My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J36CAHE3_B/H
- Part No.:
- SMB8J36CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J36CAHE3_B/H.pdf
- Description:
- 800W,36V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,866
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J36CAHE3_B/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 58.1 V maximum clamping voltage (VC) at 13.8 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J36CAHE3_B/H datasheet, SMB8J36CAHE3_B/H pinout, SMB8J36CAHE3_B/H application, or SMB8J36CAHE3_B/H equivalent, key selection criteria include AEC-Q101 qualification, bidirectional clamping behavior, low clamping ratio (VC/VBR ≈ 1.39), thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector, responding within <1 ps to transients per IEEE C62.35 standards. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the bidirectional architecture enables symmetric suppression of positive and negative surges without polarity sensitivity.
Thermally, it sustains operation from −55 °C to +150 °C junction temperature, with derating above 25 °C per Figure 2. The SMB package supports MSL Level 1 handling (peak reflow 260 °C) and meets UL 94 V-0 flammability requirements - critical for under-hood automotive modules and industrial control PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins; defines safe signal line bias margin |
| VBR min/max | 40.0 V / 44.2 V at 1 mA - tight breakdown tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 58.1 V at 13.8 A - clamping voltage limits downstream IC stress during 10/1000 µs surge events |
| PPPM | 800 W - peak power dissipation capability with 10/1000 µs waveform; validates robustness against ISO 7637-2 Pulse 1/2/5a |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity in high-impedance sensor circuits |
| TJ max | +150 °C - enables deployment in engine control units and motor drive enclosures without derating penalties |
| RθJL | 20 °C/W - low junction-to-lead thermal resistance supports reliable power dissipation into PCB copper |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical cathode/anode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Surge current entry (negative transient) | Shunts negative voltage excursions to ground; identical electrical role as Terminal 2 under positive transients |
| Cathode (Terminal 2) | Surge current entry (positive transient) | Shunts positive voltage excursions to ground; functionally interchangeable with Terminal 1 due to bidirectional symmetry |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for CAN/LIN bus nodes and ADAS sensors |
| Glass-passivated junction | Eliminates moisture-induced parameter drift and improves long-term stability in humid environments (e.g., EV battery management systems) |
| MSL Level 1 rating | Enables single-pass reflow without baking; compatible with standard J-STD-020-compliant SMT lines |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation prevents flame propagation in safety-critical control modules |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and JESD 22-B102; eliminates whisker risk per JESD 201 Class 2 |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and temperature/pressure sensors in engine compartments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional shunt TVS placed between signal line and chassis ground, clamping transients before they reach the sensor ASIC. Use Value: Maintains signal fidelity below 58.1 V clamping threshold during 13.8 A surges - preventing latch-up or gate oxide damage in 3.3 V/5 V sensor front-ends. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers subjected to inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side inputs, coordinated with series impedance to limit current into optocoupler input stages. Use Value: Withstands repeated 800 W surges without degradation, enabling >100,000 switching cycles in factory automation equipment. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers in base station remote units from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: First-line transient suppressor on differential pair, placed before common-mode choke to reduce energy entering signal conditioning circuitry. Use Value: 58.1 V clamping voltage ensures transceiver remains within absolute maximum ratings even during 1 kV/1.2 µs × 50 µs composite surges. | Use Scenario: Protecting microcontroller GPIOs driving brushed DC motors in smart home appliances (e.g., washing machine drum control). IC Role / Device Role / Timing Role: Localized TVS at motor driver output stage, suppressing commutation spikes before they couple into MCU supply rails. Use Value: Low 20 °C/W junction-to-lead thermal resistance enables rapid heat transfer to PCB copper, sustaining surge duty cycles up to 1 Hz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J36CAHM3_B/H | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification | Required where halogen-free compliance is mandated (e.g., EU WEEE, specific OEM Tier 1 specs) | Select when environmental compliance outweighs minor cost premium; same footprint and assembly process |
| SMBJ36CAHE3_A/H | Same VWM/VBR/VC specs but rated for 600 W PPPM (vs. 800 W); uses identical SMB package | Suitable for lower-energy threat environments (e.g., non-automotive consumer I/O) where full 800 W margin is unnecessary | Choose for cost-sensitive designs with verified surge profiles ≤600 W; not recommended for AEC-Q101-requiring applications |
Compared with SMB8J36CAHE3_B/H, the HM3 variant adds halogen-free assurance without performance trade-offs, while the SMBJ36CAHE3_A/H reduces peak power rating by 25 % - making it appropriate only where system-level surge testing confirms sub-800 W threats.
