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CD214C-T75CALF Equivalent & Substitute Parts
Part Overview
The CD214C-T75CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., classified as a Zener-type bidirectional TVS in the DO-214AB (SMC) surface mount package. This component is rated for 75V reverse standoff voltage with a 121V maximum clamping voltage and 12.4A peak pulse current, designed for general-purpose transient voltage suppression applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CD214C-T75CALF |
| Manufacturer | Bourns Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Package / Case | DO-214AB, SMC |
| Voltage - Reverse Standoff (Typ) | 75V |
| Voltage - Breakdown (Min) | 83.3V |
| Voltage - Clamping (Max) @ Ipp | 121V |
| Current - Peak Pulse (10/1000µs) | 12.4A |
| Power - Peak Pulse | 1500W (1.5kW) |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the CD214C-T75CALF is determined by strict electrical and mechanical parameter matching within the TVS diode category. The following criteria establish valid substitution:
Primary Substitution Criteria:
- Voltage - Reverse Standoff (Typ): 75V
- Voltage - Clamping (Max) @ Ipp: 121V
- Voltage - Breakdown (Min): 83.3V
- Package / Case: DO-214AB, SMC (surface mount)
- Mounting Type: Surface Mount
- Type: Zener, Bidirectional
- Bidirectional Channels: 1
Secondary Compatibility Factors:
- Current - Peak Pulse (10/1000µs): 12.4A minimum (higher ratings acceptable for enhanced performance margin)
- Power - Peak Pulse: 1500W minimum (higher ratings acceptable)
- Operating Temperature Range: -55°C ~ 150°C minimum coverage (extended ranges acceptable)
- RoHS3 Compliance and MSL Level 1 preferred for manufacturing continuity
Substitute parts are grouped into two categories: Direct Equivalents (matching all primary parameters exactly) and Similar Parts (matching voltage and package specifications with enhanced current or power ratings).
Parameter Comparison
| Part Number | Manufacturer | Product Status | Reverse Standoff (V) | Breakdown Min (V) | Clamping Max (V) | Peak Pulse Current (A) | Peak Pulse Power (W) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|
| CD214C-T75CALF | Bourns Inc. | Obsolete | 75 | 83.3 | 121 | 12.4 | 1500 | -55 ~ 150 | DO-214AB, SMC |
| SMCJ75CA | Fairchild Semiconductor | Active | 75 | 83.3 | 121 | 12.4 | 1500 | -55 ~ 150 | DO-214AB, SMC |
| 5.0SMDJ75CA | MDE Semiconductor Inc | Active | 75 | 83.3 | 121 | 41.4 | 5000 | -55 ~ 150 | DO-214AB, SMC |
| 5.0SMLJ75CA-TP | Micro Commercial Co | Active | 75 | 83.3 | 121 | 41.4 | 5000 | -55 ~ 175 | DO-214AB, SMC |
| SMC3K75CA-M3/57 | Vishay General Semiconductor - Diodes Division | Active | 75 | 83.3 | 121 | 24.8 | 3000 | -55 ~ 150 | DO-214AB, SMC |
| SMCJ75CA-HR | Littelfuse | Active | 75 | 83.3 | 121 | 12.4 | 1500 | -65 ~ 150 | DO-214AB, SMC |
| SMCJ75CA-HRA | Littelfuse Inc. | Active | 75 | 83.3 | 121 | 12.4 | 1500 | -65 ~ 150 | DO-214AB, SMC |
| SMCJ75CA-HRAT7 | Littelfuse Inc. | Active | 75 | 83.3 | 121 | 12.4 | 1500 | -65 ~ 150 | DO-214AB, SMC |
| SMCJ75CA-TP | Micro Commercial Co | Active | 75 | 83.3 | 121 | 12.4 | 1500 | -55 ~ 175 | DO-214AB, SMC |
Engineering Selection Recommendations
Direct Equivalent (Preferred for Drop-In Replacement):
SMCJ75CA (Fairchild Semiconductor) is the primary direct equivalent, matching all electrical parameters and operating temperature range of the CD214C-T75CALF. This part is in active production status with ROHS3 compliance and MSL Level 1 rating, ensuring manufacturing continuity and supply availability.
Pin-Compatible Alternatives with Identical Electrical Performance:
SMCJ75CA-TP (Micro Commercial Co) and SMCJ75CA-HR / SMCJ75CA-HRA / SMCJ75CA-HRAT7 (Littelfuse) provide identical electrical specifications with extended lower temperature operating ranges (-65°C minimum vs. -55°C). These parts are suitable for applications requiring enhanced cold-temperature performance while maintaining all other electrical characteristics.
Enhanced Performance Alternatives:
5.0SMDJ75CA (MDE Semiconductor Inc), 5.0SMLJ75CA-TP (Micro Commercial Co), and SMC3K75CA-M3/57 (Vishay) maintain identical voltage specifications but provide higher peak pulse current and power ratings (24.8A to 41.4A, 3000W to 5000W). These parts are suitable for applications requiring additional transient energy absorption margin or higher surge current handling.
All substitute parts maintain DO-214AB (SMC) package compatibility, surface mount configuration, and ROHS3 compliance. Selection should be based on supply availability, cost considerations, and specific application requirements for operating temperature range and transient energy handling capacity.
Frequently Asked Questions (FAQ)
Q: Can SMCJ75CA directly replace CD214C-T75CALF without circuit modification?
A: Yes. SMCJ75CA is a direct electrical and mechanical equivalent with identical voltage ratings (75V reverse standoff, 121V clamping), current specifications (12.4A peak pulse), and DO-214AB package configuration. No circuit changes are required.
Q: What is the difference between the direct equivalent SMCJ75CA and the enhanced alternatives like 5.0SMDJ75CA?
A: The direct equivalent SMCJ75CA matches the original part's 12.4A peak pulse current and 1500W power rating. Enhanced alternatives provide higher current (24.8A to 41.4A) and power ratings (3000W to 5000W) while maintaining identical voltage specifications. Enhanced parts offer greater transient energy absorption capability but are not required for direct replacement.
Q: Are the Littelfuse SMCJ75CA-HR variants suitable replacements?
A: Yes. SMCJ75CA-HR, SMCJ75CA-HRA, and SMCJ75CA-HRAT7 are suitable replacements with identical electrical specifications and extended lower temperature rating (-65°C vs. -55°C). These variants are appropriate for applications requiring enhanced cold-temperature performance.
Q: Does the extended temperature range of SMCJ75CA-TP (-55°C ~ 175°C) affect compatibility?
A: No. Extended temperature ranges are compatible with the original specification. SMCJ75CA-TP maintains all electrical parameters and is suitable for applications requiring higher upper temperature operation (175°C vs. 150°C).
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with modern manufacturing processes and environmental regulations.
Q: Can I use a higher current-rated part like 5.0SMLJ75CA-TP in place of the original CD214C-T75CALF?
A: Yes. Higher current and power ratings are acceptable for direct replacement. The 5.0SMLJ75CA-TP (41.4A, 5000W) will provide enhanced transient suppression capability while maintaining identical voltage clamping characteristics. This substitution is suitable for applications where additional performance margin is beneficial.
Q: What packaging options are available for these substitute parts?
A: All substitute parts are available in DO-214AB (SMC) surface mount package configuration, matching the original part's mounting type. Packaging variations (Bulk, Tape & Reel) are available from different manufacturers but do not affect electrical compatibility.
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