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CD214C-T26ALF Equivalent & Substitute Parts
Part Overview
The CD214C-T26ALF is a 26V unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., housed in a DO-214AB (SMC) surface mount package. This component is rated for 42.1V clamping voltage with 35.6A peak pulse current and 1500W peak pulse power dissipation. 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-T26ALF |
| Manufacturer | Bourns Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Voltage - Reverse Standoff (Typ) | 26V |
| Voltage - Breakdown (Min) | 28.9V |
| Voltage - Clamping (Max) @ Ipp | 42.1V |
| Current - Peak Pulse (10/1000µs) | 35.6A |
| Power - Peak Pulse | 1500W |
| Package / Case | DO-214AB, SMC |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| RoHS Status | ROHS3 Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the CD214C-T26ALF is determined by the following critical electrical and mechanical parameters:
Primary Substitution Criteria:
- Voltage - Reverse Standoff: 26V (exact match required)
- Voltage - Breakdown (Min): 28.9V (exact match required)
- Voltage - Clamping (Max) @ Ipp: 42.1V (exact match required)
- Current - Peak Pulse (10/1000µs): 35.6A minimum
- Power - Peak Pulse: 1500W minimum
- Package / Case: DO-214AB, SMC (exact match required)
- Mounting Type: Surface Mount (exact match required)
Substitution Categories:
Direct Equivalents maintain all electrical parameters within specification and are pin-for-pin compatible:
- SMCJ26A (MDD) - Active status, identical electrical specifications
- SMCJ26A-HRAT7 (Littelfuse Inc.) - Active status, identical electrical specifications
- SMCJ26A-M3/57T (Vishay) - Active status, identical electrical specifications
- SMCJ26A-M3/9AT (Vishay) - Active status, identical electrical specifications
- SMCJ26A-TP (Micro Commercial Co) - Active status, identical electrical specifications
Higher-Performance Alternatives exceed the minimum power dissipation requirement:
- 5.0SMDJ26A (Taiwan Semiconductor Corporation) - 5000W peak pulse power, 119A peak pulse current
- 5.0SMDJ26A-T7 (Littelfuse Inc.) - 5000W peak pulse power, 119A peak pulse current
Parameter Deviation - Not recommended as direct substitute:
- SMCJ26A-TR (STMicroelectronics) - Clamping voltage 54.6V exceeds specification; peak pulse current 187A (8/20µs) differs from 10/1000µs specification
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff | Voltage - Breakdown (Min) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse | Power - Peak Pulse | Package | Operating Temperature | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| CD214C-T26ALF | Bourns Inc. | 26V | 28.9V | 42.1V | 35.6A | 1500W | DO-214AB, SMC | -55°C ~ 150°C | Obsolete | ROHS3 Compliant |
| SMCJ26A | MDD | 26V | 28.9V | 42.1V | 35.7A | 1500W | DO-214AB, SMC | -50°C ~ 150°C | Active | ROHS3 Compliant |
| SMCJ26A-HRAT7 | Littelfuse Inc. | 26V | 28.9V | 42.1V | 35.7A | 1500W | DO-214AB, SMC | -65°C ~ 150°C | Active | ROHS3 Compliant |
| SMCJ26A-M3/57T | Vishay General Semiconductor | 26V | 28.9V | 42.1V | 35.6A | 1500W | DO-214AB, SMC | -55°C ~ 150°C | Active | ROHS3 Compliant |
| SMCJ26A-M3/9AT | Vishay General Semiconductor | 26V | 28.9V | 42.1V | 35.6A | 1500W | DO-214AB, SMC | -55°C ~ 150°C | Active | ROHS3 Compliant |
| SMCJ26A-TP | Micro Commercial Co | 26V | 28.9V | 42.1V | 35.7A | 1500W | DO-214AB, SMC | -55°C ~ 175°C | Active | ROHS3 Compliant |
| 5.0SMDJ26A | Taiwan Semiconductor Corporation | 26V | 28.9V | 42.1V | 119A | 5000W | DO-214AB, SMC | -55°C ~ 175°C | Active | ROHS3 Compliant |
| 5.0SMDJ26A-T7 | Littelfuse Inc. | 26V | 28.9V | 42.1V | 119A | 5000W | DO-214AB, SMC | -65°C ~ 150°C | Active | ROHS3 Compliant |
| SMCJ26A-TR | STMicroelectronics | 26V | 28.9V | 54.6V | 187A (8/20µs) | 1500W | DO-214AB, SMC | -55°C ~ 150°C | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For Direct Replacement (Identical Electrical Performance):
Select from SMCJ26A (MDD), SMCJ26A-HRAT7 (Littelfuse), SMCJ26A-M3/57T (Vishay), SMCJ26A-M3/9AT (Vishay), or SMCJ26A-TP (Micro Commercial Co). All are active products with ROHS3 compliance and meet the CD214C-T26ALF electrical specifications. These parts are suitable for applications requiring the original 1500W power dissipation and 35.6A peak pulse current.
For Higher Power Dissipation Applications:
Select 5.0SMDJ26A (Taiwan Semiconductor Corporation) or 5.0SMDJ26A-T7 (Littelfuse) when circuit design permits use of higher power-rated components (5000W). These parts maintain identical voltage specifications while providing 119A peak pulse current capability, offering design margin for transient protection in demanding applications.
Not Recommended:
SMCJ26A-TR (STMicroelectronics) exhibits a clamping voltage of 54.6V, which exceeds the CD214C-T26ALF specification of 42.1V. This deviation makes it unsuitable as a direct substitute for applications requiring precise voltage clamping control.
Frequently Asked Questions (FAQ)
Q: Can SMCJ26A (MDD) be used as a direct replacement for CD214C-T26ALF?
A: Yes. SMCJ26A maintains identical voltage specifications (26V standoff, 28.9V breakdown, 42.1V clamping) and equivalent current rating (35.7A vs. 35.6A). Both are housed in DO-214AB SMC packages. The part is active and ROHS3 compliant.
Q: What is the difference between direct equivalents and higher-performance alternatives?
A: Direct equivalents (SMCJ26A series) match the original 1500W power dissipation and 35.6A peak pulse current. Higher-performance alternatives (5.0SMDJ26A series) provide 5000W power dissipation and 119A peak pulse current while maintaining identical voltage specifications. Selection depends on circuit protection requirements.
Q: Why is SMCJ26A-TR not recommended as a substitute?
A: SMCJ26A-TR specifies a clamping voltage of 54.6V, which exceeds the CD214C-T26ALF maximum of 42.1V. Additionally, its peak pulse current is specified at 8/20µs waveform rather than the standard 10/1000µs. This deviation makes it unsuitable for applications requiring the original voltage clamping characteristics.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the CD214C-T26ALF.
Q: What packaging options are available for substitutes?
A: All substitute parts are supplied in DO-214AB (SMC) surface mount packages, identical to the original. Packaging variants (Tape & Reel, Cut Tape) are available from different manufacturers but do not affect electrical performance or pin compatibility.
Q: Can I use 5.0SMDJ26A in place of CD214C-T26ALF in existing designs?
A: Yes, provided the circuit board layout and thermal management accommodate the higher power dissipation capability. The 5.0SMDJ26A maintains identical voltage specifications and package footprint, making it a pin-compatible upgrade with enhanced transient protection margin.
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