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SMBJ5947A/TR13 Equivalent & Substitute Parts Reference
Part Overview
The SMBJ5947A/TR13 from Microchip Technology is an 82 V, 2 W surface-mount Zener diode, supplied in the SMBJ (DO-214AA) package. It features a ±10% voltage tolerance, maximum impedance of 160 Ohms, and a maximum forward voltage of 1.2 V at 200 mA, with operation over -65°C to 150°C. The product is active, RoHS non-compliant, and offers a moisture sensitivity level (MSL) of 1 (unlimited). The need to identify substitute models often arises from environmental compliance requirements, supply constraints, or varying power ratings within the same package and electrical footprint.
Substiute Parts
Key Parameters
| Parameter | SMBJ5947A/TR13 |
|---|---|
| Voltage - Zener (Nom) (Vz) | 82 V |
| Tolerance | ±10% |
| Power - Max | 2 W |
| Impedance (Max) (Zzt) | 160 Ohms |
| Current - Reverse Leakage @ Vr | 1 µA @ 62.2 V |
| Voltage - Forward (Vf) (Max) @ If | 1.2 V @ 200 mA |
| Operating Temperature | -65°C ~ 150°C |
| Mounting Type | Surface Mount |
| Package / Case | DO-214AA, SMB |
| Supplier Device Package | SMBJ (DO-214AA) |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for SMBJ5947A/TR13 are identified based on exact or stricter matching of critical parameters: Zener voltage (82 V), device tolerance, maximum impedance, reverse leakage current, package (SMBJ/DO-214AA), mounting type, and operating temperature range. Substitutes must also meet or exceed the original maximum power rating and comply with the same or higher environmental and product status standards. The substitute models listed are confirmed within these parameter boundaries.
Parameter Comparison
| Parameter | SMBJ5947A/TR13 (Microchip Technology) |
1SMB5947BT3G (onsemi) |
SZ1SMB5947BT3G (onsemi) |
|---|---|---|---|
| Voltage - Zener (Nom) (Vz) | 82 V | 82 V | 82 V |
| Tolerance | ±10% | ±5% | ±5% |
| Power - Max | 2 W | 3 W | 3 W |
| Impedance (Max) (Zzt) | 160 Ohms | 160 Ohms | 160 Ohms |
| Current - Reverse Leakage @ Vr | 1 µA @ 62.2 V | 1 µA @ 62.2 V | 1 µA @ 62.2 V |
| Voltage - Forward (Vf) (Max) @ If | 1.2 V @ 200 mA | 1.5 V @ 200 mA | 1.5 V @ 200 mA |
| Operating Temperature | -65°C ~ 150°C | -65°C ~ 150°C | -65°C ~ 150°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB |
| Supplier Device Package | SMBJ (DO-214AA) | SMB | SMB |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 | EAR99 |
| Product Status | Active | Active | Active |
Engineering Selection Recommendations
The main part, SMBJ5947A/TR13, is RoHS non-compliant, while substitute models 1SMB5947BT3G and SZ1SMB5947BT3G are ROHS3 compliant and REACH unaffected. All options maintain an active product status and MSL 1 (unlimited). SZ1SMB5947BT3G additionally offers automotive qualification (AEC-Q101). All substitutes maintain matching or stricter parametric criteria and conform to the same package and mounting format.
Frequently Asked Questions (FAQ)
Q: Which parameters determine equivalence for Zener diode substitution?
A: Zener voltage, tolerance, power rating, maximum impedance, reverse leakage current, forward voltage, package, mounting type, and operating temperature.
Q: Are 1SMB5947BT3G and SZ1SMB5947BT3G compatible in footprint with SMBJ5947A/TR13?
A: All listed parts use the DO-214AA, SMB surface mount package and are footprint compatible.
Q: Is RoHS status a required consideration?
A: Yes. RoHS compliance is a critical selection criterion where required by regulations or end product requirements.
Q: Does an increased power rating in a substitute affect compatibility?
A: A higher power rating is within the substitution criteria as it meets or exceeds the original device's capability.
Q: What distinguishes SZ1SMB5947BT3G in this group?
A: SZ1SMB5947BT3G includes automotive qualification (AEC-Q101) as per the provided data.
Q: Will using a substitute with a tighter tolerance affect fitting?
A: Substitutes with a tighter tolerance (e.g., ±5% vs. ±10%) remain within compatible specifications and may offer stricter parameter control.
Q: Are there differences in moisture sensitivity among these models?
A: All parts have Moisture Sensitivity Level (MSL) 1 (unlimited), aligning storage and handling requirements.
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