Equivalent & Substitute Parts for RLS4448TE-11

Part Overview

RLS4448TE-11 is a surface-mount general-purpose diode manufactured by Rohm Semiconductor, classified under diodes, rectifiers. With a maximum DC reverse voltage of 75 V and an average rectified current of 150 mA, this component features fast reverse recovery time and low capacitance. The product status is marked obsolete, making it necessary to identify viable substitute parts to maintain inventory continuity and ensure design compatibility in applications requiring diode rectification and switching within the specified electrical and mechanical constraints.

Key Parameters

Parameter	Value
Manufacturer Part Number	RLS4448TE-11
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	75 V
Current - Average Rectified (Io)	150 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA
Reverse Recovery Time (trr)	4 ns
Current - Reverse Leakage @ Vr	5 µA @ 75 V
Capacitance @ Vr, F	4 pF @ 0 V, 1 MHz
Mounting Type	Surface Mount
Package / Case	DO-213AC, MINI-MELF, SOD-80
Supplier Device Package	LLDS
Operating Temperature - Junction	-65°C ~ 200°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Substitute parts for RLS4448TE-11 are identified strictly based on electrical, mechanical, and compliance parameters. The substitution logic requires matching or exceeding these criteria: diode category, surface-mount configuration, equivalent package type (DO-213AC, MINI-MELF, SOD-80), voltage and current ratings, reverse recovery time, capacitance, leakage current, operating temperature range, and relevant RoHS/REACH certifications. Only parts explicitly listed and sharing these core parameters are included.

Parameter Comparison

Parameter	RLS4448TE-11 Rohm Semiconductor	FDLL4148 onsemi	PMLL4448,115 Nexperia USA Inc.	PMLL4448,135 Nexperia USA Inc.
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	75 V	100 V	75 V	75 V
Current - Average Rectified (Io)	150 mA	200 mA	200 mA	200 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA	1 V @ 10 mA	1 V @ 100 mA	1 V @ 100 mA
Reverse Recovery Time (trr)	4 ns	4 ns	4 ns	4 ns
Current - Reverse Leakage @ Vr	5 µA @ 75 V	5 µA @ 75 V	25 nA @ 20 V	25 nA @ 20 V
Capacitance @ Vr, F	4 pF @ 0 V, 1 MHz	4 pF @ 0 V, 1 MHz	4 pF @ 0 V, 1 MHz	4 pF @ 0 V, 1 MHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80
Supplier Device Package	LLDS	SOD-80	LLDS; MiniMelf	LLDS; MiniMelf
Operating Temperature - Junction	-65°C ~ 200°C	-55°C ~ 175°C	200°C (Max)	200°C (Max)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99	EAR99

Engineering Selection Recommendations

The primary part, RLS4448TE-11, is classified as obsolete. All listed substitute parts (FDLL4148, PMLL4448,115, PMLL4448,135) are compliant with ROHS3, REACH Unaffected, and MSL 1 (Unlimited). Substitute parts have active product status. Further selection should rely strictly on electrical ratings, compliance status, and package compatibility as provided. No additional selection criteria are specified.

Frequently Asked Questions (FAQ)

Q: What electrical parameters are required to select a substitute for RLS4448TE-11?
A: Substitute selection requires matching or exceeding voltage - DC reverse (Vr), current - average rectified (Io), reverse recovery time (trr), voltage - forward (Vf) at specified forward current, reverse leakage current, and capacitance.

Q: Are these substitutes compatible in terms of package and mounting type?
A: All substitutes use surface-mount configuration and conform to DO-213AC, MINI-MELF, SOD-80 package standards. Supplier device packages LLDS, SOD-80, and MiniMelf are specified.

Q: Do the substitutes provide equal or better operating temperature ranges?
A: Substitutes list operating junction temperatures of -55°C to 175°C or up to 200°C (Max), complying with or exceeding original part requirements.

Q: How are RoHS and REACH compliance relevant to substitution?
A: All substitute diodes are ROHS3 compliant and REACH unaffected, ensuring regulatory conformity within the designated product category.

Q: Is there any difference in moisture sensitivity level between substitutes?
A: All substitutes and the main part have Moisture Sensitivity Level 1 (Unlimited), suitable for standard assembly and storage conditions.

Q: What is the significance of the ECCN designation in selection?
A: All part numbers provided carry an ECCN of EAR99, indicating no export restrictions for standard commercial applications.

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