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Taiwan Semiconductor Corporation 1.5KE27A B0G
- Part No.:
- 1.5KE27A B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE27A B0G.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,264
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Product details
Overview
1.5KE27A B0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 27 V, working stand-off voltage 23.1 V, clamping voltage 37.5 V at 42 A peak pulse current, and junction temperature rating up to +175°C - used for automotive ECU power rail protection against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE27A B0G datasheet, 1.5KE27A B0G pinout, 1.5KE27A B0G application, or 1.5KE27A 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 compatibility with lead-free reflow profiles per J-STD-002.
Technical Context
The 1.5KE27A B0G operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified breakdown range (25.7–28.4 V at 1 mA test current). It delivers 1500 W peak pulse power handling per 10/1000 µs waveform with fast response (<1.0 ps from 0 V to VBR) and low dynamic impedance to limit transient overvoltage across protected ICs.
Its electrical behavior follows JEDEC-standard TVS parameters: maximum clamping voltage of 37.5 V at 42 A IPP, working stand-off voltage of 23.1 V, and temperature coefficient of VBR at 0.096 %/°C. The device meets ISO 7637-2 immunity requirements and is rated for junction temperatures from –55°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1 mA | 25.7–28.4 V - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPP = 42 A | 37.5 V - clamped voltage during worst-case 10/1000 µs surge, limiting stress on downstream circuitry |
| PPK | 1500 W - peak pulse power dissipation capability under standardized surge waveform |
| IPP max | 42 A - maximum non-repetitive peak impulse current it can safely divert without failure |
| TJ max | +175°C - maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage @ VWM | <1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
Pinout & Package
Package: DO-201 axial-leaded plastic package with cathode band marking; UL 94V-0 compliant molding compound; pure tin-plated leads solderable per J-STD-002; weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode (banded end) | Avalanche conduction terminal | Connected to protected line (e.g., 24 V supply rail); conducts during reverse overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Surge rating | 1500 W at 10/1000 µs - handles automotive load dump and inductive switching surges without degradation |
| Clamping ratio | VC/VBR ≈ 1.39 - tight voltage control ensures protected ICs remain within safe operating area |
| Response time | <1.0 ps - faster than most system-level transients, enabling effective suppression before damage occurs |
| AEC-Q101 qualified | Available in H-suffix variants - validated for automotive-grade reliability including temperature cycling and humidity testing |
| RoHS & halogen-free | Complies with IEC 61249-2-21 - supports environmentally regulated industrial and automotive manufacturing |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) from ISO 7637-2 Pulse 1 (inductive load disconnect) and Pulse 2a (battery dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and chassis ground to clamp transients before they reach power management ICs and microcontrollers. Use Value: Limits voltage to ≤37.5 V during 42 A surges, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. | Use Scenario: Safeguarding digital input channels of programmable logic controllers against field-wiring induced EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: Mounted at connector entry point to shunt fast-rising transients (<5 ns rise time) away from optocoupler inputs and level-shifting buffers. Use Value: Sub-µA leakage at 23.1 V ensures no false triggering of 24 V logic thresholds; low dynamic impedance maintains signal fidelity. |
| LED Driver Overvoltage Clamp | DC Motor Controller Flyback Suppression |
Use Scenario: Preventing catastrophic failure of constant-current LED drivers subjected to accidental 48 V connection or battery reversal. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-LED string anode to absorb reverse polarity and overvoltage events. Use Value: Clamps to 37.5 V before driver IC's absolute maximum rating (typically 40–45 V) is exceeded, preserving MOSFET gate integrity. | Use Scenario: Suppressing flyback voltage spikes generated by brushed DC motor commutation in automotive seat/mirror actuators. IC Role / Device Role / Timing Role: Placed across motor terminals to provide low-impedance path for inductive energy dissipation during PWM turn-off. Use Value: 1500 W surge capacity absorbs multi-cycle switching energy without thermal runaway; DO-201 package allows direct PCB mounting near motor connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower peak power (600 W), smaller SMB package, VBR = 26.7–29.5 V, VC = 38.9 V @ 15.4 A | Not AEC-Q101 qualified; limited to consumer/industrial use; lower surge margin for automotive load dump | Select when space-constrained layout requires SMT and surge demands are ≤600 W |
| 1.5KE27CA | Bidirectional variant; same VBR, VC, and PPK; symmetrical clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal is possible | Choose only if bidirectional protection is needed - unidirectional 1.5KE27A B0G offers superior leakage and lower cost for DC rails |
Compared with SMBJ24A, the 1.5KE27A B0G provides 2.5× higher surge power and AEC-Q101 qualification but requires axial through-hole mounting; versus 1.5KE27CA, it reduces leakage by >50% in DC applications while eliminating unnecessary bidirectional conduction paths.
Availability
1.5KE27A B0G is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, LED lighting drivers, and DC motor controllers requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for 1.5KE27A 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, serving global automotive, industrial, and consumer markets since 1979.
The 1.5KE series is designed specifically for high-energy transient suppression in harsh environments - emphasizing robustness, repeatable clamping, and compliance with automotive immunity standards like ISO 7637-2.
FAQ
What is the exact breakdown voltage range for 1.5KE27A B0G?
The 1.5KE27A B0G has a guaranteed breakdown voltage range of 25.7 V to 28.4 V at 1 mA test current (IT), measured per JEDEC standard after 30 ms square-wave pulse application. This tighter tolerance versus the base 1.5KE27 (24.3–29.7 V) reflects tighter binning for improved design margin control in critical applications.
Is 1.5KE27A B0G AEC-Q101 qualified?
No - the "B0G" suffix indicates green compound and tape-and-reel packaging (500 pcs/ammo box), but does not denote AEC-Q101 qualification. AEC-Q101 qualified versions carry the "H" suffix (e.g., 1.5KE27AH). Engineers requiring automotive-grade reliability must specify the H-suffix variant explicitly.
What is the maximum clamping voltage of 1.5KE27A B0G and at what current?
The maximum clamping voltage (VC) of 1.5KE27A B0G is 37.5 V, measured at peak pulse current (IPP) of 42 A under the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across temperature and lifetime, ensuring predictable overvoltage limiting in protected circuits.
Can 1.5KE27A B0G be used in bidirectional protection circuits?
No - the 1.5KE27A B0G is strictly unidirectional, with cathode band marking and asymmetric IV characteristics. For bidirectional protection, the correct variant is 1.5KE27CA (C = common-anode, A = tightened VBR tolerance), which provides symmetrical clamping in both polarities and identical surge ratings.
What is the thermal derating behavior of 1.5KE27A B0G above 25°C ambient?
1.5KE27A B0G follows standard JEDEC derating: peak pulse power decreases linearly from 1500 W at 25°C to zero at 175°C junction temperature. Derating curves (Fig.2 in datasheet) show ~85% power retention at 75°C ambient with no heatsink, dropping to ~50% at 125°C - requiring careful PCB copper area design for sustained surge duty cycles.
1.5KE27A 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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 42A
- 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
1.5KE27A B0G FAQ
1.How can I place an order for 1.5KE27A B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE27A 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 1.5KE27A B0G reliable?
The price and inventory of 1.5KE27A B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE27A B0G is usually 5 days.
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1.5KE27A B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE27A 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 1.5KE27A B0G?
For technical support, including 1.5KE27A B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE27A B0G requirements.
6.How does Aetrix verify that 1.5KE27A B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE27A 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 1.5KE27A B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE27A B0G?
All 1.5KE27A B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE27A 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 1.5KE27A B0G part is unused and in its original packaging.
Return procedure for 1.5KE27A B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE27A B0G Tags
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