CD214L-T8.5ALF Equivalent & Substitute Parts

Part Overview

The CD214L-T8.5ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., rated for 8.5V reverse standoff voltage with 14.4V maximum clamping voltage at peak pulse current of 208.4A. Housed in the DO-214AB (SMC) surface mount package, this component is designed for general-purpose transient voltage suppression applications. The part is currently obsolete, necessitating identification of functionally equivalent active alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

CD214L-T8.5ALF

Bourns Inc.In Stock: 893CD214L-T8.5ALF Datasheet

Current PartRFQ

SMLJ8.5A

Bourns Inc.In Stock: 15353SMLJ8.5A Datasheet

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1.5SMC10A

Taiwan Semiconductor CorporationIn Stock: 203021.5SMC10A Datasheet

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1.5SMC10A-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 20921.5SMC10A-E3/57T Datasheet

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SMCJ8.5A

EVVO SemiIn Stock: 9502SMCJ8.5A Datasheet

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SMCJ8.5A-TP

Micro Commercial CoIn Stock: 3740SMCJ8.5A-TP Datasheet

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SMCJ8V5A

Fairchild SemiconductorIn Stock: 18406SMCJ8V5A Datasheet

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SMDJ8.5A

Alpha & Omega Semiconductor Inc.In Stock: 12477SMDJ8.5A Datasheet

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SMDJ8.5A-HR

Littelfuse Inc.In Stock: 977SMDJ8.5A-HR Datasheet

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SMDJ8.5A-HRA

Littelfuse Inc.In Stock: 1115SMDJ8.5A-HRA Datasheet

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SMDJ8.5A-HRAT7

Littelfuse Inc.In Stock: 808SMDJ8.5A-HRAT7 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD214L-T8.5ALF is determined by strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 8.5V
• Voltage - Clamping (Max) @ Ipp: 14.4V
• Current - Peak Pulse (10/1000µs): 208.4A
• Power - Peak Pulse: 3000W
• Package / Case: DO-214AB, SMC
• Unidirectional Channels: 1
• Type: Zener

Direct Equivalents maintain all electrical parameters within specification. These parts are functionally interchangeable with the original CD214L-T8.5ALF.

Similar Alternatives share the same voltage rating (8.5V standoff, 14.4V clamping) and package but differ in peak pulse current capacity or power dissipation. These parts are suitable where the application does not require the full 208.4A peak pulse current specification.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Full Electrical Equivalence): SMLJ8.5A, SMDJ8.5A, SMDJ8.5A-HR, SMDJ8.5A-HRA, and SMDJ8.5A-HRAT7 are direct functional equivalents to the CD214L-T8.5ALF. All maintain identical voltage ratings (8.5V standoff, 14.4V clamping), peak pulse current (208.4A nominal), and power dissipation (3000W). All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. These parts are recommended for applications requiring the full specification of the original component.

Alternative Selection (Reduced Peak Pulse Current): SMCJ8.5A, SMCJ8.5A-TP, and SMCJ8V5A provide identical voltage clamping characteristics but with reduced peak pulse current capacity (104.2A) and power dissipation (1500W). These alternatives are suitable for applications where transient energy levels do not exceed 1500W peak pulse power. All maintain DO-214AB (SMC) package compatibility and ROHS3 compliance.

Marginal Voltage Tolerance Alternative: 1.5SMC10A and 1.5SMC10A-E3/57T offer slightly elevated voltage ratings (8.55V standoff, 14.5V clamping) with reduced peak pulse current (103–108A) and power dissipation (1500W). These parts are suitable only where the application tolerates the 0.05V increase in standoff voltage and 0.1V increase in clamping voltage, combined with reduced transient energy handling.

Product Status Consideration: All recommended substitute parts maintain active product status, ensuring long-term supply chain availability and manufacturing continuity. The original CD214L-T8.5ALF is obsolete and should not be specified for new designs.

Frequently Asked Questions (FAQ)

Q: Can SMCJ8.5A replace CD214L-T8.5ALF directly? A: SMCJ8.5A maintains identical voltage ratings and package but provides 104.2A peak pulse current versus the original 208.4A. Direct replacement is possible only if the application does not require the full 3000W peak pulse power specification. Verify transient energy levels in your circuit before substitution.

Q: What is the difference between SMDJ8.5A and SMCJ8.5A? A: Both maintain 8.5V standoff and 14.4V clamping voltage in DO-214AB (SMC) package. SMDJ8.5A provides 208.4A peak pulse current and 3000W power dissipation. SMCJ8.5A provides 104.2A peak pulse current and 1500W power dissipation. Selection depends on transient energy requirements of the application.

Q: Are Littelfuse SMDJ8.5A-HR variants interchangeable? A: SMDJ8.5A-HR, SMDJ8.5A-HRA, and SMDJ8.5A-HRAT7 are functionally equivalent. All maintain 8.5V standoff, 14.4V clamping, 208.3A peak pulse current, and 3000W power dissipation. Suffix designations indicate packaging or tape configuration variants. Electrical performance is identical.

Q: Why do 1.5SMC10A parts show 8.55V instead of 8.5V? A: 1.5SMC10A and 1.5SMC10A-E3/57T are rated for 8.55V standoff voltage, representing a 0.05V tolerance variation from the original 8.5V specification. This marginal difference may affect circuit performance in applications with tight voltage margins. Verify compatibility with your design specifications before substitution.

Q: Is packaging format (Tape & Reel vs. Bulk) electrically significant? A: Packaging format does not affect electrical performance. Tape & Reel (TR), Cut Tape (CT), and Bulk packaging options are logistics and assembly considerations only. Electrical specifications remain identical across packaging variants of the same part number.

Q: Do all substitute parts maintain RoHS3 compliance? A: All listed substitute parts are ROHS3 compliant. Compliance status is consistent across direct equivalents and similar alternatives. MSL 1 (Unlimited) moisture sensitivity rating is maintained across all recommended substitutes.