My Inquiry
My Account
onsemi P6SMB75CAT3G
- Part No.:
- P6SMB75CAT3G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB75CAT3G.pdf
- Description:
- TVS DIODE 64.1VWM 103VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:4,950
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB75CAT3G from ON Semiconductor is a bidirectional 600 W transient voltage suppressor (TVS) diode designed for parallel overvoltage protection of DC power rails and signal lines. It features a 64.1 V working peak reverse voltage (VRWM), 75.05 V nominal Zener breakdown voltage (VBR) at 1 mA, clamps to ≤103 V at 5.8 A peak pulse current, and responds in <1 ns - used in automotive power supply input stages, industrial PLC I/O protection, and telecom interface surge hardening.
For engineers reviewing the P6SMB75CAT3G datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ system operating voltage, VC ≤ protected IC's absolute maximum rating, low leakage (<5 µA @ VRWM), UL 497B recognition for isolated loop circuits, and SMB (DO-214AA) surface-mount compatibility with standard PCB footprints.
Technical Context
This device operates as a bidirectional avalanche diode, conducting symmetrically in both polarities once reverse voltage exceeds VBR. Its clamping action relies on controlled avalanche breakdown rather than forward conduction, enabling fast response without polarity sensitivity.
Thermal design requires attention to junction-to-lead resistance (RJL = 40 °C/W) and derating above 75°C - with 3.0 W DC power dissipation at TL = 75°C and full 600 W peak power only valid for non-repetitive 1 ms pulses per Figure 2 waveform.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W @ 1 ms, non-repetitive - supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge testing when properly laid out. |
| Working Peak Reverse Voltage (VRWM) | 64.1 V - must be ≥ continuous DC bus voltage (e.g., 48 V telecom systems or 60 V automotive loads). |
| Zener Breakdown Voltage (VBR) | 75.05 V @ 1 mA - defines turn-on threshold; min/max spread (71.4–78.8 V) sets worst-case clamping window. |
| Clamping Voltage (VC) | ≤103 V @ IPP = 5.8 A - ensures protected ICs with 100 V abs max rating remain within safe margin. |
| Junction Capacitance (Cj) | 140 pF @ 0 V, 1 MHz - limits use in >10 Mbps high-speed data lines but acceptable for RS-485, CAN, or power monitoring. |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling immunity during assembly and field service. |
| UL Recognition | UL 497B QVGQ2 File #E210057 - certified for isolated loop circuit protection, not just flammability compliance. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount plastic case with modified L-bend leads; dimensions per Case 403A-03 (L = 0.76–1.60 mm, D = 3.30–3.95 mm, E = 4.06–4.60 mm); Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode Band End | Anode (for negative transients) | Bidirectional operation: this terminal conducts when voltage at opposite end drops ≤ −75.05 V relative to it. |
| Opposite End | Cathode (for positive transients) | Conducts when voltage at cathode band end rises ≥ +75.05 V relative to it - no polarity marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating DC lines without external polarity management. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overshoot margin needed between protected IC's max rating and system operating voltage. |
| Sub-1 ns response time | Reduces risk of damage from fast-rising ESD or lightning-induced transients before protection engages. |
| UL 497B certification | Validates suitability for safety-critical isolated loop applications (e.g., 4–20 mA sensor interfaces) per regulatory test suite. |
| Surmetic™ package reliability | Void-free molded thermoset plastic ensures long-term moisture resistance and solder joint integrity in harsh environments. |
Applications
| Automotive Power Input Protection | Industrial PLC Analog I/O Protection |
|---|---|
|
Use Scenario: 12 V/24 V vehicle battery line exposed to load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role: Primary parallel TVS clamp placed directly at connector entry point before DC-DC converter input. Use Value: Clamps 103 V peak at 5.8 A, staying below 120 V rail-rated converters while surviving 600 W transient energy. |
Use Scenario: 4–20 mA current loop inputs in programmable logic controllers subjected to field wiring ESD and inductive kickback. IC Role / Device Role: Bidirectional overvoltage limiter across loop terminals, referenced to isolated ground. Use Value: UL 497B certification confirms compliance for isolated loop protection; 140 pF capacitance avoids signal distortion at 1 kHz bandwidth. |
| Telecom DC Power Feeds | Medical Equipment Power Rails |
|
Use Scenario: −48 V DC power distribution in central office equipment facing lightning-induced common-mode surges. IC Role / Device Role: Bidirectional clamp between −48 V rail and chassis ground, with series impedance limiting peak current. Use Value: 64.1 V VRWM matches −48 V system with 25% margin; 600 W rating handles multi-kA surge events per ITU-T K.20/21. |
Use Scenario: Auxiliary 5 V/12 V internal power rails in diagnostic imaging devices requiring low-leakage, certified protection. IC Role / Device Role: Secondary overvoltage guard after primary fuse and MOV, ensuring fail-safe shutdown under fault. Use Value: <5 µA leakage at 64.1 V prevents loading sensitive analog front-ends; UL 497B supports regulatory submission for Class II medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Same SMB package, identical VRWM (64.1 V) and VBR (75 V), but rated for 600 W @ 10/1000 µs waveform (vs. 1 ms for P6SMB75CAT3G). | Optimized for shorter-duration transients (IEC 61000-4-5); slightly lower clamping voltage (100 V @ 6.0 A) improves margin for 100 V-rated ICs. | Select SMBJ75CA when surge testing follows 10/1000 µs standard; verify layout thermal relief matches SMBJ's higher peak current density. |
| 1.5SMC75CA | Larger SMC (DO-214AB) package, same electrical specs but higher thermal mass (RJA = 180 °C/W vs. 226 °C/W), rated for 1500 W peak power. | Preferred for high-reliability industrial systems where board space allows larger footprint and higher surge repetition is expected. | Choose 1.5SMC75CA when ambient temperature exceeds 75°C or duty cycle requires >600 W average surge handling; confirm PCB pad area meets SMC thermal requirements. |
Compared with SMBJ75CA and 1.5SMC75CA, the P6SMB75CAT3G offers optimal balance of compact SMB footprint, UL 497B certification for loop isolation, and proven 1 ms surge capability - making it ideal for cost-sensitive, space-constrained designs requiring regulatory-compliant protection without overspec'ing thermal capacity.
