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SMBJ36-E3/52 Equivalent & Substitute Parts
Part Overview
The SMBJ36-E3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for general-purpose transient voltage protection in surface-mount applications. This part operates with a 36V reverse standoff voltage and provides peak pulse power handling of 600W in a DO-214AA (SMB) package. The SMBJ36-E3/52 is currently listed 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 |
|---|---|
| Manufacturer Part Number | SMBJ36-E3/52 |
| Manufacturer | Vishay General Semiconductor - Diodes Division |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Unidirectional Channels | 1 |
| Voltage - Reverse Standoff (Typ) | 36V |
| Voltage - Breakdown (Min) | 40V |
| Voltage - Clamping (Max) @ Ipp | 64.3V |
| Current - Peak Pulse (10/1000µs) | 9.3A |
| Power - Peak Pulse | 600W |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | DO-214AA, SMB |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the SMBJ36-E3/52 is determined by the following critical parameters:
- Voltage - Reverse Standoff (Typ): 36V
- Voltage - Breakdown (Min): 40V
- Unidirectional Channels: 1
- Mounting Type: Surface Mount
- Package / Case: DO-214AA, SMB
- Power - Peak Pulse: 600W
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level (MSL): 1
Substitute parts must maintain the same reverse standoff voltage (36V), breakdown voltage minimum (40V), unidirectional topology, surface-mount configuration, and 600W peak pulse power rating. Variations in clamping voltage and peak pulse current are acceptable within the electrical design envelope, provided the part meets the core voltage and power specifications. All substitute parts listed are ROHS3 compliant with MSL-1 moisture sensitivity.
Parameter Comparison
| Parameter | SMBJ36-E3/52 (Main) | SMBJ36A-E3/52 | SMBJ36E3/TR13 | SM6T42AY | SMBJ36A (EVVO) | SMBJ36A-13-F | SMBJ36A-HRA | SMBJ36A-TP | SZ1SMB36AT3G |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Vishay | Vishay | Microchip | STMicroelectronics | EVVO Semi | Diodes Inc. | Littelfuse | Micro Commercial Co | Littelfuse |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active |
| Voltage - Reverse Standoff (Typ) | 36V | 36V | 36V | 36V | 36V | 36V | 36V | 36V | 36V |
| Voltage - Breakdown (Min) | 40V | 40V | 40V | 40V | 40V | 40V | 40V | 40V | 40V |
| Voltage - Clamping (Max) @ Ipp | 64.3V | 58.1V | 64.3V | 76V | 58.1V | 58.1V | 58.1V | 58.1V | 58.1V |
| Current - Peak Pulse (10/1000µs) | 9.3A | 10.3A | 9.3A | 52A (8/20µs) | 10.4A | 10.3A | 10.4A | 10.3A | 10.3A |
| Power - Peak Pulse | 600W | 600W | 600W | 600W | 600W | 600W | 600W | 600W | 600W |
| Operating Temperature Range | -55°C ~ 150°C | -55°C ~ 150°C | -65°C ~ 150°C | -55°C ~ 150°C | -65°C ~ 150°C | -55°C ~ 150°C | -65°C ~ 150°C | -55°C ~ 175°C | -65°C ~ 150°C |
| Package / Case | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB | DO-214AC, SMA | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Qualification | - | - | - | AEC-Q101 | - | - | - | - | AEC-Q101 |
Engineering Selection Recommendations
Primary Substitutes (Active Status, Identical Electrical Characteristics):
SMBJ36A-E3/52 (Vishay) and SMBJ36E3/TR13 (Microchip) are direct functional equivalents with active product status. Both maintain the 36V reverse standoff voltage, 40V minimum breakdown voltage, and 600W peak pulse power rating. SMBJ36A-E3/52 offers improved availability with 34,690 units in stock. SMBJ36E3/TR13 provides extended operating temperature range (-65°C to 150°C) compared to the original part.
Secondary Substitutes (Active Status, Lower Clamping Voltage):
SMBJ36A-13-F (Diodes Incorporated), SMBJ36A-HRA (Littelfuse), SMBJ36A-TP (Micro Commercial Co), and SZ1SMB36AT3G (Littelfuse) all feature 58.1V clamping voltage with 10.3A to 10.4A peak pulse current. These parts meet the core voltage specifications and are suitable for applications where lower clamping voltage provides improved transient suppression. SZ1SMB36AT3G and SM6T42AY carry AEC-Q101 automotive qualification.
Alternative Substitute (Higher Clamping Voltage, Automotive Grade):
SM6T42AY (STMicroelectronics) provides 76V clamping voltage with significantly higher peak pulse current (52A at 8/20µs) and carries AEC-Q101 automotive qualification. This part is suitable for applications requiring enhanced transient suppression capability and automotive-grade reliability.
Package Consideration:
SMBJ36A (EVVO Semi) uses DO-214AC (SMA) package instead of DO-214AA (SMB). This package variant requires PCB layout modification and is not recommended as a direct drop-in replacement without design review.
Frequently Asked Questions (FAQ)
Q: Can SMBJ36A-E3/52 directly replace SMBJ36-E3/52 without design changes?
A: Yes. SMBJ36A-E3/52 maintains identical reverse standoff voltage (36V), breakdown voltage (40V), and peak pulse power (600W). The lower clamping voltage (58.1V vs 64.3V) provides improved transient suppression performance. No design changes are required.
Q: What is the difference between SMBJ36A-TP and SMBJ36A-HRA?
A: Both parts share identical electrical specifications (36V standoff, 40V breakdown, 58.1V clamping, 10.3A-10.4A peak pulse current). SMBJ36A-TP extends the operating temperature range to -55°C to 175°C, while SMBJ36A-HRA operates from -65°C to 150°C. Selection depends on application temperature requirements.
Q: Why does SM6T42AY have higher peak pulse current (52A) than the original part (9.3A)?
A: SM6T42AY uses a different pulse waveform specification (8/20µs vs 10/1000µs). The higher current rating reflects the different test condition. Both parts maintain the same 600W peak pulse power and 36V reverse standoff voltage. SM6T42AY is suitable for applications requiring enhanced transient suppression with automotive qualification.
Q: Is SMBJ36A (EVVO Semi) compatible with the original DO-214AA (SMB) footprint?
A: No. EVVO Semi's SMBJ36A uses DO-214AC (SMA) package, which has different pin spacing and footprint. This part requires PCB layout modification and is not a direct drop-in replacement.
Q: Which substitute part offers the best availability?
A: SMBJ36A (EVVO Semi) provides the highest inventory with 122,200 units in stock. However, this part uses SMA package and requires design review. For DO-214AA (SMB) package compatibility, SMBJ36A-E3/52 (Vishay) offers 34,690 units in stock.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant with MSL-1 moisture sensitivity level, matching the original SMBJ36-E3/52 specifications.
Q: Which substitute parts carry automotive qualification?
A: SM6T42AY (STMicroelectronics) and SZ1SMB36AT3G (Littelfuse) both carry AEC-Q101 automotive qualification. These parts are suitable for automotive and industrial applications requiring automotive-grade reliability.
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