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Vishay General Semiconductor - Diodes Division P6SMB20AHE3/52
- Part No.:
- P6SMB20AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20AHE3/52.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,996
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Product details
Overview
P6SMB20AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 20 V standoff voltage (VWM), 21.0 V maximum breakdown voltage (VBR at 1 mA), 27.7 V clamping voltage (VC) at 21.7 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 P6SMB20AHE3/52 datasheet, P6SMB20AHE3/52 pinout, P6SMB20AHE3/52 application, or P6SMB20AHE3/52 equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, fast response time, and MSL Level 1 moisture sensitivity - critical for high-reliability board-level ESD and surge protection design.
Technical Context
The P6SMB20AHE3/52 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (19.0–21.0 V), with cathode-band polarity marking. Its junction is glass passivated for stable performance under repetitive surge stress and thermal cycling.
It delivers 27.7 V clamping at 21.7 A (10/1000 µs), with 1.0 µA max reverse leakage at 17.1 V, and a temperature coefficient of VBR at +0.090 %/°C - enabling predictable overvoltage protection across -65 °C to +150 °C operating range without derating below 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 17.1 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC bias margin. |
| VBR (Breakdown) | 19.0–21.0 V at 1 mA - Confirmed avalanche initiation range; ensures consistent turn-on across production lots. |
| VC (Clamping) | 27.7 V at 21.7 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case transient; limits stress on downstream components. |
| PPPM | 600 W - Sustains 10/1000 µs surges up to 21.7 A without failure; suitable for IEC 61000-4-5 Level 3/4 surge immunity. |
| IPPM | 21.7 A - Peak pulse current capability under standard waveform; determines minimum trace width and PCB copper pad sizing. |
| TJ max | +150 °C - Enables operation in under-hood automotive or enclosed industrial enclosures without forced cooling. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs thermal layout requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts avalanche current to ground when transient exceeds VWM. |
| Anode (unbanded end) | Reference/ground terminal | Typically tied to system ground or low-impedance return path; completes clamping loop during surge event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - supports under-hood and ADAS applications. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges (e.g., 2 Ω source impedance, 40 A) without degradation over rated lifetime. |
| Glass passivated junction | Ensures stable VBR and low leakage (<1 µA) after humidity exposure and thermal stress - critical for long-term field reliability. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; eliminates moisture-related popcorning risk. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during fast transients - protects 24 V logic interfaces and 3.3 V/5 V microcontrollers. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V power rails in body control modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and LDO input to clamp transients before regulation stage. Use Value: Clamps to 27.7 V within nanoseconds, preventing LDO overvoltage shutdown and preserving system uptime during alternator switching events. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt transient energy before reaching precision ADC front-end. Use Value: Limits induced voltage to ≤27.7 V while maintaining <1 µA leakage at 17.1 V - avoids sensor offset drift and measurement error. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
|
Use Scenario: Safeguarding PoE-powered network switches against lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converter, sized for 600 W single-event handling. Use Value: Absorbs 10/1000 µs surges up to 21.7 A without parametric shift - maintains PoE compliance and prevents brownout resets. |
Use Scenario: Adding secondary-level surge protection to USB-C power delivery circuits in portable monitors and docking stations. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line to suppress contact ESD (IEC 61000-4-2 ±15 kV) and hot-swap transients. Use Value: Responds in <1 ns with 27.7 V clamping - prevents damage to USB PD controllers and preserves enumeration integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A-E3/52 | Same VWM (17.1 V), but lower PPPM (400 W); SMA package (DO-214AC), slightly larger footprint. | Limited to lower-energy transients (e.g., IEC 61000-4-2 only); not rated for IEC 61000-4-5 Level 4. | Select when cost or legacy layout constraints favor SMA, and surge threat level is moderate. |
| 1.5SMC20A | Same electrical specs, but SMC (DO-214AB) package - 2.5 mm wider, higher RθJA (85 °C/W), no AEC-Q101 option. | Requires larger PCB area; lacks automotive qualification; suitable for commercial-only designs. | Choose for non-automotive applications where higher thermal mass is acceptable and AEC-Q101 is unnecessary. |
Compared with SMAJ20A-E3/52 and 1.5SMC20A, the P6SMB20AHE3/52 uniquely combines AEC-Q101 qualification, 600 W surge rating, and SMB footprint - making it optimal for space-constrained automotive and industrial systems requiring validated reliability and high-energy clamping.
Availability
P6SMB20AHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom power supplies, and consumer USB-C PD systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB20AHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets board-level transient protection in automotive, industrial, and telecom systems - engineered for high surge robustness, AEC-Q101 compliance, and compatibility with automated SMT assembly.
FAQ
What is the clamping voltage of P6SMB20AHE3/52 at its rated peak pulse current?
The P6SMB20AHE3/52 has a maximum clamping voltage (VC) of 27.7 V at 21.7 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB20AHE3/52 maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C) without derating below 25 °C.
Is P6SMB20AHE3/52 suitable for automotive applications?
Yes, P6SMB20AHE3/52 is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It meets rigorous stress tests including temperature cycling, high-temperature reverse bias (HTRB), and surge endurance - making it appropriate for under-hood modules, ADAS sensors, and body electronics. The P6SMB20AHE3/52 also complies with MSL Level 1 and RoHS requirements for modern automotive manufacturing.
How does the SMB package of P6SMB20AHE3/52 compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of P6SMB20AHE3/52 offers a 3.94 mm × 2.20 mm footprint - smaller than SMC (DO-214AB) and identical in length but narrower than SMA (DO-214AC). This enables higher board density while maintaining 600 W surge capability. Unlike SMAJ20A-E3/52 (SMA) or 1.5SMC20A (SMC), the P6SMB20AHE3/52 achieves this in a low-profile, MSL Level 1-compliant form factor optimized for fine-pitch automated placement.
What is the maximum reverse leakage current for P6SMB20AHE3/52 at its stand-off voltage?
The P6SMB20AHE3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage of 17.1 V and 25 °C ambient temperature. This low leakage ensures minimal power loss in always-on circuits and avoids interference with high-impedance sensor inputs or precision reference nodes. The P6SMB20AHE3/52 maintains leakage below 10 µA up to +125 °C per datasheet characterization.
Does P6SMB20AHE3/52 require a heatsink for standard operation?
No, P6SMB20AHE3/52 is designed for operation without external heatsinking when mounted on standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per JEDEC layout guidelines. Its RθJA of 100 °C/W and 5.0 W steady-state power dissipation rating allow reliable performance in natural convection environments. The P6SMB20AHE3/52's thermal design assumes no additional thermal relief - adding heatsinks provides marginal benefit unless ambient exceeds 85 °C.
P6SMB20AHE3/52 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)
P6SMB20AHE3/52 FAQ
1.How can I place an order for P6SMB20AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20AHE3/52 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 P6SMB20AHE3/52 reliable?
The price and inventory of P6SMB20AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20AHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB20AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20AHE3/52?
P6SMB20AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20AHE3/52 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 P6SMB20AHE3/52?
For technical support, including P6SMB20AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20AHE3/52 requirements.
6.How does Aetrix verify that P6SMB20AHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB20AHE3/52 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 P6SMB20AHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB20AHE3/52?
All P6SMB20AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20AHE3/52, 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 P6SMB20AHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB20AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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