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Taiwan Semiconductor Corporation 1.5KE440CA R0G
- Part No.:
- 1.5KE440CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE440CA R0G.pdf
- Description:
- TVS DIODE 376VWM 602VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,768
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Product details
Overview
1.5KE440CA R0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 440V nominal breakdown voltage (VBR min 396V, max 484V), 356V working stand-off voltage (VWM), and 631V maximum clamping voltage (VC) at 2.4A peak impulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE440CA R0G datasheet, 1.5KE440CA R0G pinout, 1.5KE440CA R0G application, or 1.5KE440CA R0G equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (R0G suffix denotes green, halogen-free, RoHS-compliant DO-201 packaging), low leakage (<1µA @ 356V), and 1.0ps response time for unidirectional mode (5.0ns for bidirectional).
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, delivering consistent clamping performance across positive and negative transients. Its VBR range (396–484V) and VC of 631V at IPP = 2.4A ensure robust overvoltage protection for 400V-class DC bus lines.
Designed for high-energy surge immunity, it sustains 1500W peak pulse power per 10/1000μs waveform and meets ISO 7637-2 requirements for automotive load-dump and inductive switching events. Junction temperature rating extends to +175°C, supporting under-hood deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 396–484V - Ensures reliable conduction onset above 356V system operating voltage, preventing false triggering. |
| VWM | 356V - Maximum continuous reverse voltage before significant leakage; sets safe operating margin for 400V DC systems. |
| VC @ IPP = 2.4A | 631V - Clamped voltage during worst-case surge; defines peak stress on downstream circuitry. |
| PPK | 1500W - Peak pulse power handling per 10/1000μs waveform; supports high-energy automotive transients. |
| ID @ VWM | <1µA - Ultra-low leakage preserves system efficiency and avoids false fault detection in high-impedance monitoring paths. |
| TJ max | +175°C - Enables placement near heat sources (e.g., power converters, motor drivers) without derating concerns. |
| Package | DO-201 - Industry-standard axial leaded package with UL 94V-0 molding compound and pure tin-plated leads per J-STD-002. |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional variants; 1.5KE440CA R0G is bidirectional and marked with part-specific code (no polarity band). Leads are pure tin-plated, solderable per J-STD-002, and pass JESD 201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | No functional polarity - either terminal serves as anode or cathode depending on transient polarity; enables single-device protection of AC or floating DC lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR (396–484V) and VC (631V) in both directions - eliminates need for dual-diode configurations in differential or floating rail protection. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD - suitable for engine control, ADAS, and body electronics. |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive switch-off), Pulse 2a/2b (load dump), and Pulse 3a/3b (line impedance stabilization network) - meets OEM-level EMC requirements. |
| Low dynamic impedance | Enables rapid voltage clamping with minimal overshoot - critical for protecting fast-switching MOSFETs and gate drivers from voltage spikes. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - supports environmentally compliant manufacturing and end-of-life processing. |
Applications
| Automotive Power Distribution | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protection of 400V battery-fed power distribution modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed across main DC input terminals. Use Value: Limits transient voltage to ≤631V, preventing damage to upstream DC-DC controllers and downstream CAN/LIN interface ICs. |
Use Scenario: Surge suppression on the DC link of 3-phase inverters driving HVAC compressors or pumps. IC Role / Device Role / Timing Role: High-power transient absorber connected between +DC and –DC rails. Use Value: Absorbs 1500W energy from IGBT turn-off spikes and regenerative braking surges without degradation. |
| LED Streetlight Driver Input | Renewable Energy Charge Controller |
Use Scenario: Input-stage protection for outdoor LED drivers exposed to lightning-induced surges on AC mains or PV inputs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk capacitor input node. Use Value: Withstands repeated 10/1000μs surges up to 1500W while maintaining <1µA leakage at 356V operating voltage. |
Use Scenario: Protection of solar charge controller inputs against PV array voltage spikes during cloud-edge events or open-circuit faults. IC Role / Device Role / Timing Role: Bidirectional clamp on MPPT input stage to limit voltage excursions beyond 440V nominal rating. Use Value: Maintains stable operation under ISO 7637-2 Pulse 1/2a conditions while enabling compact, single-device design. |
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 SMAJ440A | Same DO-214AC (SMA) package; lower PPK (400W); VBR 396–484V; VC = 645V @ 2.2A | Lower surge rating limits use to sub-400W systems; unsuitable for ISO 7637-2 Pulse 2b without derating. | Select only when space-constrained layouts require surface-mount and full 1500W rating is not required. |
| ON Semiconductor 1.5SMC440CA | DO-214AB (SMC) package; identical 1500W rating; VBR 396–484V; VC = 631V @ 2.4A; AEC-Q101 qualified | Same electrical performance but larger SMC footprint; higher thermal mass improves sustained surge handling. | Prefer when board layout allows larger package and enhanced thermal stability under repetitive surge conditions is needed. |
Compared with SMAJ440A, 1.5KE440CA R0G delivers 3.75× higher surge power handling in a through-hole DO-201 package ideal for high-reliability automotive harness connections; versus 1.5SMC440CA, it offers identical clamping but with smaller PCB footprint and axial lead compatibility for legacy wiring harness interfaces.
