Request Quote
(Ships tomorrow)
P6SMB300C Equivalent & Substitute Parts
Part Overview
The P6SMB300C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component operates with a reverse standoff voltage of 256V and provides clamping at 434.7V with a peak pulse power rating of 600W. The part is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Reverse Standoff Voltage (Typ) | 256V |
| Voltage - Breakdown (Min) | 270V |
| Voltage - Clamping (Max) @ Ipp | 434.7V |
| Current - Peak Pulse (10/1000µs) | 1.5A |
| Power - Peak Pulse | 600W |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| Package / Case | DO-214AA, SMB |
| Mounting Type | Surface Mount |
| Type | Zener |
| Bidirectional Channels | 1 |
Substitute Part Grouping Explanation
Substitute parts for the P6SMB300C are qualified based on the following critical parameters that determine functional equivalence:
- Reverse standoff voltage of 256V (Typ)
- Peak pulse current rating of 1.5A or greater
- Peak pulse power rating of 600W
- Clamping voltage at or below 434.7V @ Ipp
- Surface-mount package in DO-214AA (SMB) form factor
- Operating temperature range of -55°C to 150°C (TJ)
- Bidirectional configuration with single channel
Both substitute parts meet these core electrical and mechanical requirements, enabling direct replacement in the P6SMB300C application circuit.
Parameter Comparison
| Parameter | P6SMB300C (Littelfuse) | P6SMB300CA (Eaton) | TVP06B301CA-G (Comchip) |
|---|---|---|---|
| Voltage - Reverse Standoff (Typ) | 256V | 256V | 256V |
| Voltage - Breakdown (Min) | 270V | 285V | 285V |
| Voltage - Clamping (Max) @ Ipp | 434.7V | 414V | 414V |
| Current - Peak Pulse (10/1000µs) | 1.5A | 1.5A | 1.45A |
| Power - Peak Pulse | 600W | 600W | 600W |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Package / Case | DO-214AA, SMB | DO-214AA, SMB | DO-214AA, SMB |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Type | Zener | Zener | Zener |
| Bidirectional Channels | 1 | 1 | 1 |
Engineering Selection Recommendations
P6SMB300CA (Eaton - Electronics Division): This substitute is classified as active product status, ensuring ongoing availability and manufacturing support. The part demonstrates improved clamping voltage performance at 414V compared to the original 434.7V specification, providing enhanced transient suppression. However, RoHS non-compliance status must be evaluated against project requirements. Inventory availability is substantial at 6155 pieces.
TVP06B301CA-G (Comchip Technology): This manufacturer-recommended substitute maintains active product status with ROHS3 compliance certification, aligning with modern environmental and regulatory standards. The clamping voltage of 414V and peak pulse current of 1.45A remain within acceptable operating parameters. This option is suitable for applications requiring RoHS compliance documentation. Current inventory is 797 pieces.
Frequently Asked Questions (FAQ)
Q: Can P6SMB300CA and TVP06B301CA-G be used interchangeably with P6SMB300C?
A: Both substitutes meet the core electrical specifications for reverse standoff voltage (256V), peak pulse power (600W), and operating temperature range (-55°C to 150°C). The clamping voltages of 414V are lower than the original 434.7V, providing improved transient suppression. Both are packaged in DO-214AA (SMB) surface-mount form factor and are pin-compatible.
Q: What is the difference between the two substitute options?
A: P6SMB300CA is manufactured by Eaton and offers higher inventory availability but is RoHS non-compliant. TVP06B301CA-G is manufactured by Comchip and carries ROHS3 compliance certification. Both deliver equivalent electrical performance with identical clamping voltage and power ratings.
Q: Does the lower clamping voltage in the substitutes affect circuit performance?
A: The substitute parts clamp at 414V versus the original 434.7V. This represents improved transient suppression performance, as lower clamping voltage provides faster voltage regulation during overvoltage events. This change is beneficial for circuit protection.
Q: Are there packaging differences between these parts?
A: All three parts use the DO-214AA (SMB) surface-mount package. P6SMB300CA is supplied in Tape & Reel packaging, while TVP06B301CA-G is also supplied in Tape & Reel format. Both are compatible with automated assembly processes.
Q: Which substitute should be selected for new designs?
A: Selection depends on compliance requirements. For RoHS-compliant applications, TVP06B301CA-G is the appropriate choice. For applications without RoHS constraints, either substitute is acceptable based on availability and procurement lead times.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts