SMCJ17A-13 Equivalent & Substitute Parts

Part Overview

The SMCJ17A-13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated in the DO-214AB (SMC) surface mount package. This component is designed for general-purpose transient voltage protection with a 17V reverse standoff voltage and 27.6V maximum clamping voltage. The SMCJ17A-13 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain identical electrical characteristics: 17V reverse standoff, 18.9V minimum breakdown voltage, and 27.6V maximum clamping voltage at peak pulse current.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	17	V
Voltage - Breakdown (Min)	18.9	V
Voltage - Clamping (Max) @ Ipp	27.6	V
Current - Peak Pulse (10/1000µs)	53.3	A
Power - Peak Pulse	1500	W
Type	Zener	—
Unidirectional Channels	1	—
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature	-55 to 150	°C

Substitute Part Grouping Explanation

Substitute parts for the SMCJ17A-13 are classified into two functional groups based on electrical performance:

Group 1: Direct Electrical Equivalents (1500W Peak Pulse Power) These parts maintain the original 1500W peak pulse power rating and peak pulse current specifications within the 53.3A to 54.4A range. Substitutes in this group are pin-compatible and functionally interchangeable without circuit redesign.

Key parameters for Group 1 equivalence:

Voltage - Reverse Standoff: 17V
Voltage - Breakdown (Min): 18.9V
Voltage - Clamping (Max) @ Ipp: 27.6V
Current - Peak Pulse: 53.3A to 54.4A
Power - Peak Pulse: 1500W
Package: DO-214AB (SMC)

Group 2: Enhanced Performance Alternatives (3000W to 5000W Peak Pulse Power) These parts exceed the original power rating with higher peak pulse current capabilities (106.6A to 181A) and increased peak pulse power (3000W to 5000W). These parts maintain identical voltage specifications but provide enhanced transient protection capability. Selection from this group requires circuit analysis to confirm the application can utilize the increased current handling without adverse effects.

Key parameters for Group 2 equivalence:

Voltage - Reverse Standoff: 17V
Voltage - Breakdown (Min): 18.9V
Voltage - Clamping (Max) @ Ipp: 27.6V
Current - Peak Pulse: 106.6A to 181A
Power - Peak Pulse: 3000W to 5000W
Package: DO-214AB (SMC)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	RoHS Status
SMCJ17A-13	Diodes Incorporated	Discontinued	17V	18.9V	27.6V	53.3A	1500W	DO-214AB, SMC	-55 to 150°C	RoHS non-compliant
SMCJ17A-13-F	Diodes Incorporated	Active	17V	18.9V	27.6V	53.3A	1500W	DO-214AB, SMC	-55 to 150°C	ROHS3 Compliant
SMCJ17A	Fairchild Semiconductor	Active	17V	18.9V	27.6V	54.4A	1500W	DO-214AB, SMC	-55 to 150°C	Not specified
SMCJ17A-TP	Micro Commercial Co	Active	17V	18.9V	27.6V	54.4A	1500W	DO-214AB, SMC	-55 to 175°C	ROHS3 Compliant
5.0SMDJ17A	Taiwan Semiconductor Corporation	Active	17V	18.9V	27.6V	181A	5000W	DO-214AB, SMC	-55 to 175°C	ROHS3 Compliant
5.0SMDJ17A-T7	Littelfuse Inc.	Active	17V	18.9V	27.6V	181A	5000W	DO-214AB, SMC	-65 to 150°C	ROHS3 Compliant
SMDJ17A-T7	Littelfuse Inc.	Active	17V	18.9V	27.6V	108.7A	3000W	DO-214AB, SMC	-65 to 150°C	ROHS3 Compliant
SMLJ17A	Bourns Inc.	Active	17V	18.9V	27.6V	106.6A	3000W	DO-214AB, SMC	-55 to 150°C	ROHS3 Compliant
SMLJ17A-TP	Micro Commercial Co	Active	17V	18.9V	27.6V	106.6A	3000W	DO-214AB, SMC	-55 to 175°C	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: SMCJ17A-13-F The SMCJ17A-13-F is the direct successor to the discontinued SMCJ17A-13. Manufactured by Diodes Incorporated, this part maintains identical electrical specifications and package configuration. The primary distinction is ROHS3 compliance status, making it suitable for applications subject to RoHS regulations. This part is the preferred choice for direct replacement in existing designs.

