ES3DB-13 Equivalent & Substitute Parts

Part Overview

The ES3DB-13 is a general-purpose rectifier diode rated for 200 V DC reverse voltage and 3 A average rectified current in a surface mount SMB (DO-214AA) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing production and repair applications. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within acceptable parameter ranges for the same application category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	25	ns
Current - Reverse Leakage @ Vr	10	µA @ 200 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the ES3DB-13 is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a minimum DC reverse voltage rating of 200 V to ensure safe operation in the original circuit.

Current Rating: Substitute parts are grouped by average rectified current capacity. Direct equivalents maintain 3 A rating. Parts with lower current ratings (1.5 A, 2 A) are suitable only for applications with reduced current demands. Parts with higher current ratings (4 A) provide design margin and are backward-compatible.

Package and Mounting: All substitutes use the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility with the original PCB layout.

Recovery Speed: Fast recovery diodes (≤ 500 ns) are preferred for switching applications. Standard recovery diodes (> 500 ns) represent a functional downgrade and are listed for reference only.

Forward Voltage: Forward voltage drop variations affect power dissipation and circuit efficiency. Substitutes with forward voltage within ±100 mV of the original specification maintain thermal and performance characteristics.

Compliance Status: RoHS3 compliance and active product status indicate long-term availability and regulatory alignment for new designs.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	Speed	trr	Ir @ Vr	Package	Status	RoHS
ES3DB-13	Diodes Incorporated	200 V	3 A	900 mV @ 3 A	Fast Recovery ≤ 500ns	25 ns	10 µA @ 200 V	DO-214AA, SMB	Discontinued	Non-compliant
ES3DB-13-F	Diodes Incorporated	200 V	3 A	900 mV @ 3 A	Fast Recovery ≤ 500ns	25 ns	10 µA @ 200 V	DO-214AA, SMB	Active	ROHS3 Compliant
ER3DB-TP	Micro Commercial Co	200 V	3 A	950 mV @ 3 A	Fast Recovery ≤ 500ns	35 ns	5 µA @ 200 V	DO-214AA, SMB	Active	ROHS3 Compliant
S3DB-TP	Micro Commercial Co	200 V	3 A	1.15 V @ 3 A	Standard Recovery > 500ns	—	10 µA @ 200 V	DO-214AA, SMB	Not For New Designs	ROHS3 Compliant
STTH1R02U	STMicroelectronics	200 V	1.5 A	1 V @ 1.5 A	Fast Recovery ≤ 500ns	30 ns	3 µA @ 200 V	DO-214AA, SMB	Active	ROHS3 Compliant
STTH2R02U	STMicroelectronics	200 V	2 A	1 V @ 2 A	Fast Recovery ≤ 500ns	30 ns	3 µA @ 200 V	DO-214AA, SMB	Active	ROHS3 Compliant
STTH4R02U	STMicroelectronics	200 V	4 A	1.05 V @ 4 A	Fast Recovery ≤ 500ns	30 ns	3 µA @ 200 V	DO-214AA, SMB	Active	ROHS3 Compliant
STTH4R02UY	STMicroelectronics	200 V	4 A	1.05 V @ 4 A	Fast Recovery ≤ 500ns	30 ns	3 µA @ 200 V	DO-214AA, SMB	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent (Preferred for Replacement):

ES3DB-13-F is the direct equivalent of the discontinued ES3DB-13. Both parts are manufactured by Diodes Incorporated with identical electrical specifications: 200 V reverse voltage, 3 A average rectified current, 900 mV forward voltage at 3 A, and 25 ns reverse recovery time. The primary difference is product status and compliance: ES3DB-13-F is active and RoHS3 compliant, whereas the original ES3DB-13 is discontinued and RoHS non-compliant. ES3DB-13-F is available in Cut Tape and Digi-Reel packaging formats with 32,100 units in stock.

Functionally Equivalent Alternatives (Same Current Rating):

ER3DB-TP (Micro Commercial Co) maintains the 3 A current rating and 200 V voltage specification with fast recovery characteristics. Forward voltage is 950 mV at 3 A (50 mV higher than the original), and reverse recovery time is 35 ns (10 ns longer). Reverse leakage current is lower at 5 µA. This part is active and RoHS3 compliant.

S3DB-TP (Micro Commercial Co) also maintains 3 A and 200 V ratings but uses standard recovery technology (> 500 ns) rather than fast recovery. Forward voltage is significantly higher at 1.15 V, resulting in increased power dissipation. This part is marked "Not For New Designs" and represents a functional downgrade suitable only for legacy applications where recovery speed is not critical.

