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Taiwan Semiconductor Corporation 1.5KE56CA B0G
- Part No.:
- 1.5KE56CA B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE56CA B0G.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:7,726
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Product details
Overview
1.5KE56CA B0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 56 V, clamping voltage 80.5 V at 19 A peak pulse current, and working stand-off voltage 45.4 V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE56CA B0G datasheet, 1.5KE56CA B0G pinout, 1.5KE56CA B0G application, or 1.5KE56CA B0G equivalent, key selection criteria include bidirectional clamping capability, 175°C junction temperature rating, AEC-Q101 qualification (per ordering code suffix 'H'), low dynamic impedance, and compliance with IEC 61249-2-21 halogen-free requirements.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, delivering consistent clamping performance regardless of transient polarity. Its silicon avalanche structure enables sub-nanosecond response to ESD and fast transients, with typical junction capacitance below 100 pF at 0 V bias.
The device sustains 1500 W peak pulse power per 10/1000 μs waveform, derates linearly above 25°C ambient, and maintains <1 μA leakage at 45.4 V (VWM). It meets JEDEC DO-201 mechanical standards, including UL 94V-0 molding compound and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 50.4 V / 61.6 V at 1.0 mA test current - defines reliable avalanche initiation window for robust overvoltage detection |
| VWM | 45.4 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VC @ IPP | 80.5 V at 19 A peak pulse - clamping voltage seen by protected circuit during worst-case 10/1000 μs surge |
| PPK | 1500 W - peak transient energy absorption capacity under standardized 10/1000 μs waveform |
| Junction Temp (TJ) | –55°C to +175°C - enables operation in under-hood automotive and high-temperature industrial environments |
| Package | DO-201 - industry-standard axial-leaded package with tin-plated leads, UL 94V-0 rated epoxy, 0.090 g mass |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements (qualification indicated by 'H' suffix; B0G denotes green, ammo pack) |
Pinout & Package
DO-201 package: axial-leaded, cylindrical body with cathode band marking for unidirectional variants; for bidirectional 1.5KE56CA, polarity is non-directional - terminals are interchangeable. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Either lead serves as input/output terminal - no polarity dependency; enables placement flexibility on PCB |
| Leads (both) | Current conduction path | Carry full surge current (up to 19 A) during clamping; require ≥0.375" (9.5 mm) lead length for 5 W steady-state dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPP performance in both directions - eliminates polarity-aware layout constraints |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - suitable for 12 V/24 V vehicle networks |
| Low dynamic impedance | Ensures minimal voltage overshoot during fast transients - critical for protecting 3.3 V/5 V logic interfaces downstream |
| Halogen-free construction | Complies with IEC 61249-2-21 - supports RoHS-compliant and environmentally regulated manufacturing |
| Fast response time | <5.0 ns turn-on from 0 V to VBR - responds before most microcontroller I/O damage thresholds are exceeded |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and LDOs. Use Value: Limits voltage to ≤80.5 V during 10/1000 μs surges, preventing damage to 36 V-rated input stages. |
Use Scenario: Shielding digital input modules from field-wire induced surges in factory automation. IC Role / Device Role / Timing Role: Interface-level TVS on 24 V sensor/actuator signal lines. Use Value: Clamps fast EFT bursts (IEC 61000-4-4) within 5 ns, preserving signal integrity for optocoupled isolators. |
| LED Driver Input Stage | Telecom Power Supply Input |
|
Use Scenario: Safeguarding constant-current LED drivers against inductive switching spikes from relay coils. IC Role / Device Role / Timing Role: Bulk transient absorber across main DC input rail. Use Value: Absorbs 1500 W surge energy without degradation, maintaining driver uptime in streetlight applications. |
Use Scenario: Front-end protection for AC/DC PSUs in network equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-stage clamp after MOV primary suppression. Use Value: Provides precise 80.5 V clamping to protect downstream bridge rectifiers and bulk capacitors rated at 100 V. |
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 SMAJ58CA | Lower PPK (400 W), SMA package (surface-mount), VC = 93.6 V @ 4.3 A | Not AEC-Q101 qualified; suited for space-constrained consumer boards, not under-hood automotive | Select when board area is limited and surge energy is ≤400 W; verify thermal pad design for SMA package |
| ON Semiconductor 1.5SMC58CA | Same DO-201 package, but 1.5 kW rating achieved at 1.5x larger case volume; VC = 93.6 V @ 4.3 A | Slightly higher clamping voltage reduces margin for 60 V-rated downstream ICs | Prefer for legacy designs using 1.5SMC footprint; confirm mechanical compatibility with existing DO-201 cutouts |
Compared with SMAJ58CA and 1.5SMC58CA, the 1.5KE56CA B0G delivers superior surge handling (1500 W vs. 400 W/1500 W with higher VC), AEC-Q101 validation, and tighter 80.5 V clamping - making it optimal for automotive-grade 12 V systems where reliability and voltage margin are critical.
