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Taiwan Semiconductor Corporation 1.5KE56A B0G
- Part No.:
- 1.5KE56A B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE56A B0G.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,945
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Product details
Overview
1.5KE56A B0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 56 V, working stand-off voltage 47.8 V, clamping voltage 77.0 V at 20 A peak pulse current, and junction temperature range −55 °C to +175 °C. It protects automotive power rails and industrial I/O interfaces against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE56A B0G datasheet, 1.5KE56A B0G pinout, 1.5KE56A B0G application, or 1.5KE56A B0G equivalent, key selection criteria include clamping performance under 10/1000 μs surge, low leakage (<1 μA above 10 V), AEC-Q101 qualification status, thermal derating behavior, and DO-201 mechanical compatibility with high-current PCB traces.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds its 53.2–58.8 V breakdown range (tested at 1 mA), it avalanches to limit downstream voltage to ≤77.0 V at 20 A. Its <1.0 ps response time ensures protection before sensitive ICs experience overvoltage stress.
Designed for automotive-grade reliability, the 1.5KE56A B0G meets ISO 7637-2 immunity requirements and supports steady-state power dissipation of 5 W at 75 °C lead temperature. Its DO-201 package enables high surge current handling (200 A IFSM) while maintaining UL 94V-0 flammability compliance and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1 mA | 53.2–58.8 V - defines precise avalanche initiation threshold for reliable clamping onset |
| VWM | 47.8 V - maximum continuous reverse operating voltage without significant leakage |
| VC @ IPP = 20 A | 77.0 V - clamped voltage during 10/1000 μs surge; determines protected circuit's max stress level |
| PPK | 1500 W - peak pulse power rating at TA = 25 °C; defines single-event surge energy handling |
| IPP Max | 20 A - peak impulse current capability at rated clamping voltage |
| TJ Range | −55 °C to +175 °C - extended junction temperature range supports under-hood automotive use |
| Leakage @ VWM | <1 μA - ultra-low blocking current preserves system standby power integrity |
Pinout & Package
DO-201 axial-leaded package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker test requirements. Case meets UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference node | Connected to system ground or low-impedance return path; forms shunt path during avalanche |
| Cathode | Protected line input | Connected to line being protected (e.g., 48 V rail); polarity marking ensures correct orientation |
Key Features
| Feature | Design Value |
|---|---|
| Surge rating | 1500 W at 10/1000 μs - handles high-energy load dump and inductive switching events |
| Clamping ratio | VC/VBR ≈ 1.32 - tight ratio minimizes overvoltage margin required in protected circuit design |
| Response time | <1.0 ps - faster than most microcontroller GPIO response, enabling pre-failure protection |
| AEC-Q101 qualified | Available in H-suffix variants - validated for automotive electronic module deployment per stress test requirements |
| Low dynamic impedance | Enables stable clamping under fast-rising transients - critical for CAN/LIN bus line protection |
Applications
| Automotive Power Rail Protection | Industrial I/O Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients on 48 V battery-fed ECUs per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Shunt TVS diode placed between power rail and chassis ground, triggered within picoseconds of overvoltage onset. Use Value: Limits rail voltage to ≤77.0 V during 1500 W surges, preventing damage to 60 V-rated DC-DC controllers and MCU power supplies. | Use Scenario: Protecting RS-485 transceivers connected to long field wiring exposed to EFT and lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional clamp on VCC line and bidirectional clamps on differential data lines (using complementary CA variant). Use Value: Maintains signal integrity by clamping common-mode surges to <80 V while adding <1 pF junction capacitance-no data rate degradation. |
| LED Driver Overvoltage Protection | Programmable Logic Controller (PLC) Input Protection |
Use Scenario: Safeguarding constant-current LED drivers from 100 V+ transients induced by relay coil de-energization. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output terminals, conducting only during overvoltage events. Use Value: Absorbs 1500 W surge energy without degradation, preserving driver MOSFET gate oxide integrity and enabling >100,000 surge cycles. | Use Scenario: Shielding 24 V digital input modules from inductive kickback and ESD events in factory automation cabinets. IC Role / Device Role / Timing Role: Front-end protection device mounted directly at terminal block, before optocoupler input stage. Use Value: Blocks >47 V transients while drawing <1 μA at 24 V nominal, eliminating false triggering and reducing input conditioning complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | DO-214AA package; 58 V VBR; 600 W PPK; 100 A IPP | Lower surge rating; surface-mount only; higher thermal resistance | Select when board space is constrained and 600 W surge capacity suffices |
| 1N6289A | Same manufacturer, identical specs, JEDEC 1N6289A part number; DO-201 package | No functional difference; dual-marking for same die and assembly | Direct form-fit-function replacement; identical sourcing and qualification |
Compared with SMBJ58A, the 1.5KE56A B0G delivers 2.5× higher surge power (1500 W vs. 600 W) and superior thermal robustness in through-hole mounting, while 1N6289A offers identical electrical and mechanical performance with alternate JEDEC designation-enabling seamless BOM flexibility without design change.
