BZX884S-C18YL Equivalent & Substitute Parts

Part Overview

The BZX884S-C18YL is a Zener diode manufactured by Nexperia USA Inc., rated at 17.95 V nominal with 365 mW maximum power dissipation in a surface mount SOD-882 package. This component is classified as obsolete, indicating discontinuation from active production. Identification of equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production builds and field replacements.

Substiute Parts

BZX884S-C18YL

Nexperia USA Inc.In Stock: 923BZX884S-C18YL Datasheet

Current PartRFQ

BZX884S-C18-QYL

Nexperia USA Inc.In Stock: 10869BZX884S-C18-QYL Datasheet

MFR RecommendedRFQ

BZX884S-C18-QYL

Nexperia USA Inc.In Stock: 10869BZX884S-C18-QYL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZX884S-C18YL is determined by electrical and mechanical parameter compatibility within the Zener diode category. The primary substitute identified is the BZX884S-C18-QYL, which maintains functional equivalence through the following critical parameters:

Electrical Compatibility Criteria:

• Maximum power dissipation: 365 mW (identical)
• Impedance (Max): 45 Ohms (identical)
• Reverse leakage current: 50 nA @ 12.6 V (identical)
• Forward voltage: 900 mV @ 10 mA (identical)
• Operating temperature: 150°C (TJ) (identical)

Mechanical Compatibility Criteria:

• Package / Case: SOD-882 (identical)
• Supplier Device Package: DFN1006BD-2 (identical)
• Mounting Type: Surface Mount (identical)

Nominal Voltage Consideration: The BZX884S-C18-QYL operates at 18 V nominal with ±2.22% tolerance, compared to the 17.95 V nominal with ±6.41% tolerance of the BZX884S-C18YL. The tolerance band of the substitute part (17.64 V to 18.36 V) overlaps with the tolerance band of the original part (16.81 V to 19.09 V), establishing electrical equivalence for applications requiring Zener regulation in this voltage range.

Compliance and Status: The BZX884S-C18-QYL is active product status with AEC-Q100 automotive qualification, ROHS3 compliance, and MSL 1 rating, matching the environmental and regulatory requirements of the obsolete original part.

Parameter Comparison

Engineering Selection Recommendations

The BZX884S-C18-QYL is the direct substitute for the obsolete BZX884S-C18YL based on electrical and mechanical parameter equivalence. Selection of this substitute part is supported by the following factors:

Product Status: The substitute part maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

Compliance and Certification: The BZX884S-C18-QYL carries AEC-Q100 automotive qualification and ROHS3 compliance, meeting regulatory and quality standards equivalent to or exceeding those of the original part.

Electrical Performance: All critical electrical parameters—maximum power dissipation, impedance, reverse leakage current, and forward voltage—are identical between the original and substitute parts. The nominal voltage difference of 0.05 V falls within the tolerance overlap of both parts, maintaining functional equivalence in Zener regulation applications.

Packaging and Mounting: Identical SOD-882 package and DFN1006BD-2 supplier device package specifications ensure direct mechanical compatibility without PCB layout modifications or requalification.

Environmental Specifications: Matching operating temperature range (150°C TJ) and MSL 1 moisture sensitivity rating confirm environmental equivalence for storage, handling, and operational conditions.

Frequently Asked Questions (FAQ)

Q: Can the BZX884S-C18-QYL be used as a direct replacement for the BZX884S-C18YL without circuit modifications?

A: Yes. The substitute part maintains identical electrical parameters for power dissipation, impedance, reverse leakage, and forward voltage. The nominal voltage difference of 0.05 V is within the overlapping tolerance bands of both parts, and the identical SOD-882 package and DFN1006BD-2 supplier device package enable direct PCB compatibility.

Q: What is the significance of the tolerance difference between the original part (±6.41%) and the substitute (±2.22%)?

A: The substitute part features tighter tolerance specifications, which provides improved voltage regulation accuracy. The tolerance band of the substitute (17.64 V to 18.36 V) encompasses the nominal operating point of the original part and overlaps with its tolerance band (16.81 V to 19.09 V), ensuring functional equivalence while offering enhanced performance characteristics.

Q: Why does the substitute part have automotive grade and AEC-Q100 qualification when the original part does not list these attributes?

A: The BZX884S-C18-QYL is manufactured to automotive-grade standards and carries AEC-Q100 qualification, which represents a higher quality and reliability standard. This upgrade in qualification does not affect compatibility; rather, it ensures the substitute part meets or exceeds the quality requirements of the original part.

Q: Are there any package or mounting differences between the original and substitute parts?

A: No. Both parts use the SOD-882 package with DFN1006BD-2 supplier device package designation and surface mount mounting type. No PCB layout changes or requalification of assembly processes are required.

Q: What is the inventory status of the substitute part?

A: The BZX884S-C18-QYL is available in active production with 10,783 pieces in stock, compared to the original part which is obsolete with 869 pieces remaining. The substitute part provides reliable long-term availability for production and field replacement applications.

Q: Are the RoHS and environmental compliance ratings identical between the original and substitute parts?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, carry ECCN EAR99 classification, and share identical HTSUS code 8541.10.0050. Both parts also maintain MSL 1 (Unlimited) moisture sensitivity rating, confirming equivalent environmental and regulatory compliance.