CD214L-T100ALF Equivalent & Substitute Parts

Part Overview

The CD214L-T100ALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. This unidirectional Zener diode features a 100V reverse standoff voltage with 162V maximum clamping voltage and 18.6A peak pulse current capability at 3000W power dissipation. The component is housed in a DO-214AB (SMC) package and operates across -55°C to 150°C junction temperature range.

The CD214L-T100ALF is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	100	V
Voltage - Breakdown (Min)	111	V
Voltage - Clamping (Max) @ Ipp	162	V
Current - Peak Pulse (10/1000µs)	18.6	A
Power - Peak Pulse	3000	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AB, SMC	—
Type	Zener	—
Unidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the CD214L-T100ALF are grouped based on strict electrical and mechanical parameter alignment:

Direct Equivalent (Identical Electrical Performance):

Reverse standoff voltage: 100V
Breakdown voltage (min): 111V
Clamping voltage (max): 162V
Peak pulse current: 18.6A
Peak pulse power: 3000W
Package: DO-214AB (SMC)
Operating temperature: -55°C to 150°C minimum

Similar Performance (Higher Power Rating):

Reverse standoff voltage: 100V
Breakdown voltage (min): 111V
Clamping voltage (max): 162V
Peak pulse current: 30.9A (higher than original)
Peak pulse power: 5000W (higher than original)
Package: DO-214AB (SMC)
Operating temperature: -55°C to 175°C or -65°C to 150°C

Similar Performance (Lower Power Rating):

Reverse standoff voltage: 100V
Breakdown voltage (min): 111V
Clamping voltage (max): 162V
Peak pulse current: 9.3A (lower than original)
Peak pulse power: 1500W (lower than original)
Package: DO-214AB (SMC)
Operating temperature: -55°C to 150°C or -65°C to 150°C

Parameter Comparison

Part Number	Manufacturer	VWM (V)	VBR (V)	VC (V)	Ipp (A)	Ppk (W)	Temp Range (°C)	Package	Status
CD214L-T100ALF	Bourns Inc.	100	111	162	18.6	3000	-55 to 150	DO-214AB	Obsolete
SMLJ100A	Bourns Inc.	100	111	162	18.6	3000	-55 to 150	DO-214AB	Active
5.0SMDJ100A	Taiwan Semiconductor Corporation	100	111	162	30.9	5000	-55 to 175	DO-214AB	Active
5.0SMDJ100A-T7	Littelfuse Inc.	100	111	162	30.9	5000	-65 to 150	DO-214AB	Active
SMCJ100A	Fairchild Semiconductor	100	111	162	9.3	1500	-55 to 150	DO-214AB	Active
SMCJ100A-HR	Littelfuse	100	111	162	9.3	1500	-65 to 150	DO-214AB	Active
SMCJ100A-HRA	Littelfuse Inc.	100	111	162	9.3	1500	-65 to 150	DO-214AB	Active
SMCJ100A-HRAT7	Littelfuse Inc.	100	111	162	9.3	1500	-65 to 150	DO-214AB	Active
SMCJ100A-TP	Micro Commercial Co	100	111	162	9.3	1500	-55 to 175	DO-214AB	Active
SMDJ100A	Alpha & Omega Semiconductor Inc.	100	111	162	18.6	3000	-55 to 150	DO-214AB	Active

Engineering Selection Recommendations

Primary Recommendation: SMLJ100A (Bourns Inc.)

The SMLJ100A is the direct equivalent replacement for the CD214L-T100ALF. It maintains identical electrical specifications (100V standoff, 162V clamping, 18.6A peak pulse, 3000W power) and identical operating temperature range (-55°C to 150°C). Both components are manufactured by Bourns Inc. and packaged in DO-214AB (SMC). The SMLJ100A is in active production status with 12,563 units in stock, ensuring long-term availability. RoHS3 compliance and MSL 1 rating match the original specification.

Secondary Recommendation: SMDJ100A (Alpha & Omega Semiconductor Inc.)

