LL4007G L0G Equivalent & Substitute Parts

Part Overview

The LL4007G L0G is a general-purpose rectifier diode rated for 1000 V DC reverse voltage and 1 A average rectified current, manufactured by Taiwan Semiconductor Corporation. This component is packaged in a DO-213AB MELF surface mount configuration and is classified as obsolete. Due to its obsolete product status, equivalent substitute parts with identical or superior electrical specifications are necessary to maintain design continuity and ensure component availability for new production and repair applications.

Substiute Parts

LL4007G L0G

Taiwan Semiconductor CorporationIn Stock: 688LL4007G L0G Datasheet

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S1M

EVVO SemiIn Stock: 5420S1M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LL4007G L0G are identified based on electrical parameter equivalence and compliance certification alignment. The primary substitution criteria are:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 1000 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
• Current - Reverse Leakage @ Vr: 5 µA @ 1000 V
• Speed: Standard Recovery >500ns, > 200mA (Io)
• Capacitance @ Vr, F: 15pF @ 4V, 1MHz

Compliance & Environmental Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Mounting Type: Surface Mount

Acceptable Variations:

• Operating Temperature - Junction: Substitute may have narrower range if minimum is ≥ -65°C and maximum is ≥ 150°C
• Package / Case: Different surface mount packages (DO-213AB MELF, DO-214AC SMA) are acceptable provided PCB layout accommodates the physical dimensions

The S1M manufactured by EVVO Semi meets all electrical parameter requirements and compliance certifications, with the primary distinction being package configuration (SMA versus MELF).

Parameter Comparison

Engineering Selection Recommendations

The S1M from EVVO Semi is a direct electrical equivalent to the LL4007G L0G with all critical electrical parameters matching specification. The substitute part carries Active product status, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity classification, confirming compatibility with standard surface mount assembly and storage protocols.

The primary design consideration is package configuration. The LL4007G L0G uses DO-213AB MELF packaging, while the S1M uses DO-214AC SMA packaging. These packages have different physical footprints and land patterns. PCB layout modification is required if substituting the S1M into existing designs originally specified for MELF packages. Conversely, if new designs are being developed, the SMA package of the S1M offers standard industry compatibility and broader supplier availability.

The operating temperature range of the S1M (-55°C ~ 150°C) is narrower at the minimum temperature compared to the LL4007G L0G (-65°C ~ 150°C). This difference is acceptable for applications with minimum operating temperatures at or above -55°C.

Frequently Asked Questions (FAQ)

Q: Can the S1M directly replace the LL4007G L0G without circuit modification?

A: The S1M is electrically equivalent and can replace the LL4007G L0G in circuit function. However, PCB layout modification is required due to different package types (SMA versus MELF). The land pattern, footprint dimensions, and lead spacing differ between these packages.

Q: What is the difference between MELF and SMA packages?

A: MELF (DO-213AB) and SMA (DO-214AC) are both surface mount diode packages but have different physical dimensions and land patterns. MELF packages are cylindrical with axial leads, while SMA packages are rectangular with gull-wing leads. Selection depends on available PCB space and design layout.

Q: Are there any temperature range limitations when using the S1M as a substitute?

A: The S1M has a minimum operating temperature of -55°C compared to the LL4007G L0G at -65°C. If your application requires operation below -55°C, the S1M is not suitable. For applications operating at -55°C or above, the S1M is fully compatible.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the LL4007G L0G and S1M are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity classification. They are equivalent in environmental and regulatory compliance.

Q: Why is the LL4007G L0G listed as obsolete?

A: The LL4007G L0G is classified as obsolete by the manufacturer, meaning it is no longer in active production. The S1M, with Active product status, is the recommended substitute for new designs and ongoing production requirements.

Q: What are the key electrical parameters that make the S1M equivalent to the LL4007G L0G?

A: The S1M matches all critical electrical specifications: 1000 V reverse voltage rating, 1 A average rectified current, 1.1 V forward voltage drop at 1 A, 5 µA reverse leakage current at 1000 V, standard recovery speed, and 15 pF capacitance. These parameters ensure functional equivalence in rectification applications.

Q: Is the S1M available in higher quantities than the LL4007G L0G?

A: Yes. The S1M has 5394 pieces in stock compared to 657 pieces for the LL4007G L0G, providing superior supply chain availability and shorter lead times.