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Vishay General Semiconductor - Diodes Division P6SMB75CAHM3_A/I
- Part No.:
- P6SMB75CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB75CAHM3_A/I.pdf
- Description:
- TVS DIODE 64.1VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB75CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 75 V standoff voltage (VWM), 103 V maximum clamping voltage (VC) at 5.8 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P6SMB75CAHM3_A/I datasheet, P6SMB75CAHM3_A/I pinout, P6SMB75CAHM3_A/I application, or P6SMB75CAHM3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, SMB (DO-214AA) package thermal performance, and compliance with IEC 61000-4-2/4-4/4-5 surge immunity requirements.
Technical Context
This device operates as a voltage-clamped crowbar during transient events: when reverse voltage exceeds its breakdown threshold (VBR min = 71.3 V, max = 78.8 V at 1 mA), it rapidly switches to low-impedance conduction, limiting downstream voltage to ≤103 V. Its bidirectional architecture ensures symmetrical clamping in both polarities without polarity marking.
Thermally, it uses a glass-passivated junction with 150 °C max junction temperature and 100 °C/W junction-to-ambient thermal resistance (RθJA) on standard 0.2" × 0.2" copper pads. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification per ordering code conventions in the Vishay P6SMB series.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 75 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - Confirmed bidirectional breakdown window defining turn-on precision |
| VC (Clamping) | 103 V at IPPM = 5.8 A - Peak voltage seen by protected circuit under 10/1000 μs surge |
| PPPM | 600 W - Surge energy handling capacity per single 10/1000 μs pulse, duty cycle ≤ 0.01 % |
| ID (Leakage) | 1.0 μA max at VWM - Low standby current preserving signal integrity in high-impedance nodes |
| Package | SMB (DO-214AA) - Surface-mount outline with 2.20 mm height, optimized for automated placement and 260 °C reflow |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function as anode/cathode depending on applied voltage polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous voltage polarity; no fixed polarity |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetric clamping path across both directions |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 3 (1 kV surge) on 2 Ω source impedance without degradation |
| AEC-Q101 qualified (HM3) | Validated for automotive under-hood and chassis applications requiring extended temperature and lifetime reliability |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes protected circuit overvoltage margin while maintaining robust surge margin |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity handling |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensor outputs from load dump and ESD events in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to shunt transients before reaching signal conditioning ICs. Use Value: Clamps 75 V nominal supply surges to ≤103 V, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers against field wiring faults and lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across input terminals to clamp common-mode transients up to ±1 kV (IEC 61000-4-5). Use Value: Maintains <1.0 μA leakage at 75 V, avoiding offset error in precision current-to-voltage conversion stages. |
| Telecom Line Card Protection | Consumer USB Port ESD Guard |
|
Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers exposed to induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: First-stage transient suppressor ahead of gas discharge tube (GDT) or polymer PTC for hybrid surge suppression. Use Value: 103 V clamping voltage ensures downstream GDT triggers only above safe threshold, extending system-level surge rating. |
Use Scenario: Secondary ESD protection on USB 2.0 D+/D− lines after primary TVS array, targeting contact discharge per IEC 61000-4-2 Level 4 (±15 kV). IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) clamping element absorbing residual ESD energy missed by upstream protection. Use Value: Symmetric bidirectional response eliminates need for dual unidirectional devices, reducing BOM count and PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ75CA | Same VWM (75 V) and VC (103 V), but lower PPPM (400 W); SMA package (DO-214AC), higher RθJA (140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump where 600 W margin is required | Select when cost-sensitive consumer designs prioritize smaller footprint over surge headroom |
| 1.5KE75CA | Higher PPPM (1500 W), axial-leaded DO-15 package; larger size, manual assembly only; VBR tighter (71.3–75.0 V) | Used in legacy through-hole power supplies; incompatible with SMT production and space-constrained layouts | Choose only for retrofit or high-surge industrial power entry where automated assembly is not required |
Compared with SMAJ75CA and 1.5KE75CA, P6SMB75CAHM3_A/I delivers optimal balance of 600 W surge capability, AEC-Q101 qualification, SMB footprint, and bidirectional symmetry - making it the preferred choice for new SMT-based automotive and industrial designs requiring validated reliability and production scalability.
