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SA58A Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts
Part Overview
The SA58A is a unidirectional Zener-type transient voltage suppressor diode manufactured by onsemi, designed for general-purpose overvoltage protection applications. The device features a 58V reverse standoff voltage with a 93.6V maximum clamping voltage and 5.3A peak pulse current capability in a through-hole DO-15 package. The SA58A is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 58 | V |
| Voltage - Breakdown (Min) | 64.4 | V |
| Voltage - Clamping (Max) @ Ipp | 93.6 | V |
| Current - Peak Pulse (10/1000µs) | 5.3 | A |
| Power - Peak Pulse | 500 | W |
| Type | Zener | - |
| Unidirectional Channels | 1 | - |
| Mounting Type | Through Hole | - |
| Package / Case | DO-204AC, DO-15, Axial | - |
Substitute Part Grouping Explanation
Substitute parts for the SA58A are classified based on electrical parameter compatibility and packaging equivalence. The primary substitution criteria are:
- Voltage - Reverse Standoff: 58V (nominal)
- Voltage - Breakdown (Min): 64.4V
- Voltage - Clamping (Max) @ Ipp: 93.6V
- Current - Peak Pulse (10/1000µs): 5.3A minimum
- Power - Peak Pulse: 500W
- Package / Case: DO-204AC (DO-15) through-hole axial configuration
- Type: Zener unidirectional TVS diode
Parts are grouped into two categories:
Direct Manufacturer Equivalents: Parts with identical electrical specifications and active product status from established semiconductor manufacturers.
Similar Functional Equivalents: Parts meeting all electrical parameters with minor variations in peak pulse current (5.4A to 5.6A) or manufacturer packaging designations, maintaining full functional compatibility.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Vwm (V) | Vb Min (V) | Vc Max (V) | Ipp (A) | Pkg Type | Operating Temp (°C) | RoHS |
|---|---|---|---|---|---|---|---|---|---|
| SA58A | onsemi | Obsolete | 58 | 64.4 | 93.6 | 5.3 | DO-15 | - | - |
| SA58A-E3/54 | Vishay General Semiconductor | Active | 58 | 64.4 | 93.6 | 5.3 | DO-204AC | -55 to 175 | ROHS3 |
| SA58AHE3/54 | Vishay General Semiconductor | Active | 58 | 64.4 | 93.6 | 5.3 | DO-204AC | -55 to 175 | ROHS3 |
| P5KE58A-AP | Micro Commercial Co | Active | 58 | 64.4 | 93.6 | 5.3 | DO-15 | -65 to 175 | - |
| P5KE58A-BP | Micro Commercial Co | Active | 58 | 64.4 | 93.6 | 5.3 | DO-15 | -65 to 175 | - |
| P5KE58A-TP | Micro Commercial Co | Active | 58 | 64.4 | 93.6 | 5.3 | DO-15 | -65 to 175 | - |
| SA58A (Taiwan Semiconductor) | Taiwan Semiconductor Corporation | Active | 58 | 64.4 | 93.6 | 5.6 | DO-204AC | -55 to 175 | ROHS3 |
| SA58A-AP | Micro Commercial Co | Active | 58 | 64.4 | 93.6 | 5.4 | DO-15 | -55 to 175 | - |
| SA58A-BP | Micro Commercial Co | Active | 58 | 64.4 | 93.6 | 5.4 | DO-15 | -55 to 175 | - |
| SA58A-TP | Micro Commercial Co | Active | 58 | 64.4 | 93.6 | 5.4 | DO-15 | -55 to 175 | - |
Engineering Selection Recommendations
Primary Substitutes (Direct Equivalents):
SA58A-E3/54 and SA58AHE3/54 from Vishay General Semiconductor are direct functional equivalents with active product status. Both maintain identical electrical specifications (58V standoff, 93.6V clamping, 5.3A peak pulse) and are ROHS3 compliant. SA58AHE3/54 carries AEC-Q101 automotive qualification, suitable for automotive-grade applications requiring enhanced reliability standards.
Secondary Substitutes (Functional Equivalents):
P5KE58A series (P5KE58A-AP, P5KE58A-BP, P5KE58A-TP) from Micro Commercial Co and SA58A variants from Micro Commercial Co (SA58A-AP, SA58A-BP, SA58A-TP) meet all electrical parameters with peak pulse current ratings of 5.3A to 5.4A, within acceptable tolerance for general-purpose applications. These parts are active and available in bulk packaging configurations.
Taiwan Semiconductor Corporation's SA58A variant offers 5.6A peak pulse current with ROHS3 compliance and active product status, providing enhanced current handling capability.
Selection Criteria:
For applications requiring automotive qualification, select SA58AHE3/54. For standard industrial applications with active product support, select SA58A-E3/54 or Taiwan Semiconductor's SA58A. For cost-optimized procurement with extended temperature range (-65°C), select P5KE58A series variants.
Frequently Asked Questions (FAQ)
Q: Can SA58A-E3/54 directly replace the obsolete onsemi SA58A?
A: Yes. SA58A-E3/54 maintains identical electrical specifications: 58V reverse standoff, 64.4V minimum breakdown, 93.6V maximum clamping voltage, and 5.3A peak pulse current. Both use DO-204AC (DO-15) through-hole axial packaging. The primary difference is product status (active vs. obsolete) and compliance certification (ROHS3).
Q: What is the difference between SA58A-E3/54 and SA58AHE3/54?
A: Both parts are electrically identical with matching voltage and current ratings. SA58AHE3/54 includes AEC-Q101 automotive qualification and is designated for automotive-grade applications. Select SA58AHE3/54 for automotive designs; SA58A-E3/54 for general industrial applications.
Q: Are Micro Commercial Co P5KE58A series parts compatible with SA58A?
A: Yes. P5KE58A-AP, P5KE58A-BP, and P5KE58A-TP maintain the same voltage specifications (58V standoff, 93.6V clamping) and peak pulse current (5.3A). All use DO-15 through-hole packaging. Differences include extended operating temperature range (-65°C to 175°C vs. standard -55°C to 175°C) and bulk packaging configuration.
Q: What is the difference between SA58A-AP, SA58A-BP, and SA58A-TP from Micro Commercial Co?
A: These three part numbers are functionally identical with 5.4A peak pulse current and -55°C to 175°C operating temperature range. The suffix designations (AP, BP, TP) indicate different packaging or tape configurations. All are compatible substitutes for the original SA58A.
Q: Can I use Taiwan Semiconductor's SA58A (5.6A variant) instead of the onsemi SA58A (5.3A)?
A: Yes. The higher peak pulse current rating (5.6A vs. 5.3A) provides enhanced current handling capability while maintaining identical voltage specifications. This part is ROHS3 compliant and active, making it suitable for direct substitution with improved performance margin.
Q: What packaging considerations apply when substituting SA58A parts?
A: All substitute parts use DO-204AC or DO-15 through-hole axial packaging, which are mechanically and electrically equivalent designations. Verify PCB footprint compatibility with axial lead spacing before substitution. Tape & Reel (TR) and bulk packaging options are available; confirm procurement packaging matches assembly requirements.
Q: Are there temperature range differences between substitute parts?
A: Yes. Vishay parts (SA58A-E3/54, SA58AHE3/54) and Taiwan Semiconductor's SA58A operate from -55°C to 175°C. Micro Commercial Co's P5KE58A series extends to -65°C minimum, providing wider low-temperature operation. Select based on application temperature requirements.
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