CD214A-T8.0ALF Equivalent & Substitute Parts

Part Overview

The CD214A-T8.0ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features an 8V reverse standoff voltage with a 13.6V maximum clamping voltage and 29.4A peak pulse current capability in a DO-214AC (SMA) package. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	8	V
Voltage - Breakdown (Min)	8.89	V
Voltage - Clamping (Max) @ Ipp	13.6	V
Current - Peak Pulse (10/1000µs)	29.4	A
Power - Peak Pulse	400	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AC (SMA)	—
Mounting Type	Surface Mount	—
Type	Zener	—
Unidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the CD214A-T8.0ALF is determined by strict electrical and mechanical parameter matching within the TVS diode category. The critical parameters governing substitutability are:

Electrical Parameters:

Reverse standoff voltage: 8V nominal
Breakdown voltage minimum: 8.89V
Clamping voltage maximum: 13.6V at peak pulse current
Peak pulse current: 29.4A (10/1000µs waveform)
Power dissipation: 400W peak pulse

Mechanical Parameters:

Package: DO-214AC (SMA) surface mount
Mounting type: Surface mount
Unidirectional configuration: Single channel

Compliance Parameters:

RoHS3 compliance
MSL rating: 1 (Unlimited)

Parts are classified as direct equivalents when all electrical parameters match within specification tolerance. Parts are classified as similar when voltage or current parameters deviate but remain within acceptable application ranges for general-purpose overvoltage protection, provided the package and mounting type remain identical.

Parameter Comparison

Parameter	CD214A-T8.0ALF (Main)	SMAJ8.0A (Meritek)	P4SMA10A-M3/5A (Vishay)	P4SMA10A-M3/61 (Vishay)	SMA5J7.5A-M3/5A (Vishay)	SMA5J7.5A-M3/61 (Vishay)	SMA6J7.5A-M3/5A (Vishay)	SMA6J7.5A-M3/61 (Vishay)	SMA6J8.0A-E3/5A (Vishay)	SMA6J8.0A-E3/61 (Vishay)
Voltage - Reverse Standoff (Typ)	8V	8V	8.55V	8.55V	7.5V	7.5V	7.5V	7.5V	8V	8V
Voltage - Breakdown (Min)	8.89V	8.89V	9.5V	9.5V	8.33V	8.33V	8.33V	8.33V	8.89V	8.89V
Voltage - Clamping (Max) @ Ipp	13.6V	13.6V	14.5V	14.5V	12.9V	12.9V	11.8V	11.8V	18.2V	18.2V
Current - Peak Pulse (10/1000µs)	29.4A	29.41A	27.6A	27.6A	38.8A	38.8A	50.8A	50.8A	220A (8/20µs)	220A (8/20µs)
Power - Peak Pulse	400W	400W	400W	400W	500W	500W	600W	600W	4000W	4000W
Operating Temperature Range	-55 to 150°C	-55 to 150°C	-65 to 150°C	-65 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
Package / Case	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent:

SMAJ8.0A (Meritek) provides direct electrical equivalence to the CD214A-T8.0ALF with identical reverse standoff voltage (8V), breakdown voltage (8.89V), clamping voltage (13.6V), and peak pulse current (29.41A). This part maintains the same 400W power rating, operating temperature range (-55 to 150°C), and DO-214AC (SMA) package configuration. The SMAJ8.0A is in active production status with ROHS3 compliance and MSL 1 rating, making it the primary replacement for obsolete stock management and new design implementation.

Similar Alternatives:

The Vishay TransZorb® series parts (P4SMA10A-M3/5A, P4SMA10A-M3/61, SMA5J7.5A-M3/5A, SMA5J7.5A-M3/61, SMA6J7.5A-M3/5A, SMA6J7.5A-M3/61, SMA6J8.0A-E3/5A, SMA6J8.0A-E3/61) are classified as similar substitutes due to deviations in voltage or current parameters while maintaining the same package and mounting configuration. These parts are suitable for applications where the specific electrical characteristics of the CD214A-T8.0ALF are not critical constraints. All similar alternatives maintain ROHS3 compliance, MSL 1 rating, and active production status.

The SMA6J8.0A-E3/5A and SMA6J8.0A-E3/61 variants match the 8V reverse standoff and 8.89V breakdown voltage but feature significantly higher peak pulse current (220A at 8/20µs waveform) and power dissipation (4000W), making them suitable only for applications requiring enhanced transient protection capability.

Frequently Asked Questions (FAQ)

Q: Can SMAJ8.0A directly replace CD214A-T8.0ALF without circuit modification?

A: Yes. SMAJ8.0A is a direct electrical equivalent with matching reverse standoff voltage (8V), breakdown voltage (8.89V), clamping voltage (13.6V), peak pulse current (29.41A), and power rating (400W). Both components use identical DO-214AC (SMA) packaging and surface-mount configuration. No circuit redesign is required.

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

A: Direct equivalents match all critical electrical parameters (voltage and current ratings) within specification tolerance. Similar substitutes deviate in one or more electrical parameters but maintain package compatibility and general-purpose overvoltage protection functionality. Selection depends on application-specific voltage and current requirements.

Q: Are the Vishay TransZorb® parts suitable for all applications using CD214A-T8.0ALF?

A: Vishay TransZorb® parts are suitable only when application requirements permit deviation from the original 8V standoff voltage and 29.4A peak pulse current. For example, SMA5J7.5A variants feature lower standoff voltage (7.5V) and higher peak pulse current (38.8A), making them appropriate for applications with different transient protection specifications. Application circuit analysis is required to confirm compatibility.

Q: Does package compatibility guarantee electrical substitutability?

A: No. While all listed parts share the DO-214AC (SMA) surface-mount package, electrical parameters vary significantly. Package compatibility ensures mechanical fit on the PCB but does not guarantee circuit performance. Electrical parameters (standoff voltage, clamping voltage, peak pulse current) must be evaluated against application requirements.

Q: What is the significance of the 10/1000µs and 8/20µs pulse waveform specifications?

A: These specifications define the test conditions under which peak pulse current and power dissipation are measured. The CD214A-T8.0ALF and most direct equivalents use the 10/1000µs waveform standard. The SMA6J8.0A variants use the 8/20µs waveform, which represents a different transient pulse profile. Waveform differences affect the applicability of current and power ratings to specific transient scenarios.

Q: Are all listed parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the CD214A-T8.0ALF.

Q: What is the inventory status of substitute parts?

A: SMAJ8.0A (Meritek) has 15,628 units in stock. Vishay TransZorb® variants range from 893 to 12,200 units in stock. Inventory levels support both immediate replacement needs and production continuity planning.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message