BZX84C15W-TP Equivalent & Substitute Parts

Part Overview

The BZX84C15W-TP is a 15 V Zener diode rated for 200 mW power dissipation in a surface mount SOT-323 package, manufactured by Micro Commercial Co. This component is classified as Active and is ROHS3 compliant. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage circuits. Substitute parts are identified based on matching electrical characteristics and package compatibility to ensure functional equivalence in circuit applications.

Substiute Parts

BZX84C15W-TP

Micro Commercial CoIn Stock: 1158BZX84C15W-TP Datasheet

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BZX84C15W-7-F

Diodes IncorporatedIn Stock: 38913BZX84C15W-7-F Datasheet

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MMBZ5245BT-7-F

Diodes IncorporatedIn Stock: 659MMBZ5245BT-7-F Datasheet

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MMBZ5245BW-7-F

Diodes IncorporatedIn Stock: 14205MMBZ5245BW-7-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of Zener diodes is determined by the following critical parameters:

Primary Matching Criteria:

• Zener voltage (Vz): Must be 15 V nominal
• Power rating (Pmax): Must support 200 mW or greater
• Package type: SOT-323 or SOT-523 (both surface mount, compatible with standard pick-and-place equipment)
• Tolerance: ±6% or tighter (±5%)
• Reverse leakage current: 100 nA or lower at specified reverse voltage
• Operating temperature range: Must encompass application requirements

Substitution Logic: Parts are grouped as direct substitutes when they maintain the 15 V Zener voltage specification and support the 200 mW power requirement in compatible surface mount packages. The BZX84C15W-7-F and MMBZ5245BW-7-F are direct substitutes in SOT-323 packaging. The MMBZ5245BT-7-F is a functional equivalent with reduced power rating (150 mW) and alternate package (SOT-523); this part is suitable only for applications where power dissipation does not exceed 150 mW.

Parameter Comparison

Engineering Selection Recommendations

BZX84C15W-7-F (Diodes Incorporated): This part is a direct substitute for the BZX84C15W-TP. It maintains identical Zener voltage (15 V), power rating (200 mW), impedance (30 Ohms), and SOT-323 package. Both parts are ROHS3 compliant with MSL 1 rating. The operating temperature range of -65 to 125°C is narrower than the main part; applications requiring operation below -55°C or above 125°C must verify compatibility. This part has higher inventory availability (38,903 units).

MMBZ5245BW-7-F (Diodes Incorporated): This part is a direct substitute for the BZX84C15W-TP in SOT-323 packaging. It maintains the 15 V Zener voltage and 200 mW power rating. The tolerance is tighter (±5% versus ±6%), and impedance is lower (16 Ohms versus 30 Ohms), resulting in improved voltage regulation characteristics. Operating temperature range extends to -65 to 150°C, providing broader thermal coverage. ROHS3 compliant with MSL 1 rating. Inventory availability is 14,142 units.

MMBZ5245BT-7-F (Diodes Incorporated): This part is a functional equivalent with reduced power rating (150 mW versus 200 mW) and alternate SOT-523 package. It maintains the 15 V Zener voltage and is suitable only for applications where power dissipation does not exceed 150 mW. Tolerance is ±5%, impedance is 16 Ohms, and operating temperature range is -65 to 150°C. ROHS3 compliant with MSL 1 rating. Inventory availability is 649 units. Package change from SOT-323 to SOT-523 requires PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can BZX84C15W-7-F be used as a direct replacement for BZX84C15W-TP?

A: Yes. Both parts share identical Zener voltage (15 V), power rating (200 mW), impedance (30 Ohms), and SOT-323 package. The operating temperature range differs (-65 to 125°C versus -55 to 150°C); verify that your application does not require operation outside the -65 to 125°C window.

Q: What is the difference between MMBZ5245BW-7-F and BZX84C15W-TP?

A: Both parts are 15 V, 200 mW Zener diodes in SOT-323 packages. MMBZ5245BW-7-F has tighter tolerance (±5% versus ±6%), lower impedance (16 Ohms versus 30 Ohms), and extended operating temperature range (-65 to 150°C versus -55 to 150°C). These differences result in improved voltage regulation performance.

Q: Can MMBZ5245BT-7-F replace BZX84C15W-TP?

A: MMBZ5245BT-7-F is a functional equivalent only for applications where power dissipation does not exceed 150 mW. The part is rated for 150 mW versus 200 mW for the main part. Additionally, the SOT-523 package differs from SOT-323, requiring PCB layout changes. Verify power requirements before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. BZX84C15W-7-F, MMBZ5245BW-7-F, and MMBZ5245BT-7-F are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the impact of impedance differences between substitute parts?

A: Impedance affects voltage regulation quality. Lower impedance (16 Ohms in MMBZ5245 series versus 30 Ohms in BZX84C15W series) provides better voltage stability and lower output impedance, resulting in improved regulation performance under varying load conditions.

Q: Do substitute parts require PCB layout modifications?

A: BZX84C15W-7-F and MMBZ5245BW-7-F use identical SOT-323 packages and require no layout changes. MMBZ5245BT-7-F uses SOT-523 package and requires PCB footprint modification.