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Taiwan Semiconductor Corporation 1.5KE56CA R0G
- Part No.:
- 1.5KE56CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE56CA R0G.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:8,901
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Product details
Overview
1.5KE56CA R0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) in DO-201 package, with 56V nominal breakdown voltage (VBR min 50.4V, max 61.6V at 1mA), 45.4V working stand-off voltage (VWM), and 80.5V maximum clamping voltage (VC) at 19A peak pulse current - used for ISO 7637-2 Pulse 1/2a/2b/3a/3b protection in automotive power line interfaces.
For engineers reviewing the 1.5KE56CA R0G datasheet, 1.5KE56CA R0G pinout, 1.5KE56CA R0G application, or 1.5KE56CA R0G equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, DO-201 mechanical compatibility, leakage current (<1µA at 45.4V), and thermal derating behavior above 25°C ambient.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, delivering consistent clamping response regardless of transient polarity. Its low dynamic impedance and sub-nanosecond response time (<5ns from 0V to VBR) ensure rapid suppression of fast electrical fast transients (EFT) and load-dump spikes.
The device meets ISO 7637-2 test requirements for automotive electronics, including Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (supply line inductive switching), and Pulses 3a/3b (capacitive coupling transients). Junction temperature rating extends to +175°C, supporting under-hood deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 50.4–61.6V: Ensures reliable conduction onset across manufacturing tolerance; defines minimum surge threshold before clamping. |
| VWM | 45.4V: Maximum continuous reverse voltage without significant leakage; sets safe operating margin below VBR. |
| VC @ IPP = 19A | 80.5V: Peak clamped voltage during 10/1000μs surge; determines maximum stress imposed on protected IC inputs. |
| PPK | 1500W: Peak pulse power handling per JEDEC standard; supports single-event automotive load dump immunity. |
| ID @ VWM | <1µA: Ultra-low blocking leakage preserves system standby power integrity in always-on circuits. |
| TJ max | +175°C: Enables placement near high-temperature sources (e.g., engine control units) without thermal derating failure. |
| Package | DO-201: Industry-standard axial-leaded package with UL 94V-0 molding; compatible with legacy through-hole assembly and manual repair. |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional variants; 1.5KE56CA R0G is bidirectional and lacks polarity marking - terminals are functionally symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional surge path | Identical terminal behavior in either direction; no DC polarity dependency - connects across protected line and ground or differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Electrical characteristics identical in both directions - eliminates need for orientation-aware layout or polarity verification during assembly. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD - required for powertrain and body control module applications. |
| ISO 7637-2 compliance | Tested to Pulse 1, 2a, 2b, 3a, and 3b waveforms - ensures robustness against real-world vehicle electrical disturbances. |
| Low clamping ratio (VC/VBR) | ~1.6× (80.5V / 50.4V): Minimizes overvoltage overshoot during surge events, reducing risk of downstream IC latch-up or gate oxide damage. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver power rails from battery line transients during cold-crank or load dump events. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between VBAT and GND, absorbing energy before it reaches transceiver supply pins. Use Value: Prevents permanent damage to transceivers by limiting voltage excursion to ≤80.5V during 1500W surges - maintaining communication integrity after repeated stress events. | Use Scenario: Safeguarding analog front-end inputs of pressure or temperature sensors exposed to motor drive noise in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across sensor signal and reference lines to divert EFT bursts induced by nearby VFD switching. Use Value: Maintains measurement accuracy by suppressing >1kV EFT pulses within 5ns, preventing ADC saturation or microcontroller reset due to coupled noise. |
| LED Driver Input Stage Protection | DC Power Supply Input Filtering |
Use Scenario: Shielding constant-current LED driver ICs from voltage spikes generated by relay coil de-energization in signage or lighting control panels. IC Role / Device Role / Timing Role: Placed across input capacitor terminals to clamp inductive kickback before it overstresses MOSFET gate drivers or PWM controllers. Use Value: Extends driver lifetime by limiting transient-induced gate oxide stress - validated for ≥100,000 switching cycles under ISO 7637-2 Pulse 2b conditions. | Use Scenario: Front-end surge suppression for 24V industrial PLC power supplies subjected to lightning-induced surges on long field wiring. IC Role / Device Role / Timing Role: First-line defense in multi-stage protection scheme, absorbing bulk energy before MOV or GDT secondary stages activate. Use Value: Reduces required MOV size and thermal stress by handling initial 1500W peak, enabling compact, high-reliability power entry designs. |
