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Vishay General Semiconductor - Diodes Division P6SMB30CAHE3_A/I
- Part No.:
- P6SMB30CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB30CAHE3_A/I.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB30CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal and power lines. It features a 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 41.4 V maximum clamping voltage (VC) at 14.5 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB30CAHE3_A/I datasheet, P6SMB30CAHE3_A/I pinout, P6SMB30CAHE3_A/I application, or P6SMB30CAHE3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, SMB (DO-214AA) package compatibility, thermal resistance (RθJA = 100 °C/W), and compliance with IEC 61000-4-2/4-4/4-5 surge immunity requirements.
Technical Context
This TVS diode operates as a voltage-clamping protection device across two terminals with symmetrical reverse/forward conduction behavior. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 μs transients at 0.01% duty cycle.
The device is rated for -65 °C to +150 °C operating junction temperature, meets MSL level 1 per J-STD-020, and uses matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Its bidirectional polarity eliminates need for orientation during automated placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 33.3–37.1 V at 1 mA - Voltage at which device transitions from high-impedance to low-impedance clamping state; ensures reliable turn-on during transients. |
| VC (Clamping Voltage) | 41.4 V at 14.5 A IPPM - Maximum voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capacity without failure; validated per Fig. 1 derating curve. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; critical for thermal design in enclosed environments. |
| TJ max. | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and industrial ambient conditions. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with molded UL 94 V-0 compound and matte tin-plated leads. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; conducts surge current in either direction when voltage exceeds VBR. |
| Cathode | Transient current exit (bidirectional) | Second terminal of symmetrical PN junction; completes clamping path regardless of surge polarity. |
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 (10/1000 μs) | Handles high-energy surges common in automotive load-dump and industrial switching noise events. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics use with extended temperature, humidity, and lifetime reliability testing. |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free assembly without moisture-induced popcorning or delamination. |
| Glass passivated junction | Ensures stable leakage current (<1 μA at VWM), low capacitance, and long-term parameter stability. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ESD and load-dump transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector or IC input pins to shunt surge energy before it reaches sensitive circuitry. Use Value: Maintains signal integrity under ISO 16750-2 pulse 5a (load dump) and IEC 61000-4-2 ±15 kV contact discharge without latch-up or degradation. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers against induced surges from relay coil switching and motor drive noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input lines, positioned upstream of optocoupler or Schmitt-trigger input stages. Use Value: Limits transient voltage to ≤41.4 V, preventing damage to microcontroller GPIOs rated for 36 V absolute maximum. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Control Board |
|
Use Scenario: Protecting Ethernet PHY interface and auxiliary power rails in telecom line cards exposed to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after gas discharge tube (GDT) or polymer PTC to refine clamping voltage and absorb residual energy. Use Value: Achieves <1 ns response time and 41.4 V clamping to prevent PHY IC latch-up during 10/700 μs combination wave testing. |
Use Scenario: Shielding MCU-based motor driver circuits (e.g., BLDC gate drivers) from back-EMF spikes generated during commutation in washing machines or HVAC fans. IC Role / Device Role / Timing Role: Localized clamp across half-bridge supply rails or gate drive return paths to suppress ringing and overshoot. Use Value: Withstands 14.5 A peak pulse current and dissipates 600 W transient energy without parametric shift or thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | Same VWM (30 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load-dump or industrial 600 W surge requirements. | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin with RθJA derating. |
| 1.5SMC33CA | Higher VWM (33 V), same PPPM (600 W), larger SMC package (DO-214AB), RθJA = 60 °C/W | Better thermal performance but requires more PCB area; VWM mismatch may reduce safety margin in 30 V systems. | Choose for higher-power industrial designs where thermal management is critical and 3 V VWM tolerance is acceptable. |
Compared with SMAJ30CA and 1.5SMC33CA, P6SMB30CAHE3_A/I delivers optimal balance of AEC-Q101 qualification, SMB footprint compatibility, 600 W surge handling, and precise 30 V standoff-making it preferred for space-constrained automotive and industrial modules requiring production-grade reliability.
Availability
P6SMB30CAHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input conditioning, and telecom line card surge protection requiring stable component supply, AEC-Q101 traceability, and DO-214AA package consistency.
Supply support for P6SMB30CAHE3_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, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where high pulse power, low clamping, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of P6SMB30CAHE3_A/I at its rated peak pulse current?
The P6SMB30CAHE3_A/I has a maximum clamping voltage (VC) of 41.4 V at 14.5 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance remains stable across its -65 °C to +150 °C operating range, making P6SMB30CAHE3_A/I suitable for under-hood automotive and industrial applications where thermal variation affects protection margins.
Is P6SMB30CAHE3_A/I AEC-Q101 qualified, and what does the HE3 suffix indicate?
Yes, P6SMB30CAHE3_A/I is AEC-Q101 qualified. The HE3 suffix denotes RoHS-compliant construction with AEC-Q101 qualification, as confirmed in the Vishay ordering information table (page 3 of document 88370). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per JS-001, validating P6SMB30CAHE3_A/I for use in automotive electronic control units, body electronics, and ADAS subsystems where long-term reliability under thermal and electrical stress is required.
How does the bidirectional configuration of P6SMB30CAHE3_A/I affect its PCB layout and usage?
The bidirectional configuration of P6SMB30CAHE3_A/I means it has no cathode marking and functions identically in both directions - eliminating polarity concerns during placement and enabling protection of AC-coupled or floating signal lines such as CAN bus, RS-485, or transformer-isolated power rails. Unlike unidirectional TVS diodes, P6SMB30CAHE3_A/I does not require orientation alignment on the PCB, simplifying automated assembly and reducing risk of misplacement-related field failures.
What is the thermal resistance of P6SMB30CAHE3_A/I, and how does it impact power dissipation?
P6SMB30CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Thermal Characteristics table (page 3 of datasheet 88370). This value determines steady-state temperature rise under DC power dissipation (PD = 5.0 W) and influences derating above TA = 25 °C. For example, at 85 °C ambient, the usable power drops to ~3.0 W - a critical consideration for P6SMB30CAHE3_A/I in sealed enclosures or high-density layouts.
Can P6SMB30CAHE3_A/I replace unidirectional TVS diodes like P6SMB30A in existing designs?
No - P6SMB30CAHE3_A/I is bidirectional and cannot directly replace unidirectional P6SMB30A without circuit review. While both share identical VWM (30 V), VBR (33.3–37.1 V), and VC (41.4 V), the unidirectional version conducts only in reverse bias and requires correct cathode orientation. Substituting P6SMB30CAHE3_A/I in a unidirectional layout may cause unintended forward conduction during normal operation. Use P6SMB30CAHE3_A/I only where bidirectional clamping is explicitly required and verified in system-level surge testing.
P6SMB30CAHE3_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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB30CAHE3_A/I FAQ
1.How can I place an order for P6SMB30CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB30CAHE3_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 P6SMB30CAHE3_A/I reliable?
The price and inventory of P6SMB30CAHE3_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 P6SMB30CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB30CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB30CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB30CAHE3_A/I?
P6SMB30CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB30CAHE3_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 P6SMB30CAHE3_A/I?
For technical support, including P6SMB30CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB30CAHE3_A/I requirements.
6.How does Aetrix verify that P6SMB30CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB30CAHE3_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 P6SMB30CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB30CAHE3_A/I?
All P6SMB30CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB30CAHE3_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 P6SMB30CAHE3_A/I part is unused and in its original packaging.
Return procedure for P6SMB30CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB30CAHE3_A/I Tags
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