Equivalent & Substitute Parts for US1D-13

Part Overview

The US1D-13 is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 200 V DC reverse voltage and 1 A average rectified current in a surface mount SMA package (DO-214AC). This part is classified as discontinued at DiGi Electronics, creating a requirement to identify functionally equivalent alternatives for ongoing production and repair applications.

The US1D-13 operates across a junction temperature range of -65°C to 150°C and features fast recovery characteristics with a reverse recovery time of 50 nanoseconds. Equivalent and substitute parts must maintain electrical performance within the specified voltage, current, and thermal parameters while accommodating available packaging and compliance requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-65 to 150	°C

Substitute Part Grouping Explanation

Substitution of the US1D-13 is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V
Current - Average Rectified (Io): 1 A
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 5 µA @ 200 V
Mounting Type: Surface Mount
Package / Case: DO-214AC (SMA) or DO-214BA (GF1)

Secondary Compatibility Factors:

Reverse Recovery Time (trr): 50 ns or faster
Voltage - Forward (Vf) (Max) @ If: 1 V @ 1 A or lower
Operating Temperature - Junction: -55°C to 175°C (encompasses or exceeds -65°C to 150°C range)
RoHS3 Compliance: Required for active production alternatives
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories based on package compatibility: SMA package (DO-214AC) equivalents and DO-214BA (GF1) package alternatives. Both package types are mechanically and electrically compatible for the specified application parameters.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V @ A]	trr [ns]	Ir @ Vr [µA @ V]	Package	Tj Range [°C]	Product Status	RoHS Status
US1D-13	Diodes Incorporated	200	1	1 @ 1	50	5 @ 200	DO-214AC (SMA)	-65 to 150	Discontinued	RoHS Non-Compliant
US1D-13-F	Diodes Incorporated	200	1	1 @ 1	50	5 @ 200	DO-214AC (SMA)	-65 to 150	Active	RoHS3 Compliant
EGF1D-E3/5CA	Vishay General Semiconductor - Diodes Division	200	1	1 @ 1	50	5 @ 200	DO-214BA (GF1)	-65 to 175	Active	RoHS3 Compliant
EGF1D-E3/67A	Vishay General Semiconductor - Diodes Division	200	1	1 @ 1	50	5 @ 200	DO-214BA (GF1)	-65 to 175	Active	RoHS3 Compliant
CSFA103-G	Comchip Technology	200	1	0.95 @ 1	35	5 @ 200	DO-214AC (SMA)	-55 to 150	Active	RoHS3 Compliant
CURA103-G	Comchip Technology	200	1	1 @ 1	50	5 @ 200	DO-214AC (SMA)	-65 to 150	Active	RoHS3 Compliant
ES1D	EVVO Semi	200	1	1 @ 1	35	5 @ 200	DO-214AC (SMA)	-55 to 150	Active	RoHS3 Compliant
ES1D-E3/5AT	Vishay General Semiconductor - Diodes Division	200	1	0.92 @ 1	25	5 @ 200	DO-214AC (SMA)	-55 to 150	Active	RoHS3 Compliant
ES1D-E3/61T	Vishay General Semiconductor - Diodes Division	200	1	0.92 @ 1	25	5 @ 200	DO-214AC (SMA)	-55 to 150	Active	RoHS3 Compliant
ES1D-LTP	Micro Commercial Co	200	1	0.95 @ 1	35	5 @ 200	DO-214AC (SMA)	-65 to 175	Active	RoHS3 Compliant
ES1D-M3/61T	Vishay General Semiconductor - Diodes Division	200	1	0.92 @ 1	25	5 @ 200	DO-214AC (SMA)	-55 to 150	Active	RoHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: US1D-13-F

The US1D-13-F from Diodes Incorporated is the direct parametric equivalent to the discontinued US1D-13. This part maintains identical electrical specifications across all critical parameters: 200 V reverse voltage, 1 A average rectified current, 1 V forward voltage at 1 A, and 50 ns reverse recovery time. The US1D-13-F is currently in active production status with RoHS3 compliance, making it the preferred choice for new designs and production continuity. Packaging is identical (DO-214AC, SMA), and the part is available in high volume (155,200 pieces in stock).

Secondary Recommendations by Application Requirements:

For Extended Temperature Range Applications (-65°C to 175°C):

ES1D-LTP (Micro Commercial Co): Maintains 200 V / 1 A specifications with extended upper temperature limit to 175°C. Forward voltage is 0.95 V @ 1 A and reverse recovery time is 35 ns. Available in high volume (335,300 pieces).
EGF1D-E3/5CA or EGF1D-E3/67A (Vishay General Semiconductor - Diodes Division): Both offer extended temperature range to 175°C with identical electrical specifications. These parts use DO-214BA (GF1) package instead of SMA, requiring PCB layout verification for mechanical compatibility.

