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Equivalent & Substitute Parts for ES1D/1 General Purpose Rectifier Diode
Part Overview
The ES1D/1 is a general purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 200 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This part is classified as obsolete and is no longer in active production. Finding equivalent and substitute parts is necessary to support ongoing maintenance, repair, and new design requirements where this component is specified or functionally required.
The ES1D/1 operates across a junction temperature range of -55°C to 150°C and exhibits fast recovery characteristics with a reverse recovery time of 25 nanoseconds. The part is RoHS non-compliant and carries an MSL rating of 1 (Unlimited).
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - DC Reverse (Vr) (Max) | 200 | V |
| Current - Average Rectified (Io) | 1 | A |
| Voltage - Forward (Vf) (Max) @ If | 920 mV @ 1 A | mV |
| Reverse Recovery Time (trr) | 25 | ns |
| Current - Reverse Leakage @ Vr | 5 | µA @ 200 V |
| Capacitance @ Vr, F | 10 | pF @ 4V, 1MHz |
| Operating Temperature - Junction | -55 to 150 | °C |
| Package / Case | DO-214AC, SMA | — |
| Mounting Type | Surface Mount | — |
| Technology | Standard | — |
Substitute Part Grouping Explanation
Substitute parts for the ES1D/1 are qualified based on strict electrical and mechanical parameter equivalence. All substitute parts must meet or exceed the following critical parameters:
- Voltage Rating: 200 V DC reverse voltage (Vr)
- Current Rating: 1 A average rectified current (Io)
- Forward Voltage: 920 mV maximum at 1 A forward current
- Reverse Recovery Time: 25 nanoseconds (fast recovery characteristic)
- Reverse Leakage Current: 5 µA at 200 V
- Package: DO-214AC (SMA) surface mount
- Temperature Range: -55°C to 150°C junction temperature
Substitute parts are grouped into two categories:
Category 1: Standard Industrial Grade (RoHS3 Compliant) These parts maintain identical electrical specifications and are suitable for general industrial applications. All parts in this category are active products with RoHS3 compliance.
Category 2: Automotive Grade (AEC-Q101 Qualified) These parts include automotive-grade qualification (AEC-Q101) and are suitable for automotive and high-reliability applications. These parts carry the same electrical specifications as the main part.
Category 3: Alternative Base Product (U1D Series) The U1D series represents an alternative base product line with equivalent electrical performance. The reverse recovery time specification differs slightly (24 ns versus 25 ns), which remains within acceptable fast recovery parameters.
Parameter Comparison
| Part Number | Manufacturer | Vr (Max) [V] | Io [A] | Vf (Max) @ 1A [mV] | trr [ns] | Ir @ 200V [µA] | Package | Status | RoHS | Grade |
|---|---|---|---|---|---|---|---|---|---|---|
| ES1D/1 | Vishay | 200 | 1 | 920 | 25 | 5 | DO-214AC | Obsolete | Non-compliant | Standard |
| ES1D-E3/5AT | Vishay | 200 | 1 | 920 | 25 | 5 | DO-214AC | Active | ROHS3 | Standard |
| ES1D-E3/61T | Vishay | 200 | 1 | 920 | 25 | 5 | DO-214AC | Active | ROHS3 | Standard |
| ES1D-M3/5AT | Vishay | 200 | 1 | 920 | 25 | 5 | DO-214AC | Active | ROHS3 | Standard |
| ES1D-M3/61T | Vishay | 200 | 1 | 920 | 25 | 5 | DO-214AC | Active | ROHS3 | Standard |
| ES1DHE3_A/H | Vishay | 200 | 1 | 920 | 25 | 5 | DO-214AC | Active | ROHS3 | Automotive |
| ES1DHE3_A/I | Vishay | 200 | 1 | 920 | 25 | 5 | DO-214AC | Active | ROHS3 | Automotive |
| ES1DHM3_A/H | Vishay | 200 | 1 | 920 | 25 | 5 | DO-214AC | Active | ROHS3 | Automotive |
| ES1DHM3_A/I | Vishay | 200 | 1 | 920 | 25 | 5 | DO-214AC | Active | ROHS3 | Automotive |
| U1D-E3/5AT | Vishay | 200 | 1 | 920 | 24 | 5 | DO-214AC | Active | ROHS3 | Standard |
| U1D-E3/61T | Vishay | 200 | 1 | 920 | 24 | 5 | DO-214AC | Active | ROHS3 | Standard |
Engineering Selection Recommendations
For Standard Industrial Applications:
The ES1D-E3/61T and ES1D-M3/61T are recommended as primary substitutes for the obsolete ES1D/1. Both parts are active products with RoHS3 compliance and maintain identical electrical specifications. The ES1D-E3/61T offers the highest inventory availability (2,328,659 pieces), making it the preferred choice for volume applications. The ES1D-M3/61T provides an alternative with lower inventory levels (3,200 pieces) but equivalent performance.
