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Diodes Incorporated P6KE12A-T
- Part No.:
- P6KE12A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE12A-T.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:5,053
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Product details
Overview
P6KE12A-T from Diodes Incorporated is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 12V reverse standoff voltage (VRWM), 11.4V minimum breakdown voltage (VBR), 16.7V maximum clamping voltage (VC) at 36A peak pulse current, and DO-15 glass-passivated package-used in industrial power supplies, automotive body control modules, and telecom interface protection.
For engineers reviewing the P6KE12A-T datasheet, P6KE12A-T pinout, P6KE12A-T application, or P6KE12A-T equivalent, key selection criteria include clamping performance under 8/20μs surge, thermal derating above +25°C ambient, unidirectional polarity marking (cathode band), and compatibility with lead-free reflow profiles per J-STD-020 Level 1.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VRWM (10.2–12.6V), avalanches sharply at VBR ≥11.4V, and limits transient energy to ≤16.7V at IPP = 36A. Its 600W peak pulse rating applies to non-repetitive 1.0ms waveform per IEC 61000-4-5.
Thermal design relies on RθJA = 75°C/W and PD = 5.0W at TL = +75°C with 9.5mm lead length on 40mm² copper land. The DO-15 package enables axial through-hole mounting with UL 94V-0 flammability compliance and 0.4g mass.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 1.0ms 8/20μs surge without failure |
| Reverse Standoff Voltage | 12V - maximum continuous DC operating voltage before leakage exceeds 5μA |
| Breakdown Voltage | 11.4V min - guaranteed avalanche initiation threshold at 1mA test current |
| Clamping Voltage | 16.7V max - limits line voltage during 36A transient, defining protected circuit margin |
| Peak Pulse Current | 36A - maximum non-repetitive surge current supported at rated clamping voltage |
| Package | DO-15 - axial-leaded, glass-passivated plastic case with cathode band marking |
| Thermal Resistance | RθJA = 75°C/W - defines junction-to-ambient temperature rise under steady-state 5W dissipation |
Pinout & Package
DO-15 package: axial-leaded, molded plastic body (UL 94V-0), 0.4g weight, 25.4mm overall length, 5.5–7.62mm body diameter, 0.686–0.889mm lead diameter, 2.6–3.6mm lead spacing. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lower-potential rail; conducts during reverse transient |
| Cathode | High-side transient input | Connected to protected line; marked with band; blocks normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4kV/2Ω) on 12V rails |
| Glass Passivated Die | Improves moisture resistance and long-term reliability in humid industrial environments |
| Fast Response Time | <1.0ps intrinsic response ensures clamping before sensitive downstream ICs experience overstress |
| RoHS Compliant / Lead-Free | Meets EU Directive 2011/65/EU with full exemption documentation; compatible with Pb-free reflow |
| Unidirectional Polarity | Prevents unintended conduction on negative transients; requires correct cathode orientation in PCB layout |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 12V DC input rail of programmable logic controller (PLC) power supply exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Shunt clamping device placed between VIN and GND, triggered within picoseconds of overvoltage event. Use Value: Limits rail excursion to ≤16.7V during 36A surge, preventing damage to 16V-rated DC-DC controllers and microcontrollers. |
Use Scenario: LIN bus line in door module subjected to ISO 7637-2 Pulse 1 (−100V/50Ω) and Pulse 2a (+100V/2Ω). IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN signal and chassis ground, absorbing negative transients only. Use Value: Clamps negative spikes to −1.0V (forward VF) while maintaining 12V system integrity; avoids bidirectional capacitance penalty on data line. |
| Telecom Interface Protection | Consumer Appliance Motor Drive |
Use Scenario: RS-485 transceiver VCC rail in outdoor security camera housing subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of LDO regulator, sized to handle 1.0ms surges per IEC 61000-4-5. Use Value: Dissipates 600W peak energy without degradation, preserving 3.3V/5V logic supply stability during field surges. |
Use Scenario: 12V auxiliary supply feeding H-bridge gate drivers in washing machine motor control board. IC Role / Device Role / Timing Role: Rail protector against back-EMF from brushed DC motor commutation and relay coil de-energization. Use Value: Withstands 100A IFSM (8.3ms half-sine) and repeated 36A transients, extending board lifetime in high-vibration environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A-T | Same VRWM (12V), lower PPK (600W → 600W), but SMB package (surface-mount); VC = 19.9V @ 30.1A | Requires PCB redesign for SMT placement; higher clamping voltage reduces protected margin | Select when board space constraints prohibit axial DO-15 or automated assembly mandates SMT |
| P6KE12CA-T | Bidirectional variant; identical VRWM/VBR/VC specs but symmetrical clamping for AC or dual-polarity lines | Used where both positive and negative transients occur (e.g., antenna ports, AC-coupled signals) | Choose only if bidirectional protection is required; adds ~10pF capacitance vs. unidirectional P6KE12A-T |
Compared with SMBJ12A-T, P6KE12A-T offers lower clamping (16.7V vs. 19.9V) and proven axial-mount mechanical robustness; versus P6KE12CA-T, it delivers tighter capacitance control and eliminates unnecessary bidirectional conduction in DC-only rails.
Availability
P6KE12A-T is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, and telecom interface protection requiring stable component supply despite its obsolete status-inventory is actively managed with last-time-buy coordination and cross-reference support.
Supply support for P6KE12A-T 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The P6KE series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for cost-sensitive, high-reliability overvoltage protection in automotive, industrial, and consumer power systems using standardized axial packages.
FAQ
Is P6KE12A-T still in active production?
No-P6KE12A-T is officially obsolete per Diodes' DS21502 Rev. 20-4 (August 2024). Aetrix Electronics maintains limited legacy stock and supports last-time-buy orders with full traceability, but no new wafer fabrication or packaging is scheduled.
What is the meaning of the "A" suffix in P6KE12A-T?
The "A" denotes unidirectional polarity. P6KE12A-T clamps only positive transients relative to cathode; the "C" variant (P6KE12CA-T) is bidirectional. This suffix is defined in Diodes' ordering nomenclature and confirmed in Table 1 of DS21502.
Can P6KE12A-T be used in place of P6KE12CA-T?
No-substitution requires circuit review. P6KE12A-T provides unidirectional clamping (cathode to line), while P6KE12CA-T clamps both polarities. Using P6KE12A-T on an AC or bidirectional signal risks failure during negative excursions beyond its forward voltage rating.
What is the maximum allowable soldering temperature for P6KE12A-T?
Per Diodes' packaging specification and J-STD-020 Level 1 moisture sensitivity, P6KE12A-T supports standard lead-free reflow with peak temperature ≤260°C for ≤10 seconds. Hand soldering must not exceed 350°C for more than 3 seconds per lead to avoid die stress or bond wire damage.
P6KE12A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 36A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
P6KE12A-T FAQ
1.How can I place an order for P6KE12A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE12A-T 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 P6KE12A-T reliable?
The price and inventory of P6KE12A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE12A-T is usually 5 days.
3.What payment methods are accepted for P6KE12A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE12A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE12A-T?
P6KE12A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE12A-T 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 P6KE12A-T?
For technical support, including P6KE12A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE12A-T requirements.
6.How does Aetrix verify that P6KE12A-T is sourced from the original manufacturer or authorized distributors?
All P6KE12A-T 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 P6KE12A-T meets industry standards.
7.What is the process for return or replacement of P6KE12A-T?
All P6KE12A-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE12A-T, 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 P6KE12A-T part is unused and in its original packaging.
Return procedure for P6KE12A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE12A-T Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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