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Vishay General Semiconductor - Diodes Division P6SMB20AHE3/5B
- Part No.:
- P6SMB20AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20AHE3/5B.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB20AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 20 V standoff voltage (VWM), 21.0 V maximum breakdown voltage (VBR), and 27.7 V clamping voltage (VC) at 21.7 A peak pulse current. It delivers 600 W peak pulse power with 10/1000 μs waveform and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the P6SMB20AHE3/5B datasheet, P6SMB20AHE3/5B pinout, P6SMB20AHE3/5B application, or P6SMB20AHE3/5B equivalent, key selection criteria include unidirectional polarity, 17.1 V reverse standoff capability, 1.0 μA max reverse leakage at VWM, 150 °C max junction temperature, and RoHS-compliant matte tin-plated leads suitable for J-STD-002 soldering.
Technical Context
This TVS diode operates as a clamping device that diverts transient energy away from sensitive downstream circuitry during voltage surges induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads per terminal, it achieves 100 °C/W junction-to-ambient thermal resistance and supports repetitive 0.01% duty cycle pulses. The cathode band marking identifies polarity, and its MSL Level 1 rating permits reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.1 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR @ IT = 1.0 mA | 19.0–21.0 V - Breakdown threshold range where device transitions from high-impedance to low-impedance clamping state. |
| VC @ IPPM = 21.7 A | 27.7 V - Clamped voltage seen by protected IC/MOSFET during 600 W transient; determines maximum stress on downstream components. |
| IPPM | 21.7 A - Peak pulse current handled under 10/1000 μs waveform; defines surge handling capacity for common lightning/inductive transients. |
| PPPM | 600 W - Peak pulse power dissipation capability; enables robust protection against fast, high-energy transients without failure. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| Leakage @ VWM | ≤1.0 μA - Ultra-low reverse leakage ensures minimal signal distortion and power loss in standby or active analog/sensor circuits. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads. Cathode identified by a single band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or lower-potential rail in unidirectional TVS configuration. | Provides reference node for clamping action; must be routed with low-inductance path to minimize overshoot during surge events. |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., CAN_H, USB_VBUS, sensor supply). | Defines clamping direction: voltage on cathode side is limited to VC above anode potential during transients. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control, ADAS, and infotainment modules. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter consistency across thermal and humidity stress conditions. |
| MSL Level 1 (260 °C) | Enables compatibility with standard lead-free reflow profiles without preconditioning or special handling requirements. |
| 600 W peak pulse power (10/1000 μs) | Provides immunity to ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Level 3 surges in 12 V automotive systems. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfaces with tight absolute maximum ratings. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground to limit voltage excursions to ≤27.7 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during ISO 16750-2 load dump events (up to 35 V, 400 ms). |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage TVS connected between sensor output and ground to suppress ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity with <1.0 μA leakage at 17.1 V, avoiding DC offset errors in precision 4–20 mA or 0–5 V sensor outputs. |
| USB Port Overvoltage Protection | DC-DC Converter Input Stage Protection |
|
Use Scenario: Safeguarding USB 2.0 data lines and VBUS against hot-plug transients and external ESD coupling. IC Role / Device Role / Timing Role: Discrete unidirectional TVS on VBUS rail upstream of USB controller's internal protection diodes. Use Value: Clamps 10/1000 μs surges to 27.7 V within nanoseconds, preventing overstress of 5.5 V-rated USB PHY inputs. |
Use Scenario: Front-end surge suppression for 24 V input to buck converters powering FPGA or DSP subsystems. IC Role / Device Role / Timing Role: Primary TVS on converter input rail, coordinated with fuse and common-mode choke for full IEC 61000-4-5 compliance. Use Value: Absorbs 600 W transient energy without degradation, enabling reliable operation in factory automation equipment exposed to motor drive noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A-E3/5B | Same VWM (17.1 V), identical SMB package, but lower PPPM (400 W) and higher VC (32.4 V). | Limited to non-automotive or lower-energy surge environments (e.g., consumer USB ports); not AEC-Q101 qualified. | Select when cost sensitivity outweighs automotive qualification or 600 W surge headroom. |
| 1.5SMC20A | Same electrical specs (VWM, VBR, VC), but larger SMC (DO-214AB) package (2.54 mm pitch vs. 2.29 mm), higher RθJA (75 °C/W). | Requires PCB layout revision; better suited for manual repair or high-power industrial boards where space allows. | Choose only if existing design uses SMC footprint or requires higher thermal mass for sustained surge duty. |
Compared with SMAJ20A-E3/5B and 1.5SMC20A, P6SMB20AHE3/5B uniquely combines AEC-Q101 qualification, 600 W pulse rating, and SMB footprint - making it the preferred choice for space-constrained automotive and industrial designs requiring validated reliability and high surge margin.
