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Vishay General Semiconductor - Diodes Division P6SMB20AHE3_B/H
- Part No.:
- P6SMB20AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20AHE3_B/H.pdf
- Description:
- 600W,20V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,800
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Product details
Overview
P6SMB20AHE3_B/H 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 (IPPM), designed to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power rails.
For engineers reviewing the P6SMB20AHE3_B/H datasheet, P6SMB20AHE3_B/H pinout, P6SMB20AHE3_B/H application, or P6SMB20AHE3_B/H equivalent, this AEC-Q101 qualified TVS offers verified 600 W peak pulse power (10/1000 μs), low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive ECUs and industrial motor drives requiring robust overvoltage immunity.
Technical Context
This unidirectional TVS operates with a cathode-band-marked polarity, exhibits 0.090 %/°C temperature coefficient of VBR, and delivers sub-nanosecond response to transient events. Its glass-passivated junction ensures stable leakage (<1.0 μA at 17.1 V) and repeatable clamping performance across -65 °C to +150 °C operating range.
The device is optimized for automated SMT placement on 0.2" × 0.2" copper pads, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W. It meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements for PCB-mounted surge protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 17.1 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 19.0–21.0 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 27.7 V at 21.7 A IPPM - Peak voltage seen by protected circuit under 600 W 10/1000 μs surge; limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability per single transient event; validated per Fig. 1 derating curve. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - Minimal standby current draw; preserves low-power system integrity. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line ground or low-side reference. | Provides return path during clamping; must be routed with low-inductance trace to minimize voltage overshoot. |
| Cathode | Current exit terminal in forward bias; connected to protected IC/MOSFET input or supply rail. | Acts as clamping node - voltage at this terminal rises to VC during surge, diverting current away from sensitive circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without derating in standard PCB layouts. |
| AEC-Q101 qualification (HE3 suffix) | Confirms suitability for automotive powertrain and body electronics where field failure risk must be minimized. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without popcorn cracking or delamination. |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage margin required between protected IC's absolute maximum rating and TVS clamping level. |
Applications
| Automotive Engine Control Unit (ECU) Power Input | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12 V battery-supplied microcontroller power rail from load-dump transients up to 35 V and alternator ripple spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND, clamping surges before they reach LDO regulator input. Use Value: Limits peak rail voltage to 27.7 V, preventing damage to 30 V-rated input capacitors and enabling use of cost-optimized 35 V input LDOs. |
Use Scenario: Shields 24 V digital input channel from inductive kickback when solenoid valves switch off. IC Role / Device Role / Timing Role: Connected across input optocoupler terminals to shunt >100 V transients within <1 ns. Use Value: Maintains signal integrity by clamping faster than optocoupler propagation delay, avoiding false triggering or latch-up. |
| Consumer Appliance Motor Drive Board | Telecom Base Station Sensor Interface |
Use Scenario: Safeguards gate driver IC supply pins against back-EMF from brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: Mounted directly at gate driver VDD pin to suppress 40 V+ spikes induced by motor commutation. Use Value: Prevents gate oxide breakdown in 20 V-rated drivers by limiting transient excursion to ≤27.7 V with <100 ps response. |
Use Scenario: Guards RS-485 transceiver data lines against lightning-induced surges on outdoor sensor cables. IC Role / Device Role / Timing Role: Paired with common-mode choke as first-stage protection before TVS array on differential pair. Use Value: Provides 600 W per line without degrading signal rise time due to low junction capacitance (<100 pF at 0 V). |
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), identical SMB package, but lower PPPM (400 W) and higher VC (32.4 V at 12.3 A). | Not AEC-Q101 qualified; suitable for commercial-grade consumer products only. | Select when cost sensitivity outweighs automotive qualification and higher clamping voltage is acceptable. |
| 1.5SMC20A | Higher package thermal mass (SMC/DO-214AB), same VWM/VC specs, but RθJA = 65 °C/W vs. 100 °C/W - better power dissipation. | Requires larger PCB footprint (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm); not compatible with dense automotive layouts. | Choose when sustained surge repetition rate exceeds P6SMB20AHE3_B/H capability and board space permits larger package. |
Compared with SMAJ20A-E3/52 and 1.5SMC20A, P6SMB20AHE3_B/H uniquely balances AEC-Q101 compliance, compact SMB footprint, and 600 W surge handling - making it optimal for space-constrained automotive modules where qualification and clamping precision are non-negotiable.
