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CD214C-T70CALF Equivalent & Substitute Parts
Part Overview
The CD214C-T70CALF 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 70V reverse standoff voltage with a 113V maximum clamping voltage and 13.3A 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 requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CD214C-T70CALF |
| Manufacturer | Bourns Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Package / Case | DO-214AB, SMC |
| Voltage - Reverse Standoff (Typ) | 70V |
| Voltage - Breakdown (Min) | 77.8V |
| Voltage - Clamping (Max) @ Ipp | 113V |
| Current - Peak Pulse (10/1000µs) | 13.3A |
| Power - Peak Pulse | 1500W (1.5kW) |
| 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-T70CALF is determined by strict electrical and mechanical parameter matching within the TVS diode category. The critical parameters that define substitutability are:
- Voltage - Reverse Standoff (Typ): 70V
- Voltage - Clamping (Max) @ Ipp: 113V
- Current - Peak Pulse (10/1000µs): 13.3A
- Power - Peak Pulse: 1500W (1.5kW)
- Package / Case: DO-214AB, SMC
- Operating Temperature Range: -55°C ~ 150°C (TJ) minimum
Substitute parts are classified into two categories:
Direct Substitutes maintain identical electrical specifications and peak pulse current ratings (13.3A, 1500W). These parts are pin-compatible and functionally equivalent for direct replacement.
Similar Substitutes maintain the same voltage ratings and package but differ in peak pulse current (44.3A, 5000W) or operating temperature range. These parts provide enhanced performance characteristics and are suitable where higher transient energy absorption or extended temperature operation is acceptable.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Operating Temperature | Package | Product Status |
|---|---|---|---|---|---|---|---|---|
| CD214C-T70CALF | Bourns Inc. | 70V | 113V | 13.3A | 1500W | -55°C ~ 150°C | DO-214AB, SMC | Obsolete |
| SMCJ70CA | Fairchild Semiconductor | 70V | 113V | 13.3A | 1500W | -55°C ~ 150°C | DO-214AB, SMC | Active |
| SMCJ70CA-HR | Littelfuse Inc. | 70V | 113V | 13.3A | 1500W | -65°C ~ 150°C | DO-214AB, SMC | Active |
| SMCJ70CA-HRA | Littelfuse Inc. | 70V | 113V | 13.3A | 1500W | -65°C ~ 150°C | DO-214AB, SMC | Active |
| SMCJ70CA-HRAT7 | Littelfuse Inc. | 70V | 113V | 13.3A | 1500W | -65°C ~ 150°C | DO-214AB, SMC | Active |
| SMCJ70CA-TP | Micro Commercial Co | 70V | 113V | 13.3A | 1500W | -55°C ~ 175°C | DO-214AB, SMC | Active |
| 5.0SMDJ70CA | MDE Semiconductor Inc | 70V | 113V | 44.3A | 5000W | -55°C ~ 150°C | DO-214AB, SMC | Active |
| 5.0SMLJ70CA-TP | Micro Commercial Co | 70V | 113V | 44.3A | 5000W | -55°C ~ 175°C | DO-214AB, SMC | Active |
| SMCJ70CA-TR | STMicroelectronics | 70V | 146V | 69A (8/20µs) | 1500W | -55°C ~ 150°C | DO-214AB, SMC | Active |
Engineering Selection Recommendations
Direct Substitutes (Identical Electrical Specifications):
SMCJ70CA (Fairchild Semiconductor) is the primary direct substitute. This part maintains all electrical parameters of the CD214C-T70CALF with active product status and ROHS3 compliance. Inventory availability is substantial at 20,215 units.
SMCJ70CA-HR, SMCJ70CA-HRA, and SMCJ70CA-HRAT7 (Littelfuse Inc.) are direct electrical equivalents with extended lower operating temperature range (-65°C vs. -55°C). These variants are suitable for applications requiring enhanced cold-temperature performance. All three maintain ROHS3 compliance and active status.
SMCJ70CA-TP (Micro Commercial Co) is a direct electrical equivalent with extended upper operating temperature range (-55°C ~ 175°C vs. -55°C ~ 150°C). This variant is appropriate for high-temperature applications. ROHS3 compliant and active status.
Similar Substitutes (Enhanced Performance):
5.0SMDJ70CA (MDE Semiconductor Inc) and 5.0SMLJ70CA-TP (Micro Commercial Co) maintain identical voltage ratings but provide higher peak pulse current (44.3A vs. 13.3A) and power dissipation (5000W vs. 1500W). These parts are suitable where greater transient energy absorption is required. Both are ROHS3 compliant and active.
Non-Recommended Substitute:
SMCJ70CA-TR (STMicroelectronics) exhibits a higher maximum clamping voltage (146V vs. 113V) and significantly higher peak pulse current (69A vs. 13.3A). This part does not meet the electrical specification requirements for direct substitution.
Frequently Asked Questions (FAQ)
Q: Can SMCJ70CA directly replace CD214C-T70CALF?
A: Yes. SMCJ70CA maintains identical electrical specifications: 70V reverse standoff, 113V clamping voltage, 13.3A peak pulse current, and 1500W power rating. Both use DO-214AB (SMC) packaging. The part is pin-compatible and functionally equivalent.
Q: What is the difference between SMCJ70CA-HR and SMCJ70CA-TP?
A: SMCJ70CA-HR (Littelfuse) extends the lower operating temperature to -65°C. SMCJ70CA-TP (Micro Commercial Co) extends the upper operating temperature to 175°C. Both maintain identical electrical specifications. Selection depends on application temperature requirements.
Q: Can I use 5.0SMDJ70CA as a substitute?
A: 5.0SMDJ70CA maintains the same voltage ratings and package but provides higher peak pulse current (44.3A vs. 13.3A) and power dissipation (5000W vs. 1500W). This is a performance upgrade suitable where enhanced transient suppression is acceptable. Electrical compatibility is maintained at the voltage level.
Q: Why is SMCJ70CA-TR not recommended?
A: SMCJ70CA-TR has a maximum clamping voltage of 146V, exceeding the 113V specification of the CD214C-T70CALF. This higher clamping voltage does not meet the original design requirements and is not a suitable substitute.
Q: Are all substitute parts ROHS3 compliant?
A: All listed substitute parts are ROHS3 compliant, matching the compliance status of the CD214C-T70CALF.
Q: What packaging format is used for these TVS diodes?
A: All parts use DO-214AB (SMC) surface mount packaging, ensuring mechanical compatibility in existing PCB layouts.
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