For Improved Reverse Recovery Performance (trr < 50 ns):

ES1D-E3/5AT or ES1D-E3/61T (Vishay General Semiconductor - Diodes Division): Both feature 25 ns reverse recovery time with forward voltage of 0.92 V @ 1 A. ES1D-E3/61T has significantly higher inventory (2,328,659 pieces).
ES1D (EVVO Semi): Offers 35 ns reverse recovery time with 1 V forward voltage @ 1 A. Highest inventory availability among EVVO products (140,400 pieces).
CSFA103-G (Comchip Technology): Provides 35 ns reverse recovery time with 0.95 V forward voltage @ 1 A.

For Identical Package and Temperature Range:

CURA103-G (Comchip Technology): Matches the original US1D-13 specifications exactly with 200 V, 1 A, 1 V forward voltage, and 50 ns reverse recovery time. Operating temperature range is -65°C to 150°C. Available in active production (28,880 pieces).

All recommended substitutes are RoHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and maintain the required 5 µA reverse leakage current at 200 V. Selection should be based on specific application requirements for temperature range, reverse recovery performance, and package compatibility.

Frequently Asked Questions (FAQ)

Q: Can the US1D-13-F be used as a direct replacement for the discontinued US1D-13?

A: Yes. The US1D-13-F is electrically and mechanically identical to the US1D-13 across all specified parameters. Both parts feature 200 V reverse voltage, 1 A average rectified current, 1 V forward voltage at 1 A, 50 ns reverse recovery time, and identical DO-214AC (SMA) packaging. The primary difference is product status (active versus discontinued) and RoHS3 compliance. No circuit modifications or PCB layout changes are required.

Q: What is the difference between DO-214AC (SMA) and DO-214BA (GF1) packages?

A: Both are surface mount packages for rectifier diodes with identical electrical performance in this application. The physical dimensions and land patterns differ between the two package types. DO-214AC (SMA) is the original package for the US1D-13. DO-214BA (GF1) is used by Vishay alternatives (EGF1D series). PCB layout and footprint compatibility must be verified before substituting between these package types. Consult component datasheets for precise dimensional specifications.

Q: Why do some substitute parts have lower forward voltage (0.92 V or 0.95 V) compared to the original 1 V specification?

A: Lower forward voltage indicates improved efficiency and reduced power dissipation during forward conduction. Parts such as ES1D-E3/5AT, ES1D-E3/61T, ES1D-M3/61T, CSFA103-G, and ES1D-LTP all meet the maximum forward voltage specification of 1 V @ 1 A while operating at lower typical values. This represents an enhancement over the original part and is fully compatible with circuit designs rated for the 1 V maximum specification.

Q: Which substitute part offers the fastest reverse recovery time?

A: ES1D-E3/5AT and ES1D-E3/61T both feature 25 ns reverse recovery time, compared to the original 50 ns specification. This represents a 50% improvement in switching speed. ES1D-E3/61T is recommended due to significantly higher inventory availability (2,328,659 pieces). Faster reverse recovery reduces switching losses and improves efficiency in high-frequency applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All active substitute parts listed are RoHS3 compliant. The original US1D-13 is RoHS non-compliant. If RoHS3 compliance is required for your application, any of the listed active substitutes are acceptable. The US1D-13-F is the direct equivalent with RoHS3 compliance.

Q: What is the significance of the operating temperature range difference between -55°C and -65°C minimum?

A: The original US1D-13 operates from -65°C to 150°C. Some substitutes (ES1D-E3/5AT, ES1D-E3/61T, ES1D-M3/61T, ES1D, CSFA103-G) have a minimum operating temperature of -55°C. This represents a 10°C reduction in cold-temperature capability. If your application requires operation below -55°C, select substitutes with -65°C minimum rating: US1D-13-F, EGF1D-E3/5CA, EGF1D-E3/67A, CURA103-G, or ES1D-LTP.

Q: Can I use a substitute part with a higher maximum temperature rating (175°C) in place of the original (150°C)?

A: Yes. A higher maximum temperature rating provides additional thermal margin and is fully compatible with applications designed for the original 150°C maximum. Parts with 175°C maximum ratings (EGF1D-E3/5CA, EGF1D-E3/67A, ES1D-LTP) offer enhanced reliability in high-temperature environments without requiring circuit modifications.

Q: What packaging options are available for the substitute parts?

A: Substitute parts are available in two packaging formats: Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR). The original US1D-13 packaging format is not specified in the provided data. For high-volume production, Tape & Reel (TR) packaging is standard. For lower-volume or repair applications, Cut Tape (CT) & Digi-Reel® packaging is available. Verify packaging requirements with your procurement process before ordering.

Q: Which substitute part has the highest inventory availability?

A: ES1D-E3/61T (Vishay General Semiconductor - Diodes Division) has the highest inventory with 2,328,659 pieces in stock. This part features 25 ns reverse recovery time, 0.92 V forward voltage @ 1 A, and is available in Cut Tape (CT) & Digi-Reel® packaging. For immediate availability in high quantities, this part is recommended.

Q: Are there any compliance or certification differences between substitute parts?

A: All substitute parts carry identical compliance ratings: RoHS3 compliant, REACH Unaffected, MSL 1 (Unlimited), ECCN EAR99, and HTSUS 8541.10.0080. No compliance or certification differences exist between the listed substitutes. Selection should be based on electrical performance, package type, temperature range, and inventory availability.

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