My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC170CAHE3/9AT
- Part No.:
- 1.5SMC170CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC170CAHE3/9AT.pdf
- Description:
- TVS DIODE 145VWM 234VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,737
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC170CAHE3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It delivers 1500 W peak pulse power (10/1000 μs), clamps at 234 V under 6.4 A peak pulse current, and features a 145 V standoff voltage with ±5% breakdown tolerance (162–179 V at 1 mA). It is AEC-Q101 qualified and used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC170CAHE3/9AT datasheet, 1.5SMC170CAHE3/9AT pinout, 1.5SMC170CAHE3/9AT application, or 1.5SMC170CAHE3/9AT equivalent, this page provides verified electrical specs, package dimensions, clamping behavior, thermal derating curves, and direct AEC-Q101-compliant alternatives for automotive-grade transient suppression design.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection against bipolar transients such as ESD, lightning-induced surges, and inductive switching spikes without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<1 μA at 145 V) and fast response time (<1.0 ns), while low incremental surge resistance supports consistent clamping performance under repetitive stress.
The device is rated for 150 °C maximum junction temperature and exhibits a thermal resistance of 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads. Its MSL Level 1 rating (260 °C peak reflow) and matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains high-energy transients common in automotive load-dump and industrial motor switching events |
| Standoff Voltage (VWM) | 145 V - maximum continuous reverse voltage before significant conduction begins; sets operating margin below clamping threshold |
| Breakdown Voltage (VBR) | 162–179 V at 1 mA - defines the onset of avalanche conduction; tight ±5% tolerance ensures predictable turn-on across production lots |
| Clamping Voltage (VC) | 234 V at 6.4 A IPPM - actual voltage seen by protected circuit during worst-case surge; critical for IC/MOSFET overvoltage margining |
| Leakage Current (ID) | <1 μA at 145 V - negligible standby power loss and no signal integrity impact in high-impedance sensor or communication lines |
| Junction Temperature Range | −65 °C to +150 °C - supports operation in under-hood automotive, industrial control cabinets, and outdoor telecom enclosures |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated terminals; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity; no orientation required during PCB placement |
| Case / Body | Non-conductive thermal path | Provides mechanical mounting and limited heat dissipation; requires copper pad area per datasheet fig. 2 for thermal derating compliance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensor interfaces, and body electronics requiring zero-failure reliability |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Combination Wave (10/700 μs) surges without degradation |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on downstream components-critical for 150 V-rated MOSFETs and automotive microcontrollers |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; eliminates production delays and moisture-related delamination risk |
| Glass-passivated chip junction | Ensures long-term stability of breakdown voltage and leakage under thermal cycling and humidity exposure |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from battery transients and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before it reaches signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 5 V/12 V interface ICs during ISO 16750-2 jump-start or alternator load-dump events. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids and contactors. IC Role / Device Role / Timing Role: Primary surge suppression element on 24 V DC input rails, coordinated with upstream fusing and filtering. Use Value: Maintains system uptime by absorbing 1500 W pulses without failure, eliminating need for field replacement after surge events. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges on outdoor cabling in security cameras and access points. IC Role / Device Role / Timing Role: Secondary-level protector downstream of gas discharge tubes (GDTs), providing fast-response clamping after GDT crowbar action. Use Value: Limits residual voltage to ≤234 V during combined 10/700 μs waveforms, preserving IEEE 802.3af/at compliance. |
Use Scenario: Protecting gate drivers and MCU GPIOs in washing machine motor inverters from back-EMF spikes during brushless DC motor commutation. IC Role / Device Role / Timing Role: Localized TVS on half-bridge driver supply rails and feedback sensing nodes to suppress sub-100 ns transients. Use Value: Eliminates false triggering and resets caused by 100–500 V spikes, improving appliance reliability certification pass rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CAHE3/57T | Same VWM (145 V), VC (234 V), and PPPM (1500 W), but SMB package (smaller footprint, higher RθJA = 85 °C/W) | Limited to lower-power or space-constrained designs where thermal mass is sufficient for intermittent surges | Select when board area is constrained and average power dissipation remains below 3.5 W with adequate copper pour |
| 1.5KE170CA-E3/54 | Through-hole DO-201 package; identical electrical specs but higher mounting inductance and no AEC-Q101 qualification | Suitable for prototyping or non-automotive industrial use where reflow compatibility and automotive qualification are not required | Choose for legacy through-hole assembly lines or cost-sensitive non-automotive applications where SMT is unavailable |
Compared with 1.5SMC170CAHE3/9AT, SMBJ170CAHE3/57T offers identical protection performance in a smaller footprint but reduced thermal capability, while 1.5KE170CA-E3/54 provides equivalent clamping in a through-hole format without automotive qualification-making the original the only AEC-Q101-compliant SMC-packaged option for high-reliability automotive deployments.
