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onsemi P6SMB16CAT3
- Part No.:
- P6SMB16CAT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB16CAT3.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:2,295
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Product details
Overview
P6SMB16CAT3 from ON Semiconductor is a bidirectional 600 W transient voltage suppressor (TVS) diode designed for parallel overvoltage protection of sensitive electronics. It features a 13.6 V working peak reverse voltage (VRWM), 16 V nominal Zener breakdown voltage (VBR), and clamps transients to 22.5 V at 27 A peak pulse current (IPP), making it suitable for automotive power line surge suppression and industrial I/O port protection.
For engineers reviewing the P6SMB16CAT3 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to system operating voltage, 1 ms 600 W surge capability, UL 497B recognition for isolated loop circuits, and SMB (DO-214AA) surface-mount compatibility with standard PCB footprints.
Technical Context
The P6SMB16CAT3 operates as a bidirectional avalanche diode, conducting in both directions when transient voltage exceeds its symmetric breakdown threshold. Its low zener impedance and sub-1 ns response time enable fast clamping without significant overshoot when properly laid out.
It is rated for 600 W non-repetitive peak pulse power per 10/1000 µs waveform, with thermal derating above 75°C junction temperature. The device meets Class 3 ESD immunity (>16 kV HBM) and is UL 497B recognized for isolated loop circuit protection-critical for telecom and industrial interface applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W @ 1 ms, 10/1000 µs waveform - supports high-energy surge events like ISO 7637-2 Pulse 5a in automotive systems |
| Working Peak Reverse Voltage (VRWM) | 13.6 V - must be ≥ continuous DC bus voltage to avoid leakage conduction during normal operation |
| Zener Breakdown Voltage (VBR) | 15.2–16.8 V @ 1 mA test current - defines symmetric conduction threshold in both polarities |
| Clamping Voltage (VC) | 22.5 V @ 27 A IPP - maximum voltage seen by protected circuit during full-rated surge |
| Leakage Current (IR) | < 5 µA @ 13.6 V - ensures negligible standby power loss in battery-powered or high-impedance circuits |
| Junction Capacitance (Cj) | 610 pF @ 0 V - impacts high-frequency signal integrity; suitable for DC/low-speed lines, not RF interfaces |
| ESD Rating | Class 3 (>16 kV HBM) - exceeds IEC 61000-4-2 Level 4 for robust handling and board-level ESD immunity |
Pinout & Package
Package: SMB (DO-214AA), surface-mount plastic case with modified L-bend leads; dimensions per Case 403A-03 (L = 4.06–4.60 mm, W = 2.159–2.743 mm, H = 1.90–2.45 mm); Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode Band End | Anode (for negative transients) | Bidirectional symmetry means either end serves as anode or cathode depending on polarity of surge |
| Opposite End | Cathode (for positive transients) | No polarity marking required; device functions identically regardless of orientation on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating DC lines without polarity concerns |
| UL 497B recognition | Validated for isolated loop circuit protection - simplifies safety certification in telecom and medical equipment |
| 600 W surge rating | Withstands automotive load dump and industrial lightning-induced surges per IEC 61000-4-5 |
| <1 ns response time | Minimizes voltage overshoot before clamping engages - critical for protecting fast-switching ICs |
| Low leakage <5 µA | Prevents signal distortion or bias shift in high-impedance sensor or reference circuits |
Applications
| Automotive Power Line Protection | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Parallel-connected TVS diode absorbing >100 V, 100 ms surges before downstream regulators or microcontrollers. Use Value: Clamps peak voltage to 22.5 V while dissipating 600 W, preventing latch-up or permanent damage to 3.3 V/5 V logic. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Bidirectional transient clamp placed at connector entry point, upstream of optocoupler isolation. Use Value: Symmetric 16 V breakdown allows protection of both positive and negative transients without polarity matching. |
| Medical Equipment Isolated Interfaces | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding isolated RS-485 or CAN bus transceivers connected to external patient-monitoring sensors. IC Role / Device Role / Timing Role: UL 497B-recognized TVS on secondary side of isolation barrier, meeting IEC 60601-1 creepage/clearance requirements. Use Value: Certified protection enables compliance with medical safety standards without adding discrete isolation components. |
Use Scenario: Front-end surge protection for Ethernet or T1/E1 line cards exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Primary clamping device on differential pair, paired with gas discharge tube (GDT) for staged protection. Use Value: 610 pF capacitance avoids signal degradation on ≤10 Mbps lines while providing 22.5 V clamping ceiling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA | Same SMB package, identical VRWM (13.6 V) and VC (22.5 V), but rated for 600 W with tighter VBR tolerance (15.2–16.8 V vs. P6SMB16CAT3's 15.2–16.8 V - no practical difference) | Functionally interchangeable; SMBJ series has broader manufacturer support and longer production history | Select SMBJ16CA if long-term supply continuity and multi-source availability are prioritized |
| 1.5SMC16CA | Larger SMC (DO-214AB) package; same electrical specs but higher thermal mass (RJA = 19°C/W vs. 226°C/W for P6SMB16CAT3) and 1500 W rating - over-spec for most SMB footprints | Requires PCB redesign due to larger 7.11 × 6.22 mm footprint; used where sustained surge duty cycle demands lower thermal resistance | Choose 1.5SMC16CA only when thermal derating at elevated ambient temperatures is critical and layout change is acceptable |
Compared with SMBJ16CA and 1.5SMC16CA, the P6SMB16CAT3 offers optimal balance of compact SMB footprint, UL 497B certification, and proven automotive qualification - making it preferred for space-constrained, safety-certified designs where direct drop-in replacement is required.
