My Inquiry
My Account
STMicroelectronics 1.5KE7V5A
- Part No.:
- 1.5KE7V5A
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7V5A.pdf
- Description:
- TVS DIODE 6.4VWM 14.5VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:1,090
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE7V5A from STMicroelectronics is a unidirectional Transil™ TVS diode designed for transient overvoltage protection in DC power rails and low-voltage signal lines. It features a 7.5 V nominal breakdown voltage (VBR), 11.3 V clamping voltage (VCL) at 132 A peak pulse current (IPP), and 1500 W peak pulse power (10/1000 µs), making it suitable for safeguarding 5 V and 3.3 V logic interfaces, USB ports, and microcontroller I/O pins against ESD and surge events.
For engineers reviewing the 1.5KE7V5A datasheet, 1.5KE7V5A pinout, 1.5KE7V5A application, or 1.5KE7V5A equivalent, key selection criteria include clamping performance under 132 A surges, leakage current ≤500 µA at 6.4 V stand-off, thermal resistance (Rth(j-l) = 20 °C/W), DO-201 package compatibility with manual and automated assembly, and UL 497B certification for telecom surge protection.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping device that remains high-impedance below its breakdown threshold (6.4–7.88 V) and rapidly switches to low-impedance conduction during transients, limiting downstream voltage to ≤11.3 V at 132 A. Its fast response time (<1 ns) and low dynamic impedance ensure effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
The device is rated for 175 °C maximum junction temperature and exhibits a voltage temperature coefficient (αT) of +6.1 mV/°C, enabling predictable VBR drift across industrial temperature ranges. Its 8500 pF capacitance at 0 V (1 MHz) is optimized for DC/low-speed signal line protection-not RF or high-speed data lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs waveform): sustains single high-energy surges without failure in power supply input stages. |
| Breakdown Voltage (VBR) | 7.13–7.88 V @ 10 mA: ensures reliable triggering above 5 V rail while avoiding false trips during normal operation. |
| Clamping Voltage (VCL) | 11.3 V @ 132 A (10/1000 µs): limits transient voltage to safe levels for 3.3 V/5 V ICs with margin to absolute maximum ratings. |
| Leakage Current (IRM) | ≤500 µA @ 6.4 V: minimizes standby power loss and avoids loading on sensitive analog or reference circuits. |
| Junction-to-Lead Thermal Resistance | 20 °C/W: enables efficient heat dissipation through PCB copper pours or heatsinking leads in continuous surge environments. |
| Capacitance (CJ) | 8500 pF @ 0 V, 1 MHz: suitable for DC power rails and low-frequency signals; not recommended for >1 MHz data lines. |
| UL Recognition | UL 497B File QVGQ2.E136224: certified for use in telecommunications primary protector applications per safety standards. |
Pinout & Package
1.5KE7V5A is housed in a DO-201 axial leaded package (EIAJ standard), featuring two terminals: anode and cathode. The cathode is marked by a band on the body. This through-hole package supports manual soldering (max 230 °C for 10 s at 5 mm from case) and wave/reflow-compatible assembly when mounted on FR4 PCBs with adequate copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (unidirectional) | Connected to protected line; conducts surge current toward ground when cathode is held at higher potential. |
| Cathode | Reference terminal / clamping node | Typically tied to system ground or low-impedance return path; defines clamping voltage relative to this node. |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping factor (VCL/VBR) | 1.59 (11.3 V / 7.13 V): delivers tighter voltage control than typical silicon avalanche diodes, reducing stress on downstream ICs. |
| Fast response time | <1 ns: reacts before most semiconductor junctions can be damaged by ESD or fast-rising surges. |
| High surge current capability | 132 A peak (10/1000 µs): handles multiple Category 3/4 AC line surges or repeated ESD strikes without degradation. |
| Lead-free and RoHS-compliant | ECOPACK® Grade 2: meets environmental regulations for industrial and consumer electronics manufacturing. |
| Stable voltage temperature coefficient | +6.1 mV/°C: enables accurate VBR prediction across -65 °C to +175 °C operating range. |
Applications
| Industrial PLC I/O Protection | USB 2.0 Port Surge Suppression |
|---|---|
|
Use Scenario: Protecting 24 V DC digital input modules from induced surges on long field wiring in factory automation. IC Role / Device Role / Timing Role: Clamps transients up to 1 kV/1 A to ≤11.3 V, preventing latch-up or gate oxide damage in optocoupler input stages. Use Value: Enables compliance with IEC 61000-4-4 (EFT) Level 4 (2 kV) when combined with series impedance, extending module service life. |
Use Scenario: Safeguarding host controller USB D+ and D− lines against ESD events during hot-plug connection. IC Role / Device Role / Timing Role: Acts as low-capacitance shunt clamp (8500 pF) between data line and ground, suppressing ±15 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity below 480 Mbps while limiting voltage excursion to <12 V, preserving USB PHY functionality. |
| DC Power Supply Input Stage | Automotive Body Control Module (BCM) Sensors |
|
