BZX84J-B22,115 Equivalent & Substitute Parts

Part Overview

The BZX84J-B22,115 is a 22 V Zener diode manufactured by Nexperia USA Inc., rated for 550 mW power dissipation with ±2% voltage tolerance. This surface mount component is housed in an SOD-323F package and is qualified to AEC-Q101 automotive standards. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance can be achieved within the specified operating parameters, allowing for design flexibility, inventory optimization, or supply chain continuity while maintaining circuit functionality.

Substiute Parts

BZX84J-B22,115

Nexperia USA Inc.In Stock: 3893BZX84J-B22,115 Datasheet

Current PartRFQ

BZT52C22S-TP

Micro Commercial CoIn Stock: 3731BZT52C22S-TP Datasheet

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BZT52C22T-7

Diodes IncorporatedIn Stock: 6532BZT52C22T-7 Datasheet

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BZT52C22T-TP

Micro Commercial CoIn Stock: 6942BZT52C22T-TP Datasheet

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MM3Z22VB

onsemiIn Stock: 1586MM3Z22VB Datasheet

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MM3Z22VC

Fairchild SemiconductorIn Stock: 71408MM3Z22VC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZX84J-B22,115 is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Zener voltage (Vz) must be 22 V nominal
• Operating temperature range must encompass -65°C to 150°C
• Voltage tolerance must be compatible with circuit design requirements
• Power dissipation rating must be sufficient for the application

Mechanical Compatibility Criteria:

• Surface mount mounting type
• Package form factor (SOD-323F or equivalent footprint)
• RoHS3 compliance
• MSL rating of 1 (Unlimited)

Regulatory & Compliance Criteria:

• Active product status
• ROHS3 compliance
• REACH unaffected status
• EAR99 classification

Substitute parts are grouped based on power rating capability and tolerance specifications. Parts with lower power ratings (100 mW, 200 mW, 300 mW) are suitable for applications where the full 550 mW capability is not required. Parts with relaxed tolerance specifications (±5%, ±6%) are suitable for applications where the ±2% tolerance of the primary part is not mandatory.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

MM3Z22VB (onsemi) is the closest functional equivalent to the BZX84J-B22,115. Both parts maintain ±2% voltage tolerance, operate across the full -65°C to 150°C temperature range, and use the SOD-323F package. The MM3Z22VB is suitable for applications where the 550 mW rating of the primary part can be reduced to 200 mW without affecting circuit performance.

Secondary Substitutes (Reduced Power Rating):

BZT52C22T-7 (Diodes Incorporated) provides 300 mW power dissipation in an SOD-523 package. This part is suitable for applications where power dissipation requirements fall between 200 mW and 300 mW. The ±6% tolerance is acceptable for circuits not requiring the ±2% specification of the primary part.

BZT52C22S-TP (Micro Commercial Co) offers 200 mW in an SOD-323 package with ±6% tolerance. This part maintains the same package footprint as the primary part, facilitating direct board-level substitution in applications with reduced power requirements.

Minimum Power Rating Substitute:

BZT52C22T-TP (Micro Commercial Co) provides 100 mW power dissipation and is suitable only for low-power applications where dissipation requirements are minimal. The ±5% tolerance and SOD-523 package represent trade-offs in precision and footprint compatibility.

Tolerance Considerations:

Parts with ±5% or ±6% tolerance specifications are suitable for applications where the ±2% tolerance of the primary part is not a design requirement. All substitute parts maintain the 22 V nominal zener voltage and -65°C to 150°C operating temperature range.

Compliance Status:

All substitute parts listed are active products with ROHS3 compliance, REACH unaffected status, and EAR99 classification, matching the regulatory profile of the primary part.

Frequently Asked Questions (FAQ)

Q: Can BZT52C22T-7 replace BZX84J-B22,115 in any application?

A: BZT52C22T-7 can replace the primary part only in applications where power dissipation does not exceed 300 mW. The part maintains the 22 V nominal zener voltage and full operating temperature range. The SOD-523 package differs from the SOD-323F, requiring PCB layout verification. The ±6% tolerance is acceptable for circuits not requiring ±2% precision.

Q: What is the difference between SOD-323F and SOD-523 packages?

A: SOD-323F and SOD-523 are distinct surface mount packages with different footprints and thermal characteristics. SOD-323F is a smaller package used in the primary part and MM3Z22VB/MM3Z22VC substitutes. SOD-523 is used in BZT52C22T-7 and BZT52C22T-TP. Direct board-level substitution between these packages requires PCB redesign.

Q: Is MM3Z22VB a direct replacement for BZX84J-B22,115?

A: MM3Z22VB is functionally equivalent in electrical performance and package form factor. Both parts use SOD-323F packaging, maintain ±2% tolerance, and operate across -65°C to 150°C. The primary difference is power rating: MM3Z22VB is rated for 200 mW versus 550 mW for the primary part. Substitution is valid for applications where 200 mW dissipation is sufficient.

Q: Why do some substitute parts have higher reverse leakage current?

A: Reverse leakage current varies by manufacturer and device design. BZT52C22S-TP and BZT52C22T-7 specify 100 nA @ 15.4 V compared to 50 nA for the primary part. This difference is within normal manufacturing variation for zener diodes and does not affect substitution validity for standard applications.

Q: Can I use MM3Z22VC instead of MM3Z22VB?

A: Both parts are identical in package, power rating, and electrical characteristics except for tolerance specification. MM3Z22VC has ±5% tolerance versus ±2% for MM3Z22VB. Selection depends on circuit tolerance requirements. Both are suitable substitutes for the primary part in applications not requiring ±2% precision.

Q: What is the impact of different impedance (Zzt) values?

A: Impedance values differ across substitute parts: primary part 25 Ohms, BZT52 series 55 Ohms, MM3Z series 51 Ohms. Lower impedance provides better voltage regulation under load changes. Substitution is valid when circuit design accommodates the impedance specification of the selected part.

Q: Are all substitute parts automotive qualified?

A: The primary part BZX84J-B22,115 carries AEC-Q101 automotive qualification. Substitute parts listed do not explicitly state automotive qualification in the provided specifications. Verification of automotive qualification requirements is necessary for applications requiring AEC-Q101 compliance.