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CD214B-T54CALF Equivalent & Substitute Parts
Part Overview
The CD214B-T54CALF 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 54V reverse standoff voltage and provides 87.1V clamping at peak pulse current. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued circuit protection functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CD214B-T54CALF |
| Manufacturer | Bourns Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Package / Case | DO-214AA, SMB |
| Voltage - Reverse Standoff (Typ) | 54V |
| Voltage - Breakdown (Min) | 60V |
| Voltage - Clamping (Max) @ Ipp | 87.1V |
| Current - Peak Pulse (10/1000µs) | 6.9A |
| Power - Peak Pulse | 600W |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Bidirectional Channels | 1 |
| Applications | General Purpose |
| RoHS Status | ROHS3 Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the CD214B-T54CALF is determined by strict equivalence across the following critical parameters:
Direct Electrical Equivalents (identical specifications):
- Voltage - Reverse Standoff (Typ): 54V
- Voltage - Breakdown (Min): 60V
- Voltage - Clamping (Max) @ Ipp: 87.1V
- Current - Peak Pulse (10/1000µs): 6.9A
- Power - Peak Pulse: 600W
- Package / Case: DO-214AA, SMB
- Bidirectional Channels: 1
- Type: Zener
Similar Electrical Alternatives (minor parameter variations within acceptable tolerance):
- Voltage - Reverse Standoff (Typ): 51V to 58.1V
- Voltage - Clamping (Max) @ Ipp: 82.4V to 93.6V
- Current - Peak Pulse (10/1000µs): 6.4A to 7.3A
- Package / Case: DO-214AA, SMB (maintained)
- Power - Peak Pulse: 600W (maintained)
All substitute parts maintain surface mount DO-214AA (SMB) packaging and 600W peak pulse power rating, ensuring mechanical and thermal compatibility.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Voltage - Reverse Standoff (Typ) | Voltage - Breakdown (Min) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Operating Temperature | Package / Case |
|---|---|---|---|---|---|---|---|---|---|
| CD214B-T54CALF | Bourns Inc. | Obsolete | 54V | 60V | 87.1V | 6.9A | 600W | -55°C ~ 150°C | DO-214AA, SMB |
| SMBJ54CA | Fairchild Semiconductor | Active | 54V | 60V | 87.1V | 6.9A | 600W | -55°C ~ 150°C | DO-214AA, SMB |
| SMBJ54CA-TP | Micro Commercial Co | Active | 54V | 60V | 87.1V | 6.9A | 600W | -55°C ~ 175°C | DO-214AA, SMB |
| TV06B540JB-G | Comchip Technology | Active | 54V | 60V | 87.1V | 6.89A | 600W | - | DO-214AA, SMB |
| SMBJ51CA | MDD | Active | 51V | 56.7V | 82.4V | 7.3A | 600W | -50°C ~ 150°C | DO-214AA, SMB |
| SMBJ51CA-HR | Littelfuse Inc. | Active | 51V | 56.7V | 82.4V | 7.3A | 600W | -65°C ~ 150°C | DO-214AA, SMB |
| TPSMB62CA | Littelfuse Inc. | Active | 53V | 58.9V | 85V | 7.2A | 600W | -65°C ~ 175°C | DO-214AA, SMB |
| TPSMB68CA | Littelfuse Inc. | Active | 58.1V | 64.6V | 92V | 6.6A | 600W | -65°C ~ 175°C | DO-214AA, SMB |
| SMBJ58CA | Good-Ark Semiconductor | Active | 58V | 64.4V | 93.6V | 6.4A | 600W | -55°C ~ 150°C | DO-214AA, SMB |
Engineering Selection Recommendations
Direct Replacement (Identical Specifications):
SMBJ54CA (Fairchild Semiconductor) is the primary direct equivalent, offering identical electrical parameters and active product status. This part provides immediate functional replacement with no circuit redesign required.
SMBJ54CA-TP (Micro Commercial Co) serves as an alternative direct equivalent with extended upper operating temperature to 175°C, providing enhanced thermal margin for applications operating near the original 150°C limit.
TV06B540JB-G (Comchip Technology) maintains specification equivalence with 6.89A peak pulse current, functionally interchangeable within standard circuit tolerances.
Alternative Selection (Similar Specifications):
TPSMB62CA (Littelfuse Inc.) operates at 53V reverse standoff with 85V clamping, representing a 1V lower standoff voltage with proportionally reduced clamping voltage. This part qualifies as AEC-Q101 automotive-grade and extends operating temperature to 175°C, suitable for applications where slightly lower voltage thresholds are acceptable.
SMBJ51CA and SMBJ51CA-HR (MDD and Littelfuse Inc.) operate at 51V reverse standoff with 82.4V clamping, representing a 3V reduction from the original specification. These parts are suitable only where circuit design permits lower protection thresholds.
TPSMB68CA (Littelfuse Inc.) and SMBJ58CA (Good-Ark Semiconductor) operate at higher voltage levels (58.1V and 58V respectively) and are not suitable for direct replacement of the 54V specification.
All recommended substitutes maintain ROHS3 compliance and DO-214AA (SMB) surface mount packaging.
Frequently Asked Questions (FAQ)
Q: Can SMBJ54CA directly replace CD214B-T54CALF without circuit modification?
A: Yes. SMBJ54CA maintains identical voltage ratings (54V standoff, 87.1V clamping), current specifications (6.9A peak pulse), and power rating (600W). The DO-214AA (SMB) package is mechanically identical. No circuit redesign is required.
Q: What is the difference between SMBJ54CA and SMBJ54CA-TP?
A: Both parts are electrically identical with 54V standoff and 87.1V clamping. SMBJ54CA-TP extends the upper operating temperature from 150°C to 175°C, providing additional thermal headroom for high-temperature applications. Packaging remains DO-214AA (SMB).
Q: Can SMBJ51CA replace CD214B-T54CALF?
A: SMBJ51CA operates at 51V reverse standoff and 82.4V clamping, representing a 3V reduction from the original 54V specification. This part is suitable only if circuit design permits lower protection voltage thresholds. Direct substitution without circuit analysis is not recommended.
Q: What does "Tape & Reel (TR)" packaging mean?
A: Tape & Reel packaging indicates the component is supplied on continuous carrier tape wound on a reel, suitable for automated assembly processes. The actual component package remains DO-214AA (SMB). This affects procurement and assembly logistics but not electrical or mechanical compatibility.
Q: Are TPSMB62CA and TPSMB68CA suitable replacements?
A: TPSMB62CA (53V standoff, 85V clamping) represents a 1V reduction and may be acceptable depending on circuit margin analysis. TPSMB68CA (58.1V standoff, 92V clamping) operates at higher voltage levels and is not suitable for direct replacement of the 54V specification. Both parts are AEC-Q101 automotive-qualified.
Q: What is the significance of RoHS3 compliance?
A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. All listed substitutes maintain ROHS3 compliance, ensuring regulatory compatibility with the original part.
Q: Does operating temperature range affect substitution suitability?
A: Operating temperature range affects suitability only if the application operates near the temperature limits. CD214B-T54CALF operates -55°C to 150°C. SMBJ54CA-TP extends to 175°C, providing additional margin. SMBJ51CA-HR extends to -65°C, providing lower temperature margin. Select based on actual application requirements.
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