Comparison

Parameter	FDZT40RB7.5 (Rohm Semiconductor)	GDZ7V5LP3-7 (Diodes Incorporated)
Voltage - Zener (Nom) (Vz)	7.5 V	7.5 V
Tolerance	±5%	±5.23%
Power - Max	100 mW	250 mW
Current - Reverse Leakage @ Vr	500 nA @ 4 V	500 nA @ 4 V
Operating Temperature	150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount	Surface Mount
Package / Case	01005 (0402 Metric)	0201 (0603 Metric)
Supplier Device Package	SMD0402	X3-DFN0603-2
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8541.10.0050	8541.10.0050
Product Status	Obsolete	Active

Engineering Selection Recommendations

FDZT40RB7.5 is classified as obsolete. GDZ7V5LP3-7 is available as an active Zener diode option that matches the core electrical characteristics including nominal Zener voltage, reverse leakage current, and compliance documentation (RoHS3, REACH, ECCN, HTSUS, MSL). Selection must consider the difference in package size and maximum power dissipation as per supplied data. Both parts conform to identical compliance and regulatory standards as provided.

Frequently Asked Questions (FAQ)

Q1: What key electrical parameters determine substitution for FDZT40RB7.5?
A1: The matching nominal Zener voltage (Vz), tolerance, maximum power dissipation, and reverse leakage current at specified voltage are essential for substitution.

Q2: Is package compatibility assured between FDZT40RB7.5 and GDZ7V5LP3-7?
A2: Both are surface-mount diodes, but FDZT40RB7.5 is in SMD0402 (01005/0402 metric), and GDZ7V5LP3-7 is in X3-DFN0603-2 (0201/0603 metric). Review PCB footprint and mechanical accommodation as determined by these supplied package codes.

Q3: Are environmental and regulatory standards equivalent between these parts?
A3: Both FDZT40RB7.5 and GDZ7V5LP3-7 are specified as ROHS3 compliant, REACH unaffected, and carry ECCN EAR99 and HTSUS 8541.10.0050.

Q4: How does product status affect substitute part selection?
A4: FDZT40RB7.5 is obsolete; GDZ7V5LP3-7 is active, supporting ongoing procurement and design continuity as per provided data.

Q5: Do operating temperature ranges compare directly?
A5: FDZT40RB7.5 supports up to 150°C (TJ); GDZ7V5LP3-7 supports -55°C to 150°C (TJ), based strictly on input specification. Both are listed with identical maximum junction temperature.

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