Availability
1.5KE56A B0G is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial PLC input conditioning, and LED driver overvoltage safeguarding requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE56A B0G 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, specializing in power management, protection, and signal conditioning devices.
The 1.5KE series was developed specifically for high-reliability transient suppression in harsh environments-including automotive, industrial control, and telecom infrastructure-where sustained surge energy absorption and long-term parametric stability are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE56A B0G?
The 1.5KE56A B0G has a guaranteed breakdown voltage range of 53.2 V to 58.8 V when tested at 1 mA DC current, per the manufacturer's electrical specifications table. This ±5% tolerance around the nominal 56 V rating ensures consistent clamping behavior across production lots and supports robust design margining for protected circuits. The 1.5KE56A B0G maintains this specification across its full operating temperature range.
Is 1.5KE56A B0G suitable for bidirectional transient protection?
No, the 1.5KE56A B0G is a unidirectional TVS diode and must be used with correct polarity-cathode connected to the line being protected. For bidirectional protection, the 1.5KE56CA B0G (or equivalent CA-suffix variant) is required. Using 1.5KE56A B0G in reverse-biased configuration will not provide symmetrical clamping and may fail catastrophically under negative transients.
Does 1.5KE56A B0G meet AEC-Q101 qualification?
The base 1.5KE56A B0G part is not AEC-Q101 qualified; qualification requires the "H" suffix (e.g., 1.5KE56AH). The "B0G" suffix denotes green compound and tape-and-reel packaging but does not imply automotive qualification. Engineers requiring AEC-Q101 compliance must specify 1.5KE56AH B0G or confirm qualification status via Taiwan Semiconductor's official documentation for the exact orderable part.
What is the maximum clamping voltage of 1.5KE56A B0G at rated surge current?
The maximum clamping voltage of 1.5KE56A B0G is 77.0 V when subjected to a 20 A peak impulse current with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on the protected circuit during worst-case surge events. The 1.5KE56A B0G achieves this clamping performance while maintaining low dynamic impedance and sub-nanosecond response.
How does thermal derating affect 1.5KE56A B0G's surge capability above 25°C?
Per the manufacturer's Pulse Derating Curve (Fig.2), the 1.5KE56A B0G's peak pulse power rating decreases linearly above 25°C ambient: at 75°C, it retains ~75% of its 1500 W rating (≈1125 W), and at 125°C, ~45% (≈675 W). This derating applies to single non-repetitive pulses; for repetitive surges, average power limits and PCB copper area become dominant constraints. The 1.5KE56A B0G's DO-201 package supports both with- and without-heat sink operation modes.
1.5KE56A B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- 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):
- 20A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-201
1.5KE56A B0G FAQ
1.How can I place an order for 1.5KE56A B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE56A B0G 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 1.5KE56A B0G reliable?
The price and inventory of 1.5KE56A B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE56A B0G is usually 5 days.
3.What payment methods are accepted for 1.5KE56A B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE56A B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE56A B0G?
1.5KE56A B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE56A B0G 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 1.5KE56A B0G?
For technical support, including 1.5KE56A B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE56A B0G requirements.
6.How does Aetrix verify that 1.5KE56A B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE56A B0G 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 1.5KE56A B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE56A B0G?
All 1.5KE56A B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE56A B0G, 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 1.5KE56A B0G part is unused and in its original packaging.
Return procedure for 1.5KE56A B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE56A B0G 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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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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