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Vishay General Semiconductor - Diodes Division P6SMB20AHM3_B/H
- Part No.:
- P6SMB20AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20AHM3_B/H.pdf
- Description:
- 600W,20V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,763
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Product details
Overview
P6SMB20AHM3_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 electronics.
For engineers reviewing the P6SMB20AHM3_B/H datasheet, P6SMB20AHM3_B/H pinout, P6SMB20AHM3_B/H application, or P6SMB20AHM3_B/H equivalent, this AEC-Q101 qualified, halogen-free, RoHS-compliant TVS offers verified 600 W peak pulse power (10/1000 μs), low incremental surge resistance, and MSL Level 1 reflow compatibility up to 260 °C - critical for high-reliability board-level surge protection design.
Technical Context
The P6SMB20AHM3_B/H operates as a unidirectional avalanche-clamping device with glass-passivated junction, delivering fast response time (<1 ns) and stable clamping under repetitive 10/1000 μs surge waveforms at 0.01% duty cycle. Its thermal resistance (RθJA = 100 °C/W) and junction temperature range (–65 °C to +150 °C) support operation on standard PCB copper pads without heatsinking in space-constrained layouts.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. The cathode band marking enables unambiguous polarity identification during automated placement and post-solder inspection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 17.1 V - Maximum continuous reverse voltage before conduction; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 19.0–21.0 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during transient events. |
| VC (Clamping Voltage) | 27.7 V at IPPM = 21.7 A - Peak voltage seen by protected circuit during 600 W surge; determines downstream component voltage stress. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 μs waveform) - Sustains high-energy transients without failure; validated per Fig. 1 derating curves. |
| IR (Reverse Leakage) | 1.0 μA max at VWM - Negligible standby current; avoids power loss or false triggering in low-power sensor interfaces. |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments and industrial motor drive enclosures. |
| Package | SMB (DO-214AA) - Low-profile (2.20 mm height), JEDEC-standard footprint compatible with high-speed pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout recommended per datasheet Fig. 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit 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 reverse bias; connected to line being protected (e.g., 24 V rail or sensor input). | Marked with band; defines polarity-sensitive placement - reversal causes permanent short-circuit failure under surge. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces per stress test requirements. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets IEC 61249-2-21 and JEDEC J-STD-203; supports green manufacturing and end-of-life compliance. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/85% RH; withstands peak reflow of 260 °C without popcorn or delamination. |
| 600 W peak pulse power | Handles ISO 7637-2 Pulse 1/2a/5a surges and IEC 61000-4-5 Level 4 (4 kV) without degradation. |
| Glass passivated junction | Ensures stable leakage and breakdown characteristics over 10+ years in harsh thermal/humidity environments. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12 V/24 V CAN/LIN bus interface circuits from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and ground, clamping spikes before they reach transceiver ICs. Use Value: Limits voltage to ≤27.7 V during 600 W surges, preventing latch-up or gate oxide damage in automotive-grade transceivers. |
Use Scenario: Shields 24 V digital input channels of programmable logic controllers from inductive kickback of solenoid valves. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at connector entry point to shunt energy before reaching optocoupler input stage. Use Value: Clamps transients within <1 ns, maintaining signal integrity and enabling reliable edge detection in real-time control loops. |
| Automotive Camera Sensor Interface | Consumer Appliance Motor Driver Protection |
Use Scenario: Safeguards MIPI CSI-2 data lines and power rails in rear-view camera modules exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100 pF at 0 V) placed adjacent to image sensor IC to suppress fast-rising ESD pulses. Use Value: Maintains signal fidelity up to 1.5 Gbps while limiting voltage excursion to 27.7 V, avoiding pixel corruption or reset faults. |
Use Scenario: Guards half-bridge gate drivers in washing machine motor inverters against shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: Unidirectional TVS across high-side MOSFET drain-source to clamp inductive energy during PWM dead-time transitions. Use Value: Absorbs 600 W surge energy without thermal runaway, extending MOSFET lifetime and eliminating need for snubber RC networks. |
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), VC = 32.4 V at 19.3 A; lower PPPM (400 W); SMA package (larger footprint, higher RθJA). | Less robust clamping performance; suitable only for non-automotive, lower-energy transients. | Select when cost sensitivity outweighs AEC-Q101 requirement and surge energy is <400 W. |
| 1.5SMC20AHE3_A/H | Same VWM/VC specs; 1.5 kW PPPM rating; larger SMC (DO-214AB) package; AEC-Q101 qualified. | Higher surge margin but requires 30% more PCB area; better for infrequent, high-amplitude events (e.g., lightning-induced surges). | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits SMC footprint. |
Compared with SMAJ20A-E3/5B, P6SMB20AHM3_B/H delivers tighter clamping (27.7 V vs. 32.4 V) and automotive qualification in a smaller SMB package; versus 1.5SMC20AHE3_A/H, it trades peak power headroom for compactness and lower thermal resistance - ideal for dense, AEC-Q101–mandated layouts.