Secondary Recommendation: SMCJ17A-TP The SMCJ17A-TP from Micro Commercial Co provides equivalent electrical performance with extended operating temperature range (-55 to 175°C versus -55 to 150°C). This part is suitable for applications requiring enhanced thermal performance while maintaining the original 1500W power rating. ROHS3 compliance is confirmed.

Alternative Recommendation: SMLJ17A-TP The SMLJ17A-TP from Micro Commercial Co offers enhanced transient protection with 3000W peak pulse power and 106.6A peak pulse current. This part is suitable for applications where increased transient energy absorption is beneficial. Extended operating temperature range (-55 to 175°C) is provided. ROHS3 compliance is confirmed. Circuit analysis is required to confirm compatibility with the increased current handling capability.

High-Performance Alternative: 5.0SMDJ17A The 5.0SMDJ17A from Taiwan Semiconductor Corporation provides maximum transient protection with 5000W peak pulse power and 181A peak pulse current. This part is suitable for high-energy transient environments. Extended operating temperature range (-55 to 175°C) is provided. ROHS3 compliance is confirmed. Circuit analysis is required to confirm compatibility with the significantly increased current handling capability.

Frequently Asked Questions (FAQ)

Q: Can SMCJ17A-13-F be used as a direct replacement for SMCJ17A-13? A: Yes. The SMCJ17A-13-F maintains identical electrical specifications (17V reverse standoff, 27.6V clamping voltage, 53.3A peak pulse current, 1500W peak pulse power) and package configuration (DO-214AB SMC). The primary difference is ROHS3 compliance status. No circuit modifications are required.

Q: What is the difference between Group 1 and Group 2 substitute parts? A: Group 1 parts (SMCJ17A-13-F, SMCJ17A, SMCJ17A-TP) maintain the original 1500W peak pulse power rating and are direct electrical equivalents. Group 2 parts (SMDJ17A-T7, SMLJ17A, SMLJ17A-TP, 5.0SMDJ17A, 5.0SMDJ17A-T7) provide enhanced performance with 3000W to 5000W peak pulse power and higher peak pulse current. Group 2 parts require circuit analysis to confirm compatibility.

Q: Are all substitute parts in the same package? A: Yes. All substitute parts use the DO-214AB (SMC) surface mount package. Pin compatibility is maintained across all listed alternatives.

Q: What does ROHS3 compliance mean for component selection? A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements. The original SMCJ17A-13 is RoHS non-compliant. If RoHS compliance is required for your application, select from parts with ROHS3 Compliant status: SMCJ17A-13-F, SMCJ17A-TP, SMDJ17A-T7, SMLJ17A, SMLJ17A-TP, 5.0SMDJ17A, or 5.0SMDJ17A-T7.

Q: Can I use a higher power-rated part (3000W or 5000W) in place of the 1500W original? A: Voltage specifications remain identical across all parts (17V reverse standoff, 27.6V clamping). Higher power-rated parts provide enhanced transient protection capability. However, circuit analysis is required to confirm the application can accommodate the increased peak pulse current without adverse effects on circuit operation or component stress.

Q: What is the operating temperature range consideration for part selection? A: The original SMCJ17A-13 operates from -55 to 150°C. Some alternatives extend this range to -55 to 175°C (SMCJ17A-TP, SMLJ17A-TP, 5.0SMDJ17A) or -65 to 150°C (5.0SMDJ17A-T7, SMDJ17A-T7). Select based on your application's thermal requirements.

Q: Are there inventory considerations for part selection? A: Inventory levels vary significantly. SMCJ17A-13-F (10,300 pcs), SMCJ17A (38,300 pcs), and 5.0SMDJ17A (18,300 pcs) have substantial availability. Lower-volume alternatives include SMDJ17A-T7 (1,138 pcs) and 5.0SMDJ17A-T7 (1,469 pcs). Verify current availability with your supplier.

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