My Inquiry
My Account
Taiwan Semiconductor Corporation SMBJ7.0
- Part No.:
- SMBJ7.0
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0.pdf
- Description:
- 600W, 8.6V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,632
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ7.0 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy ESD and surge protection in DC power rails and signal lines. It features a 7.0 V working stand-off voltage (VWM), 7.78–9.51 V breakdown voltage (VBR) at 10 mA, 13.3 V maximum clamping voltage (VC) at 200 A peak pulse current, and 600 W peak pulse power rating with <1.0 ps response time.
For engineers reviewing the SMBJ7.0 datasheet, SMBJ7.0 pinout, SMBJ7.0 application, or SMBJ7.0 equivalent, this device is selected for automotive load-dump immunity, industrial I/O port protection, and low-voltage microcontroller interface safeguarding where fast clamping, low leakage (<1 µA above 10 V), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
The SMBJ7.0 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR range (7.78–9.51 V). Its glass-passivated junction ensures stable breakdown characteristics and low leakage (≤1 µA at 7.0 V), while its thermal resistance (RθJA = 55 °C/W) supports operation up to +150 °C junction temperature under defined derating conditions.
It delivers 600 W non-repetitive peak impulse power with a 10/1000 µs waveform, clamping transients to ≤13.3 V at 200 A. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, enabling robust automated assembly without pre-baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system overvoltage margin. |
| VBR @ IT=10 mA | 7.78–9.51 V - Measured breakdown threshold; defines turn-on consistency across production lots. |
| VC @ IPP=200 A | 13.3 V - Clamped voltage during worst-case 10/1000 µs surge; determines protected circuit's maximum transient exposure. |
| IPP | 200 A - Peak surge current capability; validates suitability for ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2b (battery dump). |
| ID @ VWM | ≤1 µA - Reverse leakage at rated stand-off; ensures minimal power loss and no false triggering in low-power sensor circuits. |
| PPK | 600 W - Non-repetitive peak pulse power; enables single-event protection of 12 V automotive and industrial control inputs. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in engine bay or enclosed industrial enclosures without forced cooling. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability requirements; polarity is unidirectional and marked on the case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; forms return path for clamped surge current. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 12 V rail or CAN_H); conducts avalanche current when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping speed | <1.0 ps response - Enables suppression of nanosecond-scale ESD events before IC damage occurs. |
| Glass passivation | Stable VBR tolerance and long-term reliability - Reduces parameter drift under thermal cycling and humidity stress. |
| ISO 7637-2 compliance | Pulse 1/2a/2b/3a/3b validated - Confirmed performance against automotive electrical disturbance standards without external filtering. |
| Moisture sensitivity | Level 1 per J-STD-020 - Allows direct placement from reel without baking, reducing manufacturing cost and risk of popcorning. |
| RoHS & halogen-free | Compliant per IEC 61249-2-21 - Meets environmental regulations for automotive and industrial end equipment. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protection of 12 V supply rail against load-dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and LDO input, absorbing >600 W surges within 10/1000 µs. Use Value: Limits rail voltage to ≤13.3 V during 200 A pulses, preventing LDO destruction and maintaining MCU uptime per ISO 16750-2. |
Use Scenario: Safeguarding 24 V digital input channels from field-wiring induced surges and EFT bursts. IC Role / Device Role / Timing Role: Front-end transient suppressor on optocoupler input side, shunting energy before signal conditioning circuitry. Use Value: Clamps 1 kV/50 Ω EFT bursts to <13.3 V with <1 µA leakage, preserving input threshold accuracy and eliminating false triggers. |
| LED Driver Power Supply Input | USB-C Port VBUS Line Protection |
Use Scenario: Input-stage surge protection for constant-current LED drivers in streetlight applications exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary TVS on 24–48 V DC input bus, coordinated with upstream fuse and downstream MOV for staged clamping. Use Value: Withstands 600 W pulses and maintains ≤1 µA leakage at 7.0 V, ensuring no standby power penalty while surviving repeated 10/1000 µs transients. |
Use Scenario: Secondary-level overvoltage protection on USB-C VBUS line after primary buck converter, guarding against adapter fault conditions. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp referenced to system ground, placed immediately before USB PD controller. Use Value: Responds in <1 ps to clamp 20 V faults to ≤13.3 V, protecting 5–20 V tolerant PD controllers without affecting 5 V nominal operation. |
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 | Narrower VBR range (7.78–8.60 V vs. 7.78–9.51 V); lower VC (12.0 V vs. 13.3 V) at same IPP. | Better suited for tighter clamping tolerance requirements where 1.3 V lower VC improves margin for 5 V logic interfaces. | Select SMBJ7.0A when system-level clamping headroom is constrained and tighter VBR distribution is needed. |
| SMBJ7V0A (same as SMBJ7.0A) | Identical electrical specs and marking code KL; alternate part numbering convention used by some distributors. | No functional difference; identical use cases and PCB layout. | Verify manufacturer marking (KL) and datasheet revision (R2104) to confirm equivalence before substitution. |
Compared with SMBJ7.0, the SMBJ7.0A offers tighter VBR tolerance and lower clamping voltage-critical for 5 V rail protection-while the SMBJ7V0A is a naming variant with identical performance, requiring only documentation alignment rather than design change.
