ES3C Equivalent & Substitute Parts Reference

Part Overview

The ES3C is a general-purpose rectifier diode manufactured by onsemi, rated for 150 V DC reverse voltage and 3 A average rectified current in a surface mount SMC (DO-214AB) package. This part is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute components is necessary for ongoing maintenance, repair, and legacy system support where the original part is no longer available or procurement is limited.

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
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	20	ns
Current - Reverse Leakage @ Vr	10	µA @ 150 V
Capacitance @ Vr, F	45	pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-50°C to 150°C	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the ES3C is determined by the following critical parameters:

Voltage Rating (Vr): The reverse voltage rating must equal or exceed 150 V. Parts rated at 200 V are acceptable as they provide higher voltage margin.

Current Rating (Io): The average rectified current must equal or exceed 3 A. Parts rated at 5 A are acceptable as they provide higher current capacity.

Package Type: All substitutes must use the DO-214AB (SMC) surface mount package to ensure mechanical and electrical compatibility with existing PCB layouts.

Recovery Speed: Fast recovery diodes (≤ 500ns) are preferred for direct substitution. Standard recovery diodes (> 500ns) represent a functional alternative but with different switching characteristics.

Forward Voltage (Vf): Forward voltage drop at rated current should be within acceptable circuit operating margins. Variations between 875 mV and 1.2 V at 3 A are functionally compatible.

Temperature Range: Operating junction temperature range must support the application environment. The ES3C operates from -50°C to 150°C; substitutes with extended ranges (-55°C to 175°C or -65°C to 175°C) are compatible.

Substitutes are grouped into two categories:

Category A - Direct Equivalents (150 V, 3 A): Parts with identical voltage and current ratings, including ER3C-TP, ES3C-13-F, and ES3C-E3/57T.

Category B - Higher Voltage/Current Alternatives (200 V, 3 A or 150 V, 5 A): Parts with elevated ratings that maintain or exceed ES3C specifications, including MURS320T3G, CMR3-02 BK PBFREE, CMR3-02 TR13 PBFREE, STTH302S, and S5DC-13-F.

Category C - Higher Current Alternative (150 V, 5 A): UFS515J/TR13 provides increased current capacity at the same voltage rating.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Temp Range [°C]	Product Status
ES3C	onsemi	150	3	950 @ 3A	Fast Recovery ≤ 500ns	20	10 @ 150V	DO-214AB	-50 to 150	Not For New Designs
MURS320T3G	onsemi	200	3	875 @ 3A	Fast Recovery ≤ 500ns	35	5 @ 200V	DO-214AB	-65 to 175	Active
CMR3-02 BK PBFREE	Central Semiconductor Corp	200	3	1200 @ 3A	Standard Recovery > 500ns	—	5 @ 200V	DO-214AB	-65 to 175	Active
CMR3-02 TR13 PBFREE	Central Semiconductor Corp	200	3	1200 @ 3A	Standard Recovery > 500ns	—	5 @ 200V	DO-214AB	-65 to 175	Active
ER3C-TP	Micro Commercial Co	150	3	950 @ 3A	Fast Recovery ≤ 500ns	35	5 @ 150V	DO-214AB	-50 to 175	Active
ES3C-13-F	Diodes Incorporated	150	3	900 @ 3A	Fast Recovery ≤ 500ns	25	10 @ 150V	DO-214AB	-55 to 150	Active
ES3C-E3/57T	Vishay General Semiconductor - Diodes Division	150	3	900 @ 3A	Fast Recovery ≤ 500ns	30	10 @ 150V	DO-214AB	-55 to 150	Active
S5DC-13-F	Diodes Incorporated	200	5	1150 @ 5A	Standard Recovery > 500ns	—	10 @ 200V	DO-214AB	-65 to 150	Active
STTH302S	STMicroelectronics	200	3	950 @ 3A	Fast Recovery ≤ 500ns	35	3 @ 200V	DO-214AB	—	Active
UFS515J/TR13	Microchip Technology	150	5	950 @ 5A	Fast Recovery ≤ 500ns	30	10 @ 150V	DO-214AB	-55 to 175	Active

Engineering Selection Recommendations

Direct Substitutes (Recommended for Legacy System Maintenance):

ES3C-13-F (Diodes Incorporated) and ES3C-E3/57T (Vishay General Semiconductor - Diodes Division) are the primary direct substitutes. Both maintain 150 V / 3 A ratings, DO-214AB packaging, and fast recovery characteristics. Both are Active products with ROHS3 compliance and unlimited moisture sensitivity rating. ES3C-13-F offers slightly lower forward voltage (900 mV vs. 950 mV), while ES3C-E3/57T provides marginally faster recovery time (30 ns vs. 20 ns). ER3C-TP (Micro Commercial Co) is an additional direct equivalent with identical electrical specifications and Active status.

