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SA6.0ARLG Equivalent & Substitute Parts
Part Overview
The SA6.0ARLG is a 6V transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in through-hole applications. This component features a 10.3V maximum clamping voltage, 48.5A peak pulse current capability, and 500W peak pulse power rating in a DO-204AC (DO-15) axial package.
The SA6.0ARLG is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 6V |
| Voltage - Breakdown (Min) | 6.67V |
| Voltage - Clamping (Max) @ Ipp | 10.3V |
| Current - Peak Pulse (10/1000µs) | 48.5A |
| Power - Peak Pulse | 500W |
| Type | Zener |
| Unidirectional Channels | 1 |
| Mounting Type | Through Hole |
| Package / Case | DO-204AC, DO-15, Axial |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the SA6.0ARLG is determined by the following critical parameters:
- Voltage - Reverse Standoff: 6V (exact match required)
- Voltage - Clamping (Max) @ Ipp: 10.3V (exact match required)
- Current - Peak Pulse (10/1000µs): 48.5A minimum
- Power - Peak Pulse: 500W (exact match required)
- Type: Zener, Unidirectional
- Mounting Type: Through Hole
- Package / Case: DO-204AC or DO-15 Axial
Substitute parts are grouped into two categories:
Category A - Direct Electrical Equivalents (10.3V Clamping): Parts with identical clamping voltage (10.3V) and peak pulse current ratings of 48.5A or higher. These provide direct functional replacement with no circuit redesign required.
Category B - Functional Alternatives (11.2V Clamping): Parts with slightly elevated clamping voltage (11.2V) and reduced peak pulse current (41A). These operate within the same voltage class but with different transient response characteristics and require engineering evaluation for specific applications.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Voltage - Reverse Standoff | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Operating Temperature | Package | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| SA6.0ARLG | Littelfuse Inc. | Obsolete | 6V | 10.3V | 48.5A | 500W | -55°C ~ 150°C | DO-204AC (DO-15) | ROHS3 Compliant |
| SA6.0A | Taiwan Semiconductor Corporation | Active | 6V | 10.3V | 50A | 500W | -55°C ~ 175°C | DO-204AC (DO-15) | ROHS3 Compliant |
| SA6.0A-B | Littelfuse Inc. | Active | 6V | 10.3V | 49.5A | 500W | -55°C ~ 175°C | DO-204AC (DO-15) | ROHS3 Compliant |
| P5KE6.0A-AP | Micro Commercial Co | Active | 6V | 10.3V | 48.5A | 500W | -65°C ~ 175°C | DO-15 | Not specified |
| P5KE6.0A-BP | Micro Commercial Co | Active | 6V | 10.3V | 48.5A | 500W | -65°C ~ 175°C | DO-15 | Not specified |
| P5KE6.0A-TP | Micro Commercial Co | Active | 6V | 10.3V | 48.5A | 500W | -65°C ~ 175°C | DO-15 | Not specified |
| SA6.0A-TP | Micro Commercial Co | Active | 6V | 10.3V | 49.5A | 500W | -55°C ~ 175°C | DO-15 | ROHS3 Compliant |
| SAC6.0-E3/54 | Vishay General Semiconductor - Diodes Division | Active | 6V | 11.2V | 41A | 500W | -55°C ~ 175°C | DO-204AC (DO-15) | ROHS3 Compliant |
| SAC6.0-E3/73 | Vishay General Semiconductor - Diodes Division | Active | 6V | 11.2V | 41A | 500W | -55°C ~ 175°C | DO-204AC (DO-15) | ROHS3 Compliant |
| SAC6.0-TP | Micro Commercial Co | Active | 6V | 11.2V | 41A | 500W | -55°C ~ 175°C | DO-15 | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes (Category A - Direct Equivalents):
SA6.0A, SA6.0A-B, P5KE6.0A-AP, P5KE6.0A-BP, P5KE6.0A-TP, and SA6.0A-TP are direct electrical equivalents with 10.3V clamping voltage and peak pulse current ratings of 48.5A or higher. All are active products with ROHS3 compliance or equivalent regulatory status. These parts provide identical circuit performance to the SA6.0ARLG without modification.
SA6.0A (Taiwan Semiconductor Corporation) and SA6.0A-B (Littelfuse Inc.) offer extended operating temperature ranges (-55°C ~ 175°C) compared to the original part (-55°C ~ 150°C), providing improved thermal margin in high-temperature environments.
Secondary Substitutes (Category B - Functional Alternatives):
SAC6.0-E3/54, SAC6.0-E3/73, and SAC6.0-TP feature 11.2V clamping voltage with 41A peak pulse current. These parts maintain the 6V reverse standoff voltage and 500W power rating but exhibit different transient suppression characteristics. Selection requires verification that the elevated clamping voltage is acceptable for the protected circuit.
All substitute parts are active products with current manufacturing support and ROHS3 compliance status, ensuring long-term availability and regulatory compliance.
Frequently Asked Questions (FAQ)
Q: Can SA6.0A be used as a direct replacement for SA6.0ARLG?
A: Yes. SA6.0A matches all critical electrical parameters: 6V reverse standoff, 10.3V clamping voltage, and 48.5A minimum peak pulse current. It is an active product with extended temperature range and ROHS3 compliance.
Q: What is the difference between Category A and Category B substitutes?
A: Category A substitutes (SA6.0A, SA6.0A-B, P5KE6.0A series, SA6.0A-TP) maintain the 10.3V clamping voltage of the original part. Category B substitutes (SAC6.0 series) have 11.2V clamping voltage and lower peak pulse current (41A vs. 48.5A). Category A provides direct replacement; Category B requires application verification.
Q: Are the P5KE6.0A variants (AP, BP, TP) interchangeable?
A: Yes, within the P5KE6.0A series. All three variants (AP, BP, TP) share identical electrical specifications: 6V reverse standoff, 10.3V clamping voltage, and 48.5A peak pulse current. Differences are in packaging designation only.
Q: Does operating temperature range affect substitution eligibility?
A: Operating temperature range does not disqualify a substitute if the original application operates within the substitute's specified range. Extended temperature ranges (such as -55°C ~ 175°C in SA6.0A vs. -55°C ~ 150°C in SA6.0ARLG) provide additional design margin and are acceptable for direct replacement.
Q: Can SAC6.0-TP replace SA6.0ARLG in all applications?
A: SAC6.0-TP is a functional alternative, not a direct equivalent. The 11.2V clamping voltage is 0.9V higher than the original 10.3V specification. Applications requiring precise clamping voltage control must be evaluated to confirm the elevated voltage is acceptable for the protected circuit.
Q: What is the significance of packaging designations (TP, BP, AP)?
A: Packaging designations indicate tape and reel (TP), bulk (BP), or alternative packaging (AP) formats. These affect component handling and assembly processes but do not alter electrical performance. Selection depends on manufacturing requirements and inventory management practices.
Q: Are all substitute parts ROHS3 compliant?
A: SA6.0A, SA6.0A-B, SA6.0A-TP, SAC6.0-E3/54, SAC6.0-E3/73, and SAC6.0-TP are confirmed ROHS3 compliant. P5KE6.0A variants (AP, BP, TP) do not specify RoHS status in available documentation; verify compliance with the manufacturer if regulatory certification is required.
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