Availability
1.5KE56CA B0G is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and LED lighting applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for 1.5KE56CA 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 TVS diodes, rectifiers, and power devices since 1979.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust DO-201 packaging for harsh thermal and mechanical conditions.
FAQ
What does the 'CA' suffix mean in 1.5KE56CA B0G?
The 'CA' suffix in 1.5KE56CA B0G indicates a bidirectional configuration - the device provides symmetrical clamping in both polarities, unlike unidirectional 'A' variants. This eliminates polarity-sensitive placement during assembly and ensures protection against reverse-polarity transients. The 'B0G' denotes green compound and ammo box packaging (500 units), per TSC's ordering nomenclature.
Is 1.5KE56CA B0G AEC-Q101 qualified?
No - 1.5KE56CA B0G is not AEC-Q101 qualified. Only parts with the 'H' suffix (e.g., 1.5KE56CAH) are AEC-Q101 certified. The 'B0G' suffix specifies green compound and ammo pack packaging, not qualification status. For automotive applications requiring AEC-Q101, specify 1.5KE56CAH instead of 1.5KE56CA B0G.
What is the maximum clamping voltage of 1.5KE56CA B0G at its rated surge current?
The maximum clamping voltage (VC) of 1.5KE56CA B0G is 80.5 V at 19 A peak pulse current (IPP), measured under the standard 10/1000 μs double-exponential waveform. This value ensures downstream 60 V-rated components remain within safe operating limits during worst-case transients.
Can 1.5KE56CA B0G replace a unidirectional TVS like 1.5KE56A in an existing design?
Yes - 1.5KE56CA B0G can replace 1.5KE56A in most cases, as both share identical VBR (50.4–61.6 V), VWM (45.4 V), and PPK (1500 W) ratings. However, because 1.5KE56CA B0G is bidirectional, it lacks polarity marking and will conduct equally in both directions - verify that reverse-bias operation won't interfere with circuit functionality before substitution.
What is the junction-to-ambient thermal resistance (RθJA) for 1.5KE56CA B0G in DO-201 package?
Taiwan Semiconductor does not publish a specific RθJA value for 1.5KE56CA B0G in free-air conditions. Per datasheet Fig.2, the device derates linearly above 25°C ambient: at 75°C, it sustains 5 W steady-state power when mounted on a 0.6" × 0.6" copper pad. For thermal design, assume RθJA ≈ 100°C/W in still air and reduce surge duty cycle accordingly above 75°C ambient.
1.5KE56CA B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Bulk
- Product Status:
- Active
- 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 B0G FAQ
1.How can I place an order for 1.5KE56CA B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE56CA 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 1.5KE56CA B0G reliable?
The price and inventory of 1.5KE56CA B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE56CA B0G is usually 5 days.
3.What payment methods are accepted for 1.5KE56CA B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE56CA B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE56CA B0G?
1.5KE56CA B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE56CA 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 1.5KE56CA B0G?
For technical support, including 1.5KE56CA B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE56CA B0G requirements.
6.How does Aetrix verify that 1.5KE56CA B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE56CA 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 1.5KE56CA B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE56CA B0G?
All 1.5KE56CA B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE56CA 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 1.5KE56CA B0G part is unused and in its original packaging.
Return procedure for 1.5KE56CA B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE56CA B0G Tags
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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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D12V0L1B2LP-7B
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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