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Vishay General Semiconductor - Diodes Division P6SMB51AHM3/I
- Part No.:
- P6SMB51AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB51AHM3/I.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,270
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Product details
Overview
P6SMB51AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 43.6 V stand-off voltage (VWM), 48.5–53.6 V breakdown voltage (VBR) at 1 mA test current, and clamps to ≤70.1 V at 8.6 A peak pulse current under 10/1000 µs waveform - delivering 600 W peak pulse power for robust ESD and surge protection in automotive and industrial control circuits.
For engineers reviewing the P6SMB51AHM3/I datasheet, P6SMB51AHM3/I pinout, P6SMB51AHM3/I application, or P6SMB51AHM3/I equivalent, this device is selected for high-reliability transient suppression where AEC-Q101 qualification, halogen-free RoHS compliance, and stable clamping performance across -65 °C to +150 °C junction temperature are required.
Technical Context
The P6SMB51AHM3/I operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient overvoltages and low incremental surge resistance for precise clamping. Its thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W support reliable operation on standard 0.2" × 0.2" copper pads without active cooling.
Designed for repetitive surge duty cycles up to 0.01 %, it sustains 100 A non-repetitive forward surge current (IFSM) and maintains <1 μA reverse leakage at VWM, ensuring minimal standby power loss in always-on protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 43.6 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 48.5–53.6 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | ≤70.1 V at 8.6 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC-level survivability. |
| PPPM | 600 W - Peak pulse power handling capability; supports IEC 61000-4-5 Level 4 surge immunity (4 kV/2 Ω). |
| IPPM | 8.6 A - Peak pulse current capacity at rated clamping voltage; determines minimum series impedance for system-level protection design. |
| TJ Range | -65 °C to +150 °C - Full automotive-grade junction temperature range; validated for under-hood and industrial ambient conditions. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line ground or low-side reference. | Defines polarity-sensitive placement - must be tied to lower potential side of protected node. |
| Cathode | Current exit terminal in forward bias; marked with band; connected to supply rail or signal source. | Ensures correct orientation for unidirectional clamping; reverse connection disables protection function. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables use in ADAS, body control, and infotainment modules without additional qualification. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations (IEC 61249-2-21); eliminates brominated flame retardants while maintaining UL 94 V-0 rating. |
| 600 W peak pulse power | Supports IEC 61000-4-5 surge testing at 4 kV open-circuit voltage with 2 Ω source impedance - sufficient for industrial port-level protection. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream components - critical for safeguarding 3.3 V/5 V logic and MOSFET gate drivers. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns - eliminates bake-out step in high-volume SMT production. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 43.6 V. Use Value: Limits peak voltage to ≤70.1 V during 8.6 A transients, preventing damage to MCU power supplies and CAN transceivers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt ESD and inductive switching noise from 24 V signal lines. Use Value: Sub-1 ns response and 43.6 V stand-off preserve signal integrity while blocking >8 kV HBM ESD events. |
| Telecom DC Power Input Protection | Consumer USB-C Port Surge Suppression |
Use Scenario: Securing 48 V PoE-powered equipment inputs against lightning-induced surges on outdoor Ethernet links. IC Role / Device Role / Timing Role: Primary clamping device on DC input rail upstream of DC/DC converter. Use Value: 600 W pulse rating handles multi-kV induced surges; AEC-Q101 reliability ensures long-term field deployment. |
Use Scenario: Adding secondary-level surge protection on VBUS line of USB-C receptacles in portable monitors and docking stations. IC Role / Device Role / Timing Role: Unidirectional suppressor between VBUS and ground, sized for 5–20 V operation. Use Value: 43.6 V VWM avoids false triggering during 20 V PD negotiation while clamping 10/1000 µs surges to ≤70.1 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51A-E3/5B | Same VWM (43.6 V), identical SMB package, but only commercial-grade (not AEC-Q101 or halogen-free). | Lacks automotive qualification and halogen-free certification; suitable for cost-sensitive industrial or consumer designs. | Select SMAJ51A-E3/5B when AEC-Q101 and halogen-free compliance are not required and budget constraints dominate. |
| 1.5SMC51A | Higher package thermal resistance (RθJA ≈ 125 °C/W vs. 100 °C/W); same electrical specs but larger SMC (DO-214AB) footprint. | Requires PCB layout change due to 7.11 mm × 6.22 mm SMC outline; less suitable for space-constrained automotive modules. | Choose 1.5SMC51A only if existing board uses SMC pads and thermal derating margins allow higher RθJA. |
Compared with SMAJ51A-E3/5B and 1.5SMC51A, the P6SMB51AHM3/I uniquely combines AEC-Q101 qualification, halogen-free construction, and optimized SMB thermal performance - making it the preferred choice for next-generation automotive and high-reliability industrial designs requiring zero compromise on compliance or clamping precision.