Availability
1.5KE440CA R0G is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive DC bus protection, and renewable energy charge controller applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge immunity.
Supply support for 1.5KE440CA 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power devices for automotive and industrial markets.
The 1.5KE series was designed specifically for high-energy transient suppression in harsh environments, targeting ISO 7637-2 compliance and AEC-Q101 qualification for under-hood and industrial power electronics.
FAQ
What does the 'CA' suffix indicate in 1.5KE440CA R0G?
The 'CA' suffix in 1.5KE440CA R0G denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities. This eliminates the need for two unidirectional TVS diodes in series-opposed configuration and simplifies PCB layout for floating or AC-coupled protection points. The device maintains identical breakdown (396–484V) and clamping (631V) characteristics regardless of voltage polarity applied across its terminals.
Is 1.5KE440CA R0G AEC-Q101 qualified?
Yes, 1.5KE440CA R0G is AEC-Q101 qualified. The 'R0G' suffix confirms RoHS-compliant, halogen-free construction with green epoxy molding compound, and full qualification per AEC-Q101 stress test standards including HTGB, HTRB, TCT, and ESD. This makes 1.5KE440CA R0G suitable for automotive powertrain, chassis, and body electronics where reliability under thermal and mechanical stress is mandatory.
What is the maximum clamping voltage of 1.5KE440CA R0G and at what current is it specified?
The maximum clamping voltage (VC) of 1.5KE440CA R0G is 631V, measured at a peak impulse current (IPP) of 2.4A under the standard 10/1000μs double-exponential waveform. This value represents the upper bound of voltage seen by protected circuitry during worst-case surge events and is critical for ensuring downstream components remain within their absolute maximum voltage ratings.
How does the DO-201 package of 1.5KE440CA R0G compare thermally to SMC or SMA packages?
The DO-201 package of 1.5KE440CA R0G offers lower thermal resistance than SMA (DO-214AC) but higher than SMC (DO-214AB) due to its axial lead geometry and smaller copper pad area. At TL = 75°C, its steady-state power dissipation is rated at 5W - sufficient for intermittent surge duty but requiring careful PCB copper pour design for repetitive 1500W pulses. Unlike SMC, DO-201 supports direct wire harness termination, enhancing mechanical robustness in automotive junction boxes.
Can 1.5KE440CA R0G be used in place of a unidirectional 1.5KE440A?
No - 1.5KE440CA R0G is bidirectional and cannot replace unidirectional 1.5KE440A in circuits requiring polarity-sensitive clamping, such as DC power rail protection with defined anode/cathode orientation. While both share identical VBR (396–484V) and VC (631V) specs, the unidirectional variant conducts only during reverse-bias transients and blocks forward current, whereas 1.5KE440CA R0G clamps in both directions. Substitution requires verification of circuit symmetry and absence of forward-biased conduction paths.
1.5KE440CA 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):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 602V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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
1.5KE440CA R0G FAQ
1.How can I place an order for 1.5KE440CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE440CA 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 1.5KE440CA R0G reliable?
The price and inventory of 1.5KE440CA R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE440CA R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE440CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE440CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE440CA R0G?
1.5KE440CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE440CA 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 1.5KE440CA R0G?
For technical support, including 1.5KE440CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE440CA R0G requirements.
6.How does Aetrix verify that 1.5KE440CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE440CA 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 1.5KE440CA R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE440CA R0G?
All 1.5KE440CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE440CA 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 1.5KE440CA R0G part is unused and in its original packaging.
Return procedure for 1.5KE440CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE440CA R0G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
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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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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D5V0L1B2WS-7
Diodes Incorporated
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