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Vishay General Semiconductor - Diodes Division P6KE47CA/54
- Part No.:
- P6KE47CA/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE47CA/54.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,320
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Product details
Overview
P6KE47CA from Littelfuse is a bidirectional transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power lines, telecom interfaces, and industrial control inputs. It features a 47 V nominal breakdown voltage (VBR = 42.3–51.7 V), 600 W peak pulse power (10/1000 µs), clamping voltage of 67.8 V at 8.8 A, and fast response time <5.0 ns - enabling robust ESD and lightning surge suppression in 48 V systems.
For engineers reviewing the P6KE47CA datasheet, P6KE47CA pinout, P6KE47CA application, or P6KE47CA equivalent, key selection criteria include its bidirectional DO-204AC (Axial) package, UL 497B listing for telecom protection, low clamping ratio (VC/VWM ≈ 1.78), and compatibility with IEC 61000-4-2/4-5 level 4 surge requirements in space-constrained designs.
Technical Context
The P6KE47CA operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical clamping in both polarities. Its breakdown occurs at 42.3–51.7 V (tested at 1 mA), with maximum stand-off voltage VWM = 38.1 V and leakage current <5 µA at that voltage.
Under 10/1000 µs surge conditions, it limits transient voltage to ≤67.8 V at 8.8 A peak pulse current (IPPM), while maintaining thermal stability across –55°C to +175°C junction temperature range and supporting 265°C soldering per MIL-STD-750.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 42.3–51.7 V at 1 mA - defines minimum voltage at which avalanche conduction begins in either direction |
| Stand-off Voltage VWM | 38.1 V - maximum continuous reverse operating voltage before significant leakage |
| Clamping Voltage VC | 67.8 V at 8.8 A (10/1000 µs) - actual voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power | 600 W - energy-handling capacity for short-duration transients without failure |
| Leakage Current ID | <5 µA at VWM - ensures minimal power loss and signal integrity in standby |
| Response Time | <5.0 ns - enables suppression before downstream ICs experience damaging overvoltage |
| Operating Temperature | –55°C to +175°C - supports deployment in automotive under-hood, industrial PLC, and outdoor telecom enclosures |
Pinout & Package
Package: DO-204AC (Axial leaded, JEDEC-standard molded plastic body). Cathode band is absent on bidirectional types like P6KE47CA; polarity is non-directional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically - no polarity sensitivity; connects across protected line and return |
| Lead 1 / Lead 2 | Mounting interface | Axial leads accept through-hole soldering; 0.375" (9.5 mm) length rated for 265°C/10 s high-temp soldering |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| UL 497B certification | Validated for telecom line protection (file E136766), reducing compliance validation effort for PSTN, xDSL, and VoIP equipment |
| 600 W peak pulse rating | Withstands IEC 61000-4-5 combination wave surges up to 4 kV (2 Ω source) without degradation |
| Low clamping ratio (VC/VWM) | 1.78 - minimizes voltage overshoot margin required for protected ICs' absolute maximum ratings |
| DO-204AC axial package | Enables manual or automated through-hole assembly; compatible with legacy PCB footprints used for 1N400x and similar rectifiers |
Applications
| Industrial PLC I/O Protection | Telecom Line Interface |
|---|---|
Use Scenario: 24–48 V DC input modules exposed to induced surges from relay switching and nearby motor drives. IC Role / Device Role / Timing Role: Primary shunt protector placed directly at connector entry point before filtering and regulation stages. Use Value: Clamps transients to ≤67.8 V within 5 ns, preventing latch-up or gate oxide damage in upstream op-amps and microcontrollers. |
Use Scenario: Analog telephone line (tip/ring) interface in VoIP gateways subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Bidirectional line-to-line and line-to-ground clamp compliant with GR-1089-CORE and ITU-T K.20. Use Value: Symmetrical clamping ensures equal protection regardless of surge polarity; UL 497B listing satisfies telecom safety certification requirements. |
| Automotive Body Control Module | DC Power Rail Surge Suppression |
Use Scenario: 12/24 V supply inputs in BCMs facing load dump (ISO 7637-2 Pulse 5a) and ISO 16750-2 jump-start transients. IC Role / Device Role / Timing Role: Secondary overvoltage clamp after LC filter, protecting linear regulators and CAN transceivers. Use Value: Withstands 600 W pulses without parametric shift; –55°C to +175°C rating matches under-hood thermal envelope. |
Use Scenario: 48 V server rack power distribution units (PDUs) requiring immunity to hot-swap and backplane arcing events. IC Role / Device Role / Timing Role: Parallel-connected TVS across main DC bus to limit voltage excursions during fault clearing. Use Value: 67.8 V clamping ensures downstream 60 V-rated MOSFETs and capacitors remain within safe operating area during 100 A surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45CA | DO-214AA (SMB) surface-mount package; same VWM (36.5 V) and VC (70.1 V), but lower 600 W rating derated above 75°C | Requires re-layout for SMT assembly; better suited for high-density boards where axial leads are impractical | Select when board space is constrained and automated SMT placement is preferred over through-hole |
| 1.5KE47CA | Same DO-204AC package and electrical specs, but rated for 1500 W peak pulse power (10/1000 µs); larger physical size (0.230" diameter vs. 0.140") | Offers higher surge margin for critical infrastructure; requires larger PCB pad clearance and mechanical mounting allowance | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 and 600 W is insufficient |
Compared with SMBJ45CA and 1.5KE47CA, the P6KE47CA delivers optimal balance of proven telecom-grade reliability, axial through-hole manufacturability, and cost-effective 600 W surge handling - making it ideal for mid-tier industrial and telecom designs where footprint, certification, and production scalability are jointly prioritized.
