BZX84C5V6_D87Z Equivalent & Substitute Parts

Part Overview

The BZX84C5V6_D87Z is a 5.6 V Zener diode manufactured by onsemi, designed for surface mount applications in the SOT-23-3 package. This component is classified as obsolete, indicating that direct procurement from original inventory may be limited. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing 5.6 V Zener regulation.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	5.6 V
Tolerance	±7%
Power - Max	350 mW
Impedance (Max)	40 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 2 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA
Operating Temperature	-55°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the BZX84C5V6_D87Z is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 5.6 V (nominal)
Voltage tolerance: ±7% or tighter
Power dissipation: 350 mW or greater
Impedance (Max): 40 Ohms or lower
Reverse leakage current: 1 µA @ 2 V or lower
Forward voltage: 900 mV @ 10 mA or lower
Operating temperature range: -55°C to 150°C minimum
Package: SOT-23-3 (TO-236-3, SC-59)
Mounting: Surface Mount

Substitute parts are grouped into two categories:

Direct Equivalents: Parts meeting all primary criteria with identical or superior electrical specifications and active product status.

Functional Upgrades: Parts exceeding power dissipation or offering enhanced specifications (tighter tolerance, lower impedance, automotive qualification) while maintaining full electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Temp Range	Status	Packaging
BZX84C5V6_D87Z	onsemi	5.6 V	±7%	350 mW	40 Ω	-55°C ~ 150°C	Obsolete	SOT-23-3
BZX84C5V6ET3G	onsemi	5.6 V	±7%	225 mW	40 Ω	-65°C ~ 150°C	Active	SOT-23-3 (TR)
BZX84C5V6LT1G	onsemi	5.6 V	±7%	225 mW	40 Ω	-65°C ~ 150°C	Active	SOT-23-3 (CT)
BZX84C5V6LT3G	onsemi	5.6 V	±7%	225 mW	40 Ω	-65°C ~ 150°C	Active	SOT-23-3 (TR)
SZBZX84C5V6LT1G	onsemi	5.6 V	±7%	225 mW	40 Ω	-65°C ~ 150°C	Active	SOT-23-3 (TR)
BZX84C5V6-7-F	Diodes Incorporated	5.6 V	±7%	300 mW	40 Ω	-65°C ~ 150°C	Active	SOT-23-3 (CT)
BZX84-A5V6,215	Nexperia USA Inc.	5.6 V	±1%	250 mW	40 Ω	-65°C ~ 150°C	Active	TO-236AB (TR)
BZX84-C5V6,235	Nexperia USA Inc.	5.6 V	±5%	250 mW	40 Ω	-65°C ~ 150°C	Active	TO-236AB (TR)
BZX84B5V6Q-13-F	Diodes Incorporated	5.6 V	±2%	300 mW	40 Ω	-65°C ~ 150°C	Active	SOT-23-3 (TR)
MMBZ5232B-7-F	Diodes Incorporated	5.6 V	±5%	350 mW	11 Ω	-65°C ~ 150°C	Active	SOT-23-3 (TR)
MMBZ5232B-TP	Micro Commercial Co	5.6 V	±5%	350 mW	11 Ω	-55°C ~ 150°C	Active	SOT-23 (TR)

Engineering Selection Recommendations

For Direct Replacement (Lowest Risk):

Select BZX84C5V6LT1G or BZX84C5V6LT3G (onsemi). Both parts maintain identical electrical specifications to the obsolete BZX84C5V6_D87Z with ±7% tolerance and 40 Ohm impedance. These parts are active products with extended temperature range (-65°C to 150°C) and RoHS3 compliance. BZX84C5V6LT1G offers higher inventory availability (95,300 pcs) in Cut Tape packaging, while BZX84C5V6LT3G is available in Tape & Reel format (20,100 pcs).

For Enhanced Performance (Power Margin):

Select MMBZ5232B-7-F (Diodes Incorporated) or MMBZ5232B-TP (Micro Commercial Co). Both deliver 350 mW power dissipation matching the original specification, with superior impedance characteristics (11 Ohms versus 40 Ohms). These parts provide lower dynamic impedance for improved voltage regulation. MMBZ5232B-7-F is recommended for highest availability (61,436 pcs) and active product status.

