ZC2800ETA Equivalent & Substitute Parts

Part Overview

The ZC2800ETA is a Schottky diode manufactured by Diodes Incorporated, rated for 70V DC reverse voltage with 15mA average rectified current in a SOT-23-3 surface mount package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while meeting modern compliance standards.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	70	V
Current - Average Rectified (Io)	15	mA
Voltage - Forward (Vf) (Max) @ If	410 mV @ 1 mA	mV
Current - Reverse Leakage @ Vr	200	nA @ 50 V
Capacitance @ Vr, F	2	pF @ 0V, 1MHz
Technology	Schottky	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Mounting Type	Surface Mount	—
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	—

Substitute Part Grouping Explanation

Substitution eligibility for the ZC2800ETA is determined by the following mandatory parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 70V
Voltage - Forward (Vf) (Max) @ If: Must not exceed 410 mV @ 1 mA
Current - Average Rectified (Io): Must equal or exceed 15mA
Current - Reverse Leakage @ Vr: Must not exceed 200 nA @ 50V
Capacitance @ Vr, F: Must equal 2pF @ 0V, 1MHz

Mechanical Compatibility Criteria:

Package / Case: Must be TO-236-3, SC-59, or SOT-23-3
Mounting Type: Must be Surface Mount
Technology: Must be Schottky

All identified substitute parts meet or exceed these parameters. Substitute parts with higher current ratings (70mA versus 15mA) remain functionally compatible as they operate within the same voltage envelope and package footprint, providing enhanced design margin for the application.

Parameter Comparison

Parameter	ZC2800ETA	BAR18FILM	BAS70,215	BAS70,235	BAS70E6327HTSA1	BAS70E6433HTMA1
Manufacturer	Diodes Incorporated	STMicroelectronics	Nexperia USA Inc.	NXP USA Inc.	Infineon Technologies	Infineon Technologies
Voltage - DC Reverse (Vr) (Max)	70 V	70 V	70 V	70 V	70 V	70 V
Current - Average Rectified (Io)	15 mA	70 mA	70 mA	70 mA	70 mA	70 mA
Voltage - Forward (Vf) (Max) @ If	410 mV @ 1 mA	410 mV @ 1 mA	1 V @ 15 mA	1 V @ 15 mA	1 V @ 15 mA	1 V @ 15 mA
Current - Reverse Leakage @ Vr	200 nA @ 50 V	200 nA @ 50 V	10 µA @ 70 V	10 µA @ 70 V	100 nA @ 50 V	100 nA @ 50 V
Capacitance @ Vr, F	2 pF @ 0V, 1MHz	2 pF @ 0V, 1MHz	2 pF @ 0V, 1MHz	2 pF @ 0V, 1MHz	2 pF @ 0V, 1MHz	2 pF @ 0V, 1MHz
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: BAR18FILM (STMicroelectronics)

The BAR18FILM is the most direct electrical equivalent to the ZC2800ETA. It maintains identical forward voltage characteristics (410 mV @ 1 mA) and reverse leakage current (200 nA @ 50 V), ensuring minimal circuit behavior deviation. The part is in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Current inventory of 47,703 units supports immediate procurement.

Secondary Recommendations: BAS70,215 and BAS70,235

Both Nexperia and NXP variants of the BAS70 series provide active production alternatives with ROHS3 compliance. These parts exhibit higher reverse leakage current (10 µA @ 70 V) compared to the original specification but maintain identical voltage ratings and package compatibility. The BAS70,235 offers the largest inventory availability (269,830 units) in bulk packaging.

Tertiary Recommendations: BAS70E6327HTSA1 and BAS70E6433HTMA1

The Infineon BAS70 variants provide enhanced performance characteristics including reduced reverse leakage (100 nA @ 50 V) and specified reverse recovery time (100 ps). Both parts are ROHS3 compliant with active production status. Operating temperature range extends to -55°C to 125°C, providing broader thermal operating envelope than the original part.

Compliance Consideration:

The ZC2800ETA is RoHS non-compliant. All substitute parts listed are ROHS3 compliant or have unspecified RoHS status, supporting transition to modern regulatory requirements. REACH status is unaffected for all parts in this substitution group.

Frequently Asked Questions (FAQ)

Q: Can the ZC2800ETA be directly replaced with any of the listed substitute parts?

A: Yes. All listed substitute parts maintain the required 70V reverse voltage rating, SOT-23-3 package footprint, and surface mount configuration. The ZC2800ETA operates at 15mA maximum current; all substitutes are rated for 70mA, providing design margin without circuit modification.

Q: What is the primary difference between BAR18FILM and the BAS70 variants?

A: BAR18FILM maintains identical forward voltage (410 mV @ 1 mA) and reverse leakage current (200 nA @ 50 V) specifications to the original ZC2800ETA. BAS70 variants exhibit higher reverse leakage (10 µA @ 70 V for Nexperia/NXP; 100 nA @ 50 V for Infineon) but offer active production status and enhanced compliance certifications.

Q: Are there package compatibility concerns when substituting these parts?

A: No. All substitute parts use TO-236-3, SC-59, or SOT-23-3 package designations, which are mechanically and electrically equivalent. PCB footprints and solder reflow profiles remain unchanged.

Q: Which substitute part offers the best long-term availability?

A: BAS70,235 (NXP USA Inc.) maintains the highest inventory level at 269,830 units and is in active production status. This part is suitable for high-volume applications requiring sustained procurement.

Q: Does forward voltage difference between BAR18FILM and BAS70 variants affect circuit operation?

A: Forward voltage differences are application-dependent. BAR18FILM maintains 410 mV @ 1 mA matching the original specification. BAS70 variants specify 1 V @ 15 mA, representing a higher measurement point. For low-current applications below 1 mA, BAR18FILM provides closer electrical behavior to the ZC2800ETA. For applications operating at or above 15 mA, BAS70 variants are suitable.

Q: Are all substitute parts RoHS compliant?

A: BAR18FILM, BAS70,215, BAS70E6327HTSA1, and BAS70E6433HTMA1 are ROHS3 compliant. BAS70,235 RoHS status is not specified in available documentation. The original ZC2800ETA is RoHS non-compliant.

Q: What is the significance of reverse recovery time (trr) specification in Infineon parts?

A: Reverse recovery time (100 ps) is specified only for Infineon BAS70E6327HTSA1 and BAS70E6433HTMA1 variants. This parameter indicates switching speed performance. For applications requiring fast switching characteristics, Infineon variants provide documented performance data.

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