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Vishay General Semiconductor - Diodes Division P6SMB39CAHE3/5B
- Part No.:
- P6SMB39CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39CAHE3/5B.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,380
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Product details
Overview
P6SMB39CAHE3/5B 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 or power lines. It features a 33.3 V standoff voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, 53.9 V maximum clamping voltage (VC) at 11.1 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB39CAHE3/5B datasheet, P6SMB39CAHE3/5B pinout, P6SMB39CAHE3/5B application, or P6SMB39CAHE3/5B equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, SMB (DO-214AA) package thermal performance, and compliance with IEC 61000-4-2/4-5 surge immunity requirements.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering identical clamping behavior regardless of transient polarity - critical for protecting AC-coupled or differential signal paths. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), while the low incremental surge resistance enables effective energy diversion during ESD or lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and exhibits a ±0.100 %/°C temperature coefficient of VBR, supporting stable protection across wide ambient ranges. Its MSL Level 1 rating (per J-STD-020) and matte tin-plated leads ensure compatibility with standard SMT reflow profiles up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 33.3 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 37.1–41.0 V at 1 mA - Voltage at which device enters avalanche conduction; ensures reliable triggering under transient stress. |
| VC (Clamping Voltage) | 53.9 V at 11.1 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines safe overvoltage margin for downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy dissipation capability; supports robust protection against IEC 61000-4-5 Level 4 surges. |
| TJmax | 150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB layout requirements for sustained power handling. |
| 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, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals serve as bidirectional conduction paths; no cathode band marking - device functions identically in either orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - eliminates need for polarity-aware placement in AC or differential line protection. |
| 600 W peak pulse power | Withstands 10/1000 µs surges up to 11.1 A - meets IEC 61000-4-5 Level 4 (4 kV) requirements when properly mounted. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces - supports long-term field reliability. |
| MSL Level 1 moisture sensitivity | Compatible with standard SMT reflow profiles up to 260 °C peak - no dry-pack or baking required prior to assembly. |
| Glass passivated junction | Stable leakage <1.0 µA at VWM and consistent VBR over life - ensures predictable protection behavior across temperature and aging. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before it reaches signal conditioning circuitry. Use Value: Maintains signal integrity during 12 V/24 V system transients by limiting voltage to ≤53.9 V, preventing latch-up or damage to 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Fast-response TVS placed across input terminals to absorb repetitive 600 W surges without degradation. Use Value: Enables >100,000 surge cycles with no parameter shift due to stable glass-passivated junction and low thermal resistance. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
|
Use Scenario: Shielding Ethernet PHY or RS-485 transceivers from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device in multi-stage protection scheme, working with GDTs and current-limiting resistors. Use Value: Clamps 10/1000 µs surges to 53.9 V within <1 ns - faster than MOV-based alternatives and compatible with high-speed data rates. |
Use Scenario: Adding secondary-level surge immunity to USB-C or barrel-jack inputs in wall adapters and charging bricks. IC Role / Device Role / Timing Role: Low-profile SMB-mounted TVS bridging input DC lines to ground, leveraging space-constrained PCB real estate. Use Value: Delivers 600 W pulse handling in 2.2 mm × 3.9 mm footprint - reduces board area vs. larger DO-214AB packages while maintaining AEC-Q101 reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33CA | Lower peak pulse power (400 W), higher VC (53.3 V at 7.5 A), same SMB package and bidirectional function. | Not AEC-Q101 qualified; suitable for commercial-grade consumer or computing applications only. | Select when cost sensitivity outweighs automotive qualification and 600 W headroom is not required. |
| 1.5SMC33CA | Higher power rating (1500 W), larger SMC (DO-214AB) package, VC = 53.3 V at 28.3 A - physically incompatible with SMB footprints. | Used where higher surge energy must be absorbed and board space allows larger package. | Choose only if PCB layout permits SMC footprint and system-level surge testing exceeds IEC 61000-4-5 Level 4. |
Compared with SMAJ33CA and 1.5SMC33CA, P6SMB39CAHE3/5B uniquely balances AEC-Q101 qualification, 600 W capability, and SMB footprint - making it optimal for space-constrained automotive and industrial designs requiring validated reliability without layout redesign.
Availability
P6SMB39CAHE3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom line interfaces, and consumer power adapter designs requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB39CAHE3/5B 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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The P6SMB Series was engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - combining AEC-Q101 qualification, precise clamping, and robust surge handling in compact surface-mount packages.
FAQ
What does the "CA" suffix indicate in P6SMB39CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration - meaning P6SMB39CAHE3/5B provides symmetrical clamping in both polarities, with identical VBR and VC characteristics regardless of voltage polarity. This eliminates polarity marking and simplifies placement for AC-coupled or differential signal lines, unlike unidirectional variants (e.g., P6SMB39A) that require cathode alignment.
Is P6SMB39CAHE3/5B qualified for automotive use?
Yes, P6SMB39CAHE3/5B is AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, making P6SMB39CAHE3/5B suitable for under-hood and chassis-mounted automotive electronics where reliability is mission-critical.
What is the maximum clamping voltage of P6SMB39CAHE3/5B under surge conditions?
The maximum clamping voltage (VC) of P6SMB39CAHE3/5B is 53.9 V at 11.1 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events - ensuring compatibility with 3.3 V, 5 V, and 12 V logic and interface ICs.
How does the SMB (DO-214AA) package of P6SMB39CAHE3/5B affect thermal performance?
The SMB package of P6SMB39CAHE3/5B delivers a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This enables reliable 5.0 W steady-state power dissipation at 50 °C ambient and supports short-duration 600 W surge handling without thermal runaway - provided PCB layout follows Vishay's recommended pad dimensions.
Can P6SMB39CAHE3/5B replace P6SMB33CA in an existing design?
P6SMB39CAHE3/5B is not a direct replacement for P6SMB33CA due to higher VWM (33.3 V vs. 28.2 V) and VBR (37.1–41.0 V vs. 31.4–34.7 V), which shifts the clamping threshold upward. Substituting P6SMB39CAHE3/5B may leave lower-voltage circuits unprotected during marginal transients; verification of system-level surge margin and compatibility with upstream current-limiting elements is required before adoption.
P6SMB39CAHE3/5B 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- 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)
P6SMB39CAHE3/5B FAQ
1.How can I place an order for P6SMB39CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39CAHE3/5B 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 P6SMB39CAHE3/5B reliable?
The price and inventory of P6SMB39CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB39CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB39CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39CAHE3/5B?
P6SMB39CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39CAHE3/5B 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 P6SMB39CAHE3/5B?
For technical support, including P6SMB39CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB39CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB39CAHE3/5B 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 P6SMB39CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB39CAHE3/5B?
All P6SMB39CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39CAHE3/5B, 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 P6SMB39CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB39CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39CAHE3/5B Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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