ER3AB-TP Equivalent & Substitute Parts Reference

Part Overview

ER3AB-TP is a surface mount diode in the DO-214AA (SMB) package from Micro Commercial Co, categorized under Diodes, Rectifiers. Rated for 50 V reverse voltage and 3A average rectified current, it features fast recovery characteristics and is suitable for interface applications. The series is now classified as obsolete, which necessitates selection of alternative models to ensure continued manufacturability and maintenance support for designs that specify this part.

Key Parameters

Parameter	Main Part (ER3AB-TP)	Category Criteria
Voltage - DC Reverse (Vr) (Max)	50 V	Rated reverse voltage for device protection
Current - Average Rectified (Io)	3A	Continuous operating current
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	Maximum forward voltage drop at specified current
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Recovery characteristics for switching
Reverse Recovery Time (trr)	35 ns	Time to recover from conduction to blocking
Current - Reverse Leakage @ Vr	5 µA @ 50 V	Leakage current at maximum rated reverse voltage
Capacitance @ Vr, F	45pF @ 4V, 1MHz	Parasitic capacitance for signal path impact
Mounting Type	Surface Mount	Physical interface for device placement
Package / Case	DO-214AA (SMB)	Mechanical footprint compatibility
Operating Temperature - Junction	-55°C ~ 150°C	Thermal environmental suitablity
Product Status	Obsolete	Lifecycle impact on supply continuity

Substitute Part Grouping Explanation

Substitute selection for ER3AB-TP is governed by strict adherence to the following parameters: reverse voltage rating, average rectified current, forward voltage at rated current, recovery speed, reverse recovery time, reverse leakage current, capacitance, mounting type, case package, and operating temperature range. Compatibility across all these fields is mandatory for functional and physical interchangeability in Diodes, Rectifiers applications. Only models matching or exceeding these specifications and conforming to identical mechanical standards in DO-214AA (SMB) package are considered as equivalent substitutes.

Parameter Comparison

Parameter	ER3AB-TP	ER3DB-TP
Manufacturer	Micro Commercial Co	Micro Commercial Co
Category	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	50 V	200 V
Current - Average Rectified (Io)	3A	3A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	950 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 50 V	5 µA @ 200 V
Capacitance @ Vr, F	45pF @ 4V, 1MHz	45pF @ 4V, 1MHz
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-214AA (SMB)	DO-214AA (SMB)
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Obsolete	Active
Base Product Number	ER3A	ER3D
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8541.10.0080	8541.10.0080

Engineering Selection Recommendations

Selection is determined by product lifecycle status and compliance. ER3AB-TP is obsolete; ER3DB-TP is active. Both parts are REACH unaffected and share ECCN and HTSUS code classifications, confirming regulatory compliance for substitution within the -55°C to 150°C junction temperature range. ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) are specified for the substitute, aligning it with current environmental and manufacturing requirements.

Frequently Asked Questions (FAQ)

Q1: What criteria must be met to substitute ER3AB-TP with another diode rectifier?
Substitution requires exact matching or exceeding of voltage, current, forward voltage drop, reverse recovery time, leakage, capacitance, and package type. Regulatory and environmental compliance must also align.

Q2: Is the DO-214AA (SMB) package necessary when selecting a substitute?
Yes, mechanical compatibility mandates the DO-214AA (SMB) package for surface mount applications to ensure fit and process alignment.

Q3: How does reverse voltage rating influence substitute suitability?
The substitute diode must support at least the original part’s reverse voltage rating; a higher rating is compatible, pending other electrical criteria.

Q4: Does product status affect choice between ER3AB-TP and ER3DB-TP?
Yes, ER3AB-TP is obsolete; ER3DB-TP is active, making it suitable for new designs and ongoing production requirements.

Q5: Are there any compliance or certification differences affecting substitution?
ER3DB-TP specifies ROHS3 compliance and MSL 1, aligning with modern environmental and assembly standards. Both parts are REACH unaffected and share export classifications.

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