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CD214C-T110ALF Equivalent & Substitute Parts
Part Overview
The CD214C-T110ALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. This unidirectional Zener diode operates with a 110V reverse standoff voltage and provides 177V maximum clamping voltage at peak pulse current. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CD214C-T110ALF |
| Manufacturer | Bourns Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Unidirectional Channels | 1 |
| Voltage - Reverse Standoff (Typ) | 110V |
| Voltage - Breakdown (Min) | 122V |
| Voltage - Clamping (Max) @ Ipp | 177V |
| Current - Peak Pulse (10/1000µs) | 8.4A |
| Power - Peak Pulse | 1500W |
| Package / Case | DO-214AB, SMC |
| Mounting Type | Surface Mount |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the CD214C-T110ALF is determined by strict equivalence of the following electrical and mechanical parameters:
Critical Matching Parameters:
- Voltage - Reverse Standoff (Typ): 110V
- Voltage - Breakdown (Min): 122V
- Voltage - Clamping (Max) @ Ipp: 177V
- Package / Case: DO-214AB, SMC
- Mounting Type: Surface Mount
- Unidirectional Channels: 1
Direct Equivalents maintain identical peak pulse current (8.4A) and power dissipation (1500W):
- SMCJ110A (Fairchild Semiconductor) - Active status, identical electrical specifications
Similar Substitutes provide equivalent voltage protection but with higher current handling capability (17A to 28.3A) and increased power dissipation (3000W to 5000W). These parts are suitable where the application can accommodate higher surge current capacity without circuit modification:
- 5.0SMDJ110A (MDE Semiconductor Inc.) - 28.3A peak pulse, 5000W power
- 5.0SMDJ110A-T7 (Littelfuse Inc.) - 28.3A peak pulse, 5000W power
- SMCJ110A-HR (Littelfuse Inc.) - 8.5A peak pulse, 1500W power
- SMCJ110A-HRA (Littelfuse Inc.) - 8.5A peak pulse, 1500W power
- SMCJ110A-HRAT7 (Littelfuse Inc.) - 8.5A peak pulse, 1500W power
- SMCJ110A-TP (Micro Commercial Co) - 8.5A peak pulse, 1500W power
- SMDJ110A (Alpha & Omega Semiconductor Inc.) - 17A peak pulse, 3000W power
All substitute parts maintain the same package format (DO-214AB, SMC), surface mount configuration, and voltage specifications required for direct circuit board replacement.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Breakdown (Min) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Package / Case | Operating Temperature | Product Status |
|---|---|---|---|---|---|---|---|---|---|
| CD214C-T110ALF | Bourns Inc. | 110V | 122V | 177V | 8.4A | 1500W | DO-214AB, SMC | -55°C ~ 150°C | Obsolete |
| SMCJ110A | Fairchild Semiconductor | 110V | 122V | 177V | 8.4A | 1500W | DO-214AB, SMC | -55°C ~ 150°C | Active |
| 5.0SMDJ110A | MDE Semiconductor Inc | 110V | 122V | 177V | 28.3A | 5000W | DO-214AB, SMC | -55°C ~ 150°C | Active |
| 5.0SMDJ110A-T7 | Littelfuse Inc. | 110V | 122V | 177V | 28.3A | 5000W | DO-214AB, SMC | -65°C ~ 150°C | Active |
| SMCJ110A-HR | Littelfuse Inc. | 110V | 122V | 177V | 8.5A | 1500W | DO-214AB, SMC | -65°C ~ 150°C | Active |
| SMCJ110A-HRA | Littelfuse Inc. | 110V | 122V | 177V | 8.5A | 1500W | DO-214AB, SMC | -65°C ~ 150°C | Active |
| SMCJ110A-HRAT7 | Littelfuse Inc. | 110V | 122V | 177V | 8.5A | 1500W | DO-214AB, SMC | -65°C ~ 150°C | Active |
| SMCJ110A-TP | Micro Commercial Co | 110V | 122V | 177V | 8.5A | 1500W | DO-214AB, SMC | -55°C ~ 175°C | Active |
| SMDJ110A | Alpha & Omega Semiconductor Inc. | 110V | 122V | 177V | 17A | 3000W | DO-214AB, SMC | -55°C ~ 150°C | Active |
Engineering Selection Recommendations
Primary Recommendation: SMCJ110A (Fairchild Semiconductor)
The SMCJ110A provides direct electrical and mechanical equivalence to the obsolete CD214C-T110ALF. This part maintains identical voltage specifications (110V reverse standoff, 122V breakdown minimum, 177V clamping maximum), peak pulse current (8.4A), and power dissipation (1500W). The SMCJ110A is in active production status with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and regulatory compliance.
Alternative Selections Based on Application Requirements:
For applications requiring enhanced surge current capacity without circuit redesign, the 5.0SMDJ110A-T7 (Littelfuse Inc.) or 5.0SMDJ110A (MDE Semiconductor Inc.) provide 28.3A peak pulse current and 5000W power dissipation while maintaining identical voltage protection parameters. These parts are suitable for high-energy transient environments.
For moderate surge current enhancement, the SMDJ110A (Alpha & Omega Semiconductor Inc.) offers 17A peak pulse current and 3000W power dissipation as an intermediate option.
The SMCJ110A-TP (Micro Commercial Co) extends the upper operating temperature to 175°C, suitable for applications in elevated thermal environments.
All recommended substitutes maintain the DO-214AB (SMC) surface mount package format, ensuring direct board-level compatibility without layout modifications.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute part with higher peak pulse current than the original CD214C-T110ALF?
A: Yes. Higher peak pulse current ratings (17A, 28.3A) indicate greater surge handling capability. These parts provide equivalent voltage protection (110V standoff, 177V clamping) and are suitable for direct substitution. The circuit will experience no adverse effects from this increased capability.
Q: Are all substitute parts compatible with the same PCB footprint?
A: Yes. All listed substitute parts use the DO-214AB (SMC) package format, which is mechanically and electrically identical to the original CD214C-T110ALF. No PCB layout modifications are required.
Q: What is the difference between direct equivalents and similar substitutes?
A: Direct equivalents (SMCJ110A) match the original part's peak pulse current (8.4A) and power dissipation (1500W) exactly. Similar substitutes provide the same voltage protection but with higher current or power ratings, offering enhanced surge protection capability.
Q: Does the operating temperature range affect substitution compatibility?
A: Operating temperature range does not prevent substitution. Parts with extended temperature ranges (such as SMCJ110A-TP at -55°C to 175°C) are suitable replacements for applications within the original temperature specification (-55°C to 150°C). Select extended-range parts only if your application requires operation outside the original temperature limits.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing and use.
Q: What is the significance of the "HR" and "HRA" designations in Littelfuse part numbers?
A: The HR and HRA designations indicate specific product variants within the Littelfuse SMCJ series. These variants maintain identical electrical specifications (110V standoff, 177V clamping, 8.5A peak pulse) and are functionally equivalent for substitution purposes.
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