My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ75AHE3_A/H
;;2.jpg)
- Part No.:
- SMBJ75AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75AHE3_A/H.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,450
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ75AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on DC power rails and signal lines. It features a 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 121 V maximum clamping voltage (VC) at 5.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ75AHE3_A/H datasheet, SMBJ75AHE3_A/H pinout, SMBJ75AHE3_A/H application, or SMBJ75AHE3_A/H equivalent, this part delivers AEC-Q101 qualified surge protection with RoHS-compliant matte tin-plated leads, MSL Level 1 moisture sensitivity, and validated thermal resistance (RθJA = 100 °C/W) for reliable placement in automotive and industrial PCB layouts.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation, it remains high-impedance until transient voltage exceeds VWM (75 V), then avalanches to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM).
It is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports operating junction temperatures from –55 °C to +150 °C, and exhibits a positive temperature coefficient of VBR (+0.106 %/°C), enabling predictable derating in elevated ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 75 V systems. |
| VBR @ IT = 1 mA | 83.3–92.1 V - Breakdown voltage range confirming tight tolerance; ensures consistent triggering across production lots. |
| VC @ IPPM = 5.0 A | 121 V - Clamped voltage under 10/1000 µs surge; limits stress on downstream 100 V-rated components. |
| PPPM | 600 W - Peak pulse power handling capability; sustains transient energy without failure per JEDEC standard waveform. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports protection against inductive switch-off events in motor drives. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs heatsinking requirements. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-temperature industrial enclosures. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during overvoltage events. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 75 V rail); avalanche conduction occurs from cathode to anode when VWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability under thermal cycling and vibration. |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from relay switching or load dump without degradation, supporting IEC 61000-4-5 compliance testing. |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-induced cracking or delamination. |
| Glass passivated junction | Provides stable VBR tolerance and low leakage (<1.0 µA) over lifetime, critical for long-term field reliability in sealed systems. |
| Unidirectional polarity | Optimized for DC rail protection where reverse conduction is not required; avoids unnecessary capacitance on bidirectional signal lines. |
Applications
| Industrial Power Supply Protection | Automotive Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: Protecting 75 V auxiliary power rails in programmable logic controller (PLC) backplanes against inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between rail and ground, activated within <1 ns of overvoltage onset. Use Value: Limits transient voltage to ≤121 V, preventing latch-up or gate oxide damage in 100 V-rated MOSFETs and PMICs. |
Use Scenario: Safeguarding CAN transceiver power inputs in engine control modules exposed to ISO 7637-2 Pulse 1 and Pulse 2b load dump events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 75 V battery-fed subsystem rails, coordinated with upstream fuses and secondary filtering. Use Value: Withstands 100 A surge (8.3 ms) and maintains clamping performance after thermal cycling per AEC-Q101 requirements. |
| Telecom DC-DC Converter Input | Sensor Signal Line Protection |
|
Use Scenario: Guarding input stage of isolated 75 V → 12 V DC-DC converters in base station power distribution units. IC Role / Device Role / Timing Role: First-line transient suppressor on primary-side HV input, placed before EMI filter and converter controller. Use Value: 600 W pulse rating absorbs lightning-induced surges (IEC 61000-4-5 Level 3), reducing need for multi-stage protection. |
Use Scenario: Shielding analog output lines of pressure sensors in hydraulic control systems operating near 75 V actuator supplies. IC Role / Device Role / Timing Role: Localized TVS mounted directly at connector interface to minimize inductance and improve clamping response. Use Value: Low incremental surge resistance ensures minimal voltage overshoot (<121 V) during fast-rising transients from nearby motor commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75AHM3_A/H | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated by OEM environmental policy. | Direct substitution if halogen-free bill-of-materials is required; same footprint, thermal, and electrical behavior. |
| SMCJ75AHE3_A/H | Same VWM/VC but in larger SMC (DO-214AB) package; 1500 W PPPM, RθJA = 50 °C/W. | Higher power handling and lower thermal resistance; suited for higher-energy transients or less optimal PCB copper area. | Choose when system-level surge testing exceeds 600 W or when ambient temperature exceeds 85 °C with limited heatsinking. |
Compared with SMBJ75AHE3_A/H, the HM3 variant offers identical protection performance with halogen-free construction, while the SMCJ75AHE3_A/H provides 2.5× higher pulse power and better thermal dissipation at the cost of increased board area - enabling design flexibility across reliability, environmental, and energy-class requirements.
