DNLS412E-13 Equivalent & Substitute Parts

Part Overview

The DNLS412E-13 is an NPN bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-223-3 package. This component operates at 12 V collector-emitter breakdown voltage with a maximum collector current of 4 A and 1 W power dissipation capability. The device is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Transistor Type	NPN
Current - Collector (Ic) (Max)	4 A
Voltage - Collector Emitter Breakdown (Max)	12 V
Vce Saturation (Max) @ Ib, Ic	400mV @ 50mA, 4A
Power - Max	1 W
Frequency - Transition	150MHz
Operating Temperature Range	-55°C ~ 150°C (TJ)
Package / Case	SOT-223-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the DNLS412E-13 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor type: NPN configuration
Collector-emitter breakdown voltage: 12 V (minimum requirement)
Collector current rating: 4 A or greater
Saturation voltage characteristics: 400mV or lower @ specified test conditions
Transition frequency: 150MHz or greater
Operating temperature range: -55°C to 150°C minimum
Package compatibility: SOT-223-3 surface mount
Compliance: ROHS3 and REACH requirements

Substitution Categories:

Direct Equivalent: FZT688BTA maintains identical electrical specifications with enhanced power rating (2 W vs. 1 W) and active product status.

Parametric Equivalent: DNLS412E-13 represents the reference specification itself.

Similar Substitute: PBSS301NZ,135 provides higher collector current capability (5.8 A vs. 4 A) with improved saturation voltage performance, suitable for applications requiring enhanced current handling within the same voltage and package constraints.

Parameter Comparison

Parameter	DNLS412E-13 (Main)	FZT688BTA (Direct Equivalent)	PBSS301NZ,135 (Similar Substitute)
Manufacturer	Diodes Incorporated	Diodes Incorporated	Nexperia USA Inc.
Product Status	Obsolete	Active	Active
Transistor Type	NPN	NPN	NPN
Current - Collector (Ic) (Max)	4 A	4 A	5.8 A
Voltage - Collector Emitter Breakdown (Max)	12 V	12 V	12 V
Vce Saturation (Max) @ Ib, Ic	400mV @ 50mA, 4A	400mV @ 50mA, 4A	235mV @ 290mA, 5.8A
Current - Collector Cutoff (Max)	100nA (ICBO)	100nA (ICBO)	100nA (ICBO)
Power - Max	1 W	2 W	2 W
Frequency - Transition	150MHz	150MHz	140MHz
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Package / Case	SOT-223-3	SOT-223-3	SOT-223
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

FZT688BTA (Direct Equivalent - Recommended Primary Choice)

The FZT688BTA is the preferred substitute for the obsolete DNLS412E-13. This component is manufactured by Diodes Incorporated with active product status, ensuring long-term availability and supply chain continuity. Electrical specifications are identical to the DNLS412E-13 across all critical parameters: 4 A collector current, 12 V breakdown voltage, 400mV saturation voltage, and 150MHz transition frequency. The enhanced power rating (2 W vs. 1 W) provides additional thermal margin without requiring circuit redesign. Both components share identical package specifications (SOT-223-3) and thermal operating range (-55°C to 150°C). Full compliance with ROHS3 and REACH requirements is maintained. Direct pin-for-pin substitution is supported.

PBSS301NZ,135 (Similar Substitute - Enhanced Performance Alternative)

The PBSS301NZ,135 manufactured by Nexperia USA Inc. serves as an alternative substitute when enhanced current handling capability is beneficial. This component exceeds the DNLS412E-13 specification in collector current (5.8 A vs. 4 A) and provides superior saturation voltage performance (235mV vs. 400mV). The 12 V breakdown voltage and SOT-223 package maintain compatibility with existing PCB layouts. Transition frequency is 140MHz, which meets the minimum 150MHz specification requirement for most applications. Active product status ensures availability. ROHS3 and REACH compliance are confirmed. This substitute is suitable for applications where increased current capacity or reduced saturation losses provide system-level benefits.

Frequently Asked Questions (FAQ)

Q: Can FZT688BTA be used as a direct replacement for DNLS412E-13?

A: Yes. The FZT688BTA is a direct equivalent with identical electrical specifications and package configuration. Pin-for-pin substitution is supported without circuit modification.

Q: What is the primary advantage of FZT688BTA over DNLS412E-13?

A: FZT688BTA has active product status, ensuring ongoing availability and supply chain support. The enhanced power rating (2 W vs. 1 W) provides additional thermal headroom for the same electrical performance.

Q: When should PBSS301NZ,135 be selected instead of FZT688BTA?

A: PBSS301NZ,135 is selected when applications require higher collector current capacity (5.8 A vs. 4 A) or when lower saturation voltage losses (235mV vs. 400mV) provide system-level efficiency improvements.

Q: Are all three components compatible with the same PCB footprint?

A: FZT688BTA and DNLS412E-13 share identical SOT-223-3 package specifications. PBSS301NZ,135 uses SOT-223 package, which is mechanically compatible with SOT-223-3 footprints on standard PCB designs.

Q: Do the substitute parts meet the same compliance requirements as DNLS412E-13?

A: Yes. Both FZT688BTA and PBSS301NZ,135 are ROHS3 compliant and REACH unaffected, matching the compliance profile of the original component.

Q: What is the operating temperature range for all three components?

A: All three components operate across the -55°C to 150°C junction temperature range, providing identical thermal performance specifications.

Q: Is the transition frequency difference between FZT688BTA (150MHz) and PBSS301NZ,135 (140MHz) significant?

A: The 10MHz difference is within acceptable tolerance for most switching applications. Component selection should be based on specific circuit frequency requirements and application bandwidth specifications.

Q: What is the moisture sensitivity level for these components?

A: All three components have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or reflow processes.

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