The SMDJ100A provides identical electrical performance to the CD214L-T100ALF with 18.6A peak pulse current and 3000W power dissipation. Operating temperature range (-55°C to 150°C) and DO-214AB package are equivalent. This part is in active production with 23,200 units in stock. ROHS3 compliance is confirmed. Selection of this part is appropriate when Bourns supply is constrained.

Higher Power Alternative: 5.0SMDJ100A or 5.0SMDJ100A-T7

These parts provide enhanced power handling (5000W vs. 3000W) and higher peak pulse current (30.9A vs. 18.6A) while maintaining identical voltage parameters (100V standoff, 162V clamping). Both are in active production. The 5.0SMDJ100A-T7 (Littelfuse Inc.) extends the lower operating temperature to -65°C. Selection is appropriate for applications requiring additional thermal margin or higher transient energy absorption.

Lower Power Alternative: SMCJ100A Series

Parts in the SMCJ100A series (Fairchild Semiconductor, Littelfuse variants) maintain voltage specifications but reduce peak pulse current to 9.3A and power to 1500W. These are suitable only for applications where the original 18.6A/3000W specification is not required. Multiple variants (SMCJ100A-HR, SMCJ100A-HRA, SMCJ100A-HRAT7, SMCJ100A-TP) are available from different manufacturers, all in active production.

All recommended substitutes are RoHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity ratings where specified.

Frequently Asked Questions (FAQ)

Q: Can SMLJ100A directly replace CD214L-T100ALF without circuit modification?

A: Yes. The SMLJ100A is a direct equivalent with identical voltage ratings (100V standoff, 162V clamping), peak pulse current (18.6A), power dissipation (3000W), operating temperature range (-55°C to 150°C), and DO-214AB package. No circuit changes are required.

Q: What is the difference between the 3000W and 5000W rated parts?

A: The 5.0SMDJ100A and 5.0SMDJ100A-T7 handle higher transient energy (5000W vs. 3000W) and support higher peak pulse current (30.9A vs. 18.6A). Voltage parameters remain identical. Selection depends on whether the application experiences transient pulses exceeding 3000W. If the original design operated reliably with CD214L-T100ALF at 3000W, the 5000W parts provide additional margin without changing circuit behavior.

Q: Why are SMCJ100A parts listed as substitutes if they have lower power ratings?

A: SMCJ100A variants maintain identical voltage specifications (100V standoff, 162V clamping) but reduce peak pulse current to 9.3A and power to 1500W. These are substitutes only for applications where the original 18.6A/3000W specification exceeds actual circuit requirements. Circuit analysis is required to confirm suitability.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended substitutes are RoHS3 compliant. REACH status varies: Bourns SMLJ100A and Littelfuse parts are REACH Affected; Taiwan Semiconductor and Alpha & Omega parts are REACH Unaffected. Verify REACH compliance requirements for your specific application and supply chain.

Q: What is the difference between SMCJ100A-HR, SMCJ100A-HRA, and SMCJ100A-HRAT7?

A: All three are Littelfuse variants with identical electrical specifications (100V standoff, 162V clamping, 9.3A peak pulse, 1500W power). The -HR, -HRA, and -HRAT7 designations indicate packaging and tape configuration variants. Electrical performance is equivalent; selection depends on tape reel compatibility with assembly equipment.

Q: Can I use 5.0SMDJ100A-T7 in place of SMLJ100A?

A: Electrically, yes, with the following considerations: The 5.0SMDJ100A-T7 provides higher power handling (5000W vs. 3000W) and higher peak pulse current (30.9A vs. 18.6A), which is a superset of the original specification. Operating temperature range is -65°C to 150°C (vs. -55°C to 150°C), providing lower temperature margin. If the circuit is designed for 3000W dissipation, the higher-rated part will not cause problems but adds cost. Use only if additional thermal margin is required.

Q: What packaging format should I specify for production?

A: All substitute parts are available in Tape & Reel (TR) format for automated assembly. The original CD214L-T100ALF packaging is not specified in the data. Confirm your assembly process requires TR format; if bulk packaging is acceptable, verify availability with your supplier.

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