Availability
P6SMB16CAT3 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and medical device interfaces requiring stable component supply across extended product lifecycles.
Supply support for P6SMB16CAT3 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
ON Semiconductor (now onsemi) is a global semiconductor supplier specializing in power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud power applications.
The P6SMB16CAT3 belongs to the P6SMBxxCAT3 series of bidirectional TVS diodes engineered specifically for cost-sensitive, high-reliability surge protection in automotive and industrial environments - emphasizing UL recognition, surge robustness, and surface-mount manufacturability.
FAQ
What is the clamping voltage of the P6SMB16CAT3 under maximum surge conditions?
The P6SMB16CAT3 clamps to 22.5 V at its rated peak pulse current of 27 A, measured using the standard 10/1000 µs waveform. This value is guaranteed across temperature and represents the maximum voltage imposed on protected circuitry during a full 600 W surge event - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the P6SMB16CAT3 unidirectional or bidirectional, and how does that affect PCB layout?
The P6SMB16CAT3 is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients without polarity sensitivity. Its SMB package has no cathode band marking, and either end may connect to either side of the protected line - eliminating orientation constraints and simplifying automated placement on PCBs.
Does the P6SMB16CAT3 meet UL 497B, and why does that matter for my design?
Yes, the P6SMB16CAT3 carries UL 497B recognition (File #E210057) for protectors in isolated loop circuits. This certification validates performance in dielectric withstand, endurance conditioning, and strike voltage tests - enabling faster regulatory approval for telecom, medical, and industrial equipment without additional system-level surge testing.
What is the maximum operating temperature range for the P6SMB16CAT3?
The P6SMB16CAT3 operates reliably from −65°C to +150°C, with thermal derating applied above 75°C junction temperature. Its 226°C/W junction-to-ambient thermal resistance requires careful PCB copper area design - especially in enclosed enclosures or high-ambient environments - to maintain safe junction temperatures during repeated surge events.
Can the P6SMB16CAT3 replace older P6SMB16A parts in existing designs?
Yes, the P6SMB16CAT3 is a direct replacement for legacy P6SMB16A variants, maintaining identical electrical specifications, SMB package dimensions, and soldering profile (260°C for 10 seconds). The "T3" suffix denotes 13-inch tape-and-reel packaging, and "G" confirms Pb-free compliance - both compatible with standard SMT assembly processes.
P6SMB16CAT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 27A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 610pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
P6SMB16CAT3 FAQ
1.How can I place an order for P6SMB16CAT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB16CAT3 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 P6SMB16CAT3 reliable?
The price and inventory of P6SMB16CAT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB16CAT3 is usually 5 days.
3.What payment methods are accepted for P6SMB16CAT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB16CAT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB16CAT3?
P6SMB16CAT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB16CAT3 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 P6SMB16CAT3?
For technical support, including P6SMB16CAT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB16CAT3 requirements.
6.How does Aetrix verify that P6SMB16CAT3 is sourced from the original manufacturer or authorized distributors?
All P6SMB16CAT3 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 P6SMB16CAT3 meets industry standards.
7.What is the process for return or replacement of P6SMB16CAT3?
All P6SMB16CAT3 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB16CAT3, 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 P6SMB16CAT3 part is unused and in its original packaging.
Return procedure for P6SMB16CAT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB16CAT3 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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