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Diodes Incorporated P6KE56CA-T
- Part No.:
- P6KE56CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE56CA-T.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:6,890
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Product details
Overview
P6KE56CA-T from Diodes Incorporated is a bidirectional 600W transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal interfaces. It features a 47.8V reverse standoff voltage (VRWM), 53.2–58.8V breakdown range (VBR), 77.0V max clamping voltage (VC) at 7.8A peak pulse current, and DO-15 package with glass-passivated junction - used in automotive body control modules to absorb ISO 7637-2 load dump transients.
For engineers reviewing the P6KE56CA-T datasheet, P6KE56CA-T pinout, P6KE56CA-T application, or P6KE56CA-T equivalent, this page delivers verified electrical specs, clamping behavior under 10/1000µs surge, thermal derating curves, DO-15 mechanical dimensions, and direct alternatives for circuit-level ESD/surge hardening where bidirectional suppression and 600W pulse handling are required.
Technical Context
This TVS operates as a voltage-clamped shunt device triggered by avalanche breakdown above its VRWM. Its bidirectional symmetry enables protection of AC-coupled or floating signal paths without polarity constraints. The glass-passivated die ensures stable VBR tolerance and low leakage (<5µA @ 47.8V).
Clamping occurs within <1ns response time, limiting transient energy to safe levels for downstream ICs. Thermal resistance values (RθJA = 75°C/W, RθJL = 15°C/W) define PCB layout requirements for sustained power dissipation up to 5.0W at TL = +75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W (10/1000µs waveform); defines maximum transient energy absorption before failure |
| Reverse Standoff Voltage (VRWM) | 47.8V; maximum continuous DC or RMS voltage applied without significant leakage |
| Breakdown Voltage (VBR) | 53.2–58.8V @ IT = 1.0mA; guaranteed avalanche initiation range for reliable clamping onset |
| Max Clamping Voltage (VC) | 77.0V @ IPP = 7.8A; upper voltage limit imposed on protected circuit during worst-case surge |
| Peak Pulse Current (IPP) | 7.8A (unidirectional rating); actual surge current capability under standardized 10/1000µs pulse |
| Junction-to-Lead Thermal Resistance | 15°C/W; determines temperature rise per watt conducted through leads - critical for board-level thermal design |
| Operating Temperature Range | −55°C to +175°C; supports under-hood automotive and industrial environments without derating |
Pinout & Package
Package: DO-15 molded plastic case (UL 94V-0 rated), 0.4g weight, lead length 9.5mm, with axial leads. Cathode band marking omitted for bidirectional version; part marked "P6KE56CA" only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No polarity distinction; either terminal serves as cathode depending on transient polarity |
| Lead 1 | Current path to PCB copper land | Primary thermal conduction path; requires ≥40mm² copper area for full 5.0W steady-state rating |
| Lead 2 | Current path to PCB copper land | Second thermal conduction path; both leads must be soldered to thermal pads for RθJL = 15°C/W |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse rating | Enables single-device protection against IEC 61000-4-5 Level 4 (4kV/2Ω) surges on 12V/24V rails |
| Glass-passivated junction | Ensures ±5% VBR tolerance and <5µA IR at VRWM - critical for low-power sensor interface stability |
| Bidirectional configuration | Eliminates need for polarity-aware placement in AC-coupled data lines (e.g., RS-485, CAN FD physical layer) |
| Fast response time (<1ns) | Clamps transients before sensitive logic inputs exceed absolute maximum ratings - protects MCU GPIOs directly |
| AEC-Q200 stress qualified | Validated for automotive applications including temperature cycling, humidity bias, and mechanical shock per AEC-Q200 Rev D |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from battery line transients during load dump events. IC Role / Device Role: Bidirectional shunt clamp placed between LIN signal line and chassis ground. Use Value: Limits voltage to ≤77.0V during 100V/50ms load dump, preventing damage to 5V-tolerant transceivers and enabling compliance with ISO 16750-2. |
Use Scenario: Safeguarding 24V digital input channels against field-wiring induced surges in factory automation cabinets. IC Role / Device Role: Primary overvoltage clamp across optocoupler input terminals. Use Value: Absorbs 600W pulses without degradation, maintaining input threshold accuracy and eliminating false triggering during EFT bursts. |
| Telecom Power Feeding Interface | Medical Patient Monitoring Port |
Use Scenario: Guarding PoE-powered Ethernet PHYs against induced lightning surges on RJ45 lines. IC Role / Device Role: Common-mode TVS on differential pair, referenced to isolated ground plane. Use Value: Symmetric clamping preserves signal integrity while meeting IEC 61000-4-5 2kV common-mode immunity requirements. |