Current-Rated Alternatives (Different Current Ratings):

STTH1R02U (STMicroelectronics) is rated for 1.5 A and is suitable only for applications with reduced current requirements. STTH2R02U is rated for 2 A and provides partial current margin. Both maintain 200 V voltage rating, fast recovery characteristics, and RoHS3 compliance.

STTH4R02U and STTH4R02UY (STMicroelectronics) are rated for 4 A, providing 33% design margin above the original 3 A specification. Both maintain 200 V voltage rating and fast recovery characteristics. STTH4R02UY includes automotive-grade qualification and extended temperature range (-40°C to 175°C) compared to the standard STTH4R02U. Both are RoHS3 compliant and widely available (20,100 and 109,754 units respectively).

Compliance Consideration:

All active substitute parts listed are RoHS3 compliant, addressing regulatory requirements for new designs. The original ES3DB-13 is RoHS non-compliant; replacement with a compliant equivalent is necessary for products subject to RoHS directives.

Frequently Asked Questions (FAQ)

Q: Can ES3DB-13-F be used as a direct replacement for ES3DB-13?

A: Yes. ES3DB-13-F is the direct equivalent with identical electrical specifications and the same DO-214AA (SMB) package. The only differences are active product status and RoHS3 compliance. No circuit modifications are required.

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

A: Fast recovery diodes have reverse recovery times ≤ 500 ns, reducing switching losses and electromagnetic interference in high-frequency applications. Standard recovery diodes (> 500 ns) have higher switching losses. The ES3DB-13 specifies fast recovery; S3DB-TP uses standard recovery and is suitable only for low-frequency or DC applications where recovery speed is not critical.

Q: Can I use STTH4R02U or STTH4R02UY instead of ES3DB-13?

A: Yes, for applications where the circuit can tolerate higher current capacity. Both parts maintain 200 V voltage rating and fast recovery characteristics. The 4 A rating provides design margin and is backward-compatible with 3 A circuits. STTH4R02UY includes automotive-grade qualification if required.

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

A: Forward voltage affects power dissipation and heat generation. ES3DB-13 specifies 900 mV at 3 A. ER3DB-TP is 950 mV (50 mV higher), and S3DB-TP is 1.15 V (250 mV higher). Higher forward voltage increases power loss as P = Vf × I. For 3 A circuits, the difference between 900 mV and 950 mV is 150 mW; between 900 mV and 1.15 V is 750 mW. Thermal design must account for this increase.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical compatibility. Packaging formats differ: ES3DB-13-F is available in Cut Tape and Digi-Reel; ER3DB-TP and S3DB-TP are supplied on Tape & Reel; STMicroelectronics parts are available in Cut Tape and Digi-Reel (STTH2R02U, STTH4R02U, STTH4R02UY) or Tape & Reel (STTH1R02U). Verify packaging availability with your supplier.

Q: Why is STTH4R02UY listed separately from STTH4R02U?

A: STTH4R02UY includes automotive-grade qualification (Series Q) and extended operating temperature range (-40°C to 175°C) compared to STTH4R02U. Both have identical electrical specifications and 4 A current rating. STTH4R02UY is required for automotive applications; STTH4R02U is suitable for industrial and consumer applications.

Q: Can I use a lower-rated diode like STTH1R02U or STTH2R02U?

A: Only if your circuit operates at reduced current levels. STTH1R02U is rated for 1.5 A and STTH2R02U for 2 A. Using an undersized diode risks thermal stress, reduced reliability, and potential failure. Use lower-rated parts only when circuit analysis confirms sustained current below the part rating.

Q: What does "Not For New Designs" mean for S3DB-TP?

A: This designation indicates the part is in mature or declining production status and is not recommended for new product development. While S3DB-TP is functionally compatible, it may face future availability constraints. For new designs, select from parts with "Active" status: ES3DB-13-F, ER3DB-TP, or STMicroelectronics alternatives.

Q: How do I choose between Diodes Incorporated and STMicroelectronics substitutes?

A: Both manufacturers provide RoHS3-compliant alternatives. Diodes Incorporated (ES3DB-13-F, ER3DB-TP) maintain closer electrical specifications to the original. STMicroelectronics parts (STTH series) offer higher inventory levels and extended temperature ranges. Selection depends on circuit requirements, thermal design, and supplier availability.

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