Availability
P6SMB75CAT3G is available at Aetrix Electronics and suitable for automotive power input protection, industrial PLC analog I/O protection, and telecom DC power feeds requiring stable component supply across production lifecycles.
Supply support for P6SMB75CAT3G 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 is a global semiconductor manufacturer specializing in power management, analog, sensors, and discrete devices for automotive, industrial, and communications markets.
The P6SMB75CAT3G belongs to the P6SMBxxCAT3 series of 600 W bidirectional TVS diodes engineered specifically for UL 497B-certified isolated loop protection and high-energy transient suppression in harsh environments.
FAQ
What is the clamping voltage of the P6SMB75CAT3G at its rated peak pulse current?
The P6SMB75CAT3G clamps to a maximum of 103 V at its specified peak pulse current (IPP) of 5.8 A, measured using the 1 ms exponential waveform defined in Figure 2 of the datasheet. This value is guaranteed across temperature and represents the upper limit of voltage seen by downstream components during a surge event - critical for ensuring compatibility with ICs rated for ≤100 V absolute maximum input.
Is the P6SMB75CAT3G unidirectional or bidirectional, and how does that affect circuit placement?
The P6SMB75CAT3G is a bidirectional TVS diode, meaning it clamps symmetrically for both positive- and negative-polarity transients without requiring polarity-specific orientation. This allows direct placement across any two nodes - such as power-to-ground or differential signal pairs - without concern for anode/cathode alignment, simplifying layout and reducing BOM count versus unidirectional alternatives.
Does the P6SMB75CAT3G meet UL 497B, and what does that certification cover?
Yes, the P6SMB75CAT3G carries UL 497B recognition under File #E210057 in the "Protectors" category (QVGQ2). This certification validates performance in strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing - confirming suitability for protecting isolated loops like 4–20 mA sensor interfaces, not merely package flammability compliance.
What is the maximum DC power dissipation for the P6SMB75CAT3G at 75°C lead temperature?
The P6SMB75CAT3G has a DC power dissipation rating of 3.0 W at a lead temperature (TL) of 75°C, with linear derating of 40 mW/°C above that temperature. This reflects its thermal design for SMB package mounting on FR-4 boards with 1″² copper pads - exceeding typical ambient-temperature-based ratings and enabling reliable operation in hot engine bay or industrial enclosure environments.
How does the junction capacitance of the P6SMB75CAT3G impact high-speed signal lines?
The P6SMB75CAT3G exhibits 140 pF junction capacitance at 0 V bias and 1 MHz, which makes it unsuitable for USB 2.0, HDMI, or >100 Mbps Ethernet signal paths due to signal integrity degradation. However, it remains appropriate for lower-bandwidth interfaces like RS-485, CAN FD (up to 5 Mbps), or analog sensor outputs where capacitance-induced rise-time slowing is acceptable.
P6SMB75CAT3G 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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 140pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
P6SMB75CAT3G FAQ
1.How can I place an order for P6SMB75CAT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB75CAT3G 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 P6SMB75CAT3G reliable?
The price and inventory of P6SMB75CAT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB75CAT3G is usually 5 days.
3.What payment methods are accepted for P6SMB75CAT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB75CAT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB75CAT3G?
P6SMB75CAT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB75CAT3G 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 P6SMB75CAT3G?
For technical support, including P6SMB75CAT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB75CAT3G requirements.
6.How does Aetrix verify that P6SMB75CAT3G is sourced from the original manufacturer or authorized distributors?
All P6SMB75CAT3G 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 P6SMB75CAT3G meets industry standards.
7.What is the process for return or replacement of P6SMB75CAT3G?
All P6SMB75CAT3G units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB75CAT3G, 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 P6SMB75CAT3G part is unused and in its original packaging.
Return procedure for P6SMB75CAT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB75CAT3G Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
