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Vishay General Semiconductor - Diodes Division P6SMB39AHE3_A/H
- Part No.:
- P6SMB39AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39AHE3_A/H.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,356
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Product details
Overview
P6SMB39AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 39 V breakdown voltage (VBR = 37.1–41.0 V at IT = 1.0 mA), 53.9 V maximum clamping voltage (VC) at 11.1 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power electronics.
For engineers reviewing the P6SMB39AHE3_A/H datasheet, P6SMB39AHE3_A/H pinout, P6SMB39AHE3_A/H application, or P6SMB39AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 33.3 V stand-off voltage (VWM), <1.0 μA reverse leakage at VWM, and thermal resistance of 100 °C/W (junction-to-ambient).
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
Designed for surface-mount assembly on standard PCB copper pads (0.2" × 0.2"), it delivers 600 W peak pulse power under JEDEC-standard 10/1000 μs waveform with 0.01% duty cycle. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at 1.0 mA test current - defines precise avalanche initiation window for repeatable clamping behavior |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 53.9 V at 11.1 A - clamped voltage seen by protected circuit during worst-case 600 W transient |
| IPPM | 11.1 A - peak surge current capability under 10/1000 μs waveform, derated above 25 °C |
| PPPM | 600 W - transient energy absorption capacity without failure, validated per Fig. 1 curve |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient air on standard 0.2" × 0.2" copper pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads; cathode indicated by band on body; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or low-side reference in unidirectional TVS configuration |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., power rail or signal trace); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensors |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV open-circuit) without degradation |
| Glass passivated junction | Ensures stable VBR tolerance (±5%) and low leakage (<1 μA) over lifetime |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow at 260 °C peak without preconditioning |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream ICs during transient events |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 36 V battery-fed ECUs from load-dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges before they reach PMIC or MCU inputs. Use Value: Limits voltage excursion to ≤53.9 V during 11.1 A transients, preventing latch-up or gate oxide damage in 40 V-rated components. |
Use Scenario: Shielding analog output lines of pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected across differential signal pair (e.g., 4–20 mA loop) to suppress EFT bursts and inductive kickback. Use Value: Sub-1 ns response captures fast transients while 33.3 V VWM avoids interference with normal 24 V system signaling. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Driver Interface |
|
Use Scenario: Safeguarding PoE-powered switch ports against cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS on +48 V input rail, referenced to return path, absorbing 10/1000 μs surges. Use Value: 600 W rating handles IEEE 802.3bt-compliant surge tests; AEC-Q101 grade supports extended field life in outdoor enclosures. |
Use Scenario: Guarding microcontroller GPIO pins driving H-bridge gate drivers in washing machine control boards. IC Role / Device Role / Timing Role: TVS placed at MCU output pin to absorb back-EMF from relay coils and brushed motor commutation spikes. Use Value: 53.9 V clamping prevents CMOS input overstress; SMB footprint enables compact layout near high-noise switching nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39A-E3/5B | Same VBR range (37.1–41.0 V) but SMA package (DO-214AC); RθJA = 110 °C/W; no AEC-Q101 qualification | Lower power density; suitable for commercial-grade consumer products only | Select when cost sensitivity outweighs automotive reliability requirements and board space permits larger footprint |
| 1.5SMC39AHE3_A/H | Same VBR, VC, and AEC-Q101 rating but SMC (DO-214AB) package; higher IPPM (12.3 A); RθJA = 85 °C/W | Better thermal performance and surge margin; requires larger PCB pad area | Choose for high-reliability industrial systems needing >11.1 A surge headroom and improved thermal dissipation |
Compared with SMAJ39A-E3/5B, P6SMB39AHE3_A/H offers tighter thermal management and automotive qualification in a smaller SMB footprint; versus 1.5SMC39AHE3_A/H, it trades 1.2 A lower IPPM for 15% smaller board area and identical clamping performance.
Availability
P6SMB39AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power inputs, and appliance motor control circuits requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB39AHE3_A/H 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 optimization.
The P6SMB Series targets high-energy transient suppression in space-constrained, high-reliability applications-especially automotive and industrial systems where AEC-Q101 qualification, low clamping ratio, and robust surge handling are mandatory.
FAQ
What is the breakdown voltage tolerance for P6SMB39AHE3_A/H?
The P6SMB39AHE3_A/H has a specified breakdown voltage range of 37.1 V to 41.0 V at 1.0 mA test current, corresponding to a ±5% tolerance around the nominal 39 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports reliable design margining in safety-critical automotive applications where P6SMB39AHE3_A/H is commonly deployed.
Does P6SMB39AHE3_A/H meet automotive qualification standards?
Yes, P6SMB39AHE3_A/H is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay documentation. It undergoes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life per AEC-Q101 Rev D. This makes P6SMB39AHE3_A/H suitable for under-hood and cabin electronics where automotive-grade reliability is required.
What is the maximum clamping voltage of P6SMB39AHE3_A/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB39AHE3_A/H is 53.9 V at 11.1 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value represents the upper limit of voltage imposed on the protected circuit during worst-case transient events and is critical for ensuring compatibility with 40 V-rated downstream components in systems using P6SMB39AHE3_A/H.
How does the SMB package of P6SMB39AHE3_A/H compare thermally to larger packages?
P6SMB39AHE3_A/H in SMB (DO-214AA) package has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W on 0.2" × 0.2" copper pads. While larger packages like SMC offer lower RθJA (e.g., 85 °C/W), the SMB footprint enables high-density layouts. Engineers must verify board-level copper area and airflow when using P6SMB39AHE3_A/H in sustained surge environments.
Is P6SMB39AHE3_A/H unidirectional or bidirectional?
P6SMB39AHE3_A/H is a unidirectional TVS diode, indicated by the "A" suffix and presence of cathode band marking. It conducts only during reverse-biased overvoltage events and blocks forward current like a standard diode. This configuration is optimal for DC power rail protection where polarity is fixed, unlike bidirectional variants (e.g., P6SMB39CA) used in AC or differential signal paths.
P6SMB39AHE3_A/H 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:
- 1
- Bidirectional Channels:
- -
- 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)
P6SMB39AHE3_A/H FAQ
1.How can I place an order for P6SMB39AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39AHE3_A/H 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 P6SMB39AHE3_A/H reliable?
The price and inventory of P6SMB39AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB39AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB39AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39AHE3_A/H?
P6SMB39AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39AHE3_A/H 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 P6SMB39AHE3_A/H?
For technical support, including P6SMB39AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB39AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB39AHE3_A/H 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 P6SMB39AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB39AHE3_A/H?
All P6SMB39AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39AHE3_A/H, 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 P6SMB39AHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB39AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39AHE3_A/H Tags
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