My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE15A-E3/54
- Part No.:
- 1.5KE15A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15A-E3/54.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,119
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE15A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 15 V breakdown voltage (VBR = 14.3–15.8 V at 1 mA), 12.8 V maximum standoff voltage (VWM), 21.2 V clamping voltage at 70.8 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the 1.5KE15A-E3/54 datasheet, 1.5KE15A-E3/54 pinout, 1.5KE15A-E3/54 application, or 1.5KE15A-E3/54 equivalent, this device is selected for robust surge immunity in automotive power supplies, industrial sensor interfaces, and telecom line protection where fast clamping (<1 ns), low leakage (<1 µA at VWM), and AEC-Q101-qualified variants are critical.
Technical Context
The 1.5KE15A-E3/54 operates as a silicon avalanche diode with glass-passivated junction, delivering bidirectional-capable clamping action only in CA-suffix variants - this part is unidirectional, with cathode marked by band. Its thermal resistance (RθJA = 75 °C/W) and junction temperature range (–55 to +175 °C) support operation in high-ambient environments without forced cooling.
It complies with JEDEC standards for transient suppression, uses a 10/1000 µs test waveform per Fig. 1, and exhibits 0.084 %/°C temperature coefficient of VBR. The 1.5KE package enables through-hole mounting with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1 mA - defines precise avalanche onset threshold for reliable overvoltage triggering |
| VWM | 12.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 21.2 V at 70.8 A - clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform, duty cycle ≤ 0.01 % |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), supports inrush tolerance |
| TJ Range | –55 °C to +175 °C - wide operating junction temperature enables under-hood and industrial deployment |
| Leakage @ VWM | <1 µA - minimal standby power loss and signal integrity impact in always-on circuits |
Pinout & Package
1.5KE15A-E3/54 uses the industry-standard Case Style 1.5KE DO-201AD axial-leaded package: molded epoxy body, 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter, RoHS-compliant matte tin plating. Cathode is identified by a color band on the case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode (banded end) | Avalanche clamping terminal | Connected to protected line (e.g., 12 V rail); conducts when line voltage exceeds VBR relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Handles high-energy transients such as ISO 7637-2 Pulse 5a (load dump) in automotive 12 V systems |
| Clamping response time < 1 ns | Protects sensitive ICs (e.g., microcontrollers, CAN transceivers) before damage-inducing voltage overshoot occurs |
| Low incremental surge resistance | Minimizes VC – VBR delta, reducing let-through energy during clamping |
| AEC-Q101 qualified variants available | Enables direct use in automotive ECUs without additional qualification testing (HE3 suffix) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V supply inputs of engine control units (ECUs) against load dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local regulator input, clamping surges within nanoseconds. Use Value: Limits peak voltage to 21.2 V during 70.8 A transients, preventing damage to downstream LDOs and MCU power pins. | Use Scenario: Shielding 4–20 mA analog sensor outputs from ESD and inductive switching noise in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS connected across signal and return lines, absorbing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Sub-1 ns response ensures clamping occurs before op-amp input stages saturate or latch up. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY power pins and data lines against lightning-induced surges on outdoor PoE switches. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input, coordinated with secondary GDT or MOV for staged protection. Use Value: 1500 W rating handles multi-kA induced surges while maintaining <1 µA leakage at 12.8 V standby. | Use Scenario: Overvoltage protection on AC/DC adapter DC output rails feeding USB-C PD controllers or display logic. IC Role / Device Role / Timing Role: Final-stage TVS on regulated 5 V/9 V/15 V outputs, suppressing ripple-induced spikes and hot-plug transients. Use Value: Tight VBR tolerance (±5 %) ensures predictable clamping without false triggering during normal regulation ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Surface-mount SMB package (vs. axial DO-201AD); same VBR, VC, PPPM; RθJA = 40 °C/W (lower thermal resistance) | Preferred for space-constrained PCBs; requires reflow assembly instead of wave soldering | Select SMBJ15A when board area is limited and thermal management allows SMT placement near heat sinks |
| 1.5KE15CA | Bidirectional variant; identical VBR (14.3–15.8 V), VC, PPPM; no polarity marking; symmetrical clamping in both directions | Required for AC-coupled or floating signal lines (e.g., RS-485, audio), not suitable for DC rail protection | Choose 1.5KE15CA only when protecting balanced differential pairs or AC signals where polarity reversal must be suppressed |
Compared with 1.5KE15A-E3/54, SMBJ15A offers higher power density and better thermal performance but lacks axial through-hole mechanical robustness, while 1.5KE15CA provides bidirectional symmetry at the cost of DC rail compatibility - neither is pin-compatible, and layout changes are required for either alternative.