Availability
P6SMB20AHE3_B/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC input stages, and telecom sensor interfaces requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P6SMB20AHE3_B/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-efficiency power solutions.
The P6SMB Series targets automotive and industrial transient suppression, delivering AEC-Q101 qualified, high-power TVS diodes in compact SMB packages for robust overvoltage protection in harsh environments.
FAQ
What is the clamping voltage of P6SMB20AHE3_B/H at its rated peak pulse current?
The P6SMB20AHE3_B/H has a maximum clamping voltage (VC) of 27.7 V at 21.7 A peak pulse current (IPPM), measured under standardized 10/1000 μs waveform conditions. This value defines the upper voltage limit imposed on protected circuitry during a 600 W transient event and is confirmed in the Electrical Characteristics table on page 2 of the Vishay datasheet 88370. The P6SMB20AHE3_B/H maintains this clamping performance across its full operating temperature range.
Is P6SMB20AHE3_B/H qualified for automotive applications?
Yes, P6SMB20AHE3_B/H is AEC-Q101 qualified, as indicated by the "HE3" and "_B" suffixes in its ordering code. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per AEC-Q101 Rev D. The P6SMB20AHE3_B/H is explicitly designated for automotive use in the Vishay ordering information table (page 3) and mechanical data section, supporting deployment in engine control, body electronics, and ADAS subsystems.
What does the "_B/H" suffix mean in P6SMB20AHE3_B/H?
The "_B" denotes AEC-Q101 qualification for the P6SMB20AHE3_B/H series (applicable to P6SMB6.8A through P6SMB220A), while "/H" specifies packaging in 7-inch diameter plastic tape and reel with 750 units per reel. This suffix combination confirms both automotive-grade reliability and standard SMT-compatible delivery format. The P6SMB20AHE3_B/H is RoHS-compliant and meets JESD201 Class 2 whisker resistance requirements.
How does P6SMB20AHE3_B/H compare to bidirectional variants like P6SMB20CA?
P6SMB20AHE3_B/H is unidirectional, with cathode marked by a band and intended for DC rail protection where polarity is fixed; P6SMB20CA is bidirectional and used in AC or floating-signal applications like RS-485. The P6SMB20AHE3_B/H has VWM = 17.1 V and VBR = 19.0–21.0 V, whereas P6SMB20CA has symmetric VWM = 17.1 V in both directions but identical clamping (27.7 V). Pinout and package are identical, but polarity marking and test methodology differ.
What is the maximum printed circuit board pad size recommended for P6SMB20AHE3_B/H?
Vishay specifies a minimum mounting pad layout of 0.2" × 0.2" (5.0 mm × 5.0 mm) copper area per terminal for P6SMB20AHE3_B/H, as noted in the "Maximum Ratings" footnote (2) and illustrated in the package outline drawing. This pad size ensures adequate heat dissipation to achieve the rated 600 W peak pulse power and maintain RθJA = 100 °C/W. Deviating below this dimension reduces surge capability and risks thermal runaway during repetitive transients.
P6SMB20AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- Telecom
- 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_B/H FAQ
1.How can I place an order for P6SMB20AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20AHE3_B/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 P6SMB20AHE3_B/H reliable?
The price and inventory of P6SMB20AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20AHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB20AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20AHE3_B/H?
P6SMB20AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20AHE3_B/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 P6SMB20AHE3_B/H?
For technical support, including P6SMB20AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20AHE3_B/H requirements.
6.How does Aetrix verify that P6SMB20AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB20AHE3_B/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 P6SMB20AHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB20AHE3_B/H?
All P6SMB20AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20AHE3_B/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 P6SMB20AHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB20AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB20AHE3_B/H Tags
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