My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ7.0CAHE3_B/H
- Part No.:
- SMBJ7.0CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CAHE3_B/H.pdf
- Description:
- 600W,7.0V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,615
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ7.0CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features a 7.0 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), clamping voltage of 12.0 V at 50.0 A peak current, and operates across -55 °C to +150 °C junction temperature - used in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the SMBJ7.0CAHE3_B/H datasheet, SMBJ7.0CAHE3_B/H pinout, SMBJ7.0CAHE3_B/H application, or SMBJ7.0CAHE3_B/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, 12.0 V max clamping at 50 A, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device functions as a voltage-clamping protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing fast-rising transients from inductive switching or ESD events.
The SMBJ7.0CAHE3_B/H is rated for 600 W peak pulse power under 10/1000 µs waveform with 0.01% duty cycle, and derates linearly above 25 °C ambient per Figure 2. It meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown |
| VBR min / max | 7.78 V / 8.60 V at 10 mA - verified breakdown threshold range ensuring consistent turn-on across production lots |
| VC @ IPPM | 12.0 V at 50.0 A - clamping voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure |
| PPPM | 600 W - peak pulse power handling capacity; defines survivability against standardized lightning/surge waveforms |
| IPPM | 50.0 A - maximum non-repetitive peak surge current; sets absolute limit for single-event transient energy absorption |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments |
| RθJA | 100 °C/W - thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; guides PCB thermal design for reliability |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node for bidirectional conduction path | Connected to protected line; forms symmetrical clamping path with cathode during either polarity surge |
| Cathode | Current exit terminal in forward bias; common node for bidirectional conduction path | Connected to protected line; enables identical clamping behavior for positive and negative transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD22 standards |
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth, 2 kV line-line) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or microcontroller GPIOs |
| MSL Level 1 moisture sensitivity | Enables direct use from reel without baking; compatible with standard SMT reflow profiles up to 260 °C peak |
| Glass passivated junction | Ensures stable leakage performance (<1 µA at VWM) and long-term stability under thermal cycling |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting analog/digital sensor outputs (e.g., pressure, temperature) connected to vehicle ECUs from load-dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor line and ground, absorbing ±100 V/50 A surges within nanoseconds. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V ADC inputs and signal conditioning op-amps in AEC-Q100-compliant systems. |
Use Scenario: Shielding 24 V digital input channels on programmable logic controllers from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary transient shunt on each input channel, mounted directly at connector entry point before optocoupler isolation stage. Use Value: Maintains functional safety integrity by limiting transient voltage to <12.0 V, well below optocoupler input breakdown and MCU-level translator thresholds. |
| USB Port ESD Protection | RS-485 Transceiver Line Protection |
|
Use Scenario: Secondary ESD clamp on USB 2.0 D+/D− lines after primary TVS array, targeting system-level IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance (typ. 350 pF at 0 V) bidirectional suppressor placed adjacent to USB connector pins. Use Value: Clamps ESD events to <12.0 V without distorting 480 Mbps data eye; complements low-CJ polymer-based primary protection. |
Use Scenario: Robust surge protection for RS-485 bus lines in factory automation networks exposed to ground potential differences and motor drive noise. IC Role / Device Role / Timing Role: Standalone TVS on differential pair (A/B) and common-mode line (GND), rated for repetitive 600 W surges per IEC 61000-4-5. Use Value: Ensures >10,000 surge cycles at 4 kV without parameter shift, preserving signal integrity and transceiver lifetime in harsh EMI environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VC/PPPM, RoHS-compliant but not automotive qualified | Lacks AEC-Q101 validation; suitable for consumer/industrial equipment where automotive reliability is not mandated | Select when cost sensitivity outweighs automotive qualification requirements and thermal derating margins allow |
| SMAJ7.0CAHE3_A/H | Same electrical specs but in smaller SMA (DO-214AC) package; higher RθJA (140 °C/W), lower IPPM (43.5 A) | Lower surge current capacity and reduced thermal margin; limited to lower-energy transient environments | Choose only if board space constraints prohibit SMB footprint and surge threat level is ≤40 A (10/1000 µs) |
Compared with SMBJ7.0CAHE3_B/H, SMBJ7.0CA-E3/52 offers identical clamping performance at lower cost but no automotive qualification, while SMAJ7.0CAHE3_A/H sacrifices surge robustness and thermal performance for compactness - making SMBJ7.0CAHE3_B/H the optimal choice for AEC-Q101–required, high-energy industrial and automotive applications.
