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Taiwan Semiconductor Corporation P6KE56AH
- Part No.:
- P6KE56AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE56AH.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,603
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Product details
Overview
P6KE56AH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in power supplies and automotive electronics. It features a nominal breakdown voltage of 56 V, clamps transients to ≤77.0 V at 8.1 A peak surge current, and delivers <1 μA reverse leakage above 47.8 V standoff voltage - enabling robust ESD and lightning surge immunity in 12 V/24 V systems.
For engineers reviewing the P6KE56AH datasheet, P6KE56AH pinout, P6KE56AH application, or P6KE56AH equivalent, key selection criteria include its AEC-Q101 qualification, DO-15 package compatibility with high-reliability board layouts, 10/1000 μs surge rating, and precise clamping performance under automotive load-dump and ISO 7637-2 pulse conditions.
Technical Context
The P6KE56AH implements a silicon avalanche junction optimized for fast transient response (<1.0 ps rise time from 0 V to VBR) and low dynamic impedance. Its unidirectional configuration provides asymmetric conduction: forward-biased operation supports surge current handling up to 100 A (8.3 ms half-sine), while reverse-biased clamping activates at 53.2–58.8 V breakdown range.
Thermal design is enabled by a 175 °C maximum junction temperature and derating curves supporting sustained operation up to 75 °C ambient. The device meets UL 94V-0 flammability requirements and JESD201 Class 2 whisker resistance, confirming suitability for automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W at 10/1000 μs waveform - sustains single-event surges typical of ISO 7637-2 Pulse 5a (load dump) |
| Breakdown Voltage VBR | 53.2–58.8 V at 1 mA test current - ensures reliable triggering before downstream IC damage thresholds |
| Standoff Voltage VWM | 47.8 V - blocks normal 42 V automotive system transients without leakage |
| Clamping Voltage VC | ≤77.0 V at 8.1 A IPP - limits protected circuit stress below 80 V during worst-case surge |
| Reverse Leakage IR | <1 μA at 47.8 V - avoids standby power loss in always-on vehicle modules |
| Junction Temperature | −55 to +175 °C - supports engine compartment mounting without thermal derating penalties |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking. Leads are pure tin-plated per J-STD-002 for lead-free soldering compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connects to ground or low-side return; conducts 100 A surge current during forward-biased overload |
| Cathode | Reverse-biased clamping node | Connects to protected line (e.g., battery rail); avalanches at 53.2–58.8 V to clamp transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and mechanical shock per JESD47 |
| Fast response time | <1.0 ps from 0 V to VBR - reacts before most microsecond-scale transients propagate into ICs |
| Low dynamic impedance | Enables tight clamping window (VC − VBR = ~20 V) to minimize protected circuit overvoltage margin |
| UL recognition | File #E-326243 - confirms flame-retardant housing and electrical safety compliance for end-equipment certification |
| Halogen-free construction | Complies with IEC 61249-2-21 - meets RoHS and automotive material restrictions without compromising surge capability |
Applications
| Automotive Power Distribution | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting fuse box electronics and body control modules against load dump surges in 12 V/24 V vehicle architectures. IC Role / Device Role / Timing Role: Primary overvoltage clamp on battery feed lines, placed upstream of DC-DC converters and LDOs. Use Value: Clamps ISO 7637-2 Pulse 5a (110 V, 400 ms) to ≤77 V, preventing latch-up or gate oxide rupture in downstream PMICs. |
Use Scenario: Safeguarding programmable logic controllers (PLCs) and motor drives from switching transients on 24 V industrial power rails. IC Role / Device Role / Timing Role: Standoff protector on DIN-rail power inputs, absorbing repetitive inductive kickback from solenoid coils. Use Value: Withstands ≥1000 surges at 8.1 A without parameter shift, ensuring long-term reliability in factory automation environments. |
| LED Lighting Driver Protection | Telecom Power Interface |
Use Scenario: Shielding constant-current LED drivers from ESD events and capacitor discharge transients during hot-plug maintenance. IC Role / Device Role / Timing Role: Reverse-biased TVS across driver output terminals, triggered only during fault conditions. Use Value: Sub-μA leakage at 47.8 V preserves driver efficiency; 77 V clamping prevents MOSFET drain-source breakdown in high-side switch designs. |
