BZX84C5V6LT3 Equivalent & Substitute Parts

Part Overview

The BZX84C5V6LT3 is a Zener diode rated at 5.6 V nominal with 225 mW maximum power dissipation in a surface mount SOT-23-3 (TO-236) package. Manufactured by onsemi, this component is classified as obsolete product status. Due to its obsolete designation, direct replacement with active production equivalents is necessary for new designs and ongoing procurement requirements. Substitute parts maintain identical electrical specifications while offering improved availability and compliance status.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	5.6	V
Tolerance	±7%	—
Power - Max	225	mW
Impedance (Max)	40	Ohms
Current - Reverse Leakage @ Vr	1	µA @ 2 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	-65 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BZX84C5V6LT3 is determined by the following electrical and mechanical parameters:

Critical Parameters for Substitution:

Voltage - Zener (Nom): 5.6 V
Power - Max: 225 mW
Impedance (Max): 40 Ohms
Current - Reverse Leakage @ Vr: 1 µA @ 2 V
Voltage - Forward (Vf) (Max) @ If: 900 mV @ 10 mA
Operating Temperature Range: -65°C to 150°C
Package / Case: TO-236-3, SC-59, SOT-23-3
Mounting Type: Surface Mount

Substitution Categories:

Direct Manufacturer Equivalent: Parts with identical electrical specifications and active product status from the same manufacturer (onsemi), differing only in packaging format or compliance certifications.

Parametric Equivalent: Parts with identical electrical specifications but different tolerance grades (±2% vs. ±7%) or automotive qualifications (AEC-Q101), maintaining full functional compatibility.

Similar Alternative: Parts from alternative manufacturers (Nexperia) with equivalent electrical performance and package compatibility, offering higher power ratings or tighter tolerances.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Zzt (Ohms)	Vf @ If (mV)	Temp Range (°C)	Package	Status	RoHS	Grade
BZX84C5V6LT3	onsemi	5.6	±7%	225	40	900 @ 10 mA	-65 to 150	SOT-23-3	Obsolete	Non-compliant	—
BZX84C5V6LT3G	onsemi	5.6	±7%	225	40	900 @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant	—
BZX84B5V6LT1G	onsemi	5.6	±2%	225	40	900 @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant	—
BZX84C5V6ET3G	onsemi	5.6	±7%	225	40	900 @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant	—
BZX84C5V6LT1G	onsemi	5.6	±7%	225	40	900 @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant	—
SZBZX84B5V6LT1G	onsemi	5.6	±2%	225	40	900 @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant	Automotive
SZBZX84C5V6ET1G	onsemi	5.6	±7%	225	40	900 @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant	Automotive
SZBZX84C5V6ET3G	onsemi	5.6	±7%	225	40	900 @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant	Automotive
SZBZX84C5V6LT1G	onsemi	5.6	±7%	225	40	900 @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant	Automotive
SZBZX84C5V6LT3G	onsemi	5.6	±7%	225	40	900 @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant	Automotive
BZX84-A5V6,215	Nexperia USA Inc.	5.6	±1%	250	40	900 @ 10 mA	-65 to 150	SOT-23-3	Active	ROHS3 Compliant	Automotive

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

BZX84C5V6LT3G is the primary direct equivalent, offering identical electrical specifications with active product status and ROHS3 compliance. This part is recommended for applications requiring no design modification and maximum inventory availability (20,100 units in stock).

BZX84C5V6LT1G provides equivalent performance in Cut Tape and Digi-Reel packaging format, with the highest inventory level (95,300 units). Selection between LT3G and LT1G variants depends on packaging requirements.

For Improved Tolerance Requirements:

BZX84B5V6LT1G offers tighter tolerance specification (±2% vs. ±7%) while maintaining all other electrical parameters. This part is suitable for applications requiring enhanced voltage regulation precision. ROHS3 compliance is confirmed.

For Automotive Applications:

SZBZX84C5V6ET3G is recommended for automotive-grade requirements, providing AEC-Q101 qualification with ±7% tolerance and highest inventory availability (480,400 units). This part is suitable for automotive circuit protection and voltage regulation applications.

SZBZX84B5V6LT1G provides automotive-grade performance with tighter ±2% tolerance specification and AEC-Q101 qualification.

For Alternative Manufacturer Selection:

BZX84-A5V6,215 (Nexperia) offers higher power rating (250 mW vs. 225 mW) and tighter tolerance (±1%) with automotive qualification. This part is suitable for applications requiring enhanced performance margins or alternative supply chain sourcing.

Frequently Asked Questions (FAQ)

Q: Can BZX84C5V6LT3 be directly replaced with BZX84C5V6LT3G?

A: Yes. BZX84C5V6LT3G is the direct equivalent with identical electrical specifications (5.6 V, ±7%, 225 mW, 40 Ohms impedance). The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant vs. Non-compliant). Electrical performance and package compatibility are identical.

Q: What is the difference between BZX84C5V6LT1G and BZX84C5V6LT3G?

A: Both parts have identical electrical specifications. The difference is packaging format: LT1G is supplied in Cut Tape and Digi-Reel format, while LT3G is supplied in Tape & Reel format. Selection depends on procurement and assembly requirements.

Q: When should I use BZX84B5V6LT1G instead of BZX84C5V6LT1G?

A: BZX84B5V6LT1G provides tighter tolerance specification (±2% vs. ±7%) while maintaining identical power rating and impedance. Use this part when voltage regulation precision is critical to circuit performance. All other electrical parameters remain unchanged.

Q: Are SZBZX84 series parts compatible with standard BZX84 applications?

A: Yes. SZBZX84 series parts maintain identical electrical specifications (5.6 V, 225 mW, 40 Ohms impedance) and package compatibility (SOT-23-3). The primary difference is automotive-grade qualification (AEC-Q101) and enhanced manufacturing controls. These parts are direct functional equivalents suitable for any application requiring the specified electrical parameters.

Q: Can I use the Nexperia BZX84-A5V6,215 as a substitute?

A: Yes, with design considerations. BZX84-A5V6,215 provides equivalent 5.6 V zener voltage and identical package (SOT-23-3). Advantages include higher power rating (250 mW vs. 225 mW) and tighter tolerance (±1% vs. ±7%). This part is suitable for applications where enhanced performance margins are beneficial. Verify circuit design compatibility with the higher power rating.

Q: What is the significance of the "G" suffix in part numbers like BZX84C5V6LT3G?

A: The "G" suffix indicates RoHS3 compliance and lead-free manufacturing. This designation is required for applications subject to RoHS regulations. All active production equivalents include this suffix.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts are available in SOT-23-3 (TO-236) surface mount package. Packaging format variations (Tape & Reel, Cut Tape, Digi-Reel) differ by part number suffix. Verify specific packaging requirements with procurement specifications.

Q: Which substitute part has the highest inventory availability?

A: SZBZX84C5V6ET3G has the highest inventory level at 480,400 units in stock. This part provides automotive-grade qualification with ±7% tolerance and is suitable for high-volume procurement requirements.

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