Equivalent & Substitute Parts for CD1607-B140LLF Diode Rectifier

Part Overview

CD1607-B140LLF is a Schottky diode in the rectifiers category manufactured by Bourns Inc. It features a reverse voltage of 40 V, an average rectified current of 1 A, and is provided in the 1607 surface mount package (SOD-123T). The product has been designated obsolete, making it necessary to identify alternative models with matching key performance indicators and compliance qualifications to maintain functional continuity in designs and inventory management.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	1A
Voltage - Forward (Vf) (Max) @ If	400 mV @ 1 A
Speed	Fast Recovery =< 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 40 V
Capacitance @ Vr, F	110pF @ 4V, 1MHz
Mounting Type	Surface Mount
Package / Case	SOD-123T
Supplier Device Package	1607
Operating Temperature - Junction	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)
REACH Status	REACH Affected

Substitute Part Grouping Explanation

Substitute parts for CD1607-B140LLF are identified strictly based on the following parameters: technology (Schottky), maximum reverse voltage, average rectified current, maximum forward voltage at rated current, speed class, reverse leakage current, capacitance, mounting type, package/case, operating temperature range, and compliance categories (RoHS, MSL, REACH). Only components matching these parameters as provided are considered valid for substitution in electronic circuit designs in this product category.

Parameter Comparison

Parameter	CD1607-B140LLF Bourns Inc.	CD123D-B140LR Bourns Inc.	MBRA140T3G onsemi	SS14 SMC Diode Solutions
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	100 V
Current - Average Rectified (Io)	1A	1A	1A	1A
Voltage - Forward (Vf) (Max) @ If	400 mV @ 1 A	380 mV @ 1 A	550 mV @ 1 A	850 mV @ 1 A
Speed	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 40 V	1 mA @ 40 V	500 µA @ 40 V	500 µA @ 100 V
Capacitance @ Vr, F	110pF @ 4V, 1MHz	115pF @ 4V, 1MHz	-	50pF @ 4V, 1MHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-123T	Chip, Concave Terminals	DO-214AC, SMA	DO-214AC, SMA
Supplier Device Package	1607	123D	SMA	SMA (DO-214AC)
Operating Temperature - Junction	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Affected	REACH Affected	REACH Unaffected	REACH Affected

Engineering Selection Recommendations

The main part, CD1607-B140LLF, is obsolete. Substitute parts CD123D-B140LR, MBRA140T3G, and SS14 are active and available. All substitute parts are ROHS3 compliant with Moisture Sensitivity Level (MSL) 1, supporting unlimited floor life. REACH status varies between Affected and Unaffected; consult the provided parameter table to ensure REACH alignment per application requirements. Only parts with matching compliance, MSL, and operating temperature specifications as indicated in the parameter table have been included.

Frequently Asked Questions (FAQ)

Q1: What are the key criteria for substituting the CD1607-B140LLF diode rectifier?
A1: Substitute parts must use Schottky technology, support at least 40 V reverse voltage, handle 1 A average rectified current, exhibit fast recovery characteristics, and maintain equivalent compliance characteristics (ROHS3, MSL 1, REACH status).

Q2: How important is package compatibility when selecting a substitute?
A2: Package type, mounting configuration, and supplier device package must be assessed to confirm compatibility with existing PCB footprints and assembly processes.

Q3: Are all substitute parts guaranteed to have identical electrical performance?
A3: Substitute parts are matched by the supplied maximum ratings and core parameters. Refer to the comparison table to verify voltage, current, forward voltage, leakage, and capacitance values.

Q4: How does REACH status affect component selection?
A4: REACH status must match the regulatory requirements of the final product or target geography. Check the parameter table for each part's REACH designation.

Q5: Is there a difference between diode recovery speed and response time among the listed substitutes?
A5: All listed substitutes specify fast recovery =<500ns at >200mA (Io), aligning with the original part's recovery performance as given.

Q6: Are there any differences in environmental compliance among these parts?
A6: All are ROHS3 compliant and rated MSL 1 (unlimited). REACH status may differ, as shown in the parameter table.

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