My Inquiry
My Account
Taiwan Semiconductor Corporation SMCJ7V5A
- Part No.:
- SMCJ7V5A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7V5A.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,556
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ7V5A from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 7.5V working stand-off voltage (VWM), 8.33–9.21V breakdown voltage (VBR), and 12.9V maximum clamping voltage (VC) at 100A peak pulse current - designed for automotive ESD and load-dump protection in power supply rails and I/O interfaces.
For engineers reviewing the SMCJ7V5A datasheet, SMCJ7V5A pinout, SMCJ7V5A application, or SMCJ7V5A equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, junction temperature limits (−55°C to +150°C), moisture sensitivity level (MSL 1), and compatibility with automated SMT placement on industrial and automotive PCBs.
Technical Context
The SMCJ7V5A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR range (8.33–9.21V at 1mA test current). It delivers sub-1ps response time and clamps transients to ≤12.9V at 100A, enabling robust protection of downstream 5V–12V logic and power circuits against fast electrical fast transients (EFT) and inductive switching spikes.
Its thermal design supports 5W steady-state dissipation at 25°C ambient, with RθJA = 55°C/W and RθJC = 10°C/W. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements, and is rated for operation across −55°C to +150°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 8.33 V / 9.21 V @ 1 mA - Ensures reliable turn-on above system nominal rail while avoiding false triggering |
| VC @ IPPM | 12.9 V @ 100 A - Clamping voltage during worst-case 10/1000μs surge; protects 12V logic inputs |
| PPK | 1500 W - Peak pulse power handling per single 1ms transient per Fig.5 waveform |
| IR @ VWM | <1 μA - Negligible leakage at 7.5V, critical for low-power standby circuits |
| TJ max | +150 °C - Enables use in under-hood automotive environments without derating |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Weight: 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12V rail); conducts avalanche current during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (EFT) immunity testing |
| MSL Level 1 rating | Zero floor life limitation - can be stored indefinitely and placed directly into reflow without baking |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-fed control modules exposed to load-dump transients up to 35V per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤12.9V, preventing damage to 16V-rated input capacitors and LDO regulators. | Use Scenario: Analog sensor signal lines (e.g., 4–20mA loop or 0–10V output) routed through noisy factory floors. IC Role / Device Role / Timing Role: Bidirectional clamping (using SMCJ7V5CA variant) across differential pair or single-ended output. Use Value: Suppresses EFT bursts up to ±2kV (IEC 61000-4-4) without degrading signal integrity or introducing offset. |
| LED Driver Overvoltage Clamp | USB Port ESD Suppression |
Use Scenario: Constant-current LED driver ICs powered from 12V supply in commercial lighting fixtures. IC Role / Device Role / Timing Role: SMCJ7V5A placed across driver IC's VIN and GND pins. Use Value: Clamps inductive kickback from relay or solenoid switching on same board, preserving driver IC lifetime. | Use Scenario: USB 2.0 data lines (D+/D−) in embedded host controllers subject to human-body-model (HBM) ESD. IC Role / Device Role / Timing Role: Paired unidirectional SMCJ7V5A devices on each line, referenced to local ground. Use Value: Responds in <1ps to divert >8kV HBM discharge while maintaining signal rise/fall times below 1ns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A | 600W PPK rating, SMB package (smaller footprint, higher RθJA = 85°C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 or high-current load dumps | Select only when board space is constrained and peak surge current remains ≤50A. |
| 1.5SMC7.5A | Same 1500W rating and DO-214AB package, but from ON Semiconductor; VBR = 8.3–9.19V, VC = 12.9V @ 100A | Drop-in functional replacement with identical clamping behavior and thermal profile | Preferred for dual-sourcing where Taiwan Semiconductor allocation is limited. |
Compared with SMCJ7V5A, SMBJ7.5A offers smaller size but reduced surge capacity and thermal margin, while 1.5SMC7.5A provides identical protection performance and mechanical compatibility - making it the most direct alternative for continuity-critical designs.
Availability
SMCJ7V5A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED driver overvoltage clamping requiring stable component supply and full ISO 7637-2 compliance.