Availability
SMBJ7.0 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and LED lighting systems requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for SMBJ7.0 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 Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The SMBJ series was developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing ISO 7637-2 compliance, low leakage, and robust packaging for automated SMT assembly.
FAQ
What is the maximum clamping voltage of SMBJ7.0 under standard test conditions?
The SMBJ7.0 has a maximum clamping voltage (VC) of 13.3 V when subjected to a 10/1000 µs surge waveform at 200 A peak current, as specified in the Taiwan Semiconductor R2104 datasheet. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events and is measured at TA = 25°C with proper heat sinking.
Is SMBJ7.0 unidirectional or bidirectional, and how is polarity indicated?
SMBJ7.0 is a unidirectional TVS diode, with polarity indicated by a cathode band on the DO-214AA (SMB) package body. The cathode terminal connects to the protected line (e.g., 12 V rail), and the anode connects to ground. Bidirectional variants require "C" or "CA" suffixes (e.g., SMBJ7.0C), which SMBJ7.0 does not carry.
Does SMBJ7.0 meet automotive surge immunity standards?
Yes, SMBJ7.0 meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a (sudden load disconnection), Pulse 2b (battery feed interruption), Pulse 3a (capacitive coupled noise), and Pulse 3b (inductive coupled noise), as confirmed in the Taiwan Semiconductor SMBJ Series datasheet R2104, making it suitable for automotive body electronics and infotainment power rails.
What is the leakage current specification for SMBJ7.0 at its working voltage?
At its working stand-off voltage (VWM) of 7.0 V, SMBJ7.0 exhibits a maximum blocking leakage current (ID) of 1 µA, measured at TA = 25°C. This low leakage ensures minimal power loss in always-on circuits such as automotive wake-up receivers or battery-backed sensors.
Can SMBJ7.0 be used in place of SMBJ7.0A, and what is the key trade-off?
SMBJ7.0 is not a direct replacement for SMBJ7.0A due to its wider VBR range (7.78–9.51 V vs. 7.78–8.60 V) and higher clamping voltage (13.3 V vs. 12.0 V). Substituting SMBJ7.0 for SMBJ7.0A may reduce system-level overvoltage margin in 5 V logic protection applications, requiring validation of clamping headroom in the target design.
SMBJ7.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 13.3V
- Current - Peak Pulse (10/1000µs):
- 47A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ7.0 FAQ
1.How can I place an order for SMBJ7.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0 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 SMBJ7.0 reliable?
The price and inventory of SMBJ7.0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0 is usually 5 days.
3.What payment methods are accepted for SMBJ7.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0?
SMBJ7.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0 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 SMBJ7.0?
For technical support, including SMBJ7.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0 requirements.
6.How does Aetrix verify that SMBJ7.0 is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0 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 SMBJ7.0 meets industry standards.
7.What is the process for return or replacement of SMBJ7.0?
All SMBJ7.0 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0, 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 SMBJ7.0 part is unused and in its original packaging.
Return procedure for SMBJ7.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0 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…
