My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ150A-E3/9AT
- Part No.:
- SMCJ150A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150A-E3/9AT.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,885
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ150A-E3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 150 V stand-off voltage (VWM), 243 V maximum clamping voltage (VC) at 6.2 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ150A-E3/9AT datasheet, SMCJ150A-E3/9AT pinout, SMCJ150A-E3/9AT application, or SMCJ150A-E3/9AT equivalent, key selection criteria include clamping performance under surge conditions, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking, AEC-Q101 qualification eligibility via HE3 suffix variants, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its breakdown range (167–185 V at 1 mA test current), it avalanches to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), critical for suppressing ESD and inductive switching spikes.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance from junction to lead (RθJL = 15 °C/W) enabling effective heat transfer into PCB copper. Its low incremental surge resistance supports high-current transients without thermal runaway, validated under JEDEC J-STD-020 MSL level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 167 V / 185 V at 1 mA - guaranteed avalanche onset window for reliable turn-on margin |
| VC @ IPPM | 243 V at 6.2 A - clamped voltage during 10/1000 µs surge, defining worst-case stress on protected IC |
| PPPM | 1500 W - peak transient power handling capacity, derated above 25 °C per Fig. 2 |
| RθJA | 75 °C/W - thermal resistance to ambient, requiring ≥8.0 mm × 8.0 mm copper pad per terminal for full rating |
| Polarity | Unidirectional - cathode marked by band; blocks forward conduction beyond VF ≈ 3.5 V at 100 A |
| Package | SMC (DO-214AB) - surface-mount outline with 0.320" body length, RoHS-compliant matte tin leads |
Pinout & Package
SMCJ150A-E3/9AT uses the standard SMC (DO-214AB) package: a two-terminal, non-polarized surface-mount outline with cathode identified by a visible band on the body. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; carries full surge current during clamping |
| Cathode | High-side connection point | Marked by band; connects to protected line (e.g., 150 V rail); defines unidirectional blocking direction |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts and compatibility with automated pick-and-place equipment |
| Glass-passivated junction | Ensures stable electrical characteristics over temperature and lifetime, minimizing parameter drift |
| 1500 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) in automotive systems |
| AEC-Q101 qualification path | HE3/HM3 suffix variants support automotive-grade reliability requirements including temperature cycling and HTRB |
| MSL Level 1 rating | Allows single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V/48 V battery-connected ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between power rail and chassis ground, clamping surges within 1 ns. Use Value: Limits voltage seen by microcontroller power supply to ≤243 V during 1500 W pulses, preventing latch-up or gate oxide damage. | Use Scenario: Safeguarding analog sensor inputs and digital control signals in variable-frequency drives exposed to inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS on encoder feedback lines and PWM gate drive outputs to absorb flyback energy. Use Value: Maintains signal integrity by clamping transients to 243 V while adding <1 pF junction capacitance at zero bias (typical). |
| Telecom DC Power Interface | Consumer Appliance Main Board Protection |
Use Scenario: Securing 48 V PoE-powered modules and base station backplanes against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary-level TVS on input DC bus, coordinated with upstream fuses and secondary-stage filtering. Use Value: Absorbs up to 1500 W of transient energy without degradation, verified across -55 °C to +150 °C operating range. | Use Scenario: Hardening mainboard power rails in washing machines and HVAC controllers against relay contact bounce and compressor startup spikes. IC Role / Device Role / Timing Role: Standoff-rated protector on 150 V intermediate bus feeding motor drivers and communication ICs. Use Value: Provides repeatable clamping at 243 V with <1.0 µA leakage at 150 V, ensuring no standby current penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC150A | Same VWM (150 V) and PPPM (1500 W), but in smaller SMA package (DO-214AC); RθJA = 100 °C/W | Lower power density handling; requires larger thermal relief or reduced surge duty cycle | Select when board space is constrained and surge energy is lower than SMCJ150A-E3/9AT's full rating |
| 1.5KE150A | Through-hole DO-201 package; identical VWM, VBR, VC, and PPPM specs; higher RθJA (100 °C/W) | Not suitable for automated SMT lines; requires wave solder or hand assembly | Choose for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SAC150A and 1.5KE150A, the SMCJ150A-E3/9AT delivers superior thermal performance (RθJA = 75 °C/W vs. 100 °C/W), full SMT manufacturability, and tighter VBR tolerance (±5.4% vs. ±10%), making it optimal for high-reliability automotive and industrial production.
Availability
SMCJ150A-E3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drives, telecom power interfaces, and consumer appliance main boards requiring stable component supply and consistent surge immunity performance.
Supply support for SMCJ150A-E3/9AT 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where voltage spikes threaten system uptime and safety compliance.
FAQ
What is the breakdown voltage range of the SMCJ150A-E3/9AT?
The SMCJ150A-E3/9AT has a guaranteed breakdown voltage (VBR) range of 167 V to 185 V at 1 mA test current, measured per ANSI/IEEE C62.35. This specification ensures predictable avalanche initiation across manufacturing lots and temperature extremes, directly supporting design margin calculations for 150 V nominal systems. The SMCJ150A-E3/9AT maintains this range under specified test conditions without derating.
Is the SMCJ150A-E3/9AT suitable for automotive applications?
Yes - while the SMCJ150A-E3/9AT itself is commercial-grade (E3 suffix), it belongs to the AEC-Q101-qualified SMCJ family. Vishay offers automotive variants with HE3 or HM3 suffixes (e.g., SMCJ150AHE3_A/I) that undergo full stress testing per AEC-Q101. The SMCJ150A-E3/9AT shares identical electrical and thermal characteristics, enabling direct qualification path for automotive designs requiring PPAP documentation.
What is the maximum clamping voltage of the SMCJ150A-E3/9AT during a surge event?
The SMCJ150A-E3/9AT exhibits a maximum clamping voltage (VC) of 243 V when subjected to its rated peak pulse current (IPPM = 6.2 A) under the standard 10/1000 µs waveform. This value represents the worst-case voltage imposed on protected circuitry during surge events and is validated per JEDEC test methods. The SMCJ150A-E3/9AT maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Does the SMCJ150A-E3/9AT have polarity marking, and how is it oriented in-circuit?
Yes - the SMCJ150A-E3/9AT is unidirectional and features a visible cathode band on the SMC package body. In-circuit, the banded end (cathode) connects to the line being protected (e.g., 150 V rail), while the anode connects to ground or low-impedance return. This orientation ensures reverse-biased operation during normal use and rapid avalanche conduction during overvoltage events. The SMCJ150A-E3/9AT must not be installed in reverse for intended protection function.
What is the thermal resistance and recommended PCB layout for the SMCJ150A-E3/9AT?
The SMCJ150A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To achieve full 1500 W PPPM rating, both terminals must connect to adequate copper area with thermal vias if internal layers are used. The SMCJ150A-E3/9AT's RθJL of 15 °C/W further enables efficient heat transfer into the PCB substrate.
SMCJ150A-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ150A-E3/9AT FAQ
1.How can I place an order for SMCJ150A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150A-E3/9AT 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 SMCJ150A-E3/9AT reliable?
The price and inventory of SMCJ150A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ150A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150A-E3/9AT?
SMCJ150A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150A-E3/9AT 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 SMCJ150A-E3/9AT?
For technical support, including SMCJ150A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150A-E3/9AT requirements.
6.How does Aetrix verify that SMCJ150A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ150A-E3/9AT 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 SMCJ150A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ150A-E3/9AT?
All SMCJ150A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150A-E3/9AT, 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 SMCJ150A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ150A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150A-E3/9AT 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 …
