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ESD6116 Equivalent & Substitute Parts
Part Overview
The ESD6116 is a transient voltage suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection in surface-mount applications. This unidirectional Zener-type TVS diode features a 20V clamping voltage with 1A peak pulse current capability in a compact 4-WLCSP package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | ESD6116 |
| Manufacturer | onsemi |
| Category | Transient Voltage Suppressors (TVS) |
| Product Status | Obsolete |
| Type | Zener |
| Unidirectional Channels | 1 |
| Voltage - Breakdown (Min) | 16V |
| Voltage - Clamping (Max) @ Ipp | 20V |
| Current - Peak Pulse (10/1000µs) | 1A (8/20µs) |
| Operating Temperature | -30°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 4-WLCSP (0.8x0.8) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the ESD6116 is constrained by the following critical parameters:
Primary Substitution Criteria:
- Voltage - Clamping (Max) @ Ipp: 20V nominal
- Current - Peak Pulse: 1A minimum
- Unidirectional protection topology
- Surface-mount packaging capability
- Operating temperature range compatibility
Substitution Logic:
The provided substitute parts list contains Zener diodes with voltage ratings ranging from 5.1V to 20V and through-hole packaging (DO-204AL/DO-41). These parts do not meet the primary substitution criteria for the ESD6116 due to:
- Package Incompatibility: All listed substitute parts use through-hole DO-204AL (DO-41) axial packages, while the ESD6116 requires surface-mount 4-WLCSP packaging.
- Voltage Rating Mismatch: The substitute parts have nominal Zener voltages (5.1V to 20V) that do not align with the ESD6116's 20V clamping specification and 16V minimum breakdown voltage.
- Application Category Difference: The substitute parts are general-purpose Zener diodes, not TVS diodes optimized for transient suppression with specified peak pulse current ratings.
Conclusion: No direct substitutes from the provided list meet the electrical and mechanical requirements for the ESD6116. Alternative sourcing strategies should include:
- Contacting onsemi for direct ESD6116 availability or recommended TVS replacements
- Consulting the ESD6116 datasheet for pin-compatible TVS alternatives in 4-WLCSP packaging
- Evaluating redesign options to accommodate alternative package types if surface-mount constraints can be relaxed
Parameter Comparison
| Parameter | ESD6116 | 1N4733AE3/TR13 | 1N4735 G | 1N4737 G | 1N4741AE3/TR13 | 1N4742 G | 1N4747AE3/TR13 | SMAJ4729AE3/TR13 |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | onsemi | Microchip Technology | Microsemi Corporation | Microsemi Corporation | Microchip Technology | Microsemi Corporation | Microchip Technology | Microchip Technology |
| Category | Transient Voltage Suppressors (TVS) | Diodes, Zener | Diodes, Zener | Diodes, Zener | Diodes, Zener | Diodes, Zener | Diodes, Zener | Diodes, Zener |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active |
| Mounting Type | Surface Mount | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Surface Mount |
| Package / Case | 4-WLCSP (0.8x0.8) | DO-204AL (DO-41) | DO-204AL (DO-41) | DO-204AL (DO-41) | DO-204AL (DO-41) | DO-204AL (DO-41) | DO-204AL (DO-41) | DO-214AC (SMA) |
| Operating Temperature | -30°C ~ 85°C | -65°C ~ 150°C | -65°C ~ 175°C | -65°C ~ 175°C | -65°C ~ 150°C | -65°C ~ 175°C | -65°C ~ 150°C | -55°C ~ 150°C |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Product Status Considerations:
The ESD6116 is obsolete, while all substitute parts listed are active products with ongoing manufacturer support. However, direct substitution is not feasible based on the provided component specifications.
Compliance and Certifications:
- ESD6116: REACH Unaffected, ECCN EAR99
- Active substitutes: All REACH Unaffected, ECCN EAR99
- RoHS Status: 1N4733AE3/TR13, 1N4741AE3/TR13, and SMAJ4729AE3/TR13 are ROHS3 Compliant; 1N4735 G, 1N4737 G, 1N4742 G are RoHS non-compliant
Selection Path:
For applications requiring surface-mount TVS protection with 20V clamping characteristics, direct component replacement from the provided list is not supported. The SMAJ4729AE3/TR13 is the only surface-mount option available, but its 3.6V Zener voltage and 2W power rating do not align with the ESD6116's 20V clamping and 1A peak pulse specifications. Procurement should focus on sourcing the original ESD6116 or consulting onsemi's current TVS diode portfolio for pin-compatible alternatives in 4-WLCSP packaging.
Frequently Asked Questions (FAQ)
Q: Can the 1N4747AE3/TR13 replace the ESD6116?
A: No. While the 1N4747AE3/TR13 has a 20V Zener voltage rating, it is a through-hole Zener diode in DO-204AL package, not a surface-mount TVS diode. The ESD6116 requires 4-WLCSP surface-mount packaging. Additionally, the 1N4747AE3/TR13 is rated for 1W continuous power dissipation, not the 1A peak pulse current specification of the ESD6116.
Q: Why is the SMAJ4729AE3/TR13 not suitable despite being surface-mount?
A: The SMAJ4729AE3/TR13 is a surface-mount Zener diode with a 3.6V nominal Zener voltage and 2W power rating. The ESD6116 requires 20V clamping voltage for transient suppression. The voltage rating mismatch makes this part unsuitable for the same application.
Q: What is the key difference between the ESD6116 and the listed Zener diodes?
A: The ESD6116 is a TVS diode optimized for transient voltage suppression with specified peak pulse current ratings (1A at 8/20µs). The listed substitute parts are general-purpose Zener diodes designed for voltage regulation and reference applications, not transient protection. TVS diodes have different electrical characteristics and response times optimized for ESD and surge suppression.
Q: Can I use a through-hole substitute if I modify the PCB layout?
A: PCB layout modification to accommodate through-hole components introduces design changes beyond component substitution. Such modifications require full circuit re-evaluation, including thermal management, signal integrity, and manufacturing process changes. This falls outside the scope of direct component equivalencing.
Q: Are there compliance concerns with the substitute parts?
A: All listed parts are REACH Unaffected and ECCN EAR99 compliant, matching the ESD6116's regulatory status. However, RoHS compliance varies: Microchip parts (1N4733AE3/TR13, 1N4741AE3/TR13, SMAJ4729AE3/TR13) are ROHS3 Compliant, while Microsemi parts are RoHS non-compliant. Verify compliance requirements for your specific application.
Q: What should I do if I cannot source the ESD6116?
A: Contact onsemi directly for obsolete part availability or recommended TVS replacements. Alternatively, evaluate TVS diodes from active manufacturers in 4-WLCSP packaging with 20V clamping specifications and 1A peak pulse current ratings. Consult the ESD6116 datasheet for pin-compatible alternatives.
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