My Inquiry
My Account
onsemi P6KE9.1AG
- Part No.:
- P6KE9.1AG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE9.1AG.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,973
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6KE9.1AG from ON Semiconductor is a unidirectional 600 W transient voltage suppressor (TVS) diode in axial-leaded Surmetic−40 package, designed for parallel clamping protection of DC power rails and signal lines. It features a 7.78 V working peak reverse voltage (VRWM), 9.1 V nominal breakdown voltage (VBR) at 1 mA test current, 13.4 V maximum clamping voltage (VC) at 45 A peak pulse current (IPP), and sub-1 ns response time - deployed in industrial power supplies and medical equipment input stages.
For engineers reviewing the P6KE9.1AG datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin over operating voltage, VC vs. protected IC's absolute maximum rating, surge current handling under IEC 61000-4-5 waveforms, Pb-free compliance status, and UL 497B recognition for isolated loop circuit protection.
Technical Context
The P6KE9.1AG operates as a silicon avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its specified VBR of 8.65–9.55 V. Its clamping action limits transient energy to ≤13.4 V at 45 A IPP under 1 ms 10/1000 µs waveform, with thermal resistance of 20 °C/W from junction-to-lead.
It exhibits low leakage (<50 µA @ 7.78 V), 0.068 %/°C temperature coefficient of VBR, and ESD robustness >16 kV per Human Body Model. The device is rated for −55 °C to +175 °C operating temperature and supports lead-free soldering at 230 °C for 10 seconds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 7.78 V - maximum continuous reverse voltage before significant leakage; must exceed system DC rail voltage by ≥10%. |
| VBR @ IT = 1 mA | 8.65–9.55 V - guaranteed avalanche initiation range; defines minimum overvoltage threshold for protection activation. |
| VC @ IPP = 45 A | 13.4 V - maximum clamped voltage during 1 ms transient; must stay below protected IC's absolute max rating. |
| IPP | 45 A - peak pulse current capability under standard 10/1000 µs waveform; determines survivability against IEC 61000-4-5 Level 4 surges. |
| Leakage @ VRWM | <50 µA - ensures minimal power loss and signal integrity degradation in standby or low-power modes. |
| Response Time | <1 ns - enables suppression before sensitive circuitry experiences damaging overvoltage overshoot. |
| UL Recognition | UL 497B QVGV2 - certified for isolated loop circuit protection, validating reliability in telecom and industrial interfaces. |
Pinout & Package
Surmetic−40 axial-leaded plastic package (Case 017AA), cathode indicated by band; leads are tin-plated copper, solderable at 230 °C for 10 s at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop during transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., +12 V rail); conducts avalanche current when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy transients (e.g., lightning-induced surges) without failure under single-event stress. |
| UL 497B certification | Validates suitability for safety-critical isolated loop protection in telecom and process control systems. |
| Pb-free (RoHS-compliant) | Meets global environmental regulations; compatible with lead-free reflow and wave soldering processes. |
| ESD rating >16 kV HBM | Provides robust electrostatic discharge immunity during handling and board-level integration. |
| −55 °C to +175 °C operation | Supports deployment in harsh environments including industrial motor drives and under-hood automotive modules. |
Applications
| Industrial Power Supply Input Protection | Medical Equipment ESD Interface Guarding |
|---|---|
Use Scenario: Protects AC/DC adapter primary-side rectifier output and secondary-side 12 V/24 V distribution rails from load dump and coupling transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed in parallel with bulk capacitor to clamp voltage spikes before reaching downstream regulators and controllers. Use Value: Limits clamped voltage to 13.4 V, ensuring safe operation of 16 V-rated DC-DC converters and microcontrollers on same rail. |
Use Scenario: Shields USB, RS-232, and analog sensor inputs on diagnostic imaging devices from operator ESD events and cable discharge. IC Role / Device Role / Timing Role: Front-end transient suppressor mounted directly at connector entry point to divert >16 kV HBM discharges away from precision ADCs and isolation amplifiers. Use Value: Sub-1 ns response prevents overshoot propagation into low-noise front-end circuits, preserving signal fidelity during clinical measurements. |
| Process Control Signal Line Protection | Communication System DC Bias Rail Clamping |
Use Scenario: Safeguards 4–20 mA current loop transmitters and PLC analog input modules against field wiring faults and induced surges. IC Role / Device Role / Timing Role: Connected across loop supply terminals to absorb energy from inductive kickback and lightning-induced common-mode transients. Use Value: 7.78 V VRWM matches typical 24 V loop supply with margin; 45 A IPP withstands 10/1000 µs surges up to 1.2 kV open-circuit. |
Use Scenario: Clamps bias voltage on RF front-end LNAs and Ethernet PHY magnetics in base station radios and PoE switches. IC Role / Device Role / Timing Role: Mounted at DC feed-through point of transformer center-tap to prevent overvoltage damage during surge events on data lines. Use Value: UL 497B recognition confirms compliance for isolated interface protection, critical for telecom safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Surface-mount SMB package; 9.0 V VBR, 14.5 V VC @ 38.8 A IPP; lower peak power (600 W same, but smaller thermal mass). | Requires PCB redesign for SMT placement; better suited for space-constrained consumer electronics vs. industrial axial layouts. | Select SMBJ9.0A only when board real estate is limited and thermal management via copper pour is feasible. |
| 1.5KE9.1A | Same axial package but higher 1.5 kW peak power; 9.1 V VBR, 13.4 V VC @ 112 A IPP; larger case (DO-201AD vs. DO-15). | Over-spec'd for 600 W requirements; used where multi-pulse endurance or higher surge margin is mandated (e.g., utility metering). | Choose 1.5KE9.1A if system-level testing requires >2× surge margin beyond IEC 61000-4-5 Level 4. |
Compared with SMBJ9.0A and 1.5KE9.1A, the P6KE9.1AG delivers optimal balance of axial-leaded serviceability, UL 497B certification, and precise 600 W surge handling - making it preferred for field-serviceable industrial power supplies and medical devices requiring regulatory traceability.
