CD214C-T8.5CALF Equivalent & Substitute Parts

Part Overview

The CD214C-T8.5CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., rated at 8.5V reverse standoff with 14.4V clamping voltage. This surface mount component in DO-214AB (SMC) package is designed for general-purpose transient protection applications. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and production requirements. Active alternatives from multiple manufacturers provide identical or compatible electrical and mechanical specifications.

Key Parameters

Parameter	Value
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 (1.5kW)
Package / Case	DO-214AB, SMC
Operating Temperature Range	-55°C ~ 150°C (TJ)
Type	Zener
Bidirectional Channels	1
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD214C-T8.5CALF is determined by the following critical parameters:

Voltage - Reverse Standoff: Must be 8.5V (±tolerance)
Voltage - Clamping (Max) @ Ipp: Must be 14.4V or lower
Current - Peak Pulse (10/1000µs): Must be ≥104.2A
Power - Peak Pulse: Must be 1500W (1.5kW)
Package / Case: Must be DO-214AB (SMC)
Type: Must be Zener diode
Bidirectional Channels: Must be 1
Mounting Type: Must be Surface Mount

Substitute parts are grouped into two categories:

Direct Equivalents maintain identical electrical specifications (8.5V standoff, 14.4V clamping) with equivalent or superior peak pulse current ratings.

Similar Alternatives operate within acceptable tolerance bands (8.55V standoff, 14.5V clamping) with comparable peak pulse current and power ratings, suitable for applications where minor voltage variations are acceptable within circuit design margins.

Parameter Comparison

Part Number	Manufacturer	Standoff Voltage (V)	Breakdown Min (V)	Clamping Voltage (V)	Peak Pulse Current (A)	Peak Power (W)	Temp Range (°C)	Status
CD214C-T8.5CALF	Bourns Inc.	8.5	9.44	14.4	104.2	1500	-55 to 150	Obsolete
SMCJ8.5CA	Taiwan Semiconductor Corporation	8.5	9.44	14.4	109	1500	-55 to 150	Active
1.5SMC10CA	Taiwan Semiconductor Corporation	8.55	9.5	14.5	108	1500	-55 to 150	Active
1.5SMC10CA-E3/57T	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-65 to 150	Active
1.5SMC10CA-E3/9AT	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-65 to 150	Active
SM15T10CA-E3/57T	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-65 to 150	Active
SM15T10CA-E3/9AT	Vishay General Semiconductor - Diodes Division	8.55	9.5	14.5	103	1500	-65 to 150	Active
SMCJ8.5CA-HR	Littelfuse Inc.	8.5	9.44	14.4	104.2	1500	-65 to 150	Active
SMCJ8.5CA-HRA	Littelfuse Inc.	8.5	9.44	14.4	104.2	1500	-65 to 150	Active
SMCJ8.5CA-HRAT7	Littelfuse Inc.	8.5	9.44	14.4	104.2	1500	-65 to 150	Active

Engineering Selection Recommendations

Primary Recommendation: SMCJ8.5CA (Taiwan Semiconductor Corporation)

This part provides direct electrical equivalence to the CD214C-T8.5CALF with identical standoff voltage (8.5V), breakdown voltage (9.44V), and clamping voltage (14.4V). Peak pulse current is 109A, exceeding the original specification of 104.2A. The part is ROHS3 compliant with MSL 1 rating and is currently in active production with 15,200 units in stock. Operating temperature range matches the original (-55°C to 150°C).

Secondary Recommendation: SMCJ8.5CA-HR, SMCJ8.5CA-HRA, or SMCJ8.5CA-HRAT7 (Littelfuse Inc.)

These Littelfuse variants maintain identical electrical specifications to the original part (8.5V standoff, 14.4V clamping, 104.2A peak pulse current). All three are ROHS3 compliant with MSL 1 rating and active production status. Operating temperature range extends to -65°C minimum, providing enhanced low-temperature performance. Inventory availability ranges from 837 to 972 units.

Tertiary Recommendation: 1.5SMC10CA-E3/57T, 1.5SMC10CA-E3/9AT, SM15T10CA-E3/57T, or SM15T10CA-E3/9AT (Vishay General Semiconductor)

These Vishay TransZorb® series parts operate within acceptable tolerance bands with 8.55V standoff and 14.5V clamping voltage. Peak pulse current is 103A, meeting the minimum requirement. All are ROHS3 compliant with MSL 1 rating and active production status. Operating temperature range extends to -65°C minimum. These parts are suitable for applications where voltage tolerance of ±0.05V is acceptable within circuit design margins.

All recommended substitutes maintain DO-214AB (SMC) package compatibility, surface mount configuration, and 1500W peak pulse power rating.

Frequently Asked Questions (FAQ)

Q: Can SMCJ8.5CA directly replace CD214C-T8.5CALF without circuit modification?

A: Yes. SMCJ8.5CA maintains identical voltage specifications (8.5V standoff, 14.4V clamping) and equivalent peak pulse current (109A vs. 104.2A). Both are DO-214AB surface mount packages with identical pinout and footprint. No circuit modification is required.

Q: What is the difference between direct equivalents and similar alternatives?

A: Direct equivalents (SMCJ8.5CA, Littelfuse SMCJ8.5CA-HR series) maintain the exact voltage specifications of the original part. Similar alternatives (Vishay 1.5SMC10CA and SM15T10CA series) operate at 8.55V standoff and 14.5V clamping, representing a 0.05V tolerance band. Both categories meet the 1500W peak pulse power and 103-109A peak pulse current requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitutes are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original part's compliance status.

Q: Does operating temperature range affect substitution compatibility?

A: The original CD214C-T8.5CALF operates from -55°C to 150°C. All recommended substitutes maintain this range or extend it to -65°C minimum. Extended temperature range does not affect compatibility for applications within the original temperature specification.

Q: Can I use Vishay 1.5SMC10CA series parts in place of the original?

A: Yes, with circuit design verification. These parts operate at 8.55V standoff (0.05V higher) and 14.5V clamping (0.1V higher) compared to the original 8.5V and 14.4V specifications. Peak pulse current (103A) meets the minimum requirement. Substitution is valid for applications where these minor voltage variations fall within acceptable circuit design margins.

Q: What is the inventory status of substitute parts?

A: SMCJ8.5CA (Taiwan Semiconductor) has 15,200 units in stock. Littelfuse variants (SMCJ8.5CA-HR, SMCJ8.5CA-HRA, SMCJ8.5CA-HRAT7) have 926-972 units available. Vishay parts (1.5SMC10CA-E3/57T, 1.5SMC10CA-E3/9AT, SM15T10CA-E3/57T, SM15T10CA-E3/9AT) have 687-1,115 units in stock.

Q: Are all substitute parts available in tape and reel packaging?

A: SMCJ8.5CA from Taiwan Semiconductor is available in standard packaging. Littelfuse SMCJ8.5CA-HR series and all Vishay parts are available in Tape & Reel (TR) packaging for automated assembly.

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