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CD214L-T85CALF Equivalent & Substitute Parts
Part Overview
The CD214L-T85CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., rated for 85V reverse standoff with 137V maximum clamping voltage and 20.8A peak pulse current. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part operates across -55°C to 150°C and is housed in a DO-214AB (SMC) surface mount package, compliant with RoHS3 and REACH regulations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 85V |
| Voltage - Breakdown (Min) | 94.4V |
| Voltage - Clamping (Max) @ Ipp | 137V |
| Current - Peak Pulse (10/1000µs) | 20.8A |
| Power - Peak Pulse | 3000W (3kW) |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Package / Case | DO-214AB, SMC |
| Type | Zener, Bidirectional |
| RoHS Status | RoHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the CD214L-T85CALF is determined by the following critical parameters:
- Voltage - Reverse Standoff: 85V (exact match required)
- Voltage - Clamping (Max) @ Ipp: 137V (exact match required)
- Package / Case: DO-214AB, SMC (exact match required)
- Operating Temperature: -55°C minimum, 150°C maximum (must meet or exceed)
- Type: Zener, Bidirectional, 1 channel (exact match required)
Current - Peak Pulse and Power - Peak Pulse may vary within acceptable design margins, as higher ratings provide enhanced transient protection without compromising circuit compatibility. All substitute parts maintain identical voltage specifications and package form factor, ensuring direct PCB compatibility.
Parameter Comparison
| Part Number | Manufacturer | VWM (85V) | Vc @ Ipp (137V) | Ipp (A) | Power (W) | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|
| CD214L-T85CALF | Bourns Inc. | 85V | 137V | 20.8A | 3000W | -55 ~ 150 | DO-214AB | Obsolete |
| SMLJ85CA | Bourns Inc. | 85V | 137V | 20.8A | 3000W | -55 ~ 150 | DO-214AB | Active |
| 5.0SMDJ85CA | MDE Semiconductor Inc | 85V | 137V | 36.5A | 5000W | -55 ~ 150 | DO-214AB | Active |
| 5.0SMDJ85CA-T7 | Littelfuse Inc. | 85V | 137V | 36.5A | 5000W | -65 ~ 150 | DO-214AB | Active |
| SMCJ85CA | Fairchild Semiconductor | 85V | 137V | 11A | 1500W | -55 ~ 150 | DO-214AB | Active |
| SMDJ85CA | Alpha & Omega Semiconductor Inc. | 85V | 137V | 21.9A | 3000W | -55 ~ 150 | DO-214AB | Active |
| TV15C850JB-HF | Comchip Technology | 85V | 137V | 10.95A | 1500W | -55 ~ 150 | DO-214AB | Active |
Engineering Selection Recommendations
Primary Recommendation: SMLJ85CA (Bourns Inc.)
SMLJ85CA is the direct equivalent from the original manufacturer. It maintains identical electrical specifications (20.8A Ipp, 3000W peak power) and operating temperature range (-55°C to 150°C). Product status is active with substantial inventory availability (25,747 pcs), ensuring long-term supply continuity. RoHS3 and REACH compliance match the original part.
Secondary Recommendations:
SMDJ85CA (Alpha & Omega Semiconductor Inc.) provides equivalent performance with 21.9A Ipp and 3000W power rating, closely matching the original 20.8A specification. Active status and RoHS3 compliance support production use.
5.0SMDJ85CA and 5.0SMDJ85CA-T7 offer enhanced transient protection with 36.5A Ipp and 5000W power dissipation. These are suitable for applications requiring higher surge margin. The Littelfuse variant (5.0SMDJ85CA-T7) extends the lower temperature limit to -65°C.
Not Recommended for Direct Substitution:
SMCJ85CA and TV15C850JB-HF feature reduced peak pulse current (11A and 10.95A respectively) and lower power ratings (1500W). These parts are suitable only if circuit design margins permit reduced transient protection capability.
Frequently Asked Questions (FAQ)
Q: Can SMLJ85CA directly replace CD214L-T85CALF without PCB modification?
A: Yes. SMLJ85CA is electrically and mechanically identical, using the same DO-214AB package. No PCB layout changes are required.
Q: What is the difference between the 3000W and 5000W rated parts?
A: Peak pulse power rating indicates transient energy dissipation capacity. The 5000W variants (5.0SMDJ85CA series) provide enhanced protection margin for high-energy transient events. Both maintain identical voltage clamping characteristics (137V @ Ipp).
Q: Are lower-rated parts (1500W) acceptable substitutes?
A: Lower-rated parts meet the voltage specifications but provide reduced transient protection margin. Substitution is permissible only if circuit analysis confirms transient energy levels remain within the 1500W limit.
Q: Does operating temperature range affect substitution eligibility?
A: The original part specifies -55°C to 150°C. Substitutes must meet or exceed this range. The 5.0SMDJ85CA-T7 extends to -65°C, providing additional margin. Parts with narrower ranges are not suitable.
Q: Are all substitute parts RoHS3 compliant?
A: All listed active substitutes are RoHS3 compliant. Compliance status is verified in the parameter comparison table.
Q: What is the significance of the DO-214AB package designation?
A: DO-214AB (SMC) is the physical package form factor. All substitutes use this identical package, ensuring footprint compatibility on existing PCBs. No rework or redesign is necessary.
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