ES3C Equivalent & Substitute Parts Reference

Part Overview

The ES3C is a general-purpose rectifier diode rated for 150 V DC reverse voltage and 3 A average rectified current, packaged in the DO-214AB (SMC) surface mount configuration. This diode features fast recovery characteristics with a reverse recovery time of 35 ns, making it suitable for standard switching and rectification applications. The ES3C from SMC Diode Solutions is currently listed as obsolete, necessitating identification of active equivalent and substitute parts to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 150 V
Capacitance @ Vr, F	45	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Technology	Standard	—

Substitute Part Grouping Explanation

Substitution of the obsolete ES3C is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 150 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 950 mV @ 3 A
Reverse Recovery Time (trr): 35 ns
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Technology: Standard

Acceptable Variation Parameters:

Current - Reverse Leakage @ Vr: Variations within 1–10 µA @ 150 V are acceptable for general-purpose applications
Operating Temperature - Junction: Range variations between -55°C to -65°C minimum and 150°C maximum are acceptable
Packaging format: Tape & Reel (TR) is functionally equivalent to bulk packaging for surface mount assembly

Substitute parts meeting all mandatory criteria are classified as direct equivalents and may be used interchangeably in the same circuit application without design modification.

Parameter Comparison

Parameter	ES3C (SMC)	ER3C (SMC)	ER3C_R1_00001 (Panjit)	ES3C (Taiwan Semi)	ES3CH (Taiwan Semi)
Voltage - DC Reverse (Vr) (Max)	150 V	150 V	150 V	150 V	150 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	950 mV @ 3 A	950 mV @ 3 A	950 mV @ 3 A	950 mV @ 3 A
Reverse Recovery Time (trr)	35 ns	35 ns	35 ns	35 ns	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 150 V	5 µA @ 150 V	1 µA @ 150 V	10 µA @ 150 V	10 µA @ 150 V
Capacitance @ Vr, F	45 pF @ 4V, 1MHz	45 pF @ 4V, 1MHz	45 pF @ 4V, 1MHz	45 pF @ 4V, 1MHz	45 pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150°C	-65 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	—	—	—	AEC-Q101

Engineering Selection Recommendations

ER3C (SMC Diode Solutions) is the primary direct substitute for the obsolete ES3C. This part maintains identical electrical specifications and is manufactured by the same supplier. The ER3C is in active production status with ROHS3 compliance and REACH affected designation. The extended operating temperature range (-65°C to 150°C) provides additional thermal margin compared to the original ES3C specification.

ER3C_R1_00001 (Panjit International Inc.) is a parametric equivalent offering superior reverse leakage characteristics (1 µA versus 5 µA @ 150 V), resulting in lower power dissipation in reverse bias conditions. This part is ROHS3 compliant and REACH unaffected. The tighter leakage specification makes this part suitable for applications requiring enhanced efficiency or extended battery life.

ES3C (Taiwan Semiconductor Corporation) provides an alternative source from a different manufacturer while maintaining all critical electrical parameters. This part is in active production with ROHS3 compliance and REACH unaffected status. The reverse leakage specification is 10 µA @ 150 V, which remains within acceptable limits for standard rectification applications.

ES3CH (Taiwan Semiconductor Corporation) is an automotive-grade variant qualified to AEC-Q101 standard. This part is suitable for automotive and harsh environment applications requiring enhanced reliability qualification. All electrical parameters remain identical to the standard ES3C variant.

Selection between these substitutes depends on application requirements: use ER3C for direct SMC source continuity, ER3C_R1_00001 for improved leakage performance, ES3C for alternative sourcing, or ES3CH for automotive applications requiring AEC-Q101 qualification.

Frequently Asked Questions (FAQ)

Q: Can the ER3C directly replace the obsolete ES3C without circuit modification?

A: Yes. The ER3C maintains identical electrical specifications across all critical parameters: 150 V reverse voltage, 3 A average rectified current, 950 mV forward voltage drop, and 35 ns reverse recovery time. Both parts use the DO-214AB (SMC) surface mount package. No circuit design changes are required.

Q: What is the difference between ER3C and ER3C_R1_00001?

A: Both parts meet the same voltage and current ratings. The primary difference is reverse leakage current: ER3C_R1_00001 specifies 1 µA @ 150 V compared to 5 µA @ 150 V for ER3C. This lower leakage in the Panjit part results in reduced reverse bias power dissipation. The ER3C_R1_00001 also has a different manufacturer (Panjit International Inc. versus SMC Diode Solutions).

Q: Are the Taiwan Semiconductor ES3C and ES3CH variants suitable for all applications?

A: Both Taiwan Semiconductor variants meet the core electrical specifications. The ES3CH includes AEC-Q101 automotive qualification, making it mandatory for automotive applications. The standard ES3C variant is suitable for general industrial and consumer applications. Both specify 10 µA reverse leakage, which is acceptable for standard rectification but higher than the SMC variants.

Q: What does the Tape & Reel (TR) packaging mean for the ER3C?

A: Tape & Reel packaging is a standard format for automated surface mount assembly. The diodes are supplied on continuous tape wound on reels, enabling high-speed pick-and-place machine processing. This packaging format is functionally equivalent to bulk packaging for the same surface mount component and does not affect electrical performance or compatibility.

Q: Can I use ES3CH in non-automotive applications?

A: Yes. The ES3CH meets all electrical specifications required for general-purpose rectification. The AEC-Q101 qualification indicates enhanced reliability testing and is not restricted to automotive use. The ES3CH can be used in any application where the ES3C or other equivalents are suitable.

Q: What is the significance of the operating temperature range difference between ER3C (-65°C to 150°C) and ES3C (-55°C to 150°C)?

A: The ER3C provides a 10°C lower minimum operating temperature specification, extending the usable range to -65°C. For applications operating at or below -55°C, the ER3C is the appropriate selection. For applications within the -55°C to 150°C range, both parts are functionally equivalent.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts listed (ER3C, ER3C_R1_00001, ES3C, and ES3CH) are ROHS3 compliant, meeting current environmental and hazardous substance restrictions. The original obsolete ES3C did not specify RoHS status.

Q: What does REACH affected versus REACH unaffected mean?

A: REACH affected indicates the part is subject to European REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulations and may contain substances of concern requiring documentation. REACH unaffected indicates the part is not subject to these restrictions. Both designations are acceptable; the distinction is relevant only for supply chain documentation and regulatory compliance in European markets.

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