SMDJ160 Equivalent & Substitute Parts

Part Overview

The SMDJ160 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. The part operates with a 160V reverse standoff voltage and provides 3000W peak pulse power dissipation in a DO-214AB (SMC) package. The SMDJ160 is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	160V
Voltage - Breakdown (Min)	168.75V
Voltage - Clamping (Max) @ Ipp	271.95V
Current - Peak Pulse (10/1000µs)	11.6A
Power - Peak Pulse	3000W
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature Range	-65°C ~ 150°C (TJ)
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitution eligibility for the SMDJ160 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): Must be 160V
Voltage - Breakdown (Min): Must be within the range 168.75V to 178V
Current - Peak Pulse (10/1000µs): Must be 11.6A or higher
Power - Peak Pulse: Must be 3000W or higher
Package / Case: Must be DO-214AB or SMC
Mounting Type: Must be Surface Mount
Type: Must be Zener
Unidirectional Channels: Must be 1

Substitute parts are grouped into two categories based on peak pulse current and power dissipation capacity:

Category A (Full Equivalents): Parts with 11.6A peak pulse current and 3000W power dissipation. These provide direct functional replacement with identical electrical performance.

Category B (Reduced Performance): Parts with 5.8A peak pulse current and 1500W power dissipation. These maintain voltage protection characteristics but with reduced current handling capacity.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Product Status
SMDJ160	Littelfuse Inc.	160V	168.75V	271.95V	11.6A	3000W	-65°C ~ 150°C	Obsolete
SMDJ160A	Alpha & Omega Semiconductor Inc.	160V	178V	259V	11.6A	3000W	-55°C ~ 150°C	Active
SMCJ160A	Fairchild Semiconductor	160V	178V	259V	5.8A	1500W	-55°C ~ 150°C	Active
SMCJ160A-TP	Micro Commercial Co	160V	178V	259V	5.8A	1500W	-55°C ~ 175°C	Active
SMCJ160AE3/TR13	Microchip Technology	160V	178V	259V	5.8A	1500W	-65°C ~ 150°C	Active
SMLJ160A	Bourns Inc.	160V	178V	259V	11.6A	3000W	-55°C ~ 150°C	Active
SMLJ160A-TP	Micro Commercial Co	160V	178V	259V	11.6A	3000W	-55°C ~ 175°C	Active
TV15C161J-G	Comchip Technology	160V	178V	259V	5.79A	1500W	-55°C ~ 150°C	Active
TV30C161J-G	Comchip Technology	160V	178V	259V	11.58A	3000W	-55°C ~ 150°C	Active

Engineering Selection Recommendations

Primary Substitutes (Full Equivalents):

SMDJ160A, SMLJ160A, SMLJ160A-TP, and TV30C161J-G are direct functional equivalents with 11.6A peak pulse current and 3000W power dissipation. All are active products with ROHS3 compliance. SMDJ160A and SMLJ160A offer the widest availability. SMLJ160A-TP and TV30C161J-G support extended operating temperatures (-55°C to 175°C and -55°C to 150°C respectively).

Secondary Substitutes (Reduced Performance):

SMCJ160A, SMCJ160A-TP, SMCJ160AE3/TR13, and TV15C161J-G operate at 5.8A peak pulse current and 1500W power dissipation. These are suitable only for applications where peak pulse current requirements do not exceed 5.8A. All are active products with ROHS3 compliance. SMCJ160A-TP supports the highest operating temperature range (-55°C to 175°C).

Compliance Considerations:

All substitute parts are ROHS3 compliant. SMLJ160A carries REACH Affected status; all other substitutes are REACH Unaffected. Moisture sensitivity level is 1 (Unlimited) for all parts with specified MSL ratings.

Frequently Asked Questions (FAQ)

Q: Can SMCJ160A replace SMDJ160 directly?

A: SMCJ160A meets the voltage and package requirements but operates at 5.8A peak pulse current versus the original 11.6A. Direct replacement is only suitable if the application peak pulse current does not exceed 5.8A.

Q: What is the difference between SMDJ160A and SMLJ160A?

A: Both parts maintain 11.6A peak pulse current and 3000W power dissipation. SMDJ160A is manufactured by Alpha & Omega Semiconductor Inc. with operating temperature -55°C to 150°C. SMLJ160A is manufactured by Bourns Inc. with the same temperature range. Both are functionally equivalent for the SMDJ160 application.

Q: Does operating temperature range affect substitution?

A: Operating temperature range affects suitability based on application requirements. SMCJ160A-TP and SMLJ160A-TP support -55°C to 175°C, providing extended high-temperature capability. SMCJ160AE3/TR13 supports -65°C to 150°C, matching the original SMDJ160 lower temperature limit. Select based on specific application thermal requirements.

Q: Are all substitutes available in Tape & Reel packaging?

A: Packaging varies by part number. SMDJ160A, SMCJ160A-TP, SMCJ160AE3/TR13, SMLJ160A, SMLJ160A-TP, TV15C161J-G, and TV30C161J-G are available in Tape & Reel. SMCJ160A is available in Bulk. Verify packaging availability with supplier for procurement requirements.

Q: What is the clamping voltage difference between SMDJ160 and substitutes?

A: SMDJ160 specifies 271.95V maximum clamping voltage. All substitute parts specify 259V maximum clamping voltage. This 12.95V difference represents improved clamping performance in substitute parts and does not affect compatibility for general-purpose overvoltage protection applications.

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