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CD214B-T30CALF Equivalent & Substitute Parts
Part Overview
The CD214B-T30CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. This bidirectional zener diode operates with a 30V reverse standoff voltage and provides 48.4V clamping at peak pulse current. The component is packaged in DO-214AA (SMB) format and is rated for 600W peak pulse power dissipation across an operating temperature range of -55°C to 150°C.
The CD214B-T30CALF is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications requiring 30V TVS protection.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CD214B-T30CALF |
| Manufacturer | Bourns Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Bidirectional Channels | 1 |
| Voltage - Reverse Standoff (Typ) | 30V |
| Voltage - Breakdown (Min) | 33.3V |
| Voltage - Clamping (Max) @ Ipp | 48.4V |
| Current - Peak Pulse (10/1000µs) | 12.4A |
| Power - Peak Pulse | 600W |
| Package / Case | DO-214AA, SMB |
| Mounting Type | Surface Mount |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the CD214B-T30CALF is determined by the following critical parameters:
- Voltage - Reverse Standoff (Typ): 30V nominal
- Voltage - Clamping (Max) @ Ipp: 48.4V maximum
- Current - Peak Pulse (10/1000µs): 12.4A minimum
- Power - Peak Pulse: 600W
- Package / Case: DO-214AA (SMB)
- Mounting Type: Surface Mount
- Bidirectional Channels: 1
Substitute parts are classified into two categories:
Direct Equivalents: Parts with identical electrical specifications (30V standoff, 48.4V clamping, 12.4A peak pulse current) and active product status. These provide pin-for-pin and functional compatibility.
Similar Alternatives: Parts with comparable but not identical electrical specifications, typically differing in standoff voltage (25.6V or 28.2V) or clamping voltage (41.4V or 45.7V). These require circuit-level evaluation to confirm suitability for the application.
Parameter Comparison
| Parameter | CD214B-T30CALF (Main) | SMBJ30CA (MDD) | P6SMB30CA-M3/52 (Vishay) | P6SMB33CA-M3/52 (Vishay) | SM6T30CA-M3/52 (Vishay) |
|---|---|---|---|---|---|
| Manufacturer | Bourns Inc. | MDD | Vishay | Vishay | Vishay |
| Product Status | Obsolete | Active | Active | Active | Active |
| Voltage - Reverse Standoff (Typ) | 30V | 30V | 25.6V | 28.2V | 25.6V |
| Voltage - Breakdown (Min) | 33.3V | 33.3V | 28.5V | 31.4V | 28.5V |
| Voltage - Clamping (Max) @ Ipp | 48.4V | 48.4V | 41.4V | 45.7V | 41.5V |
| Current - Peak Pulse (10/1000µs) | 12.4A | 12.4A | 14.5A | 13.1A | 14.5A |
| Power - Peak Pulse | 600W | 600W | 600W | 600W | 600W |
| Package / Case | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB |
| Operating Temperature | -55°C ~ 150°C | -50°C ~ 150°C | -65°C ~ 150°C | -65°C ~ 150°C | -65°C ~ 150°C |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Direct Equivalent Selection:
SMBJ30CA (MDD) is the primary direct equivalent to CD214B-T30CALF. This part maintains identical electrical specifications: 30V reverse standoff voltage, 48.4V clamping voltage, and 12.4A peak pulse current. SMBJ30CA is active product status with ROHS3 compliance and MSL 1 rating. The operating temperature range of -50°C to 150°C covers the majority of industrial applications, with a 5°C reduction at the lower bound compared to the original part.
Alternative Selection Criteria:
Vishay P6SMB and SM6T series parts (P6SMB30CA-M3/52, P6SMB30CA-M3/5B, SM6T30CA-M3/52, SM6T30CA-M3/5B) provide active product status and extended operating temperature range (-65°C to 150°C). These parts differ in standoff voltage (25.6V) and clamping voltage (41.4V to 41.5V), requiring circuit-level verification for applications with strict voltage tolerance requirements.
Vishay P6SMB33CA series (P6SMB33CA-M3/52, P6SMB33CA-M3/5B) offers standoff voltage of 28.2V and clamping voltage of 45.7V, providing closer electrical alignment to the original specification while maintaining active product status and extended temperature range.
All substitute parts are ROHS3 compliant with MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements.
Frequently Asked Questions (FAQ)
Q: Can SMBJ30CA directly replace CD214B-T30CALF without circuit modification?
A: Yes. SMBJ30CA provides identical electrical specifications across all critical parameters: 30V reverse standoff, 48.4V clamping voltage, 12.4A peak pulse current, and 600W power rating. Both parts use DO-214AA (SMB) packaging with identical pinout and footprint. No circuit modification is required.
Q: What is the difference between direct equivalents and similar alternatives?
A: Direct equivalents (SMBJ30CA) match all electrical specifications of the original part. Similar alternatives (Vishay P6SMB and SM6T series) have lower standoff voltages (25.6V to 28.2V) and lower clamping voltages (41.4V to 45.7V). Similar alternatives require circuit-level evaluation to confirm suitability for the specific application voltage requirements.
Q: Are all substitute parts RoHS compliant?
A: Yes. All listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original CD214B-T30CALF.
Q: What is the operating temperature difference between the original part and substitutes?
A: CD214B-T30CALF operates from -55°C to 150°C. SMBJ30CA operates from -50°C to 150°C (5°C reduction at lower bound). Vishay alternatives (P6SMB and SM6T series) operate from -65°C to 150°C (10°C extension at lower bound). Select based on application temperature requirements.
Q: Can I use P6SMB33CA as a substitute for CD214B-T30CALF?
A: P6SMB33CA has different electrical specifications: 28.2V standoff voltage and 45.7V clamping voltage compared to the original 30V and 48.4V. This part is suitable only if the application circuit can tolerate lower voltage thresholds. Circuit-level verification is required before substitution.
Q: Are there packaging or lead-form differences between substitute parts?
A: All substitute parts use DO-214AA (SMB) surface mount packaging with identical footprint and pinout. Packaging differences exist only in supplier delivery format (Tape & Box vs. Tape & Reel), which does not affect component functionality or PCB assembly compatibility.
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