DST3060LC Equivalent & Substitute Parts

Part Overview

The DST3060LC is a Schottky diode array manufactured by Littelfuse Inc., configured as a 1 Pair Common Cathode with 60V reverse voltage rating and 15A average rectified current per diode. The device is packaged in TO-220-3 through-hole configuration and is currently Active in product status with 1006 units in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when supply chain constraints occur, or when design flexibility is required across multiple sourcing channels. Substitute parts must maintain electrical compatibility within the specified parameter ranges while meeting the same mechanical and thermal requirements.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io) (per Diode)	15	A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 15 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	300	µA @ 60 V
Operating Temperature - Junction	-55 to 125	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution logic for the DST3060LC is based on the following critical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode (mandatory match)
Technology: Schottky (mandatory match)
Voltage - DC Reverse (Vr) (Max): 60V (mandatory match)
Mounting Type: Through Hole (mandatory match)
Package / Case: TO-220-3 (mandatory match)

Secondary Compatibility Parameters:

Current - Average Rectified (Io) (per Diode): 15A or higher
Voltage - Forward (Vf) (Max) @ If: Must not exceed application requirements
Operating Temperature - Junction: Must support application thermal range
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (mandatory match)
RoHS Status: ROHS3 Compliant (mandatory match)

Substitute parts are grouped into two categories:

Category A - Direct Equivalents (15A Current Rating): Parts with identical 15A current rating and matching electrical characteristics. These parts provide direct replacement capability with minimal design consideration.

Category B - Functional Equivalents (10A or 20A Current Rating): Parts with different current ratings but matching voltage, configuration, and package specifications. These parts require application-level verification of current requirements.

Parameter Comparison

Part Number	Manufacturer	Io (A)	Vf (Max) @ If	Vr (Max)	Tj (Max)	Product Status	RoHS
DST3060LC	Littelfuse Inc.	15	550 mV @ 15 A	60 V	125°C	Active	ROHS3
MBR1560CT	Taiwan Semiconductor	15	750 mV @ 7.5 A	60 V	150°C	Discontinued	ROHS3
MBR2060CTG	onsemi	10	850 mV @ 10 A	60 V	175°C	Active	ROHS3
MBR2560CT	Diodes Incorporated	15	750 mV @ 15 A	60 V	150°C	Obsolete	ROHS3
MBR30L60CTG	onsemi	15	620 mV @ 15 A	60 V	150°C	Obsolete	ROHS3
MBR40L60CTG	onsemi	20	610 mV @ 20 A	60 V	150°C	Active	ROHS3
STPS20L60CT	STMicroelectronics	10	600 mV @ 10 A	60 V	150°C	Active	ROHS3
STPS30H60CT	STMicroelectronics	15	660 mV @ 15 A	60 V	175°C	Active	ROHS3
STPS30M60CT	STMicroelectronics	15	590 mV @ 15 A	60 V	150°C	Obsolete	ROHS3
STPS40M60CT	STMicroelectronics	20	595 mV @ 20 A	60 V	150°C	Active	ROHS3
STPS41L60CT	STMicroelectronics	20	600 mV @ 20 A	60 V	150°C	Active	ROHS3

Engineering Selection Recommendations

Recommended Active Substitutes (Preferred Selection):

STPS30H60CT (STMicroelectronics) - Primary recommendation
- Matches 15A current rating
- Active product status with 19124 units in stock
- Forward voltage 660 mV @ 15A (within acceptable range)
- Maximum junction temperature 175°C (exceeds DST3060LC specification)
- ROHS3 compliant
STPS40M60CT (STMicroelectronics) - For higher current margin applications
- 20A current rating provides 33% current margin over 15A requirement
- Active product status with 2600 units in stock
- Forward voltage 595 mV @ 20A (superior to DST3060LC)
- Maximum junction temperature 150°C
- ROHS3 compliant
MBR40L60CTG (onsemi) - Alternative higher current option
- 20A current rating
- Active product status with 802 units in stock
- Forward voltage 610 mV @ 20A
- Maximum junction temperature 150°C
- ROHS3 compliant