Availability
P6SMB20AHM3_B/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and consumer appliance motor control systems requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for P6SMB20AHM3_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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, efficiency, and automotive-grade validation.
The P6SMB Series targets high-volume, space-constrained surge protection in automotive, industrial, and computing applications - engineered for consistent clamping, low leakage, and seamless integration into automated SMT assembly lines.
FAQ
What is the maximum clamping voltage of the P6SMB20AHM3_B/H under a 600 W transient?
The P6SMB20AHM3_B/H clamps to 27.7 V at its rated peak pulse current of 21.7 A, corresponding to a 600 W surge with a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and represents the maximum voltage imposed on the protected circuit during standardized surge testing. It remains stable across temperature due to the device's low temperature coefficient of VBR (0.090 %/°C). The P6SMB20AHM3_B/H maintains this clamping performance over its full operating junction temperature range (–65 °C to +150 °C).
Is P6SMB20AHM3_B/H suitable for automotive applications?
Yes, P6SMB20AHM3_B/H is AEC-Q101 qualified, as confirmed by the "HM3_B" suffix and documentation in Vishay's ordering information table (page 3, Document 88370). It undergoes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life per AEC-Q101 Rev D. The device is explicitly listed for use in automotive body control modules, sensor units, and infotainment power supplies. Its halogen-free, RoHS-compliant construction and MSL Level 1 rating further support automotive manufacturing requirements.
What does the "HM3_B/H" suffix mean in P6SMB20AHM3_B/H?
The "HM3" denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance; "B" indicates AEC-Q101 qualification for the P6SMB6.8A–P6SMB220A voltage range; "H" specifies 7" plastic tape-and-reel packaging (750 units per reel). This full suffix confirms P6SMB20AHM3_B/H meets automotive reliability, environmental, and logistics requirements - distinct from commercial-grade "E3" or non-qualified "A" variants. The P6SMB20AHM3_B/H is not interchangeable with P6SMB20A or P6SMB20AE3 without verifying qualification status.
How does P6SMB20AHM3_B/H compare to bidirectional TVS diodes like P6SMB20CA?
P6SMB20AHM3_B/H is unidirectional and intended for DC rail protection where polarity is fixed (e.g., 24 V supply to ground), offering lower leakage (<1.0 μA) and tighter VBR tolerance than its bidirectional counterpart P6SMB20CA. The latter supports AC or floating-line protection but exhibits higher ID (≤5.0 μA) and dual-direction clamping. P6SMB20AHM3_B/H cannot replace P6SMB20CA in AC-coupled signal paths. For DC power rails, P6SMB20AHM3_B/H provides superior leakage control and is preferred in battery-sensitive or low-quiescent-current designs.
What PCB layout guidance applies to P6SMB20AHM3_B/H?
Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated thermal and surge performance. Trace inductance must be minimized: anode and cathode traces should be short, wide, and direct to ground/power planes. Avoid vias in series with TVS terminals. The P6SMB20AHM3_B/H cathode band must align with silkscreen polarity marking. Thermal relief is discouraged - solid copper connections ensure optimal heat dissipation and clamping consistency during repetitive surges.
P6SMB20AHM3_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)
P6SMB20AHM3_B/H FAQ
1.How can I place an order for P6SMB20AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20AHM3_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 P6SMB20AHM3_B/H reliable?
The price and inventory of P6SMB20AHM3_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 P6SMB20AHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB20AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20AHM3_B/H?
P6SMB20AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20AHM3_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 P6SMB20AHM3_B/H?
For technical support, including P6SMB20AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB20AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB20AHM3_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 P6SMB20AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB20AHM3_B/H?
All P6SMB20AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20AHM3_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 P6SMB20AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB20AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB20AHM3_B/H Tags
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