Availability
P6KE47CA is available at Aetrix Electronics and suitable for industrial PLC I/O protection, telecom line interface, and automotive body control module applications requiring stable component supply and long-term lifecycle support.
Supply support for P6KE47CA 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
Littelfuse is a global leader in circuit protection, specializing in fuses, TVS diodes, and surge suppression solutions for automotive, industrial, and telecom markets.
The P6KE series was engineered for cost-sensitive, high-volume applications demanding reliable transient suppression in compact axial packages - particularly where UL 497B compliance and JEDEC-standard assembly are mandatory.
FAQ
What is the clamping voltage of P6KE47CA at its rated peak pulse current?
The P6KE47CA clamps to a maximum of 67.8 V when subjected to an 8.8 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper bound voltage imposed on protected circuitry during standardized surge events - critical for verifying downstream ICs remain within their absolute maximum voltage ratings. The P6KE47CA achieves this performance while maintaining low incremental surge resistance and sub-5 ns response.
Is P6KE47CA suitable for telecom line protection per industry standards?
Yes, the P6KE47CA is UL listed to UL 497B (file E136766) for telecom application protection, covering both unidirectional and bidirectional devices. It meets requirements for primary protection on analog telephone lines, xDSL ports, and VoIP interfaces per GR-1089-CORE and ITU-T K.20. Its bidirectional symmetry, 38.1 V stand-off voltage, and 67.8 V clamping ensure compliance without external polarity management - a key advantage of the P6KE47CA in telecom front-end designs.
How does the P6KE47CA differ from unidirectional P6KE47A?
The P6KE47CA is bidirectional, providing symmetrical clamping for AC-coupled or floating lines, whereas the P6KE47A is unidirectional and requires correct polarity orientation. The P6KE47CA has identical VBR (42.3–51.7 V), VWM (38.1 V), and VC (67.8 V) ratings but lacks a cathode band marking. Its bidirectional behavior makes the P6KE47CA suitable for tip/ring telecom lines or differential bus protection where polarity reversal is possible - unlike the P6KE47A, which would fail open if reverse-biased beyond VWM.
What is the maximum steady-state power dissipation for P6KE47CA at elevated temperatures?
The P6KE47CA has a steady-state power dissipation (PM(AV)) of 5.0 W at TL = 75°C with 0.375" (9.5 mm) lead length, derating linearly to zero at 175°C per Figure 5 in the datasheet. This rating assumes mounting on a 1.6" × 1.6" copper pad (40 × 40 mm); actual board layout significantly impacts thermal performance. For continuous operation, designers must verify junction temperature stays below 175°C using the P6KE47CA's thermal resistance and ambient conditions - especially in sealed enclosures.
Can P6KE47CA be used in automotive applications meeting ISO 7637-2 requirements?
Yes, the P6KE47CA is qualified for automotive environments with a junction temperature range of –55°C to +175°C and is routinely deployed in body control modules for 12/24 V supply rail protection. While not AEC-Q200 certified as a standalone component, its robust glass-passivated junction, 600 W surge capability, and high-temperature soldering tolerance (265°C/10 s) align with ISO 7637-2 Pulse 1, 2a, 3a/b, and 5a immunity requirements when applied per recommended layout guidelines. System-level validation remains essential for full ISO compliance, but the P6KE47CA provides foundational protection.
P6KE47CA/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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-204AC (DO-15)
P6KE47CA/54 FAQ
1.How can I place an order for P6KE47CA/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE47CA/54 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 P6KE47CA/54 reliable?
The price and inventory of P6KE47CA/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE47CA/54 is usually 5 days.
3.What payment methods are accepted for P6KE47CA/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE47CA/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE47CA/54?
P6KE47CA/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE47CA/54 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 P6KE47CA/54?
For technical support, including P6KE47CA/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE47CA/54 requirements.
6.How does Aetrix verify that P6KE47CA/54 is sourced from the original manufacturer or authorized distributors?
All P6KE47CA/54 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 P6KE47CA/54 meets industry standards.
7.What is the process for return or replacement of P6KE47CA/54?
All P6KE47CA/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE47CA/54, 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 P6KE47CA/54 part is unused and in its original packaging.
Return procedure for P6KE47CA/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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