Availability
1.5SMC170CAHE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, telecom infrastructure equipment, and consumer appliance motor control systems requiring stable component supply and AEC-Q101 assurance.
Supply support for 1.5SMC170CAHE3/9AT 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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments-emphasizing AEC-Q101 qualification, low clamping ratios, and robust thermal performance in compact SMC packages.
FAQ
What is the clamping voltage of the 1.5SMC170CAHE3/9AT under its rated peak pulse current?
The 1.5SMC170CAHE3/9AT clamps at 234 V when subjected to its specified peak pulse current of 6.4 A (10/1000 μs waveform). This value is measured per Figure 1 in Vishay document 88303 and represents the maximum voltage imposed on protected circuitry during a standardized surge event. The 1.5SMC170CAHE3/9AT maintains this clamping performance across its full operating temperature range (−65 °C to +150 °C) with minimal drift.
Is the 1.5SMC170CAHE3/9AT suitable for automotive applications?
Yes, the 1.5SMC170CAHE3/9AT is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It meets requirements for under-hood and cabin electronics, including engine control modules, ADAS camera interfaces, and body control units. The 1.5SMC170CAHE3/9AT undergoes stress testing for temperature cycling, humidity, and mechanical shock per AEC-Q101 Rev D, and is rated for 150 °C junction operation.
How does the bidirectional configuration of the 1.5SMC170CAHE3/9AT affect PCB layout?
The 1.5SMC170CAHE3/9AT has no polarity marking and functions identically regardless of orientation, simplifying PCB layout and eliminating risk of incorrect placement. Engineers can route either terminal to the line being protected and the other to ground or return path without functional consequence. This symmetry also enables single-part stocking for both positive- and negative-going transient paths in differential or floating systems.
What is the standoff voltage (VWM) of the 1.5SMC170CAHE3/9AT, and why is it important?
The standoff voltage (VWM) of the 1.5SMC170CAHE3/9AT is 145 V-this is the maximum continuous reverse voltage the device blocks without entering avalanche conduction. It must be selected ≥10–20% above the system's normal operating voltage (e.g., 120 V AC rectified or 130 V DC bus) to prevent leakage-induced heating or false triggering. The 1.5SMC170CAHE3/9AT's 145 V VWM provides safe margin for 120 V nominal systems while enabling effective clamping at 234 V.
Does the 1.5SMC170CAHE3/9AT require heatsinking in typical applications?
The 1.5SMC170CAHE3/9AT does not require external heatsinking for transient suppression duty cycles (e.g., <0.01% duty cycle per datasheet), but thermal performance depends critically on PCB copper pad area. Vishay specifies 8.0 mm × 8.0 mm copper pads per terminal for rated 1500 W pulse handling. Reducing pad size increases RθJA and reduces sustainable pulse repetition rate; the 1.5SMC170CAHE3/9AT's 75 °C/W rating assumes this minimum layout.
1.5SMC170CAHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 145V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 234V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC170CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC170CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC170CAHE3/9AT 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 1.5SMC170CAHE3/9AT reliable?
The price and inventory of 1.5SMC170CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC170CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC170CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC170CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC170CAHE3/9AT?
1.5SMC170CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC170CAHE3/9AT 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 1.5SMC170CAHE3/9AT?
For technical support, including 1.5SMC170CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC170CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC170CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC170CAHE3/9AT 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 1.5SMC170CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC170CAHE3/9AT?
All 1.5SMC170CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC170CAHE3/9AT, 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 1.5SMC170CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC170CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC170CAHE3/9AT 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 …
