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CDZT2R6.8B Equivalent & Substitute Parts Reference
Part Overview
The Rohm Semiconductor CDZT2R6.8B is a Zener Diode, 6.8 V nominal breakdown, 100 mW maximum power, surface-mount, VMN2 (SOD-923) package. The device features ±2% voltage tolerance and a reverse leakage of 500 nA at 3.5 V. It is RoHS3 compliant, suitable for automated assembly, and rated for -55°C to +150°C operating temperature. As per the manufacturer, the product status is “Not For New Designs,” making it necessary to identify parametric, packaging, and compliance-equivalent alternatives for ongoing designs or maintenance.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CDZT2R6.8B |
| Category | Diodes, Zener |
| Voltage - Zener (Nom) | 6.8 V |
| Tolerance | ±2% |
| Power - Max | 100 mW |
| Impedance (Max) | 40 Ohms |
| Current - Reverse Leakage @ Vr | 500 nA @ 3.5 V |
| Operating Temperature | -55°C ~ 150°C |
| Package / Case | 2-SMD, Flat Lead |
| Supplier Device Package | VMN2 (SOD-923) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| Product Status | Not For New Designs |
Substitute Part Grouping Explanation
Substitute and equivalent parts are selected strictly by the following parameters: Zener voltage (6.8 V nominal), voltage tolerance (±2%), maximum power dissipation (≥100 mW), maximum impedance (≤40 Ohms), reverse leakage current at test voltage (≤500 nA @ 3.5 V), operating temperature range, surface-mount compatibility (SOD-923/VMN2), RoHS3/REACH compliance, and MSL 1 rating. Only parts matching all these parameters are listed. Packaging and supplier device package compatibility are included for solder footprint equivalence.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Voltage - Zener (Nom) | Tolerance | Power - Max | Impedance (Max) | Current - Reverse Leakage @ Vr | Operating Temperature | Package / Case | Supplier Device Package | Mounting Type | RoHS Status | MSL | REACH Status | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CDZT2R6.8B | Rohm Semiconductor | 6.8 V | ±2% | 100 mW | 40 Ohms | 500 nA @ 3.5 V | -55°C ~ 150°C | 2-SMD, Flat Lead | VMN2 (SOD-923) | Surface Mount | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | Not For New Designs |
| CDZT2RA6.8B | Rohm Semiconductor | 6.8 V | ±2% | 100 mW | 40 Ohms | 500 nA @ 3.5 V | -55°C ~ 150°C | 2-SMD, Flat Lead | VMN2 (SOD-923) | Surface Mount | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | Active |
| NZ9F6V8ST5G | onsemi | 6.8 V | ±2% | 250 mW | 40 Ohms | 500 nA @ 3.5 V | -65°C ~ 150°C (TJ) | SOD-923 | SOD-923 | Surface Mount | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | Active |
Engineering Selection Recommendations
Based solely on provided product status, compliance, and certifications, the Rohm Semiconductor CDZT2R6.8B is not recommended for new designs. Both CDZT2RA6.8B (Rohm Semiconductor) and NZ9F6V8ST5G (onsemi) are marked as “Active” products. All listed substitutes retain ROHS3 compliance, REACH unaffected status, MSL 1 rating, and meet necessary electrical and mechanical criteria.
Frequently Asked Questions (FAQ)
Q1: What are the critical parameters for selecting a Zener diode substitute for CDZT2R6.8B?
A1: Critical parameters include Zener voltage (6.8 V), voltage tolerance (±2%), maximum power dissipation, impedance, reverse leakage current at a specified voltage, operating temperature range, surface-mount packaging (SOD-923 or VMN2), and compliance status (RoHS3, REACH, MSL 1).
Q2: Are the substitute parts physically compatible with the main part’s PCB footprint?
A2: All listed substitutes are in the SOD-923 or VMN2 (SOD-923) package and are surface mount, ensuring package and footprint compatibility.
Q3: How does the product status affect substitute selection?
A3: Substitute parts are chosen with active product status when the main part is listed as “Not For New Designs” to ensure suitability for ongoing and new design requirements.
Q4: Is it necessary to verify compliance certifications when substituting?
A4: Only parts with corresponding ROHS3 compliance, REACH unaffected status, and MSL 1 rating are listed, matching the compliance characteristics of the main part.
Q5: Do the substitute parts differ in their maximum power rating?
A5: Both substitute parts meet or exceed the main part’s maximum power rating; NZ9F6V8ST5G features a higher maximum power (250 mW) which does not restrict substitution based on provided parameters.
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