Availability
SMBJ7.0CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, USB port hardening, and RS-485 communication lines requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ7.0CAHE3_B/H 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 SMBJ series is engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure - delivering robust clamping, AEC-Q101 compliance, and seamless SMT integration in demanding environments.
FAQ
What does the "HE3" suffix indicate in SMBJ7.0CAHE3_B/H?
The "HE3" suffix denotes that SMBJ7.0CAHE3_B/H is RoHS-compliant and AEC-Q101 qualified, distinguishing it from commercial-grade variants like SMBJ7.0CA-E3/52. This qualification ensures validated performance across automotive temperature ranges (-55 °C to +150 °C), mechanical shock, and humidity testing - confirming SMBJ7.0CAHE3_B/H for under-hood and chassis-mounted applications where reliability is mission-critical.
Is SMBJ7.0CAHE3_B/H unidirectional or bidirectional?
SMBJ7.0CAHE3_B/H is a bidirectional TVS diode, as confirmed by the "CA" suffix and documented electrical characteristics applying equally in both directions. Unlike unidirectional variants (e.g., SMBJ7.0A), it has no cathode band marking and provides symmetrical clamping for positive and negative transients - essential for protecting AC-coupled or floating signal lines such as RS-485 or Ethernet PHY interfaces.
What is the maximum clamping voltage of SMBJ7.0CAHE3_B/H and at what current is it specified?
The maximum clamping voltage of SMBJ7.0CAHE3_B/H is 12.0 V, measured at a peak pulse current (IPPM) of 50.0 A under the standardized 10/1000 µs waveform. This value is guaranteed across production lots and temperature extremes, defining the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces.
Can SMBJ7.0CAHE3_B/H be used in place of SMBJ7.0A in a design?
No - SMBJ7.0CAHE3_B/H is bidirectional while SMBJ7.0A is unidirectional, resulting in fundamentally different circuit behavior. Substituting SMBJ7.0CAHE3_B/H for SMBJ7.0A would eliminate polarity-dependent forward conduction and may compromise protection on DC-biased lines. Always verify signal topology: use SMBJ7.0CAHE3_B/H only where symmetrical clamping is required, such as AC signals or floating buses.
What PCB pad layout is recommended for optimal thermal and surge performance of SMBJ7.0CAHE3_B/H?
Vishay specifies mounting SMBJ7.0CAHE3_B/H on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and RθJA = 100 °C/W. Smaller pads increase thermal resistance and reduce surge current handling - potentially causing premature failure. For automotive designs, internal copper planes connected via multiple vias beneath each pad further improve heat dissipation and reliability under repeated surge stress.
SMBJ7.0CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ7.0CAHE3_B/H FAQ
1.How can I place an order for SMBJ7.0CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CAHE3_B/H 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 SMBJ7.0CAHE3_B/H reliable?
The price and inventory of SMBJ7.0CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CAHE3_B/H?
SMBJ7.0CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CAHE3_B/H 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 SMBJ7.0CAHE3_B/H?
For technical support, including SMBJ7.0CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ7.0CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CAHE3_B/H 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 SMBJ7.0CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CAHE3_B/H?
All SMBJ7.0CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CAHE3_B/H, 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 SMBJ7.0CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ7.0CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CAHE3_B/H 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
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 …
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…