Secondary Substitutes (Limited Current Applications):

STPS20L60CT (STMicroelectronics) - For 10A maximum applications
- 10A current rating (reduced from 15A)
- Active product status with 17200 units in stock
- Forward voltage 600 mV @ 10A
- Maximum junction temperature 150°C
- ROHS3 compliant
MBR2060CTG (onsemi) - For 10A maximum applications
- 10A current rating (reduced from 15A)
- Active product status with 8930 units in stock
- Forward voltage 850 mV @ 10A (higher than DST3060LC)
- Maximum junction temperature 175°C
- ROHS3 compliant

Not Recommended:

MBR1560CT: Discontinued at DiGi Electronics
MBR2560CT: Obsolete status
MBR30L60CTG: Obsolete status
STPS30M60CT: Obsolete status

All recommended substitutes maintain TO-220-3 through-hole packaging, 60V reverse voltage rating, 1 Pair Common Cathode configuration, Schottky technology, and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q1: Can STPS20L60CT or MBR2060CTG be used as direct replacements for DST3060LC?

A: These parts are functionally compatible only in applications where the maximum current requirement does not exceed 10A. Both devices maintain the same 60V reverse voltage rating, TO-220-3 package, and Schottky technology. However, the DST3060LC is rated for 15A average rectified current per diode, while these substitutes are rated for 10A. Application-level verification of actual current draw is required before selection.

Q2: What is the significance of forward voltage (Vf) differences between substitute parts?

A: Forward voltage differences affect power dissipation and thermal performance. The DST3060LC specifies 550 mV @ 15A. STPS30H60CT specifies 660 mV @ 15A (110 mV higher), while STPS30M60CT specifies 590 mV @ 15A (40 mV higher). Higher forward voltage results in increased power loss and heat generation. Applications with tight thermal budgets should prioritize parts with lower forward voltage specifications.

Q3: Why are some substitute parts listed as Obsolete or Discontinued?

A: MBR1560CT, MBR2560CT, MBR30L60CTG, and STPS30M60CT are no longer in active production. While inventory may remain available from distributors, these parts are not recommended for new designs due to uncertain long-term availability and lack of manufacturer support. Active status parts are preferred for design flexibility and supply chain reliability.

Q4: Can 20A-rated parts (MBR40L60CTG, STPS40M60CT, STPS41L60CT) be used in place of the 15A DST3060LC?

A: Yes. These parts are fully compatible substitutes with superior current capability. The 20A rating provides additional design margin and thermal headroom. All three parts maintain 60V reverse voltage, TO-220-3 packaging, Schottky technology, and ROHS3 compliance. The higher current rating does not create compatibility issues in applications designed for 15A operation.

Q5: What is the difference between TO-220-3 and TO-220AB packaging designations?

A: TO-220-3 and TO-220AB refer to the same physical package form factor with three leads. The designations are manufacturer-specific nomenclature variations. All parts listed in this reference use compatible TO-220-3 through-hole mounting with identical pin configurations and thermal characteristics.

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance status, matching the DST3060LC specification. This ensures compatibility with RoHS3-regulated applications and supply chains.

Q7: How do operating temperature ranges affect part selection?

A: The DST3060LC specifies -55°C to 125°C junction temperature range. Most substitute parts extend this range to -55°C to 150°C or higher. Extended temperature ranges provide additional design margin but do not create compatibility issues in applications operating within the DST3060LC temperature specification. Applications requiring operation above 125°C should select substitutes with higher maximum junction temperature ratings.

Q8: What is the practical difference between STPS30H60CT and STPS30M60CT?

A: Both parts are 15A Schottky diode arrays with 60V rating in TO-220-3 packaging. STPS30H60CT is Active with 19124 units in stock and 175°C maximum junction temperature. STPS30M60CT is Obsolete with 1900 units in stock and 150°C maximum junction temperature. STPS30H60CT is the preferred selection due to active status and superior thermal rating.

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