Availability
P6KE9.1AG is available at Aetrix Electronics and suitable for industrial power supplies, medical equipment interfaces, process control signal conditioning, and communication system bias rail protection requiring stable component supply across extended product lifecycles.
Supply support for P6KE9.1AG 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 energy-efficient power management, analog, sensors, and connectivity solutions for industrial, automotive, and cloud infrastructure markets.
The P6KE9.1AG belongs to the P6KE6.8A Series of unidirectional transient voltage suppressors engineered for cost-effective, high-reliability overvoltage protection in harsh-environment power and signal interfaces.
FAQ
What is the maximum clamping voltage of the P6KE9.1AG under surge conditions?
The P6KE9.1AG has a maximum clamping voltage (VC) of 13.4 V when subjected to its rated peak pulse current of 45 A under a 1 ms 10/1000 µs waveform. This value is measured per Figure 4 in the official datasheet and ensures protected circuits remain within safe voltage limits during transient events. The P6KE9.1AG maintains this clamping performance across its full operating temperature range.
Is the P6KE9.1AG RoHS compliant and lead-free?
Yes, the "G" suffix in P6KE9.1AG explicitly denotes a Pb-free (RoHS-compliant) version packaged in the Surmetic−40 axial leaded case. It meets JEDEC J-STD-020 moisture sensitivity level 1 and supports lead-free soldering at 230 °C for 10 seconds at 1/16″ from the case body. The P6KE9.1AG is fully qualified for modern environmentally regulated manufacturing flows.
Does the P6KE9.1AG have UL recognition for safety-critical applications?
Yes, the P6KE9.1AG carries UL 497B recognition (File #E116110, category QVGV2) for isolated loop circuit protection. This certification covers dielectric withstand, endurance conditioning, and strike voltage breakdown testing - confirming its suitability for telecom interfaces, industrial fieldbus systems, and medical equipment where regulatory compliance is mandatory. The P6KE9.1AG shares this recognition with the full P6KE6.8A–P6KE200A series.
What is the working peak reverse voltage (VRWM) specification for the P6KE9.1AG?
The P6KE9.1AG has a working peak reverse voltage (VRWM) of 7.78 V, meaning it remains in high-impedance blocking mode up to this DC or continuous peak voltage level. This parameter ensures minimal leakage (<50 µA) during normal operation while providing sufficient margin above common 5 V or 12 V rails. The P6KE9.1AG's VRWM is validated per Note 3 in the datasheet and applies at TA = 25 °C.
How does the P6KE9.1AG compare to bidirectional TVS diodes like P6KE9.1CA?
The P6KE9.1AG is unidirectional and intended for DC-biased lines where polarity is fixed (e.g., +12 V supply rails), offering tighter VBR tolerance and lower leakage than its bidirectional counterpart P6KE9.1CA. The P6KE9.1CA supports AC or floating signals but exhibits higher capacitance and symmetric clamping in both directions. Select P6KE9.1AG when protecting polarized circuits with defined ground reference - the P6KE9.1AG delivers superior DC performance and UL 497B coverage for such use cases.
P6KE9.1AG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- T-18, Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 45A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
P6KE9.1AG FAQ
1.How can I place an order for P6KE9.1AG through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE9.1AG 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 P6KE9.1AG reliable?
The price and inventory of P6KE9.1AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE9.1AG is usually 5 days.
3.What payment methods are accepted for P6KE9.1AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE9.1AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE9.1AG?
P6KE9.1AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE9.1AG 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 P6KE9.1AG?
For technical support, including P6KE9.1AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE9.1AG requirements.
6.How does Aetrix verify that P6KE9.1AG is sourced from the original manufacturer or authorized distributors?
All P6KE9.1AG 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 P6KE9.1AG meets industry standards.
7.What is the process for return or replacement of P6KE9.1AG?
All P6KE9.1AG units undergo pre-shipment inspection (PSI). If there is an issue with P6KE9.1AG, 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 P6KE9.1AG part is unused and in its original packaging.
Return procedure for P6KE9.1AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE9.1AG 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…