Availability
P6SMB51AHM3/I is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial sensor interfaces, telecom DC inputs, and consumer USB-C port protection requiring stable component supply and full regulatory compliance.
Supply support for P6SMB51AHM3/I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and telecom systems - engineered for robustness under harsh electrical and thermal conditions while meeting stringent environmental standards.
FAQ
What is the maximum clamping voltage of the P6SMB51AHM3/I under standard test conditions?
The P6SMB51AHM3/I has a maximum clamping voltage (VC) of 70.1 V when subjected to an 8.6 A peak pulse current with a 10/1000 µs waveform. This value is measured at TA = 25 °C and reflects the highest voltage the protected circuit will experience during a standardized surge event - a key parameter for verifying compatibility with downstream IC voltage tolerances.
Is the P6SMB51AHM3/I suitable for automotive applications?
Yes, the P6SMB51AHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly rated for operation from -65 °C to +150 °C and validated for mechanical shock, temperature cycling, and humidity exposure per AEC-Q101 - making it appropriate for engine control units, body electronics, and ADAS power domains.
How does the P6SMB51AHM3/I differ from the P6SMB51A variant?
The P6SMB51AHM3/I differs from the base P6SMB51A by its HM3 suffix: it is halogen-free and RoHS-compliant (vs. standard RoHS in M3), qualified to AEC-Q101, and supplied in 13" tape-and-reel (I) packaging. Electrically and thermally identical, the HM3/I version adds automotive reliability assurance and environmental compliance required for Tier 1 supply chains.
What is the reverse leakage current specification for the P6SMB51AHM3/I at its stand-off voltage?
At its 43.6 V stand-off voltage (VWM) and TA = 25 °C, the P6SMB51AHM3/I exhibits a maximum reverse leakage current (ID) of 1.0 µA. This low leakage ensures minimal power drain in always-on protection circuits and preserves battery life in automotive and portable applications where standby current is tightly constrained.
Does the P6SMB51AHM3/I require special PCB layout considerations?
Yes - the P6SMB51AHM3/I should be mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve specified thermal resistance (RθJA = 100 °C/W) and 600 W pulse rating. Short, direct traces to ground and minimized loop area are essential to preserve sub-1 ns response time and avoid inductive voltage overshoot during fast transients.
P6SMB51AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB51AHM3/I FAQ
1.How can I place an order for P6SMB51AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB51AHM3/I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P6SMB51AHM3/I reliable?
The price and inventory of P6SMB51AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB51AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB51AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB51AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB51AHM3/I?
P6SMB51AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB51AHM3/I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P6SMB51AHM3/I?
For technical support, including P6SMB51AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB51AHM3/I requirements.
6.How does Aetrix verify that P6SMB51AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB51AHM3/I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P6SMB51AHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB51AHM3/I?
All P6SMB51AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB51AHM3/I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P6SMB51AHM3/I part is unused and in its original packaging.
Return procedure for P6SMB51AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB51AHM3/I Tags
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