BZX584B22 Equivalent & Substitute Parts

Part Overview

The BZX584B22 is an active-status zener diode manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in the SOD-523F package. This component operates at a nominal zener voltage of 22 V with 150 mW maximum power dissipation and ±2% tolerance. The part is ROHS3 compliant and REACH unaffected, making it suitable for regulated electronic applications requiring voltage regulation or protection circuits. Substitute parts are identified when packaging format changes, alternative manufacturers provide equivalent electrical specifications, or inventory availability requires alternative sourcing while maintaining identical functional parameters.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	22	V
Tolerance	±2	%
Power - Max	150	mW
Impedance (Max)	55	Ohms
Current - Reverse Leakage @ Vr	100 nA @ 15.4 V	nA
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	mV
Operating Temperature Range	-55 to 150	°C
Package / Case	SC-79, SOD-523	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the BZX584B22 is determined by electrical parameter equivalence and mechanical compatibility. All substitute parts must maintain identical zener voltage (22 V), tolerance (±2%), maximum power rating (150 mW), impedance specification (55 Ohms maximum), reverse leakage current (100 nA @ 15.4 V), forward voltage (900 mV @ 10 mA), and operating temperature range (-55°C to 150°C). The package designation SC-79/SOD-523 remains constant across all substitutes. Packaging format variations (Tape & Reel versus Cut Tape & Digi-Reel) do not affect electrical substitution eligibility. Compliance certifications including ROHS3 and REACH status are maintained across all identified substitutes. Manufacturer differences are acceptable provided all electrical and mechanical parameters remain within specified tolerances.

Parameter Comparison

Parameter	BZX584B22 (Main)	BZX584B22 RSG (Substitute)	BZX584B22HE3-TP (Substitute)
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Micro Commercial Co
Voltage - Zener (Nom)	22 V	22 V	22 V
Tolerance	±2%	±2%	±2%
Power - Max	150 mW	150 mW	150 mW
Impedance (Max)	55 Ohms	55 Ohms	55 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 15.4 V	100 nA @ 15.4 V	100 nA @ 15.4 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature Range	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Package / Case	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Packaging Format	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
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—BZX584B22, BZX584B22 RSG, and BZX584B22HE3-TP—are electrically and mechanically equivalent for direct substitution in applications requiring a 22 V, 150 mW zener diode in SOD-523 surface mount package. Selection between these parts is based on packaging format availability and inventory requirements rather than electrical performance differences.

The BZX584B22 RSG offers identical electrical specifications with Cut Tape and Digi-Reel packaging options, providing flexibility for different assembly processes. The BZX584B22HE3-TP, manufactured by Micro Commercial Co, maintains all electrical parameters and adds automotive-grade qualification with AEC-Q101 certification, making it suitable for applications requiring automotive compliance standards. Both substitute parts maintain ROHS3 compliance and REACH unaffected status consistent with the main part.

Selection should prioritize part availability, packaging format compatibility with assembly equipment, and any application-specific compliance requirements such as automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can BZX584B22 RSG be used as a direct replacement for BZX584B22?

A: Yes. Both parts are manufactured by Taiwan Semiconductor Corporation with identical electrical specifications: 22 V zener voltage, ±2% tolerance, 150 mW power rating, 55 Ohms maximum impedance, and SOD-523 surface mount package. The only difference is packaging format (Tape & Reel versus Cut Tape & Digi-Reel), which does not affect electrical performance or circuit functionality.

Q: What is the difference between BZX584B22HE3-TP and the other substitutes?

A: BZX584B22HE3-TP is manufactured by Micro Commercial Co instead of Taiwan Semiconductor Corporation. All electrical parameters remain identical. The primary distinction is automotive-grade qualification with AEC-Q101 certification, making this part suitable for automotive applications requiring specific qualification standards. Packaging format is Tape & Reel, matching the main part.

Q: Are all three parts ROHS3 compliant?

A: Yes. BZX584B22, BZX584B22 RSG, and BZX584B22HE3-TP are all ROHS3 compliant and REACH unaffected, meeting regulatory requirements for restricted substances in electronic components.

Q: Can packaging format differences affect circuit performance?

A: No. Packaging format differences (Tape & Reel versus Cut Tape & Digi-Reel) relate only to component delivery and handling methods. Once soldered into a circuit, the electrical and thermal performance of the zener diode remains identical regardless of original packaging format.

Q: Which substitute should be selected for automotive applications?

A: BZX584B22HE3-TP is qualified for automotive applications with AEC-Q101 certification. This part is the appropriate selection when automotive-grade components are required by design specifications or regulatory standards.

Q: Are there any temperature or impedance differences between substitutes?

A: No. All three parts operate across the identical temperature range (-55°C to 150°C) and maintain the same maximum impedance specification (55 Ohms). Electrical performance under all operating conditions is equivalent.

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