CZRQR30VB-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The CZRQR30VB-HF is a 30 V Zener diode manufactured by Comchip Technology, rated for 125 mW power dissipation in a surface mount 0402 package. This component is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute parts must maintain electrical compatibility across voltage regulation, power handling, and thermal operating ranges while accommodating packaging and tolerance variations.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	30	V
Tolerance	±3%	-
Power - Max	125	mW
Impedance (Max)	78	Ohms
Current - Reverse Leakage @ Vr	100 nA @ 23 V	-
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	-
Operating Temperature	-55°C ~ 125°C	-
Mounting Type	Surface Mount	-
Package / Case	0402 (1006 Metric)	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the CZRQR30VB-HF is determined by the following critical parameters:

Primary Electrical Compatibility Criteria:

Zener voltage nominal value: 30 V (exact match required)
Forward voltage: 900 mV @ 10 mA (maximum)
Reverse leakage current: ≤100 nA @ reference voltage
Operating temperature range: minimum -55°C to 125°C coverage

Secondary Compatibility Criteria:

Power dissipation rating: minimum 125 mW
Impedance: maximum 80 Ohms
RoHS3 compliance and MSL 1 rating

Package Considerations:

Primary package: 0402 (1006 Metric) / SOD-923F
Alternative package: SOD-882 / DFN1006-2 (acceptable with PCB layout verification)

Tolerance Variations:

CZRQR30VB-HF: ±3% tolerance
CZRQC30VB-HF: ±2.5% tolerance (tighter specification, direct equivalent)
BZX884 series: ±2% to ±5% tolerance (acceptable range for voltage regulation applications)

Substitute parts must satisfy all primary electrical criteria and maintain compliance certifications. Package differences require design review for PCB footprint compatibility.

Parameter Comparison

Parameter	CZRQR30VB-HF (Main)	CZRQC30VB-HF	BZX884-B30,315	BZX884-C30,315
Manufacturer	Comchip Technology	Comchip Technology	NXP Semiconductors	Nexperia USA Inc.
Voltage - Zener (Nom)	30 V	30 V	30 V	30 V
Tolerance	±3%	±2.5%	±2%	±5%
Power - Max	125 mW	125 mW	250 mW	250 mW
Impedance (Max)	78 Ohms	78 Ohms	80 Ohms	80 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 23 V	100 nA @ 23 V	50 nA @ 21 V	50 nA @ 21 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	0402 (1006 Metric)	0402 (1006 Metric)	SOD-882	SOD-882
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
AEC-Q100 Qualification	-	-	-	Yes

Engineering Selection Recommendations

CZRQC30VB-HF (Comchip Technology)

This part is the primary recommended substitute for CZRQR30VB-HF. Both components are manufactured by Comchip Technology with identical electrical specifications, operating temperature range, and 0402 package footprint. CZRQC30VB-HF maintains active product status with improved tolerance (±2.5% versus ±3%), ensuring superior voltage regulation accuracy. Packaging is Tape & Reel format with 747 units in stock. No PCB layout modifications are required. RoHS3 compliance and MSL 1 rating are maintained.

BZX884-B30,315 (NXP Semiconductors)

This NXP part provides electrical compatibility with enhanced power rating (250 mW versus 125 mW) and improved reverse leakage characteristics (50 nA @ 21 V). Operating temperature range extends to -65°C to 150°C. Package transition from 0402 to SOD-882 (DFN1006-2) requires PCB footprint verification. Tolerance specification of ±2% provides tighter voltage regulation. Active product status with 17,806 units in stock. RoHS3 compliant. Suitable for applications requiring higher thermal margin or extended temperature operation.

BZX884-C30,315 (Nexperia USA Inc.)

This automotive-qualified part (AEC-Q100) offers 250 mW power rating and ±5% tolerance. Package is SOD-882 (DFN1006-2), requiring PCB layout review. Operating temperature range is -65°C to 150°C. Reverse leakage is 50 nA @ 21 V. Active product status with 982 units in stock. RoHS3 and REACH compliant. Suitable for automotive applications or designs requiring extended thermal operating range.

Selection Criteria Summary:

Direct replacement (same package): CZRQC30VB-HF
Enhanced power rating: BZX884-B30,315 or BZX884-C30,315
Automotive applications: BZX884-C30,315
Extended temperature range: BZX884-B30,315 or BZX884-C30,315

All substitute parts maintain RoHS3 compliance, MSL 1 rating, and 30 V nominal Zener voltage specification.

Frequently Asked Questions (FAQ)

Q: Can CZRQC30VB-HF be used as a direct replacement for CZRQR30VB-HF?

A: Yes. Both parts are manufactured by Comchip Technology with identical 30 V Zener voltage, 125 mW power rating, and 0402 package footprint. CZRQC30VB-HF has tighter tolerance (±2.5% versus ±3%) and active product status. No design modifications are required.

Q: What is the primary difference between the Comchip and NXP substitute options?

A: Comchip CZRQC30VB-HF maintains the original 0402 package and 125 mW power rating. NXP BZX884 series parts offer doubled power rating (250 mW), extended temperature range (-65°C to 150°C), and SOD-882 package. Package change requires PCB footprint verification.

Q: Are the BZX884-B30,315 and BZX884-C30,315 interchangeable?

A: Both parts share identical electrical specifications (30 V, 250 mW, SOD-882 package, -65°C to 150°C). Primary difference is tolerance (±2% for B variant, ±5% for C variant) and automotive qualification (AEC-Q100 for C variant only). Selection depends on tolerance requirements and automotive compliance needs.

Q: Does package change from 0402 to SOD-882 affect circuit performance?

A: Package change does not affect electrical performance. However, SOD-882 (DFN1006-2) has different PCB footprint dimensions than 0402 (1006 Metric). PCB layout must be verified for pad spacing, trace routing, and thermal management compatibility before implementation.

Q: What compliance certifications are maintained across all substitute parts?

A: All substitute parts maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. BZX884-C30,315 additionally carries AEC-Q100 automotive qualification. REACH status is unaffected for all parts.

Q: Which substitute part has the lowest reverse leakage current?

A: BZX884-B30,315 and BZX884-C30,315 both specify 50 nA @ 21 V reverse leakage, compared to 100 nA @ 23 V for CZRQR30VB-HF and CZRQC30VB-HF. Lower leakage improves circuit efficiency in voltage regulation applications.

Q: Is tolerance specification critical for my application?

A: Tolerance importance depends on circuit design. Applications requiring precise voltage regulation benefit from tighter tolerance (±2% for BZX884-B30,315). General voltage clamping applications accept ±3% to ±5% tolerance. Verify circuit specifications before selection.

Q: What inventory availability should I consider?

A: CZRQC30VB-HF has 747 units in stock. BZX884-B30,315 has 17,806 units in stock. BZX884-C30,315 has 982 units in stock. Comchip parts have limited availability; NXP parts offer higher stock levels for volume production.

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