Higher Voltage Alternatives (200 V Rating):

MURS320T3G (onsemi) provides 200 V / 3 A operation with fast recovery characteristics and lower forward voltage (875 mV). This part is from the original manufacturer and maintains Active product status. STTH302S (STMicroelectronics) offers 200 V / 3 A with fast recovery and the lowest reverse leakage current (3 µA). Both are suitable where circuit design permits higher voltage margin.

Higher Current Alternatives:

UFS515J/TR13 (Microchip Technology) provides 150 V / 5 A operation with fast recovery, maintaining the original voltage rating while increasing current capacity. S5DC-13-F (Diodes Incorporated) offers 200 V / 5 A with standard recovery characteristics, suitable for applications requiring both elevated voltage and current margins.

Standard Recovery Alternatives (200 V, 3 A):

CMR3-02 BK PBFREE and CMR3-02 TR13 PBFREE (Central Semiconductor Corp) both provide 200 V / 3 A operation with standard recovery characteristics (> 500ns). These parts exhibit higher forward voltage (1200 mV) and are suitable only where switching speed is not a critical design parameter. Both are Active products with ROHS3 compliance.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). UFS515J/TR13 is noted as RoHS non-compliant and should be selected only where legacy system requirements explicitly permit non-compliant components.

Frequently Asked Questions (FAQ)

Q: Can I use a 200 V rated diode in place of the 150 V ES3C?

A: Yes. A 200 V rated diode is electrically compatible with a 150 V application. The higher voltage rating provides additional safety margin and does not degrade circuit performance. All 200 V substitutes listed (MURS320T3G, CMR3-02 variants, STTH302S) are mechanically and electrically compatible with ES3C circuit designs.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Recovery speed refers to the reverse recovery time (trr), which is the time required for the diode to transition from conducting to blocking state. Fast recovery diodes (≤ 500ns) are suitable for high-frequency switching applications. Standard recovery diodes (> 500ns) are acceptable for lower-frequency rectification. The ES3C specifies fast recovery; CMR3-02 variants specify standard recovery. Selection depends on circuit switching frequency requirements.

Q: Are all substitutes available in the same packaging?

A: Yes. All substitute parts listed use the DO-214AB (SMC) surface mount package, ensuring direct PCB footprint compatibility. Packaging variants (Tape & Reel, Bulk, Cut Tape) affect procurement and handling but do not affect electrical or mechanical compatibility.

Q: Can I use UFS515J/TR13 (5 A) instead of ES3C (3 A)?

A: Yes. UFS515J/TR13 maintains the 150 V voltage rating while providing increased current capacity (5 A vs. 3 A). This substitution is suitable where circuit design permits higher current capability. The part is mechanically and electrically compatible with ES3C applications.

Q: What is the impact of forward voltage differences between substitutes?

A: Forward voltage (Vf) variations between 875 mV and 1200 mV at rated current affect power dissipation and circuit voltage drop. Lower forward voltage (875 mV in MURS320T3G) reduces heat generation. Higher forward voltage (1200 mV in CMR3-02 variants) increases voltage drop across the diode. Selection depends on circuit power budget and thermal management requirements. For most general-purpose rectification applications, variations within this range are acceptable.

Q: Is the ES3C still available for new procurement?

A: The ES3C is classified as "Not For New Designs" by onsemi, indicating end-of-life status. New designs should specify one of the Active substitute parts listed. For legacy system maintenance and repair, ES3C inventory may be available through authorized distributors, but long-term availability is not guaranteed.

Q: What is the difference between ES3C-13-F and ES3C-E3/57T?

A: Both are direct ES3C equivalents from different manufacturers (Diodes Incorporated and Vishay, respectively). ES3C-13-F offers slightly lower forward voltage (900 mV vs. 950 mV). ES3C-E3/57T provides marginally faster recovery time (30 ns vs. 20 ns). Both maintain 150 V / 3 A ratings, fast recovery characteristics, and Active product status. Selection between these parts is based on availability and procurement preference.

Q: Can I substitute STTH302S for ES3C in all applications?

A: STTH302S is electrically compatible as a 200 V / 3 A fast recovery diode with DO-214AB packaging. The primary difference is the higher voltage rating (200 V vs. 150 V), which provides additional margin. STTH302S exhibits the lowest reverse leakage current (3 µA) among all substitutes, making it suitable for low-leakage applications. Operating temperature range is not specified in available data; verify maximum junction temperature against application requirements before selection.

Q: What does ROHS3 compliance mean?

A: ROHS3 (Restriction of Hazardous Substances Directive 3) compliance indicates the component meets European Union restrictions on hazardous materials, including lead, cadmium, mercury, and certain flame retardants. All recommended substitutes except UFS515J/TR13 are ROHS3 compliant. For applications requiring compliance with environmental regulations, select ROHS3-compliant parts.

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