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 | Unidirectional; 58V VBR (min 52.2V); DO-214AC (SMA) package; 400W PPK rating | Requires polarity-aware placement; lower surge capacity limits use to non-load-dump scenarios | Select only when board space constraints favor surface-mount and system-level transients are limited to ESD/EFT. |
| ON Semiconductor 1.5SMC58CA | Bidirectional; 58V VBR (min 52.2V); DO-214AB (SMC) package; 1500W PPK; RoHS-compliant | Same clamping performance but SMC footprint requires PCB redesign; slightly higher VC (83.0V) | Preferred for new SMT designs needing same surge rating; not drop-in for DO-201 layouts. |
Compared with 1.5KE56CA R0G, SMAJ58A offers smaller form factor but sacrifices bidirectionality and surge rating, while 1.5SMC58CA matches power capability and polarity behavior but mandates surface-mount rework - making 1.5KE56CA R0G optimal for cost-sensitive, through-hole automotive modules requiring AEC-Q101 validation.
Availability
1.5KE56CA R0G is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, LED lighting control, and DC power supply input stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE56CA R0G 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and thyristors - headquartered in Hsinchu Science Park, Taiwan.
The 1.5KE series was engineered specifically for automotive and industrial transient suppression, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging for harsh-environment deployment.
FAQ
What does the 'CA' suffix indicate in 1.5KE56CA R0G?
The 'CA' suffix in 1.5KE56CA R0G denotes bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, unlike unidirectional 'C' variants. This eliminates orientation sensitivity during placement and enables use across AC-coupled or floating signal lines where polarity reversal may occur. The 'R0G' denotes green (halogen-free) molding compound compliant with IEC 61249-2-21.
Is 1.5KE56CA R0G AEC-Q101 qualified?
Yes, 1.5KE56CA R0G is AEC-Q101 qualified - confirmed by Taiwan Semiconductor's official documentation for the 1.5KE series. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD), validating suitability for automotive powertrain and chassis applications where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of 1.5KE56CA R0G at rated surge current?
The maximum clamping voltage (VC) of 1.5KE56CA R0G is 80.5V at 19A peak pulse current (IPP), measured under the standard 10/1000μs waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case surge events, ensuring protected ICs remain within absolute maximum ratings even during full-rated 1500W transients.
How does the DO-201 package of 1.5KE56CA R0G affect thermal performance?
The DO-201 package of 1.5KE56CA R0G delivers proven thermal robustness with a maximum junction temperature of +175°C and steady-state power dissipation of 5W at TL = 75°C (with 0.375" lead length on 16mm × 16mm copper pad). Its axial-leaded construction allows direct heatsinking via lead bending or mounting to metal chassis, supporting sustained operation in high-ambient environments like engine compartments.
Can 1.5KE56CA R0G replace unidirectional TVS diodes in existing designs?
No - 1.5KE56CA R0G is bidirectional and cannot directly replace unidirectional TVS diodes (e.g., 1.5KE56C) without circuit review. While it provides identical VBR and clamping performance, its symmetrical behavior means it will conduct during negative excursions where a unidirectional part would block. System-level validation is required to confirm no unintended forward conduction affects upstream bias networks or signal integrity.
1.5KE56CA R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 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
1.5KE56CA R0G FAQ
1.How can I place an order for 1.5KE56CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE56CA R0G 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 1.5KE56CA R0G reliable?
The price and inventory of 1.5KE56CA R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE56CA R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE56CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE56CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE56CA R0G?
1.5KE56CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE56CA R0G 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 1.5KE56CA R0G?
For technical support, including 1.5KE56CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE56CA R0G requirements.
6.How does Aetrix verify that 1.5KE56CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE56CA R0G 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 1.5KE56CA R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE56CA R0G?
All 1.5KE56CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE56CA R0G, 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 1.5KE56CA R0G part is unused and in its original packaging.
Return procedure for 1.5KE56CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE56CA R0G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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