BZX584B11 Equivalent & Substitute Parts

Part Overview

The BZX584B11 is an active-status zener diode manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in SOD-523F packaging. This component operates at a nominal zener voltage of 11 V with 150 mW maximum power dissipation and ±2% tolerance. The part is ROHS3 compliant and REACH unaffected, making it suitable for modern electronic applications requiring voltage regulation and protection circuits. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and packaging equivalence to ensure direct functional replacement in circuit designs.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	11	V
Tolerance	±2	%
Power - Max	150	mW
Impedance (Max)	20	Ohms
Current - Reverse Leakage @ Vr	100 nA @ 8 V	nA
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-79, SOD-523	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the BZX584B11 are qualified based on the following critical parameters:

Electrical Equivalence Criteria:

Voltage - Zener (Nom): 11 V
Tolerance: ±2%
Power - Max: 150 mW
Impedance (Max): 20 Ohms
Current - Reverse Leakage @ Vr: 100 nA @ 8 V
Operating Temperature Range: -55°C to 150°C

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount
Package / Case: SC-79, SOD-523 or SOD-523F

Compliance Criteria:

RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

All identified substitute parts meet these parameters without exception. Packaging format variations (Tape & Reel versus Cut Tape & Digi-Reel) do not affect electrical or mechanical compatibility and represent only supply chain and handling differences.

Parameter Comparison

Parameter	BZX584B11 (Taiwan Semiconductor)	BZX584B11 RSG (Taiwan Semiconductor)	BZX584B11 (Good-Ark Semiconductor)
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Good-Ark Semiconductor
Voltage - Zener (Nom)	11 V	11 V	11 V
Tolerance	±2%	±2%	±2%
Power - Max	150 mW	150 mW	150 mW
Impedance (Max)	20 Ohms	20 Ohms	20 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 8 V	100 nA @ 8 V	100 nA @ 8 V
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523
Supplier Device Package	SOD-523F	SOD-523F	SOD-523
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts listed—BZX584B11 from Taiwan Semiconductor Corporation (Tape & Reel packaging), BZX584B11 RSG from Taiwan Semiconductor Corporation (Cut Tape & Digi-Reel packaging), and BZX584B11 from Good-Ark Semiconductor (Cut Tape & Digi-Reel packaging)—are active-status components with full ROHS3 compliance and REACH unaffected status.

The BZX584B11 RSG variant from Taiwan Semiconductor Corporation offers the highest available inventory (104,644 pieces) and includes specified Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating superior moisture handling characteristics for storage and assembly environments.

The Good-Ark Semiconductor BZX584B11 provides an alternative manufacturer source with 7,061 pieces in stock and includes forward voltage specification (900 mV @ 10 mA), offering additional parametric documentation for applications requiring this data.

Selection between these parts depends on supply chain requirements, inventory availability, and any design-specific documentation needs. All three parts are electrically and mechanically interchangeable for the specified application.

Frequently Asked Questions (FAQ)

Q: Can BZX584B11 RSG be used as a direct replacement for BZX584B11?

A: Yes. Both parts are manufactured by Taiwan Semiconductor Corporation with identical electrical specifications (11 V nominal zener voltage, 150 mW power rating, ±2% tolerance, 20 Ohms maximum impedance, and -55°C to 150°C operating range). The RSG designation indicates Cut Tape & Digi-Reel packaging format, while the standard BZX584B11 uses Tape & Reel packaging. This packaging difference does not affect electrical or mechanical compatibility.

Q: Is the Good-Ark Semiconductor BZX584B11 compatible with the Taiwan Semiconductor version?

A: Yes. The Good-Ark Semiconductor BZX584B11 meets all critical electrical parameters: 11 V nominal zener voltage, 150 mW maximum power, ±2% tolerance, 20 Ohms maximum impedance, and 100 nA reverse leakage current at 8 V. Operating temperature range (-55°C to 150°C) and surface mount SOD-523 packaging are identical. Both manufacturers' parts are ROHS3 compliant and REACH unaffected.

Q: What is the difference between SOD-523F and SOD-523 packaging designations?

A: Both designations refer to the same physical package form factor (SC-79). The "F" suffix in SOD-523F is a supplier-specific designation used by Taiwan Semiconductor Corporation. The mechanical and electrical compatibility remains unchanged. Parts specified as SOD-523 or SOD-523F are interchangeable in circuit applications.

Q: Are all three parts suitable for high-temperature applications?

A: Yes. All three parts operate across the identical temperature range of -55°C to 150°C (TJ), meeting requirements for both industrial and high-temperature environments.

Q: What compliance certifications apply to these parts?

A: All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

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