Availability
SMBJ75AHE3_A/H is available at Aetrix Electronics and suitable for industrial power supply protection, automotive ECU designs, telecom DC-DC converter inputs, and sensor signal line safeguarding requiring stable component supply across extended production lifecycles.
Supply support for SMBJ75AHE3_A/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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific validation.
The SMBJ series was developed for robust, surface-mount transient suppression in automotive, industrial, and telecom infrastructure - prioritizing AEC-Q101 qualification, high pulse power density, and automated assembly compatibility.
FAQ
What is the clamping voltage of SMBJ75AHE3_A/H at its rated peak pulse current?
The SMBJ75AHE3_A/H has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ75AHE3_A/H maintains this clamping performance across its full operating temperature range and after repeated surge exposure per AEC-Q101 stress testing.
Is SMBJ75AHE3_A/H suitable for automotive applications?
Yes, SMBJ75AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix "HE3". It meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge endurance - making it appropriate for engine control units, body control modules, and ADAS power domains. The SMBJ75AHE3_A/H also complies with MSL Level 1 for lead-free reflow and uses matte tin-plated leads qualified per JESD 22-B102.
How does the SMBJ75AHE3_A/H differ from bidirectional TVS diodes like SMBJ75CA?
The SMBJ75AHE3_A/H is unidirectional and functions only during reverse overvoltage events, with a defined cathode band for correct PCB orientation. In contrast, SMBJ75CA is bidirectional and clamps in both polarities - suitable for AC lines or differential signals. The SMBJ75AHE3_A/H offers lower leakage (<1.0 µA at 75 V) and avoids capacitance doubling, making it preferred for DC rail protection where polarity is fixed and low standby current matters.
What is the thermal resistance of SMBJ75AHE3_A/H, and how does it affect layout?
The SMBJ75AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay specification; reducing pad size or omitting thermal vias increases RθJA, potentially limiting surge repetition rate or derating peak power. For sustained operation above 85 °C ambient, the SMBJ75AHE3_A/H requires careful thermal design to avoid exceeding +150 °C junction temperature.
Can SMBJ75AHE3_A/H be used in place of SMBJ70AHE3_A/H or SMBJ85AHE3_A/H?
No - SMBJ75AHE3_A/H is not a direct replacement for SMBJ70AHE3_A/H or SMBJ85AHE3_A/H due to different stand-off voltages (VWM = 75 V vs. 70 V or 85 V) and corresponding breakdown ranges. Substituting alters the clamping threshold and may cause premature conduction (at 70 V) or insufficient protection (at 85 V). Each SMBJ75AHE3_A/H must be selected based on exact system rail voltage and margin requirements; cross-voltage substitution requires full electrical validation.
SMBJ75AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 5A
- 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)
SMBJ75AHE3_A/H FAQ
1.How can I place an order for SMBJ75AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75AHE3_A/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 SMBJ75AHE3_A/H reliable?
The price and inventory of SMBJ75AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ75AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75AHE3_A/H?
SMBJ75AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75AHE3_A/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 SMBJ75AHE3_A/H?
For technical support, including SMBJ75AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ75AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ75AHE3_A/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 SMBJ75AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ75AHE3_A/H?
All SMBJ75AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75AHE3_A/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 SMBJ75AHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ75AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75AHE3_A/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
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 …