Use Scenario: Front-end surge suppression on 48 V PoE injectors and telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage transient limiter before secondary TVS arrays and transient filters. Use Value: 600 W rating handles IEC 61000-4-5 Level 4 (4 kV line-earth) surges without degradation, reducing need for multi-stage protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ58A | Same DO-214AC package; 58 V VBR min, 64.4 V max; 400 W rating; no AEC-Q101 qualification | Lower surge rating limits use to non-automotive industrial applications | Select when cost sensitivity outweighs automotive qualification and 600 W headroom |
| Vishay 1.5KE56A | DO-201AD package; identical 56 V nominal rating and 77 V clamping; 1500 W rating; AEC-Q101 not claimed | Larger footprint and higher surge capacity suit high-energy AC/DC front ends | Choose for legacy board designs using DO-201AD or where >600 W margin is required |
Compared with SMAJ58A and 1.5KE56A, the P6KE56AH uniquely combines AEC-Q101 qualification, DO-15 form factor, and 600 W 10/1000 μs capability - making it the only option qualified for direct replacement in automotive power distribution modules requiring both space constraints and regulatory compliance.
Availability
P6KE56AH is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC input protection, LED lighting driver safeguarding, and telecom power interface applications requiring stable component supply across extended production lifecycles.
Supply support for P6KE56AH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The P6KE series belongs to TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient immunity in harsh automotive and industrial power systems where reliability under thermal and electrical stress is critical.
FAQ
What is the exact breakdown voltage range for P6KE56AH?
The P6KE56AH has a guaranteed breakdown voltage (VBR) range of 53.2 V to 58.8 V at 1 mA test current, measured per ANSI/IEEE C62.35. This range ensures consistent clamping behavior across production lots and supports design margining against downstream IC absolute maximum ratings.
Is P6KE56AH suitable for bidirectional transient protection?
No - the P6KE56AH is a unidirectional TVS diode, indicated by the "H" suffix and absence of "CA" designation. It conducts only in forward direction and clamps in reverse; for bidirectional protection, select P6KE56AH's counterpart P6KE56CH or P6KE56AHA, which feature symmetrical breakdown in both polarities.
Does P6KE56AH meet automotive qualification standards?
Yes - the "H" suffix explicitly denotes AEC-Q101 qualification per the manufacturer's ordering information. This includes stress testing for temperature cycling, high-temperature reverse bias, and humidity bias life, confirming suitability for under-hood and chassis-mounted automotive applications.
What is the maximum clamping voltage of P6KE56AH at rated surge current?
The P6KE56AH clamps to a maximum of 77.0 V at its rated peak pulse current (IPP) of 8.1 A, defined under the standard 10/1000 μs double-exponential waveform. This value is measured per JEDEC test conditions and appears in the official electrical specifications table for the part.
Can P6KE56AH be used in surface-mount designs?
No - the P6KE56AH uses a DO-204AC (DO-15) axial-leaded package intended for through-hole mounting. For surface-mount equivalents with similar electrical specs, consider SMAJ56A (DO-214AC) or SMCJ56A (DO-214AB), though neither carries AEC-Q101 qualification like the P6KE56AH.
P6KE56AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 8.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE56AH FAQ
1.How can I place an order for P6KE56AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE56AH 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 P6KE56AH reliable?
The price and inventory of P6KE56AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE56AH is usually 5 days.
3.What payment methods are accepted for P6KE56AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE56AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE56AH?
P6KE56AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE56AH 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 P6KE56AH?
For technical support, including P6KE56AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE56AH requirements.
6.How does Aetrix verify that P6KE56AH is sourced from the original manufacturer or authorized distributors?
All P6KE56AH 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 P6KE56AH meets industry standards.
7.What is the process for return or replacement of P6KE56AH?
All P6KE56AH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE56AH, 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 P6KE56AH part is unused and in its original packaging.
Return procedure for P6KE56AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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