Availability
P6SMB75CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line card protection requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101 qualified parts.
Supply support for P6SMB75CAHM3_A/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, rectifiers, MOSFETs, and TVS devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for robustness under repetitive surge stress and compatibility with modern SMT manufacturing.
FAQ
What does the "CA" suffix indicate in P6SMB75CAHM3_A/I?
The "CA" suffix in P6SMB75CAHM3_A/I denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression for both positive and negative polarity surges. This eliminates the need for polarity orientation during placement and enables use in AC-coupled or floating circuits - a critical feature for protecting differential signal lines like CAN, RS-485, or Ethernet PHYs without risk of incorrect installation. The P6SMB75CAHM3_A/I achieves this via internal back-to-back diode structure.
Is P6SMB75CAHM3_A/I suitable for automotive applications?
Yes, P6SMB75CAHM3_A/I is explicitly qualified to AEC-Q101 standards, as confirmed by its HM3 suffix and Vishay's ordering documentation. It undergoes rigorous testing for temperature cycling, humidity, mechanical shock, and surge endurance - validating its suitability for under-hood and chassis-mounted automotive electronics. Its 150 °C maximum junction temperature and stable clamping performance across -65 °C to +150 °C ensure reliable operation in harsh vehicle environments where P6SMB75CAHM3_A/I protects ECUs, ADAS sensors, and body control modules.
How does the clamping voltage of P6SMB75CAHM3_A/I compare to its standoff voltage?
P6SMB75CAHM3_A/I has a 75 V standoff voltage (VWM) and a maximum clamping voltage (VC) of 103 V at 5.8 A peak pulse current - yielding a clamping ratio of approximately 1.37. This tight ratio ensures minimal overvoltage stress on downstream ICs during transients, especially critical for protecting 3.3 V or 5 V logic interfaces. The low incremental surge resistance inherent to the glass-passivated junction contributes to this controlled voltage rise, distinguishing P6SMB75CAHM3_A/I from higher-ratio alternatives that may expose circuits to damaging overshoot.
What is the thermal performance of P6SMB75CAHM3_A/I on a standard PCB layout?
When mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, P6SMB75CAHM3_A/I exhibits a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W. This allows sustained 5.0 W power dissipation at TA = 50 °C and supports reliable operation during repetitive surge events. The SMB package's low profile and matte tin-plated leads ensure compatibility with J-STD-002 solderability standards and 260 °C peak reflow profiles - essential for consistent thermal performance in high-volume P6SMB75CAHM3_A/I deployments.
Does P6SMB75CAHM3_A/I require a heatsink for standard surge protection use?
No, P6SMB75CAHM3_A/I does not require an external heatsink for typical transient suppression applications because its 600 W peak pulse power rating applies to non-repetitive 10/1000 μs waveforms at ≤0.01 % duty cycle - generating negligible average power. The device relies on PCB copper thermal mass for transient energy dissipation. Heatsinking is unnecessary unless operating continuously near its 5.0 W steady-state power limit, which is uncommon in TVS applications. The SMB package's RθJL of 20 °C/W further enables efficient heat transfer to PCB traces, confirming P6SMB75CAHM3_A/I's self-sufficient thermal design.
P6SMB75CAHM3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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)
P6SMB75CAHM3_A/I FAQ
1.How can I place an order for P6SMB75CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB75CAHM3_A/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 P6SMB75CAHM3_A/I reliable?
The price and inventory of P6SMB75CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB75CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB75CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB75CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB75CAHM3_A/I?
P6SMB75CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB75CAHM3_A/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 P6SMB75CAHM3_A/I?
For technical support, including P6SMB75CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB75CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB75CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB75CAHM3_A/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 P6SMB75CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB75CAHM3_A/I?
All P6SMB75CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB75CAHM3_A/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 P6SMB75CAHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB75CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB75CAHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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