Use Scenario: Secondary overvoltage protection on 5 V regulated output of buck converter feeding MCU and peripherals. IC Role / Device Role / Timing Role: Suppresses load-dump transients and switching noise spikes exceeding 7.5 V, complementing upstream ceramic capacitors. Use Value: Prevents brown-out resets and internal LDO failures by holding rail voltage within 11.3 V for ≥1 ms during 1500 W surges. |
Use Scenario: Protecting LIN bus transceivers and analog sensor inputs (e.g., temperature, pressure) in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Clamps ISO 7637-2 Pulse 1 (−150 V/50 Ω) and Pulse 2a (+100 V) transients to safe levels referenced to chassis ground. Use Value: Ensures uninterrupted communication during battery disconnect/reconnect events without requiring external Zener clamps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A (Diodes Inc.) | Lower peak power (600 W), smaller SMB package (surface-mount), VBR = 7.0–7.78 V, VCL = 10.5 V @ 57.1 A. | Better suited for space-constrained PCBs but requires derating for >1 kA surge events. | Select when board area is critical and surge energy is limited to IEC 61000-4-5 Level 3 (1 kV/2 Ω). |
| P6KE7.5A (ON Semiconductor) | Same DO-201 package, identical VBR range (7.1–7.9 V), but higher VCL = 12.0 V @ 125 A and lower CJ = 7500 pF. | Slightly looser clamping margin; preferred where lower capacitance is prioritized over minimal VCL. | Choose when protecting higher-impedance analog sensors where 0.7 V higher clamping is acceptable for 1000 pF capacitance reduction. |
Compared with SMBJ7.0A and P6KE7.5A, the 1.5KE7V5A offers superior surge handling (1500 W vs. 600 W/600 W) and tighter clamping (11.3 V), making it optimal for high-reliability industrial and automotive power rail protection where robustness outweighs footprint constraints.
Availability
1.5KE7V5A is available at Aetrix Electronics and suitable for industrial PLCs, USB peripheral designs, DC power supply input stages, and automotive body control modules requiring stable component supply and long-term manufacturability.
Supply support for 1.5KE7V5A 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and protection components for industrial, automotive, and consumer markets.
The 1.5KE series belongs to ST's Transil™ TVS portfolio, engineered specifically for high-energy transient suppression in harsh electromagnetic environments-targeting reliability-critical applications such as factory automation, telecom infrastructure, and automotive electronics.
FAQ
What is the maximum allowable surge current for 1.5KE7V5A under IEC 61000-4-5 testing?
The 1.5KE7V5A withstands a peak pulse current of 132 A under the 10/1000 µs waveform, corresponding to a 1 kV open-circuit voltage test into a 2 Ω source impedance (Level 4). It is rated for single-event application; repeated surges require thermal derating based on junction temperature rise calculated using Rth(j-l) = 20 °C/W.
Can 1.5KE7V5A be used in bidirectional signal lines like RS-485?
No-1.5KE7V5A is unidirectional and only protects against positive transients relative to ground. For bidirectional lines such as RS-485, the bidirectional variant 1.5KE7V5CA must be used, which clamps both positive and negative excursions symmetrically around ground with matched VBR and VCL values.
How does the 8500 pF capacitance affect high-speed digital interfaces?
At 8500 pF, the 1.5KE7V5A introduces significant signal distortion on interfaces faster than ~1 MHz-such as USB 2.0 HS, HDMI, or PCIe. It is appropriate for DC power rails, UART, CAN, or slow analog signals, but high-speed data lines require lower-capacitance TVS devices (e.g., <100 pF) in SOD-323 or DFN packages.
Is 1.5KE7V5A compliant with AEC-Q200 for automotive use?
No-the 1.5KE7V5A is not AEC-Q200 qualified. While it meets UL 497B and operates from −65 °C to +175 °C, ST does not certify this part for automotive-grade reliability testing (e.g., temperature cycling, vibration, humidity bias). For automotive applications, ST recommends the AEC-Q200-qualified SMAJ7.0A or similar qualified variants.
1.5KE7V5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE, TRANSIL™
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 690A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 8500pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE7V5A FAQ
1.How can I place an order for 1.5KE7V5A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7V5A 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 1.5KE7V5A reliable?
The price and inventory of 1.5KE7V5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE7V5A is usually 5 days.
3.What payment methods are accepted for 1.5KE7V5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7V5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7V5A?
1.5KE7V5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7V5A 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 1.5KE7V5A?
For technical support, including 1.5KE7V5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7V5A requirements.
6.How does Aetrix verify that 1.5KE7V5A is sourced from the original manufacturer or authorized distributors?
All 1.5KE7V5A 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 1.5KE7V5A meets industry standards.
7.What is the process for return or replacement of 1.5KE7V5A?
All 1.5KE7V5A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7V5A, 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 1.5KE7V5A part is unused and in its original packaging.
Return procedure for 1.5KE7V5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7V5A 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
