My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ7.0CAHE3/5B
;;2.jpg)
- Part No.:
- SMBJ7.0CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CAHE3/5B.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,630
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ7.0CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 7.0 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), and clamps to ≤12.0 V at 50.0 A peak pulse current - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the SMBJ7.0CAHE3/5B datasheet, SMBJ7.0CAHE3/5B pinout, SMBJ7.0CAHE3/5B application, or SMBJ7.0CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, 12.0 V max clamping voltage at rated IPPM, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 6.40–7.07 V (min/max) under 10 mA test current. Its low clamping ratio (VC/VWM ≈ 1.71) ensures effective overvoltage limiting without excessive voltage overshoot during transient events.
The device meets MSL Level 1 per J-STD-020, supports peak surge current up to 50.0 A (10/1000 µs), and exhibits a temperature coefficient of VBR of +0.065 %/°C - enabling stable performance across -55 °C to +150 °C operating junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.0 V - maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 6.40–7.07 V at IT = 10 mA - precise voltage at which avalanche conduction initiates in either polarity |
| VC (Clamping Voltage) | ≤12.0 V at IPPM = 50.0 A - peak voltage seen by protected circuit during worst-case 10/1000 µs surge |
| PPPM (Peak Pulse Power) | 600 W - maximum transient energy absorption capability under standardized 10/1000 µs waveform |
| IPPM (Peak Pulse Current) | 50.0 A - maximum non-repetitive surge current the device can safely divert without degradation |
| RθJA (Thermal Resistance) | 100 °C/W - junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; critical for thermal design margining |
| TJmax | +150 °C - maximum allowable junction temperature; enables operation in under-hood automotive environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path (bidirectional) | Either terminal serves as input/output for surge current; no cathode band marking required for CA variants |
| Case (body) | Thermal and mechanical interface | Plastic molded case with UL 94 V-0 rating; transfers heat to PCB copper pads via soldered leads |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| 600 W peak pulse power (10/1000 µs) | Robust protection against ISO 7637-2 pulse 1, 2a, 3a/b and IEC 61000-4-5 surge events |
| Low clamping voltage (12.0 V @ 50 A) | Minimizes stress on downstream ICs such as CAN transceivers or microcontrollers operating at 5 V or 3.3 V rails |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without moisture sensitivity concerns |
| Glass passivated junction | Ensures long-term reliability and stable VBR performance under thermal cycling and humidity exposure |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control units from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, responding within <1 ps to suppress spikes above 7.0 V. Use Value: Prevents latch-up or permanent damage to 12-bit ADC inputs and op-amp front-ends while maintaining signal integrity below VWM. |
Use Scenario: Shielding digital input channels on programmable logic controllers from ESD and surge coupling via field wiring. IC Role / Device Role / Timing Role: Fast-acting shunt protector installed at connector entry point, clamping transients before reaching isolation barrier or microcontroller GPIO. Use Value: Enables compliance with IEC 61000-4-2 (±8 kV contact) and IEC 61000-4-4 (±2 kV) immunity requirements without additional filtering. |
| Telecom Line Interface | Consumer USB Port Protection |
|
Use Scenario: Safeguarding RS-485 transceiver pins in base station backhaul equipment exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level TVS connected line-to-line and line-to-ground, absorbing multi-kA surges per IEC 61000-4-5 Combination Wave (1.2/50 µs + 8/20 µs). Use Value: Limits induced voltage to <12.0 V during 50 A surge, preserving transceiver functionality and avoiding bus lockup. |
Use Scenario: Adding secondary-level surge protection on USB 2.0 D+/D− lines in smart home hubs subjected to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) bidirectional clamp placed after common-mode choke, suppressing ±15 kV HBM ESD events. Use Value: Maintains signal rise time integrity while preventing gate oxide rupture in USB PHY transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA-M3/5B | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU public infrastructure projects) | Direct drop-in replacement for SMBJ7.0CAHE3/5B when halogen-free content is required |
| SMCJ7.0CAHE3/5B | Same VWM/VC, but in larger SMC (DO-214AB) package with 1500 W PPPM and lower RθJA (50 °C/W) | Higher surge handling capacity and better thermal performance; requires larger PCB footprint | Preferred where system-level surge testing exceeds 600 W or ambient temperatures exceed 105 °C |
Compared with SMBJ7.0CA-M3/5B, SMBJ7.0CAHE3/5B offers identical protection performance with standard RoHS compliance; versus SMCJ7.0CAHE3/5B, it trades higher surge rating and thermal margin for compact SMB footprint - making SMBJ7.0CAHE3/5B optimal for space-constrained automotive and industrial PCBs requiring AEC-Q101 validation.
Availability
SMBJ7.0CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line surge suppression requiring stable component supply, AEC-Q101 traceability, and consistent lot-to-lot clamping performance.
Supply support for SMBJ7.0CAHE3/5B 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, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive ECUs, industrial automation, and communications infrastructure where failure tolerance and long-term stability are critical.
FAQ
What does the "CA" suffix indicate in SMBJ7.0CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ7.0CAHE3/5B provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional "A" variants, it has no cathode marking and functions identically regardless of polarity applied across its terminals, making it ideal for AC-coupled or differential signal lines.
Is SMBJ7.0CAHE3/5B qualified to AEC-Q101?
Yes, SMBJ7.0CAHE3/5B is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3". This qualification validates its reliability for automotive applications including under-hood environments, with testing covering temperature cycling, humidity bias, and accelerated life stress. The "HE3" designation explicitly indicates AEC-Q101 compliance per the manufacturer's ordering information table.
What is the maximum clamping voltage of SMBJ7.0CAHE3/5B at rated surge current?
The maximum clamping voltage (VC) of SMBJ7.0CAHE3/5B is 12.0 V at 50.0 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and represents the highest voltage the protected circuit will experience during a worst-case transient event handled by SMBJ7.0CAHE3/5B.
How does SMBJ7.0CAHE3/5B differ from SMBJ7.0AHE3/5B?
SMBJ7.0CAHE3/5B is bidirectional with symmetrical clamping behavior, while SMBJ7.0AHE3/5B is unidirectional and features a cathode band marking. The unidirectional version conducts only during reverse-bias overvoltage and blocks forward current - making it suitable for DC power rail protection. SMBJ7.0CAHE3/5B is preferred for AC signals, data lines, or any application where polarity reversal must be suppressed on both half-cycles.
What PCB pad layout is recommended for optimal thermal performance of SMBJ7.0CAHE3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal of SMBJ7.0CAHE3/5B to achieve the rated RθJA of 100 °C/W. Using smaller pads increases thermal resistance, reducing surge current derating capability - especially critical in high-temperature environments like automotive under-hood applications where SMBJ7.0CAHE3/5B must sustain repeated transients without thermal runaway.
SMBJ7.0CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ7.0CAHE3/5B FAQ
1.How can I place an order for SMBJ7.0CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CAHE3/5B 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 SMBJ7.0CAHE3/5B reliable?
The price and inventory of SMBJ7.0CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CAHE3/5B?
SMBJ7.0CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CAHE3/5B 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 SMBJ7.0CAHE3/5B?
For technical support, including SMBJ7.0CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CAHE3/5B requirements.
6.How does Aetrix verify that SMBJ7.0CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CAHE3/5B 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 SMBJ7.0CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CAHE3/5B?
All SMBJ7.0CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CAHE3/5B, 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 SMBJ7.0CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ7.0CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CAHE3/5B 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 …
