CD214C-T48ALF Equivalent & Substitute Parts

Part Overview

The CD214C-T48ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc. in the DO-214AB (SMC) surface mount package. It provides 48V reverse standoff voltage with 77.4V maximum clamping voltage and 19.4A peak pulse current capability, delivering 1500W peak pulse power for general-purpose transient protection applications.

The CD214C-T48ALF is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications requiring 48V TVS diode protection.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	48	V
Voltage - Breakdown (Min)	53.3	V
Voltage - Clamping (Max) @ Ipp	77.4	V
Current - Peak Pulse (10/1000µs)	19.4	A
Power - Peak Pulse	1500	W
Type	Zener	—
Unidirectional Channels	1	—
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Operating Temperature Range	-55°C ~ 150°C	TJ
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the CD214C-T48ALF are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalents maintain identical electrical specifications: 48V reverse standoff voltage, 53.3V minimum breakdown voltage, 77.4V maximum clamping voltage, 19.4A peak pulse current, and 1500W peak pulse power. These parts are pin-compatible and functionally interchangeable in the same circuit application without design modification.

Higher-Power Alternatives share the same voltage parameters (48V standoff, 77.4V clamping) and package form factor (DO-214AB/SMC) but provide increased peak pulse current (38.8A to 64.7A) and higher peak pulse power ratings (3000W to 5000W). These parts are mechanically and electrically compatible for applications requiring enhanced transient energy absorption capability.

All substitute parts maintain the same unidirectional Zener diode topology, surface mount configuration, and DO-214AB (SMC) package specification as the original CD214C-T48ALF.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Clamping (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Operating Temperature (°C)	Product Status	RoHS Status
CD214C-T48ALF	Bourns Inc.	48	77.4	19.4	1500	-55 ~ 150	Obsolete	ROHS3 Compliant
SMCJ48A	MDD	48	77.4	19.4	1500	-50 ~ 150	Active	ROHS3 Compliant
SMCJ48A-HR	Littelfuse Inc.	48	77.4	19.4	1500	-65 ~ 150	Active	ROHS3 Compliant
SMCJ48A-TP	Micro Commercial Co	48	77.4	19.4	1500	-55 ~ 175	Active	ROHS3 Compliant
SMDJ48A	Alpha & Omega Semiconductor Inc.	48	77.4	38.8	3000	-55 ~ 150	Active	ROHS3 Compliant
SMDJ48A-T7	Littelfuse Inc.	48	77.4	38.8	3000	-65 ~ 150	Active	ROHS3 Compliant
SMLJ48A-TP	Micro Commercial Co	48	77.4	38.8	3000	-55 ~ 175	Active	ROHS3 Compliant
5.0SMDJ48A	Taiwan Semiconductor Corporation	48	77.4	64.7	5000	-55 ~ 175	Active	ROHS3 Compliant
5.0SMDJ48A-T7	Littelfuse	48	77.4	64.7	5000	-65 ~ 150	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (1:1 Substitution): SMCJ48A (MDD), SMCJ48A-HR (Littelfuse Inc.), and SMCJ48A-TP (Micro Commercial Co) are direct electrical and mechanical equivalents to the CD214C-T48ALF. All three parts are active products with ROHS3 compliance and identical voltage and current specifications. Selection among these three depends on supply availability and operating temperature requirements. SMCJ48A-HR and SMCJ48A-TP support extended temperature ranges (-65°C and -55°C lower limits respectively, with -55°C to -65°C lower bounds and 150°C to 175°C upper bounds).

Higher-Power Alternatives: SMDJ48A, SMDJ48A-T7, and SMLJ48A-TP provide 3000W peak pulse power (2× the original specification) while maintaining identical voltage parameters and package form factor. These parts are suitable for applications requiring enhanced transient suppression capability without circuit redesign.

5.0SMDJ48A and 5.0SMDJ48A-T7 provide 5000W peak pulse power (3.3× the original specification) with 64.7A peak pulse current. These parts are appropriate for high-energy transient environments.

All substitute parts maintain ROHS3 compliance, unidirectional Zener topology, and DO-214AB (SMC) surface mount packaging. Product status is active for all listed substitutes, ensuring long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can SMCJ48A directly replace CD214C-T48ALF without circuit modification? A: Yes. SMCJ48A maintains identical voltage specifications (48V standoff, 77.4V clamping), current rating (19.4A peak pulse), power rating (1500W), and DO-214AB (SMC) package configuration. No circuit changes are required.

Q: What is the difference between direct equivalents and higher-power alternatives? A: Direct equivalents (SMCJ48A series) match the original 1500W power rating and 19.4A peak pulse current. Higher-power alternatives (SMDJ48A series at 3000W, 5.0SMDJ48A series at 5000W) provide increased transient energy absorption while maintaining the same voltage protection levels and package form factor. Higher-power parts are backward-compatible for applications requiring enhanced protection margins.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the original CD214C-T48ALF.

Q: What are the operating temperature differences among substitutes? A: Direct equivalents operate within -50°C to -65°C lower limits and 150°C to 175°C upper limits. SMCJ48A-HR and 5.0SMDJ48A-T7 support -65°C lower limits. SMCJ48A-TP and SMLJ48A-TP support -55°C to 175°C ranges. Select based on application thermal requirements.

Q: Can higher-power alternatives be used in place of the original part? A: Yes. SMDJ48A, SMDJ48A-T7, SMLJ48A-TP, 5.0SMDJ48A, and 5.0SMDJ48A-T7 are mechanically and electrically compatible. They share identical voltage specifications and DO-214AB (SMC) packaging. Higher power ratings provide additional design margin without affecting circuit operation.

Q: What packaging format do all substitute parts use? A: All substitute parts use DO-214AB (SMC) surface mount packaging, identical to the original CD214C-T48ALF. No PCB layout modifications are required.

Q: Which substitute offers the best supply availability? A: SMCJ48A (MDD) maintains the highest inventory at 16,125 pieces. SMCJ48A-TP (Micro Commercial Co) and SMLJ48A-TP (Micro Commercial Co) also maintain substantial inventory levels (3,509 and 3,675 pieces respectively).

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