Availability
SMB8J36CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface circuits requiring stable component supply, AEC-Q101 traceability, and consistent surge performance across production batches.
Supply support for SMB8J36CAHE3_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, MOSFETs, optoelectronics, and passive components - with emphasis on high-reliability, high-efficiency solutions for demanding environments.
The SMB8JxxCA family targets automotive and industrial transient suppression, engineered specifically to meet AEC-Q101 stress tests and deliver repeatable clamping performance under thermal and electrical cycling - unlike generic commercial TVS diodes.
FAQ
What is the clamping voltage of SMB8J36CAHE3_B/H at its rated peak pulse current?
The SMB8J36CAHE3_B/H has a maximum clamping voltage (VC) of 58.1 V at 13.8 A peak pulse current (IPPM), measured with a 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet revision 09-Jan-2024 (Document Number: 88422), ensuring predictable overvoltage limiting for protected ICs. The SMB8J36CAHE3_B/H maintains this clamping performance across its full operating temperature range.
Is SMB8J36CAHE3_B/H suitable for automotive applications?
Yes, SMB8J36CAHE3_B/H is AEC-Q101 qualified and explicitly designated for automotive use via its HE3 suffix and "automotive ordering code" designation in the Vishay datasheet. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD - making it appropriate for engine control, body electronics, and ADAS sensor protection. The SMB8J36CAHE3_B/H meets all requirements for under-hood deployment up to +150 °C junction temperature.
What does the "_B/H" suffix mean in SMB8J36CAHE3_B/H?
The "_B/H" suffix in SMB8J36CAHE3_B/H indicates packaging configuration: "B" denotes tape-and-reel format per EIA-481, and "H" specifies a 7-inch diameter reel containing 750 units. This matches the preferred package code "H" listed in the Vishay ordering information table. The SMB8J36CAHE3_B/H is supplied in RoHS-compliant, matte tin-plated leads and meets JESD 201 Class 2 whisker resistance requirements.
How does SMB8J36CAHE3_B/H differ from unidirectional variants like SMB10J36AHE3_B/H?
The SMB8J36CAHE3_B/H is bidirectional with symmetrical clamping for both polarities, whereas SMB10J36AHE3_B/H is unidirectional and requires correct cathode orientation. Electrically, SMB8J36CAHE3_B/H offers 800 W PPPM and 13.8 A IPPM, while SMB10J36AHE3_B/H delivers 1000 W PPPM and 17.2 A IPPM - reflecting higher surge capacity in the unidirectional version. The SMB8J36CAHE3_B/H is preferred where polarity uncertainty exists, such as differential bus lines.
What is the thermal resistance from junction to lead (RθJL) for SMB8J36CAHE3_B/H?
The SMB8J36CAHE3_B/H has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, as specified in the Vishay thermal characteristics table. This low value enables efficient heat transfer from the silicon die to the PCB copper pads, supporting reliable operation during repetitive surge events. When mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, the SMB8J36CAHE3_B/H achieves optimal thermal performance without heatsinking.
SMB8J36CAHE3_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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 36V
- Current - Peak Pulse (10/1000µs):
- 13.8A
- Power - Peak Pulse:
- 800W
- 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)
SMB8J36CAHE3_B/H FAQ
1.How can I place an order for SMB8J36CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J36CAHE3_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 SMB8J36CAHE3_B/H reliable?
The price and inventory of SMB8J36CAHE3_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 SMB8J36CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMB8J36CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J36CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J36CAHE3_B/H?
SMB8J36CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J36CAHE3_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 SMB8J36CAHE3_B/H?
For technical support, including SMB8J36CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J36CAHE3_B/H requirements.
6.How does Aetrix verify that SMB8J36CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMB8J36CAHE3_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 SMB8J36CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMB8J36CAHE3_B/H?
All SMB8J36CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J36CAHE3_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 SMB8J36CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMB8J36CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J36CAHE3_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
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 …
