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CD214L-T13ALF Equivalent & Substitute Parts
Part Overview
The CD214L-T13ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., rated for 13V reverse standoff voltage with a 21.5V maximum clamping voltage. This surface mount component in DO-214AB (SMC) package is designed for general-purpose transient voltage protection 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 |
|---|---|
| Reverse Standoff Voltage (Typ) | 13V |
| Breakdown Voltage (Min) | 14.4V |
| Clamping Voltage (Max) @ Ipp | 21.5V |
| Peak Pulse Current (10/1000µs) | 139.4A |
| Peak Pulse Power | 3000W (3kW) |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Package / Case | DO-214AB, SMC |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the CD214L-T13ALF is determined by strict electrical and mechanical parameter matching:
Primary Substitution Criteria:
- Reverse standoff voltage: 13V (Typ)
- Breakdown voltage: 14.4V (Min)
- Clamping voltage: 21.5V (Max) @ Ipp
- Package: DO-214AB, SMC (surface mount)
- Unidirectional configuration (1 channel)
- Zener type TVS diode
Secondary Considerations:
- Peak pulse current rating (139.4A nominal for direct equivalents; higher ratings acceptable for enhanced protection margin)
- Peak pulse power rating (3000W nominal for direct equivalents; higher ratings acceptable)
- Operating temperature range (-55°C ~ 150°C minimum requirement)
- RoHS3 compliance and MSL rating
Substitute parts are grouped into two categories: direct equivalents (matching all primary parameters) and similar alternatives (matching voltage specifications with different current/power ratings).
Parameter Comparison
| Part Number | Manufacturer | Standoff Voltage | Breakdown Voltage | Clamping Voltage | Peak Pulse Current | Peak Pulse Power | Temp Range | Status |
|---|---|---|---|---|---|---|---|---|
| CD214L-T13ALF | Bourns Inc. | 13V | 14.4V | 21.5V | 139.4A | 3000W | -55°C ~ 150°C | Obsolete |
| SMLJ13A | Bourns Inc. | 13V | 14.4V | 21.5V | 139.4A | 3000W | -55°C ~ 150°C | Active |
| 5.0SMDJ13A | MDE Semiconductor Inc | 13V | 14.4V | 21.5V | 233A | 5000W | -55°C ~ 150°C | Active |
| 5.0SMDJ13A-T7 | Littelfuse Inc. | 13V | 14.4V | 21.5V | 233A | 5000W | -65°C ~ 150°C | Active |
| SMCJ13A | ANBON SEMICONDUCTOR (INT'L) LIMITED | 13V | 14.4V | 21.5V | 69.7A | 1500W | -55°C ~ 150°C | Active |
| SMCJ13A-TP | Micro Commercial Co | 13V | 14.4V | 21.5V | 69.8A | 1500W | -55°C ~ 175°C | Active |
| SMDJ13A | Alpha & Omega Semiconductor Inc. | 13V | 14.4V | 21.5V | 139.6A | 3000W | -55°C ~ 150°C | Active |
| SMDJ13A-HR | Littelfuse | 13V | 14.4V | 21.5V | 139.5A | 3000W | -65°C ~ 150°C | Active |
| SMDJ13A-T7 | Littelfuse Inc. | 13V | 14.4V | 21.5V | 139.5A | 3000W | -65°C ~ 150°C | Active |
| SZ1SMC13AT3G | Littelfuse Inc. | 13V | 14.4V | 21.5V | 69.7A | 1500W | -65°C ~ 150°C | Active |
Engineering Selection Recommendations
Direct Equivalents (Recommended Primary Substitutes):
SMLJ13A (Bourns Inc.) is the primary direct equivalent, offering identical electrical specifications and temperature range to the CD214L-T13ALF while maintaining active product status. This part is manufactured by the same supplier as the original component, ensuring design continuity.
SMDJ13A (Alpha & Omega Semiconductor Inc.) and SMDJ13A-T7 (Littelfuse Inc.) provide equivalent performance with peak pulse current and power ratings matching the original specification. Both are active products with RoHS3 compliance.
Enhanced Performance Alternatives:
5.0SMDJ13A (MDE Semiconductor Inc.) and 5.0SMDJ13A-T7 (Littelfuse Inc.) offer higher peak pulse current (233A) and power dissipation (5000W) ratings while maintaining identical voltage specifications. These parts provide additional protection margin for applications requiring enhanced transient suppression capability.
Lower Power Alternatives:
SMCJ13A (ANBON SEMICONDUCTOR), SMCJ13A-TP (Micro Commercial Co), and SZ1SMC13AT3G (Littelfuse Inc.) feature reduced peak pulse current (69.7–69.8A) and power ratings (1500W). These alternatives are suitable for applications with lower transient energy requirements and are appropriate for cost optimization when full 3000W capability is not required.
Temperature Range Considerations:
Parts rated for -65°C minimum operating temperature (5.0SMDJ13A-T7, SMDJ13A-HR, SMDJ13A-T7, SZ1SMC13AT3G) provide extended low-temperature performance compared to the -55°C minimum of the original specification. SMCJ13A-TP extends the maximum operating temperature to 175°C, offering enhanced high-temperature capability.
All substitute parts maintain RoHS3 compliance, MSL rating of 1 (Unlimited), and surface mount DO-214AB (SMC) package compatibility with the original design.
Frequently Asked Questions (FAQ)
Q: Can SMLJ13A directly replace CD214L-T13ALF without circuit modification?
A: Yes. SMLJ13A matches all critical electrical parameters: 13V standoff voltage, 14.4V breakdown voltage, 21.5V clamping voltage, 139.4A peak pulse current, and 3000W peak pulse power. Both operate across -55°C to 150°C. The DO-214AB (SMC) package is identical. No circuit changes are required.
Q: What is the difference between 3000W and 5000W rated parts?
A: Peak pulse power rating indicates the maximum transient energy the device can dissipate during a 10/1000µs pulse. The 5.0SMDJ13A series (5000W) provides higher energy absorption capability. Selection depends on the actual transient energy present in the application. Both maintain identical voltage clamping characteristics.
Q: Are the 1500W alternatives suitable for the same applications?
A: The 1500W alternatives (SMCJ13A, SMCJ13A-TP, SZ1SMC13AT3G) maintain identical voltage specifications but handle half the peak pulse power. They are suitable only if the application's transient energy does not exceed 1500W. Circuit analysis is required to confirm adequacy for specific transient conditions.
Q: Does operating temperature range affect substitution compatibility?
A: All substitute parts meet or exceed the original -55°C to 150°C range. Parts rated to -65°C or 175°C provide extended capability but do not compromise compatibility. Selection should match the actual application temperature requirements.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts are RoHS3 compliant with MSL rating of 1 (Unlimited), matching the environmental and reliability standards of the original CD214L-T13ALF.
Q: What is the significance of different manufacturer part numbers (SMDJ, SMCJ, SMLJ)?
A: These designations represent different manufacturer product lines within the 13V TVS diode category. All maintain the same voltage specifications and DO-214AB package. The differences are primarily in internal design, current rating, and power dissipation. Selection should be based on electrical requirements and availability.
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