Availability
1.5KE15A-E3/54 is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor nodes, telecom infrastructure, and consumer power adapters requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE15A-E3/54 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, ruggedness, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of the 1.5KE15A-E3/54 under maximum rated surge current?
The 1.5KE15A-E3/54 has a maximum clamping voltage (VC) of 21.2 V when subjected to its peak pulse current (IPPM) of 70.8 A, measured using the standard 10/1000 µs waveform. This value ensures that downstream components see no more than 21.2 V during worst-case transients, making it suitable for protecting 15 V-tolerant circuits. The 1.5KE15A-E3/54 achieves this with low dynamic impedance and tight VBR distribution.
Is the 1.5KE15A-E3/54 RoHS compliant and lead-free?
Yes, the 1.5KE15A-E3/54 carries the "E3" suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 7a, with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability standards. It also passes JESD 201 Class 1A whisker testing. The 1.5KE15A-E3/54 is commercial-grade and not AEC-Q101 qualified - for automotive use, the HE3 variant (e.g., 1.5KE15AHE3_B) is required.
Can the 1.5KE15A-E3/54 be used in bidirectional signal protection?
No, the 1.5KE15A-E3/54 is a unidirectional TVS diode, intended for DC rail protection where polarity is fixed (e.g., +12 V to ground). For bidirectional signal lines such as RS-485, CAN, or AC-coupled audio, the 1.5KE15CA variant must be used instead. The 1.5KE15A-E3/54 has a cathode band and will not conduct in reverse bias beyond its leakage spec - using it on bidirectional lines risks incomplete protection during negative transients.
What is the maximum operating temperature for the 1.5KE15A-E3/54?
The 1.5KE15A-E3/54 has a maximum junction temperature (TJ) of +175 °C and a storage temperature range of –55 °C to +175 °C. Its thermal resistance from junction-to-ambient is 75 °C/W, meaning at 6.5 W steady-state dissipation (PD), ambient temperature must remain below ~125 °C to avoid exceeding TJmax. In practice, the 1.5KE15A-E3/54 is used for transient-only dissipation, not continuous power, so thermal design focuses on surge duty cycle derating per Fig. 2.
How does the 1.5KE15A-E3/54 compare to the older 1N6275A?
The 1.5KE15A-E3/54 is the modern, RoHS-compliant replacement for the legacy 1N6275A, sharing identical electrical specifications: VBR (14.3–15.8 V), VWM (12.8 V), VC (21.2 V), and PPPM (1500 W). Both use the DO-201AD package and meet the same JEDEC standards. The 1.5KE15A-E3/54 adds E3 suffix compliance, improved process control, and documented AEC-Q101 qualification paths (via HE3 variants), whereas 1N6275A is obsolete and no longer manufactured.
1.5KE15A-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- 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:
- 1.5KE
1.5KE15A-E3/54 FAQ
1.How can I place an order for 1.5KE15A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15A-E3/54 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 1.5KE15A-E3/54 reliable?
The price and inventory of 1.5KE15A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE15A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15A-E3/54?
1.5KE15A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15A-E3/54 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 1.5KE15A-E3/54?
For technical support, including 1.5KE15A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15A-E3/54 requirements.
6.How does Aetrix verify that 1.5KE15A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE15A-E3/54 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 1.5KE15A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE15A-E3/54?
All 1.5KE15A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15A-E3/54, 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 1.5KE15A-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE15A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15A-E3/54 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
