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Vishay General Semiconductor - Diodes Division P6SMB36AHE3/5B
- Part No.:
- P6SMB36AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB36AHE3/5B.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,374
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Product details
Overview
P6SMB36AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 36 V breakdown voltage (VBR = 34.2–37.8 V at 1 mA), 30.8 V stand-off voltage (VWM), 49.9 V maximum clamping voltage (VC) at 12.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB36AHE3/5B datasheet, P6SMB36AHE3/5B pinout, P6SMB36AHE3/5B application, or P6SMB36AHE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), low incremental surge resistance, and compliance with J-STD-020 MSL level 1 reflow profile.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), while the SMB package supports automated placement and meets UL 94 V-0 flammability requirements.
The device is rated for 150 °C maximum junction temperature, derates linearly above 25 °C ambient per Figure 2, and delivers 49.9 V clamping at 12.0 A IPPM under 10/1000 µs transient conditions - enabling robust protection of 3.3 V/5 V/12 V rail interfaces without crowbar action.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA test current - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 30.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 49.9 V at 12.0 A - clamped voltage seen by protected circuit during 600 W transient event |
| IPPM | 12.0 A - peak pulse current capability with 10/1000 µs waveform, defining surge energy handling |
| PPPM | 600 W - peak pulse power dissipation capacity, enabling protection against IEC 61000-4-5 Level 4 surges |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, requiring minimum 5.0 mm × 5.0 mm copper pads for full rating |
| TJ max | +150 °C - maximum junction temperature, supporting operation in under-hood automotive and industrial environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche terminal | Connected to protected line; conducts during overvoltage to clamp to VC |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground or lower-potential rail to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) across -65 °C to +150 °C |
| MSL level 1 moisture sensitivity | Enables standard reflow assembly without baking; peak reflow temperature up to 260 °C permitted |
| 600 W peak pulse power | Supports IEC 61000-4-5 combination wave (1.2/50 µs voltage, 8/20 µs current) surge immunity up to Level 4 |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes let-through voltage during transients, reducing stress on downstream 36 V-rated components |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24 V DC input rails in programmable logic controllers (PLCs) against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤49.9 V, preventing damage to 36 V-rated input stages and ensuring uninterrupted operation during 100 V/500 ms load dump events. |
Use Scenario: Safeguarding LIN bus transceivers and window motor drivers in BCM modules exposed to battery voltage spikes. IC Role / Device Role / Timing Role: Standoff protection on 12 V supply lines feeding CAN/LIN interface ICs and high-side switches. Use Value: Withstands repetitive 600 W pulses at 0.01% duty cycle, maintaining signal integrity during ignition transients and alternator load dumps per ISO 7637-2 Pulse 5a. |
| Telecom Interface Surge Protection | Consumer Sensor Signal Line Protection |
Use Scenario: Shielding RS-485 transceiver power pins in outdoor base station equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on VCC line upstream of local LDO regulators, coordinated with secondary GDT or MOV stages. Use Value: Fast <1 ns response captures initial surge edge; 49.9 V clamping prevents latch-up in 5 V tolerant transceivers during 1 kV/0.5 µs fast-rising transients. |
Use Scenario: Guarding analog output lines of temperature/humidity sensors in smart home hubs against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100 pF at 0 V) placed directly at connector entry point before signal conditioning op-amps. Use Value: Clamps ±8 kV contact ESD (IEC 61000-4-2) to <50 V within nanoseconds, preserving ADC accuracy and avoiding false triggers in firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5B | Same VBR range (34.2–37.8 V), but 400 W PPPM, higher RθJA (140 °C/W), non-AEC-Q101 | Limited to commercial-grade industrial use; insufficient for automotive BCM or harsh-environment telecom | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin |
| 1.5SMC36A | Same electrical specs but SMC (DO-214AB) package - 2.5 mm wider, incompatible with SMB footprints | Requires PCB layout change; not drop-in; higher thermal mass but same clamping performance | Choose only if existing design uses SMC pads or requires higher thermal mass for sustained pulse trains |
Compared with SMAJ36A-E3/5B and 1.5SMC36A, P6SMB36AHE3/5B uniquely combines AEC-Q101 qualification, SMB footprint compatibility, and full 600 W surge rating - making it the preferred choice for space-constrained automotive and industrial designs requiring validated reliability.
