Equivalent & Substitute Parts for BZX84B18VLFHT116

Part Overview

BZX84B18VLFHT116 is a Zener diode from Rohm Semiconductor, classified under the Diodes, Zener category. It provides 18 V Zener voltage at a 250 mW power rating, features automotive grade with AEC-Q101 qualification, and is supplied in a SSD3 (SOT-23) surface-mount package. The part is RoHS3 compliant, has a moisture sensitivity level (MSL) of 1, and is actively available in inventory.
Alternative models are essential for supply continuity, multi-sourcing, and manufacturing optimization, especially when packaging, supply chain, or compliance constraints arise.

Key Parameters

Parameter	Value
Voltage - Zener (Nom) (Vz)	18 V
Tolerance	±2.22%
Power - Max	250 mW
Impedance (Max) (Zzt)	45 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 13 V
Operating Temperature	150°C (TJ)
Grade	Automotive
Qualification	AEC-Q101
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
Supplier Device Package	SSD3
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8541.10.0050

Substitute Part Grouping Explanation

Substitute parts for BZX84B18VLFHT116 are determined strictly by matching critical electrical, thermal, mechanical, and compliance parameters:

Voltage - Zener (18 V Nominal)
Tolerance (±2.22%)
Power Rating (250 mW)
Impedance (Max 45 Ohms)
Reverse Leakage Current (100 nA @ 13 V)
Operating Temperature (150°C)
Automotive Grade and AEC-Q101 Qualification
Mounting Type (Surface Mount)
Package / Case (TO-236-3, SC-59, SOT-23-3)
Supplier Device Package (SSD3 or SOT-23)
RoHS Compliance, MSL, and REACH Status
Only parts fully matching these parameters are listed as parametric equivalents.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Zener (Nom) (Vz)	Tolerance	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Operating Temperature	Grade	Qualification	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	MSL	REACH Status	ECCN	HTSUS	Product Status
BZX84B18VLFHT116	Rohm Semiconductor	18 V	±2.22%	250 mW	45 Ohms	100 nA @ 13 V	150°C (TJ)	Automotive	AEC-Q101	Surface Mount	TO-236-3, SC-59, SOT-23-3	SSD3	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8541.10.0050	Active
BZX84B18VLYFHT116	Rohm Semiconductor	18 V	±2.22%	250 mW	45 Ohms	100 nA @ 13 V	150°C (TJ)	Automotive	AEC-Q101	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8541.10.0050	Active
BZX84B18VLYT116	Rohm Semiconductor	18 V	±2.22%	250 mW	45 Ohms	100 nA @ 13 V	150°C (TJ)			Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8541.10.0050	Active

Engineering Selection Recommendations

All substitute parts listed are active, RoHS3 compliant, REACH unaffected, and have an MSL rating of 1 (unlimited). Substitute models BZX84B18VLYFHT116 and BZX84B18VLYT116 carry AEC-Q101 qualification and meet automotive grade conditions for applicable applications. Selection ensures identical electrical parameters, package compatibility, and environmental compliance, supporting seamless substitution within controlled supply chains.

Frequently Asked Questions (FAQ)

Q1: What determines if a Zener diode is a suitable substitute for BZX84B18VLFHT116?
A1: Suitability is based on matching Zener voltage, power rating, tolerance, maximum impedance, reverse leakage current, operating temperature, package type, compliance, and qualification standards.

Q2: Are the substitute parts form-fit-function compatible?
A2: Substitute parts listed have identical surface-mount packages (TO-236-3, SC-59, SOT-23-3), ensuring mechanical and electrical compatibility.

Q3: How does AEC-Q101 qualification affect substitute selection?
A3: AEC-Q101 qualification is required for automotive-grade usage. Substitutes with this qualification meet automotive industry standards.

Q4: Can differences in supplier device package naming affect assembly?
A4: The listed supplier device packages (SSD3, SOT-23) correspond to the same IEC mechanical outline; naming differences do not affect assembly compatibility within the defined case codes.

Q5: Why is environmental compliance (RoHS, REACH) listed in substitution criteria?
A5: Compliance ensures adherence to regulatory requirements in production and market regions, and must match for direct substitution.

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