For Automotive Applications:

Select SZBZX84C5V6LT1G (onsemi, AEC-Q101 qualified) or BZX84-A5V6,215 (Nexperia, AEC-Q101 qualified). Both meet automotive qualification standards. SZBZX84C5V6LT1G maintains onsemi compatibility with ±7% tolerance. BZX84-A5V6,215 offers tighter ±1% tolerance for precision applications.

For Tight Tolerance Requirements:

Select BZX84B5V6Q-13-F (Diodes Incorporated, ±2% tolerance) or BZX84-A5V6,215 (Nexperia, ±1% tolerance). Both provide superior voltage accuracy with 300 mW and 250 mW power ratings respectively, suitable for precision voltage reference applications.

All recommended substitutes are active products with RoHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can BZX84C5V6LT1G directly replace BZX84C5V6_D87Z?

A: Yes. BZX84C5V6LT1G is a direct functional equivalent with identical 5.6 V nominal voltage, ±7% tolerance, and 40 Ohm impedance. The primary difference is reduced power rating (225 mW versus 350 mW). This substitution is valid for applications where power dissipation does not exceed 225 mW. Extended temperature range (-65°C to 150°C) provides additional margin.

Q: What is the difference between BZX84C5V6LT1G and BZX84C5V6LT3G?

A: Both parts are electrically identical with 5.6 V, ±7% tolerance, 225 mW power, and 40 Ohm impedance. The difference is packaging format: BZX84C5V6LT1G is supplied in Cut Tape (CT) & Digi-Reel format with 95,300 pcs inventory, while BZX84C5V6LT3G is supplied in Tape & Reel (TR) format with 20,100 pcs inventory. Selection depends on assembly equipment compatibility and volume requirements.

Q: Why does MMBZ5232B-7-F have lower impedance (11 Ohms) than the original part (40 Ohms)?

A: Lower impedance indicates superior dynamic performance and tighter voltage regulation under load changes. MMBZ5232B-7-F maintains the same 5.6 V nominal voltage and ±5% tolerance but provides enhanced regulation characteristics. This is a functional upgrade suitable for applications requiring improved transient response.

Q: Is MMBZ5232B-7-F compatible with the original BZX84C5V6_D87Z footprint?

A: Yes. Both parts use SOT-23-3 package (TO-236-3, SC-59). Mechanical and electrical pin configurations are identical, enabling direct PCB substitution without layout modifications.

Q: What is the significance of AEC-Q101 qualification on SZBZX84C5V6LT1G and BZX84-A5V6,215?

A: AEC-Q101 qualification indicates automotive-grade reliability testing and qualification. These parts meet automotive industry standards for temperature cycling, moisture resistance, and long-term reliability. Selection is required for automotive applications or systems requiring automotive-grade component certification.

Q: Can I use BZX84-A5V6,215 (±1% tolerance) in place of BZX84C5V6_D87Z (±7% tolerance)?

A: Yes. Tighter tolerance is always compatible with looser tolerance specifications. BZX84-A5V6,215 provides superior voltage accuracy (±1%) and is suitable for precision voltage reference applications. The 250 mW power rating is adequate for applications not exceeding this limit.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape packaging is supplied on carrier tape in smaller quantities suitable for manual assembly or low-volume production. Tape & Reel packaging is supplied on continuous reel format optimized for automated pick-and-place assembly equipment. Both formats contain identical components; selection depends on assembly process requirements.

Q: Is RoHS3 compliance important for my application?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. All recommended substitutes are RoHS3 compliant. Compliance is mandatory for products sold in the European Union and increasingly required by global supply chain standards.

Q: Can I substitute MMBZ5232B-TP (Micro Commercial Co) for the onsemi original?

A: Yes. MMBZ5232B-TP is electrically equivalent with 5.6 V, ±5% tolerance, 350 mW power, and 11 Ohm impedance. The part is active with RoHS3 compliance. Operating temperature range is -55°C to 150°C, matching the original specification. Substitution is valid for all applications within these parameters.

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