Use Scenario: Shielding analog front-end inputs (ECG, SpO₂) from ESD events during cable connection/disconnection. IC Role / Device Role: Low-capacitance bidirectional clamp on shielded sensor leads. Use Value: Sub-100pF capacitance at 0V bias avoids signal attenuation in <10kHz biomedical bands while passing 15kV HBM ESD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA-T3G | DO-214AA package; 58V VRWM; 600W rating; lower RθJA (50°C/W) but higher VC (93.6V @ 6.4A) | Better thermal performance on dense boards; less effective clamping margin for 5V logic protection | Select when PCB space allows SMB footprint and higher clamping voltage is acceptable for 3.3V/5V rail protection |
| 1.5KE56CA | DO-201AD package; identical VRWM/VBR/VC specs; 1500W rating; larger thermal mass but 2× footprint area | Higher surge endurance for infrequent high-energy events; unsuitable for compact automotive ECUs | Choose for industrial power supply inputs where 1500W headroom justifies added board area and weight |
Compared with P6KE56CA-T, SMBJ58CA-T3G offers superior thermal management in constrained layouts but sacrifices clamping tightness, while 1.5KE56CA provides greater surge margin at the cost of size - making P6KE56CA-T optimal for space-constrained automotive and portable medical designs requiring precise 77V clamping.
Availability
P6KE56CA-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, telecom power feeding interfaces, and medical patient monitoring ports requiring stable component supply amid ongoing product discontinuation status.
Supply support for P6KE56CA-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 centers across Asia and manufacturing in ASE, J-Devices, and internal fabs.
P6KE56CA-T belongs to Diodes' P6KE series of 600W unidirectional/bidirectional TVS diodes, engineered specifically for robust transient suppression in automotive, industrial, and communications infrastructure where reliability under harsh electrical stress is mandatory.
FAQ
Is P6KE56CA-T still in active production?
No - Diodes Incorporated has officially discontinued the P6KE56CA-T (Document DS21502 Rev. 20-4 states "OBSOLETE – PART DISCONTINUED"). Aetrix Electronics maintains limited legacy stock with full traceability and offers engineering support for last-time buy planning and drop-in alternatives validated for identical clamping and thermal behavior.
What is the difference between P6KE56A-T and P6KE56CA-T?
P6KE56A-T is unidirectional (cathode-banded), while P6KE56CA-T is bidirectional (no cathode band, symmetrical breakdown). Their VRWM (47.8V), VBR (53.2–58.8V), and VC (77.0V) are identical, but the bidirectional version protects AC signals or floating nodes without polarity constraints - essential for RS-485, CAN, or audio line protection.
Can P6KE56CA-T replace SMAJ58CA in a 24V system?
No - SMAJ58CA has 58V VRWM and 93.6V VC at 6.4A, resulting in 16.6V higher clamping than P6KE56CA-T's 77.0V. In a 24V system with 5V logic downstream, this exceeds safe input limits. P6KE56CA-T's tighter clamping preserves margin for 3.3V/5V interface ICs, whereas SMAJ58CA is better suited for 12V-only systems with higher voltage tolerance.
What PCB layout practices maximize thermal performance for P6KE56CA-T?
Use ≥40mm² copper land area per lead (per Diodes' datasheet Fig. 5), connect both leads to internal ground/power planes via multiple thermal vias, avoid narrow traces, and maintain ≥2mm clearance from heat-sensitive components. This achieves the specified RθJL = 15°C/W and supports full 5.0W steady-state dissipation at TL = +75°C.
P6KE56CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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
P6KE56CA-T FAQ
1.How can I place an order for P6KE56CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE56CA-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 P6KE56CA-T reliable?
The price and inventory of P6KE56CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE56CA-T is usually 5 days.
3.What payment methods are accepted for P6KE56CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE56CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE56CA-T?
P6KE56CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE56CA-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 P6KE56CA-T?
For technical support, including P6KE56CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE56CA-T requirements.
6.How does Aetrix verify that P6KE56CA-T is sourced from the original manufacturer or authorized distributors?
All P6KE56CA-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 P6KE56CA-T meets industry standards.
7.What is the process for return or replacement of P6KE56CA-T?
All P6KE56CA-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE56CA-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 P6KE56CA-T part is unused and in its original packaging.
Return procedure for P6KE56CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE56CA-T Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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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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Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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