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CD214C-T8.5ALF Equivalent & Substitute Parts
Part Overview
The CD214C-T8.5ALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., rated at 8.5V reverse standoff with 14.4V maximum clamping voltage and 104.2A peak pulse current. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement continuity. The part operates across a temperature range of -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 |
|---|---|
| Manufacturer Part Number | CD214C-T8.5ALF |
| Manufacturer | Bourns Inc. |
| Product Status | Obsolete |
| Type | Zener TVS Diode |
| Voltage - Reverse Standoff (Typ) | 8.5V |
| Voltage - Breakdown (Min) | 9.44V |
| Voltage - Clamping (Max) @ Ipp | 14.4V |
| Current - Peak Pulse (10/1000µs) | 104.2A |
| Power - Peak Pulse | 1500W |
| Package / Case | DO-214AB, SMC |
| Mounting Type | Surface Mount |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| RoHS Status | RoHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the CD214C-T8.5ALF is determined by strict equivalence across the following critical parameters:
- Voltage - Reverse Standoff (Typ): 8.5V
- Voltage - Clamping (Max) @ Ipp: 14.4V
- Current - Peak Pulse (10/1000µs): 104.2A
- Power - Peak Pulse: 1500W
- Package / Case: DO-214AB, SMC
- Mounting Type: Surface Mount
- Unidirectional Channels: 1
Parts are categorized as follows:
Direct Equivalents maintain all critical electrical parameters and power rating at 1500W with 104.2A peak pulse current.
Upgrade Options provide enhanced performance with higher power dissipation (3000W) and increased peak pulse current (208.3A–208.4A) while maintaining identical voltage specifications and package form factor.
Similar Parts exhibit minor variations in voltage parameters (8.55V standoff, 14.5V clamping) or peak pulse current within acceptable tolerance ranges for general-purpose TVS applications.
Parameter Comparison
| Part Number | Manufacturer | Status | VWM (Typ) | VC (Max) | Ipp (A) | Power (W) | Package | Temp Range |
|---|---|---|---|---|---|---|---|---|
| CD214C-T8.5ALF | Bourns Inc. | Obsolete | 8.5V | 14.4V | 104.2 | 1500 | DO-214AB | -55°C ~ 150°C |
| SMCJ8.5A | EVVO Semi | Active | 8.5V | 14.4V | 104.2 | 1500 | DO-214AB | -55°C ~ 150°C |
| SMCJ8.5A-HRA | Littelfuse Inc. | Active | 8.5V | 14.4V | 104.2 | 1500 | DO-214AB | -65°C ~ 150°C |
| SMCJ8.5A-HR | Littelfuse Inc. | Active | 8.5V | 14.4V | 104.2 | 1500 | DO-214AB | -65°C ~ 150°C |
| 1.5SMC10A | Taiwan Semiconductor Corporation | Active | 8.55V | 14.5V | 108 | 1500 | DO-214AB | -55°C ~ 150°C |
| 1.5SMC10A-E3/57T | Vishay General Semiconductor | Active | 8.55V | 14.5V | 103 | 1500 | DO-214AB | -65°C ~ 150°C |
| SMCJ8.5A-TP | Micro Commercial Co | Active | 8.5V | 14.4V | 104.2 | 1500 | DO-214AB | -55°C ~ 175°C |
| SMCJ8V5A | Fairchild Semiconductor | Active | 8.5V | 14.4V | 104.2 | 1500 | DO-214AB | Not specified |
| SMDJ8.5A | Alpha & Omega Semiconductor Inc. | Active | 8.5V | 14.4V | 208.4 | 3000 | DO-214AB | -55°C ~ 150°C |
| SMDJ8.5A-T7 | Littelfuse Inc. | Active | 8.5V | 14.4V | 208.3 | 3000 | DO-214AB | -65°C ~ 150°C |
Engineering Selection Recommendations
Direct Equivalents (Recommended for Drop-In Replacement)
SMCJ8.5A (EVVO Semi), SMCJ8.5A-HRA (Littelfuse Inc.), and SMCJ8.5A-HR (Littelfuse Inc.) provide complete electrical and mechanical equivalence to the CD214C-T8.5ALF. All three are active products with RoHS3 compliance and MSL 1 rating. SMCJ8.5A-HRA and SMCJ8.5A-HR offer extended lower temperature operation to -65°C compared to the original -55°C specification. SMCJ8.5A-TP (Micro Commercial Co) and SMCJ8V5A (Fairchild Semiconductor) maintain identical electrical parameters with SMCJ8.5A-TP providing extended upper temperature operation to 175°C.
Upgrade Options (Enhanced Performance)
SMDJ8.5A (Alpha & Omega Semiconductor Inc.) and SMDJ8.5A-T7 (Littelfuse Inc.) maintain identical voltage specifications while doubling peak pulse current capacity to 208.3–208.4A and power dissipation to 3000W. These upgrades are suitable for applications requiring higher transient energy absorption without circuit redesign. Both are active products with full compliance certifications.
Similar Parts (Voltage Tolerance Acceptable)
1.5SMC10A (Taiwan Semiconductor Corporation) and 1.5SMC10A-E3/57T (Vishay General Semiconductor) exhibit minor voltage variations (8.55V standoff, 14.5V clamping) and peak pulse current within 103–108A range. These parts are suitable for general-purpose TVS applications where the specified voltage tolerance is acceptable. Both maintain 1500W power rating and DO-214AB package compatibility.
Frequently Asked Questions (FAQ)
Q: Can SMCJ8.5A directly replace CD214C-T8.5ALF without circuit modification?
A: Yes. SMCJ8.5A maintains identical electrical specifications (8.5V standoff, 14.4V clamping, 104.2A peak pulse) and DO-214AB package form factor. No circuit redesign is required.
Q: What is the difference between SMCJ8.5A-HRA and SMCJ8.5A-HR?
A: Both are Littelfuse products with identical electrical parameters. The primary difference is packaging: SMCJ8.5A-HRA is supplied in Tape & Reel format, while SMCJ8.5A-HR is also Tape & Reel. Both support extended temperature operation to -65°C.
Q: When should SMDJ8.5A be selected over SMCJ8.5A?
A: SMDJ8.5A is selected when the application requires higher transient energy absorption. With 3000W peak pulse power and 208.4A peak pulse current (versus 1500W and 104.2A for SMCJ8.5A), SMDJ8.5A provides enhanced protection margin. Electrical voltage specifications remain identical, allowing use in existing circuits with improved performance headroom.
Q: Are 1.5SMC10A and 1.5SMC10A-E3/57T acceptable substitutes?
A: These parts are acceptable for general-purpose TVS applications where minor voltage variations (8.55V standoff versus 8.5V, 14.5V clamping versus 14.4V) fall within design tolerance. Peak pulse current (103–108A) is comparable to the original 104.2A specification. Verify application-specific voltage requirements before selection.
Q: What packaging options are available?
A: All substitute parts are supplied in DO-214AB (SMC) surface mount package. Packaging formats include Cut Tape (CT), Digi-Reel®, Tape & Reel (TR), and Bulk. Verify procurement requirements with supplier documentation.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original CD214C-T8.5ALF specifications.
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