Supply support for SMCJ7V5A 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 Company (TSC) is a vertically integrated Taiwanese manufacturer specializing in discrete semiconductors, including TVS diodes, rectifiers, and MOSFETs, with ISO/TS 16949 certification for automotive-grade products.
The SMCJ series was developed specifically for high-energy transient suppression in automotive and industrial systems, targeting ISO 7637-2 and IEC 61000-4-5 compliance with robust thermal and mechanical reliability.
FAQ
What is the clamping voltage of SMCJ7V5A at its rated peak pulse current?
The SMCJ7V5A has a maximum clamping voltage (VC) of 12.9 V at 100 A peak pulse current (IPPM), measured under the standard 10/1000 μs double-exponential waveform per Fig.5. This value ensures protected circuits remain within safe operating limits during high-energy transients such as automotive load dump or inductive switching events. The SMCJ7V5A maintains this clamping performance across its full operating temperature range (−55°C to +150°C).
Is SMCJ7V5A unidirectional or bidirectional, and how is polarity identified?
The SMCJ7V5A is a unidirectional TVS diode, intended for DC applications where reverse voltage must be blocked until clamping threshold is exceeded. Polarity is indicated by a cathode band printed on the DO-214AB (SMC) package body - the banded end connects to the protected line (e.g., 12V rail), while the anode connects to ground. For bidirectional protection, the SMCJ7V5CA variant must be used instead of the SMCJ7V5A.
Does SMCJ7V5A meet automotive transient immunity standards?
Yes, the SMCJ7V5A meets ISO 7637-2 requirements for Pulses 1 (inductive load dump), 2a/2b (battery disconnection), and 3a/3b (electrical fast transients), as explicitly stated in the manufacturer's datasheet. Its 1500W peak power rating, fast <1ps response, and controlled clamping behavior make it suitable for front-end protection in automotive ECUs, body control modules, and infotainment power supplies. The SMCJ7V5A is not rated for ISO 16750-2 or ISO 7637-3 without additional external filtering.
What is the maximum steady-state power dissipation for SMCJ7V5A?
The SMCJ7V5A has a steady-state power dissipation (PD) rating of 5 W at TA = 25°C, as defined in the Absolute Maximum Ratings table. This value decreases linearly with rising ambient temperature per the Pulse Derating Curve (Fig.2), reaching zero at approximately 125°C ambient. Engineers must verify board-level thermal design - including copper area, airflow, and nearby heat sources - to ensure junction temperature stays within the −55°C to +150°C limit during continuous operation. The SMCJ7V5A is not intended for sustained forward conduction.
Can SMCJ7V5A be used in automated SMT assembly processes?
Yes, the SMCJ7V5A is optimized for automated surface-mount placement: it features a DO-214AB (SMC) package with matte tin-plated leads compliant with J-STD-002 solderability, MSL Level 1 (unlimited floor life), and glass passivated chip junction for process stability. Reflow profiles must follow JEDEC J-STD-020 guidelines for small-outline packages, with peak temperature ≤260°C. The SMCJ7V5A's 0.210 g weight and symmetrical lead geometry support high-yield pick-and-place accuracy and reflow wetting without tombstoning.
SMCJ7V5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 116.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ7V5A FAQ
1.How can I place an order for SMCJ7V5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7V5A 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 SMCJ7V5A reliable?
The price and inventory of SMCJ7V5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7V5A is usually 5 days.
3.What payment methods are accepted for SMCJ7V5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7V5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7V5A?
SMCJ7V5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7V5A 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 SMCJ7V5A?
For technical support, including SMCJ7V5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7V5A requirements.
6.How does Aetrix verify that SMCJ7V5A is sourced from the original manufacturer or authorized distributors?
All SMCJ7V5A 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 SMCJ7V5A meets industry standards.
7.What is the process for return or replacement of SMCJ7V5A?
All SMCJ7V5A units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7V5A, 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 SMCJ7V5A part is unused and in its original packaging.
Return procedure for SMCJ7V5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7V5A 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
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 …
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…