Availability
P6SMB36AHE3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom interface protection, and consumer sensor signal line protection requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB36AHE3/5B 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-energy transient suppression in space-constrained surface-mount applications, engineered for automotive, industrial, and telecom systems where AEC-Q101 qualification and consistent clamping behavior are mandatory.
FAQ
What is the maximum clamping voltage of the P6SMB36AHE3/5B under standard test conditions?
The P6SMB36AHE3/5B has a maximum clamping voltage (VC) of 49.9 V at 12.0 A peak pulse current (IPPM) using a 10/1000 µs waveform. This value is measured per JEDEC standards and represents the upper limit of voltage imposed on the protected circuit during a defined surge event. The P6SMB36AHE3/5B maintains this clamping performance across its specified operating temperature range and is validated for repetitive surge duty cycles up to 0.01%.
Is the P6SMB36AHE3/5B suitable for automotive applications?
Yes, the P6SMB36AHE3/5B is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's P6SMB series datasheet (Rev. 09-Jan-2024, Doc. #88370). It undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per the AEC-Q101 standard. The P6SMB36AHE3/5B is explicitly recommended for automotive body control modules, infotainment power rails, and sensor interfaces where transient immunity and long-term reliability are required.
What does the "HE3/5B" suffix indicate in P6SMB36AHE3/5B?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification, while "5B" specifies packaging in 13-inch diameter plastic tape and reel containing 3200 units. This differs from "52" (7-inch reel, 750 units) and aligns with high-volume SMT assembly requirements. The P6SMB36AHE3/5B also meets JESD201 Class 2 whisker resistance and J-STD-020 MSL level 1 reflow specifications, confirming suitability for lead-free reflow processes.
How does the P6SMB36AHE3/5B compare to bidirectional TVS diodes like P6SMB36CA?
The P6SMB36AHE3/5B is unidirectional and intended for DC line protection with defined polarity, whereas P6SMB36CA is bidirectional and suited for AC or differential signal lines. The P6SMB36AHE3/5B exhibits lower leakage (<1 µA at 30.8 V) and higher surge current capability in one direction, while P6SMB36CA provides symmetrical clamping in both polarities but with reduced VBR range (34.2–37.8 V only in one direction per half-cycle). Selection depends on circuit topology - use P6SMB36AHE3/5B for 24 V supply rails, P6SMB36CA for RS-485 or antenna lines.
What PCB layout guidance applies to the P6SMB36AHE3/5B to achieve rated 600 W performance?
To achieve the full 600 W peak pulse power rating, the P6SMB36AHE3/5B must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Trace width should exceed 1.5 mm, and ground planes must be solid beneath the device. Thermal vias (≥4× 0.3 mm) under each pad improve heat dissipation. Failure to meet this layout results in derated IPPM and elevated junction temperature - the P6SMB36AHE3/5B's RθJA degrades from 100 °C/W to >150 °C/W with inadequate copper area.
P6SMB36AHE3/5B 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
P6SMB36AHE3/5B FAQ
1.How can I place an order for P6SMB36AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB36AHE3/5B 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 P6SMB36AHE3/5B reliable?
The price and inventory of P6SMB36AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB36AHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB36AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB36AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB36AHE3/5B?
P6SMB36AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB36AHE3/5B 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 P6SMB36AHE3/5B?
For technical support, including P6SMB36AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB36AHE3/5B requirements.
6.How does Aetrix verify that P6SMB36AHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB36AHE3/5B 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 P6SMB36AHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB36AHE3/5B?
All P6SMB36AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB36AHE3/5B, 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 P6SMB36AHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB36AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB36AHE3/5B Tags
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