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P6SMB36A-E3/5B Equivalent & Substitute Parts
Part Overview
The P6SMB36A-E3/5B is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 30.8V reverse standoff voltage range with a 49.9V maximum clamping voltage and 12A peak pulse current rating. The device is designed for general purpose transient protection applications and is currently in active production status with RoHS3 compliance. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | P6SMB36A-E3/5B |
| Manufacturer | Vishay General Semiconductor - Diodes Division |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener, Unidirectional |
| Voltage - Reverse Standoff (Typ) | 30.8V |
| Voltage - Breakdown (Min) | 34.2V |
| Voltage - Clamping (Max) @ Ipp | 49.9V |
| Current - Peak Pulse (10/1000µs) | 12A |
| Power - Peak Pulse | 600W |
| Package / Case | DO-214AA, SMB |
| Mounting Type | Surface Mount |
| Operating Temperature | -65°C ~ 150°C (TJ) |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the P6SMB36A-E3/5B are qualified based on the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Voltage - Reverse Standoff (Typ): 30.8V
- Voltage - Breakdown (Min): 34.2V
- Voltage - Clamping (Max) @ Ipp: 49.9V
- Package / Case: DO-214AA, SMB
- Mounting Type: Surface Mount
- Unidirectional Channels: 1
Secondary Compatibility Parameters:
- Current - Peak Pulse (10/1000µs): 12A minimum
- Power - Peak Pulse: 600W minimum
- Operating Temperature Range: -55°C to 150°C minimum
- RoHS Compliance: ROHS3 preferred
Parts meeting all primary criteria are direct electrical and mechanical equivalents. Variations in peak pulse current, power dissipation, and temperature range represent enhanced or alternative performance characteristics within the same functional class.
Parameter Comparison
| Part Number | Manufacturer | Voltage - Reverse Standoff (Typ) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Package / Case | Operating Temperature | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| P6SMB36A-E3/5B | Vishay General Semiconductor | 30.8V | 49.9V | 12A | 600W | DO-214AA, SMB | -65°C ~ 150°C | ROHS3 Compliant |
| 1KSMB36A | Taiwan Semiconductor Corporation | 30.8V | 49.9V | 20A | 1000W | DO-214AA, SMB | -55°C ~ 175°C | ROHS3 Compliant |
| P6SMB36A | Eaton - Electronics Division | 30.8V | 49.9V | 12.2A | 600W | DO-214AA, SMB | -55°C ~ 150°C | RoHS Compliant |
| SM6T36AY | STMicroelectronics | 30.8V | 64.3V | 62A (8/20µs) | 600W | DO-214AA, SMB | -55°C ~ 150°C | ROHS3 Compliant |
| SMBJP6KE36A-TP | Micro Commercial Co | 30.8V | 49.9V | 12.2A | 600W | DO-214AA, SMB | -55°C ~ 175°C | ROHS3 Compliant |
| SZP6SMB36AT3G | Littelfuse Inc. | 30.8V | 49.9V | 12A | 600W | DO-214AA, SMB | -65°C ~ 150°C | ROHS3 Compliant |
| TPSMB36A | Littelfuse | 30.8V | 49.9V | 12.2A | 600W | DO-214AA, SMB | -65°C ~ 175°C | ROHS3 Compliant |
| SM6T36A | STMicroelectronics | 30.8V | 64.3V | 62A (8/20µs) | 600W | DO-214AA, SMB | -55°C ~ 150°C | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Equivalents (Identical Electrical and Mechanical Specifications):
SZP6SMB36AT3G (Littelfuse Inc.) provides the closest functional match to the P6SMB36A-E3/5B with identical voltage ratings, current specifications, and power dissipation. Both devices maintain the same operating temperature range (-65°C ~ 150°C) and achieve ROHS3 compliance. This part is suitable for direct substitution in existing designs.
Compatible Alternatives with Enhanced Performance:
1KSMB36A (Taiwan Semiconductor Corporation) maintains identical voltage and clamping specifications but offers increased peak pulse current (20A vs. 12A) and power dissipation (1000W vs. 600W). The extended upper operating temperature limit (-55°C ~ 175°C) provides additional thermal margin. This part is suitable for applications requiring higher transient energy absorption.
TPSMB36A (Littelfuse) matches the primary voltage and clamping parameters with marginally higher peak pulse current (12.2A) and extended temperature range (-65°C ~ 175°C). AEC-Q101 automotive qualification is available for this part.
Compatible Alternatives with Modified Clamping Characteristics:
SM6T36AY and SM6T36A (STMicroelectronics) maintain the 30.8V reverse standoff voltage but feature elevated clamping voltage (64.3V) and significantly higher peak pulse current (62A at 8/20µs pulse width). These parts are suitable for applications where higher transient current handling and modified clamping voltage are acceptable.
Compliance and Availability Considerations:
All listed substitute parts maintain ROHS3 compliance and active production status. Inventory availability ranges from 1,638 to 93,300 units across suppliers. Selection should account for supply chain requirements, lead time, and application-specific thermal and transient energy demands.
Frequently Asked Questions (FAQ)
Q: Can SM6T36AY or SM6T36A be used as direct replacements for P6SMB36A-E3/5B?
A: These parts share the same reverse standoff voltage (30.8V) and package (DO-214AA, SMB) but feature different clamping voltage (64.3V vs. 49.9V) and significantly higher peak pulse current (62A vs. 12A). They are electrically compatible for general transient protection but will exhibit different clamping behavior. Circuit validation is required if clamping voltage modification is acceptable.
Q: What is the difference between 1KSMB36A and P6SMB36A-E3/5B?
A: Both parts maintain identical voltage ratings (30.8V standoff, 49.9V clamping) and package specifications. The 1KSMB36A provides enhanced peak pulse current (20A vs. 12A) and power dissipation (1000W vs. 600W), with extended upper operating temperature (-175°C vs. 150°C). The 1KSMB36A is suitable for applications requiring higher transient energy absorption.
Q: Are all substitute parts available in the same packaging?
A: All listed substitute parts use DO-214AA (SMB) surface mount packaging. Supplier device package designations may vary (SMB, SMBJ, DO-214AA) but represent the same physical form factor and land pattern compatibility.
Q: Which substitute part has the widest operating temperature range?
A: TPSMB36A and 1KSMB36A both offer -55°C to 175°C operating range, providing the widest temperature margin. P6SMB36A-E3/5B and SZP6SMB36AT3G extend to -65°C on the lower end but are limited to 150°C maximum.
Q: Do all substitute parts meet RoHS3 compliance?
A: All listed substitute parts are ROHS3 compliant except P6SMB350CA, which is RoHS non-compliant and operates at significantly different voltage levels (300V standoff, 482V clamping). P6SMB350CA is not suitable for 30.8V applications.
Q: What is the significance of AEC-Q101 qualification on SM6T36AY and TPSMB36A?
A: AEC-Q101 qualification indicates automotive-grade reliability testing and is relevant only for automotive applications. For general purpose applications, this qualification provides no functional advantage but may be required by design specifications in automotive contexts.
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