Availability
P6SMB20AHE3/5B is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, USB VBUS safeguarding, and DC-DC converter input stage surge suppression requiring stable component supply across production lifecycles.
Supply support for P6SMB20AHE3/5B 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure, engineered for robust clamping response, low leakage, and seamless SMT integration in demanding environments.
FAQ
What is the clamping voltage of P6SMB20AHE3/5B at its rated peak pulse current?
The P6SMB20AHE3/5B has a maximum clamping voltage (VC) of 27.7 V when subjected to its rated peak pulse current of 21.7 A under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB20AHE3/5B maintains this clamping performance across its specified operating temperature range and is validated per AEC-Q101 stress testing protocols.
Is P6SMB20AHE3/5B suitable for automotive applications?
Yes, P6SMB20AHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101 qualified construction. It meets requirements for temperature cycling, high-temperature reverse bias, and surge endurance relevant to engine control units, body electronics, and ADAS subsystems. The P6SMB20AHE3/5B is rated for operation from −65 °C to +150 °C and supports ISO 7637-2 and ISO 16750-2 compliance when properly implemented in circuit layout.
What does the "5B" in P6SMB20AHE3/5B indicate?
The "5B" suffix in P6SMB20AHE3/5B specifies the packaging format: 13-inch diameter plastic tape and reel containing 3200 units. This differs from "52", which denotes a 7-inch reel with 750 units. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification, while "A" denotes unidirectional polarity. The P6SMB20AHE3/5B thus provides automotive-grade TVS protection in high-volume SMT-ready packaging optimized for automated placement.
How does P6SMB20AHE3/5B compare to bidirectional variants like P6SMB20CA?
P6SMB20AHE3/5B is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where current flows in one direction (e.g., 12 V supply to ground). In contrast, P6SMB20CA is bidirectional, symmetrical in both directions, and used for AC-coupled or differential signal lines (e.g., RS-485, CAN bus). The P6SMB20AHE3/5B offers tighter VBR tolerance (19.0–21.0 V) and lower leakage than its bidirectional counterpart, making it preferable for precision DC protection where polarity is fixed and leakage must be minimized.
What is the thermal resistance of P6SMB20AHE3/5B, and how does it affect layout?
The P6SMB20AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no additional heatsinking; layout must provide adequate copper area and via stitching to maintain junction temperature below 150 °C during repetitive surges. The P6SMB20AHE3/5B thermal performance is validated per JEDEC standards and directly impacts sustained surge duty cycle capability in high-frequency transient environments.
P6SMB20AHE3/5B 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- 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)
P6SMB20AHE3/5B FAQ
1.How can I place an order for P6SMB20AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20AHE3/5B 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 P6SMB20AHE3/5B reliable?
The price and inventory of P6SMB20AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20AHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB20AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20AHE3/5B?
P6SMB20AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20AHE3/5B 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 P6SMB20AHE3/5B?
For technical support, including P6SMB20AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20AHE3/5B requirements.
6.How does Aetrix verify that P6SMB20AHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB20AHE3/5B 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 P6SMB20AHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB20AHE3/5B?
All P6SMB20AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20AHE3/5B, 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 P6SMB20AHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB20AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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