CZRER36VB-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The CZRER36VB-HF is a 36 V, 150 mW Zener diode manufactured by Comchip Technology in a 0503/SOD-723F surface mount package. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity. The part maintains ROHS3 compliance and operates across the industrial temperature range of -55°C to 125°C. Substitute parts must maintain identical electrical specifications while accommodating alternative packaging formats suitable for current manufacturing processes.

Substiute Parts

CZRER36VB-HF

Comchip TechnologyIn Stock: 865CZRER36VB-HF Datasheet

Current PartRFQ

CZRUR36VB-HF

Comchip TechnologyIn Stock: 756CZRUR36VB-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CZRER36VB-HF is determined by strict equivalence across the following electrical parameters:

Critical Electrical Parameters (Must Match):

• Zener voltage: 36 V nominal
• Tolerance: ±2%
• Maximum power dissipation: 150 mW
• Impedance (maximum): 95 Ohms
• Reverse leakage current: 100 nA @ 27 V
• Forward voltage: 900 mV @ 10 mA maximum
• Operating temperature range: -55°C to 125°C

Acceptable Variation:

• Package format: Alternative surface mount packages (0603/SOD-523F acceptable as mechanical substitute)
• Product status: Active status preferred over obsolete

The CZRUR36VB-HF qualifies as a direct electrical substitute, maintaining all specified electrical parameters while offering an active product status and alternative packaging in 0603/SOD-523F format.

Parameter Comparison

Engineering Selection Recommendations

The CZRUR36VB-HF is the qualified substitute for the obsolete CZRER36VB-HF based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters match exactly, including zener voltage, tolerance, power rating, impedance, leakage current, and forward voltage specifications. The component operates identically within the specified temperature range.

Compliance Status: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current manufacturing environments.

Product Availability: The CZRUR36VB-HF holds active product status with 668 units in stock, providing supply continuity compared to the obsolete CZRER36VB-HF.

Package Consideration: The substitute uses 0603/SOD-523F packaging instead of 0503/SOD-723F. This represents a larger footprint suitable for standard surface mount assembly processes. PCB layout modifications are required to accommodate the different package dimensions.

Tape & Reel Packaging: The substitute is supplied in Tape & Reel format, standard for high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can CZRUR36VB-HF replace CZRER36VB-HF in existing designs without circuit modification?

A: Electrical replacement is direct. However, PCB layout must be modified to accommodate the 0603 package footprint instead of 0503. The component performs identically in the circuit.

Q: What is the primary difference between these two parts?

A: The main difference is package format. CZRER36VB-HF uses 0503/SOD-723F (smaller), while CZRUR36VB-HF uses 0603/SOD-523F (larger). All electrical specifications are identical.

Q: Why is the original part listed as obsolete?

A: CZRER36VB-HF is classified as obsolete, indicating discontinued manufacturing. The CZRUR36VB-HF maintains active status and serves as the current production equivalent.

Q: Are there any temperature or voltage derating considerations when switching to the substitute?

A: No. Both parts operate across -55°C to 125°C with identical voltage and power specifications. No derating adjustments are necessary.

Q: Does the substitute meet the same compliance standards?

A: Yes. CZRUR36VB-HF maintains ROHS3 compliance and REACH unaffected status, identical to the original part.

Q: What is the impedance specification, and does it affect circuit performance?

A: Maximum impedance is 95 Ohms for both parts. This specification defines the dynamic resistance of the zener diode and is identical between the main part and substitute, ensuring equivalent circuit behavior.

Q: Can I use the 0603 package in space-constrained applications?

A: The 0603 package is larger than 0503. Space constraints must be evaluated during PCB redesign. If space is critical, alternative 36 V zener diodes in 0503 packaging from other manufacturers may be required.