BZX584C11-V-G-08 Equivalent & Substitute Parts

Part Overview

The BZX584C11-V-G-08 is a Zener diode rated at 11 V nominal voltage with 200 mW maximum power dissipation in a surface mount SOD-523 package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, equivalent substitute parts are necessary to maintain design continuity and ensure long-term supply chain reliability for applications requiring 11 V Zener regulation in compact surface mount form factors.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	11	V
Tolerance	±5	%
Power - Maximum	200	mW
Impedance (Maximum)	20	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 8 V
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-79, SOD-523	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BZX584C11-V-G-08 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - Zener (Nominal): 11 V (exact match required)
Tolerance: ±5% (exact match required)
Package / Case: SOD-523 or equivalent surface mount package
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Parameters:

Power - Maximum: 200 mW or greater (equal or higher rating acceptable)
Impedance (Maximum): 20 Ohms or lower (equal or lower acceptable)
Current - Reverse Leakage @ Vr: 100 nA or lower (equal or lower acceptable)
Operating Temperature Range: Must encompass or match -65°C to 150°C

Substitute parts must maintain identical Zener voltage and tolerance specifications. Power rating, impedance, and leakage current may be equal to or better than the original specification. Package form factor must be compatible with SOD-523 surface mount assembly processes. All substitutes must maintain ROHS3 compliance and MSL Level 1 rating.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power Max	Impedance Max	Reverse Leakage @ Vr	Temp Range	Package	Status
BZX584C11-V-G-08	Vishay	11 V	±5%	200 mW	20 Ω	100 nA @ 8 V	-65 to 150°C	SOD-523	Obsolete
BZX584C11-G3-08	Vishay	11 V	±5%	200 mW	10 Ω	100 nA @ 8 V	-65 to 150°C	SOD-523	Active
BZT52C11T-7	Diodes Incorporated	11 V	±5%	300 mW	20 Ω	100 nA @ 8 V	-65 to 150°C	SOD-523	Active
BZT52C11T-TP	Micro Commercial Co	11 V	±5%	100 mW	20 Ω	100 nA @ 8 V	-65 to 150°C	SOD-523	Active
CZRU52C11	Comchip Technology	11 V	±5%	150 mW	20 Ω	100 nA @ 8.5 V	-55 to 125°C	0603/SOD-523F	Active
CZRUR52C11	Comchip Technology	11 V	±5%	150 mW	20 Ω	100 nA @ 8.5 V	-55 to 125°C	0603/SOD-523F	Active
DDZ9698T-7	Diodes Incorporated	11 V	±5%	150 mW	Not specified	50 nA @ 8.4 V	-65 to 150°C	SOD-523	Active

Engineering Selection Recommendations

Primary Recommendation: BZX584C11-G3-08

The BZX584C11-G3-08 is the direct Vishay equivalent with active product status. This part maintains identical electrical specifications to the original BZX584C11-V-G-08 while offering improved impedance performance (10 Ω versus 20 Ω maximum). Both parts are ROHS3 compliant, MSL Level 1, and packaged in SOD-523. The BZX584C11-G3-08 is available in significantly higher inventory (6454 units) compared to the obsolete original part (913 units).

Secondary Recommendation: BZT52C11T-7

The BZT52C11T-7 from Diodes Incorporated is an active substitute offering enhanced power dissipation capability (300 mW versus 200 mW). This part maintains the full operating temperature range (-65°C to 150°C), identical Zener voltage and tolerance specifications, and SOD-523 packaging. The higher power rating provides design margin for applications approaching thermal limits.

Alternative for Reduced Power Requirements: BZT52C11T-TP

The BZT52C11T-TP from Micro Commercial Co is suitable for applications with lower power dissipation requirements (100 mW). This part maintains full temperature range operation and identical electrical specifications except power rating. Selection of this part is appropriate only when circuit analysis confirms maximum power dissipation does not exceed 100 mW.

Package-Constrained Alternative: CZRU52C11 / CZRUR52C11

The Comchip Technology parts CZRU52C11 and CZRUR52C11 are functionally equivalent but use 0603/SOD-523F packaging instead of standard SOD-523. These parts are suitable only for designs with 0603 footprint compatibility. Operating temperature range is reduced to -55°C to 125°C. Selection requires verification that application temperature requirements do not exceed this range.

Low-Leakage Alternative: DDZ9698T-7

The DDZ9698T-7 from Diodes Incorporated offers superior reverse leakage performance (50 nA @ 8.4 V versus 100 nA @ 8 V). This part is suitable for precision applications requiring minimal leakage current. Power rating is 150 mW, requiring verification that circuit design does not exceed this limit. Full temperature range operation (-65°C to 150°C) is maintained.

Frequently Asked Questions (FAQ)

Q: Can BZT52C11T-TP be used as a direct replacement for BZX584C11-V-G-08?

A: BZT52C11T-TP is electrically compatible for Zener voltage, tolerance, and temperature range. However, the power rating is reduced to 100 mW versus the original 200 mW specification. This part is suitable only if circuit analysis confirms maximum power dissipation does not exceed 100 mW under all operating conditions.

Q: What is the difference between BZX584C11-G3-08 and the original BZX584C11-V-G-08?

A: Both parts share identical Zener voltage (11 V), tolerance (±5%), power rating (200 mW), and operating temperature range (-65°C to 150°C). The BZX584C11-G3-08 offers improved impedance specification (10 Ω maximum versus 20 Ω maximum). The original part is obsolete; the G3-08 variant is active with higher inventory availability.

Q: Are CZRU52C11 and CZRUR52C11 interchangeable?

A: CZRU52C11 and CZRUR52C11 are functionally equivalent with identical electrical specifications. Both use 0603/SOD-523F packaging. Selection between these parts depends on supplier availability and packaging format preference (tape and reel). Both are active products with comparable inventory levels.

Q: Can I use BZT52C11T-7 in place of BZX584C11-V-G-08 in a space-constrained application?

A: BZT52C11T-7 is electrically compatible and maintains SOD-523 packaging. The higher power rating (300 mW) provides additional thermal margin. Compatibility depends on PCB layout and thermal management design. No physical package incompatibility exists between these parts.

Q: What is the impact of using CZRU52C11 instead of BZX584C11-V-G-08?

A: CZRU52C11 maintains identical Zener voltage and tolerance but uses 0603/SOD-523F packaging instead of standard SOD-523. Operating temperature range is reduced to -55°C to 125°C. Power rating is 150 mW. This part is suitable only for designs with 0603 footprint compatibility and temperature requirements within the -55°C to 125°C range.

Q: Does DDZ9698T-7 offer any performance advantage over the original part?

A: DDZ9698T-7 provides superior reverse leakage performance (50 nA @ 8.4 V versus 100 nA @ 8 V), making it suitable for precision applications requiring minimal leakage current. Power rating is 150 mW, requiring verification that circuit design does not exceed this specification. Full temperature range operation is maintained.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant and maintain MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original BZX584C11-V-G-08 specifications.

Q: What should I consider when selecting between multiple substitute options?

A: Selection criteria include: (1) power dissipation requirements relative to circuit design, (2) operating temperature range requirements, (3) package footprint compatibility with PCB layout, (4) impedance and leakage current specifications for precision applications, and (5) supplier inventory and lead time availability.

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