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CD214C-T12CALF Equivalent & Substitute Parts
Part Overview
The CD214C-T12CALF 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 features a 12V reverse standoff voltage with a 19.9V maximum clamping voltage and 75.3A peak pulse current capability in a DO-214AB (SMC) package. 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-T12CALF |
| Manufacturer | Bourns Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Bidirectional Channels | 1 |
| Voltage - Reverse Standoff (Typ) | 12V |
| Voltage - Breakdown (Min) | 13.3V |
| Voltage - Clamping (Max) @ Ipp | 19.9V |
| Current - Peak Pulse (10/1000µs) | 75.3A |
| Power - Peak Pulse | 1500W |
| Package / Case | DO-214AB, SMC |
| 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 for the CD214C-T12CALF is determined by strict equivalence across the following critical parameters:
- Voltage - Reverse Standoff (Typ): 12V
- Voltage - Breakdown (Min): 13.3V
- Voltage - Clamping (Max) @ Ipp: 19.9V
- Package / Case: DO-214AB (SMC)
- Mounting Type: Surface Mount
- Bidirectional Channels: 1
- Type: Zener
Substitute parts are grouped into two categories:
Direct Equivalents maintain identical electrical specifications including peak pulse current (75.3A ± 0.08A) and peak pulse power (1500W). These parts are pin-compatible and functionally interchangeable without circuit modification.
Similar Alternatives maintain voltage specifications and package compatibility but differ in peak pulse current and power dissipation capability. These parts are suitable for applications where higher transient energy absorption is acceptable or beneficial, provided thermal management and board layout remain compatible with the DO-214AB footprint.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff | Voltage - Breakdown (Min) | Voltage - Clamping (Max) | Current - Peak Pulse | Power - Peak Pulse | Package | Operating Temperature | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| CD214C-T12CALF | Bourns Inc. | 12V | 13.3V | 19.9V | 75.3A | 1500W | DO-214AB (SMC) | -55°C ~ 150°C | Obsolete | ROHS3 Compliant |
| SMCJ12CA | Meritek | 12V | 13.3V | 19.9V | 75.38A | 1500W | DO-214AB (SMC) | -55°C ~ 150°C | Active | ROHS3 Compliant |
| SMCJ12CA-HR | Littelfuse Inc. | 12V | 13.3V | 19.9V | 75.4A | 1500W | DO-214AB (SMC) | -65°C ~ 150°C | Active | ROHS3 Compliant |
| SMCJ12CA-HRA | Littelfuse Inc. | 12V | 13.3V | 19.9V | 75.4A | 1500W | DO-214AB (SMC) | -65°C ~ 150°C | Active | ROHS3 Compliant |
| SMCJ12CA-HRAT7 | Littelfuse Inc. | 12V | 13.3V | 19.9V | 75.4A | 1500W | DO-214AB (SMC) | -65°C ~ 150°C | Active | ROHS3 Compliant |
| 5.0SMDJ12CA | MDE Semiconductor Inc | 12V | 13.3V | 19.9V | 252A | 5000W | DO-214AB (SMC) | -55°C ~ 150°C | Active | ROHS3 Compliant |
| 5.0SMDJ12CA-T7 | Littelfuse | 12V | 13.3V | 19.9V | 252A | 5000W | DO-214AB (SMC) | -65°C ~ 150°C | Active | ROHS3 Compliant |
| SMDJ12CA | Alpha & Omega Semiconductor Inc. | 12V | 13.3V | 19.9V | 150.8A | 3000W | DO-214AB (SMC) | -55°C ~ 150°C | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Equivalent Selection:
SMCJ12CA (Meritek) is the primary direct equivalent, offering identical electrical specifications with peak pulse current of 75.38A and 1500W power dissipation. This part is in active production status with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and supply chain stability.
SMCJ12CA-HR, SMCJ12CA-HRA, and SMCJ12CA-HRAT7 (all Littelfuse Inc.) are functionally equivalent alternatives with marginally higher peak pulse current (75.4A) and extended lower operating temperature limit (-65°C vs. -55°C). These parts are suitable for applications requiring enhanced low-temperature performance while maintaining identical voltage protection characteristics.
Higher Power Alternative Selection:
5.0SMDJ12CA (MDE Semiconductor Inc.) and 5.0SMDJ12CA-T7 (Littelfuse) provide 252A peak pulse current and 5000W power dissipation, representing a 3.35x increase in transient energy absorption capability. These parts maintain identical voltage specifications and DO-214AB package compatibility. Selection is appropriate for applications with higher transient stress or where additional design margin is required.
SMDJ12CA (Alpha & Omega Semiconductor Inc.) offers intermediate performance with 150.8A peak pulse current and 3000W power dissipation, providing a 2x increase over the original specification while maintaining full voltage equivalence.
All substitute parts maintain ROHS3 compliance and are in active production status, ensuring regulatory compliance and procurement continuity.
Frequently Asked Questions (FAQ)
Q: Can SMCJ12CA directly replace CD214C-T12CALF without circuit modification?
A: Yes. SMCJ12CA maintains identical voltage specifications (12V standoff, 13.3V breakdown, 19.9V clamping) and peak pulse current (75.38A), with matching DO-214AB package and surface mount configuration. No circuit changes are required.
Q: What is the difference between direct equivalents and higher-power alternatives?
A: Direct equivalents (SMCJ12CA series) maintain the original 75.3A peak pulse current and 1500W power dissipation. Higher-power alternatives (5.0SMDJ12CA series and SMDJ12CA) increase transient energy absorption capability to 252A/5000W and 150.8A/3000W respectively, while preserving voltage protection characteristics. Selection depends on application transient stress levels.
Q: Are all substitute parts compatible with the original DO-214AB footprint?
A: Yes. All listed substitute parts use the DO-214AB (SMC) package with identical pin configuration and land pattern, ensuring direct PCB footprint compatibility.
Q: What is the significance of the -65°C lower operating temperature limit on Littelfuse parts?
A: Littelfuse SMCJ12CA-HR, SMCJ12CA-HRA, and SMCJ12CA-HRAT7 extend the lower operating temperature from -55°C to -65°C. This provides enhanced performance margin for applications operating in extreme cold environments. For standard applications within -55°C to 150°C range, this difference is not functionally significant.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring regulatory compatibility with current environmental standards.
Q: What packaging options are available for these TVS diodes?
A: All substitute parts are supplied in DO-214AB (SMC) surface mount package. Littelfuse variants (SMCJ12CA-HR, SMCJ12CA-HRA, SMCJ12CA-HRAT7, 5.0SMDJ12CA-T7) are available in Tape & Reel (TR) packaging for automated assembly. Meritek SMCJ12CA and MDE 5.0SMDJ12CA are available in standard packaging configurations.
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