The ES1D-E3/5AT and ES1D-M3/5AT are functionally equivalent alternatives with different packaging configurations (Cut Tape & Digi-Reel versus Tape & Reel).
For Automotive and High-Reliability Applications:
The ES1DHE3_A/H, ES1DHE3_A/I, ES1DHM3_A/H, and ES1DHM3_A/I are automotive-grade alternatives qualified to AEC-Q101 standard. These parts are suitable for applications requiring automotive qualification and maintain the same electrical performance as the standard industrial grade parts. All automotive-grade variants are RoHS3 compliant.
For Alternative Base Product Line:
The U1D-E3/5AT and U1D-E3/61T represent an alternative base product series with equivalent electrical specifications. The reverse recovery time is specified at 24 nanoseconds, which is within the fast recovery classification and functionally equivalent to the 25 nanosecond specification of the ES1D/1. These parts are active products with RoHS3 compliance and suitable for applications where the U1D base product is acceptable.
Compliance Considerations:
All recommended substitute parts are RoHS3 compliant, addressing regulatory requirements that the original ES1D/1 does not meet. The MSL rating of 1 (Unlimited) is maintained across all substitute parts, indicating no moisture sensitivity restrictions for storage and handling.
Frequently Asked Questions (FAQ)
Q: Can ES1D-E3/61T directly replace ES1D/1 in existing designs?
A: Yes. The ES1D-E3/61T is a parametric equivalent with identical electrical specifications (200 V, 1 A, 920 mV forward voltage, 25 ns recovery time) and the same DO-214AC package. The primary difference is product status (active versus obsolete) and RoHS3 compliance. No circuit modifications are required.
Q: What is the difference between ES1D-E3/5AT and ES1D-E3/61T?
A: Both parts are parametrically identical with the same electrical specifications and DO-214AC package. The difference is in packaging format: ES1D-E3/5AT is supplied in Cut Tape & Digi-Reel format, while ES1D-E3/61T is supplied in Tape & Reel format. Selection depends on assembly equipment compatibility and procurement requirements.
Q: Are automotive-grade parts (ES1DHE3_A/H, ES1DHM3_A/H) suitable for non-automotive applications?
A: Yes. Automotive-grade parts with AEC-Q101 qualification exceed the requirements of standard industrial applications. These parts can be used in any application where the ES1D/1 was specified, with the added benefit of automotive-level reliability and qualification.
Q: How does the U1D series differ from the ES1D series?
A: The U1D series represents an alternative base product line with equivalent electrical performance. The reverse recovery time is specified at 24 nanoseconds compared to 25 nanoseconds for the ES1D series. Both specifications fall within the fast recovery classification (≤500 ns for >200 mA). All other electrical parameters are identical. The U1D series is suitable where the alternative base product is acceptable.
Q: Is the reverse recovery time difference between ES1D (25 ns) and U1D (24 ns) significant?
A: No. Both specifications are within the fast recovery diode classification and represent equivalent performance for practical circuit applications. The 1 nanosecond difference is within normal manufacturing tolerance and does not affect functional compatibility.
Q: What inventory considerations should guide part selection?
A: ES1D-E3/61T offers the highest inventory availability (2,328,659 pieces), making it the optimal choice for volume production and long-term supply security. ES1D-E3/5AT (20,100 pieces) and U1D-E3/61T (34,400 pieces) provide alternative sources with substantial inventory. Automotive-grade variants and U1D-E3/5AT have lower inventory levels and should be selected based on specific application requirements rather than availability alone.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All recommended substitute parts carry RoHS3 compliance status. The original ES1D/1 is RoHS non-compliant. Substitution with any recommended part addresses RoHS compliance requirements for new designs and updated manufacturing processes.
Q: Can multiple substitute parts be used interchangeably within the same assembly?
A: Yes. All substitute parts listed maintain identical electrical specifications and the same DO-214AC package. They are mechanically and electrically interchangeable. However, packaging format differences (Cut Tape & Digi-Reel versus Tape & Reel) may affect assembly line compatibility and should be verified with manufacturing equipment specifications.
Q: What is the MSL rating and why is it relevant?
A: All parts, including the original ES1D/1 and all substitutes, carry an MSL rating of 1 (Unlimited). This indicates no moisture sensitivity restrictions. The components can be stored and handled without special moisture control measures, simplifying logistics and inventory management.
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