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Vishay General Semiconductor - Diodes Division SMBJ36CAHM3_B/H
- Part No.:
- SMBJ36CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CAHM3_B/H.pdf
- Description:
- 600W,36V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,698
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Product details
Overview
SMBJ36CAHM3_B/H 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 power and signal lines. It features a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 58.1 V maximum clamping voltage (VC) at 10.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial sensor interfaces and automotive ECUs.
For engineers reviewing the SMBJ36CAHM3_B/H datasheet, SMBJ36CAHM3_B/H pinout, SMBJ36CAHM3_B/H application, or SMBJ36CAHM3_B/H equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal derating curves, AEC-Q101 qualification status, and real-world surge protection use cases - all aligned to Vishay Document #88392 (Rev. 09-Jan-2024).
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while its low incremental surge resistance enables rapid energy absorption during ESD or lightning-induced surges.
Designed for surface-mount assembly on PCBs with 0.2" × 0.2" copper pads per terminal, it meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for 36 V nominal systems. |
| VBR (min/max) | 40.0 V / 44.2 V at 1 mA - Confirmed bidirectional breakdown window; ensures predictable turn-on across manufacturing lot and temperature. |
| VC @ IPPM | 58.1 V at 10.3 A - Clamped voltage under 600 W 10/1000 µs surge; limits downstream IC stress to sub-60 V during transients. |
| PPPM | 600 W - Peak pulse power handling capability; sustains repetitive 0.01% duty cycle surges without degradation. |
| IPPM | 10.3 A - Peak pulse current corresponding to 600 W into VC; used for PCB trace sizing and fuse coordination. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized 2-pin SMD outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and IR reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are functionally symmetrical; both leads serve as interchangeable surge current paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (negative polarity transient) | Accepts reverse-biased surge energy; forms one half of symmetrical clamping path. |
| Cathode | Surge current entry (positive polarity transient) | Accepts forward-biased surge energy; completes bidirectional clamping loop with Anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns - e.g., RS-485, CAN, or sensor differential pairs. |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted on 5 mm × 5 mm copper pads. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensors requiring extended temperature and lifetime reliability. |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental compliance mandates without compromising surge robustness or thermal performance. |
| MSL Level 1 moisture sensitivity | Allows indefinite floor life before reflow; eliminates baking requirements and simplifies SMT production planning. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protects microcontroller GPIO and LIN bus transceivers from load dump and alternator ripple in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional TVS clamps ±300 V transients to <60 V within <1 ns, preserving MCU I/O integrity. Use Value: Eliminates need for separate unidirectional devices on dual-rail sensor interfaces, reducing BOM count by 50% vs discrete solutions. |
Use Scenario: Shields 4–20 mA current-loop input stages from field wiring surges induced by motor contactor switching in factory automation cabinets. IC Role / Device Role / Timing Role: Acts as primary front-end clamp ahead of precision op-amps and ADC drivers, limiting fault voltage before protection ICs activate. Use Value: Maintains analog accuracy by preventing latch-up in instrumentation amplifiers during 1 kV/µs fast transients per IEC 61000-4-4. |
| Telecom Power Supply Rail Protection | Consumer Appliance Motor Drive Interface |
Use Scenario: Installed across +48 V DC telecom power inputs to suppress lightning-induced surges entering central office equipment. IC Role / Device Role / Timing Role: Fast-response TVS diverts >10 A surge current away from DC-DC converters and PMICs during line-to-ground events. Use Value: Achieves >99.9% uptime by preventing repeated power module failures in outdoor base station deployments. |
Use Scenario: Placed on H-bridge gate drive lines of washing machine motor controllers to absorb inductive kickback from brushed DC motors. IC Role / Device Role / Timing Role: Clamps voltage spikes to <60 V during MOSFET turn-off, preventing gate oxide rupture in half-bridge drivers. Use Value: Extends motor driver IC lifetime by suppressing >100 V spikes that would otherwise exceed absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CAHE3_B/H | Same electrical specs and SMB package, but RoHS-compliant commercial grade (non-halogen-free, non-AEC-Q101). | Lacks automotive qualification; suitable for industrial/commercial designs where halogen-free is not mandated. | Select when cost sensitivity outweighs halogen-free or automotive qualification requirements. |
| SAC36CA | Lower 400 W PPPM, same VWM/VC, DO-214AC (SMA) package - smaller footprint but higher thermal resistance (RθJA = 140 °C/W). | Not recommended for high-reliability automotive or high-duty-cycle industrial use due to reduced surge margin and thermal limits. | Choose only for space-constrained consumer applications with infrequent, low-energy transients. |
Compared with SMBJ36CAHM3_B/H, SMBJ36CAHE3_B/H offers identical protection performance without halogen-free or AEC-Q101 assurance, while SAC36CA trades 33% lower surge capacity and inferior thermal management for smaller board area - making SMBJ36CAHM3_B/H the optimal choice for mission-critical automotive and industrial deployments.
Availability
SMBJ36CAHM3_B/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for SMBJ36CAHM3_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 targets high-energy transient suppression in harsh environments, delivering standardized TVS performance across automotive, industrial, and telecom markets with validated AEC-Q101 and RoHS/halogen-free variants.
FAQ
What does the "CA" suffix mean in SMBJ36CAHM3_B/H?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ36CAHM3_B/H clamps voltage transients equally in both polarities, unlike unidirectional "A" versions which protect only one polarity. This makes SMBJ36CAHM3_B/H ideal for AC-coupled lines, differential buses, or floating grounds where polarity reversal may occur during surge events.
Is SMBJ36CAHM3_B/H qualified for automotive applications?
Yes - the "HM3" suffix confirms SMBJ36CAHM3_B/H is halogen-free, RoHS-compliant, and AEC-Q101 qualified per Vishay's automotive product line. It has undergone stress testing for temperature cycling, humidity, mechanical shock, and surge endurance required for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage of SMBJ36CAHM3_B/H at rated surge current?
The maximum clamping voltage (VC) of SMBJ36CAHM3_B/H is 58.1 V at 10.3 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed across temperature and process variation, ensuring downstream circuitry remains below critical overvoltage thresholds during surge events.
How does SMBJ36CAHM3_B/H differ from SMBJ36A variants?
SMBJ36CAHM3_B/H is bidirectional with symmetrical clamping, whereas SMBJ36A is unidirectional and features a cathode band marking. Electrically, SMBJ36A has a forward voltage drop (~3.5 V at 50 A) and handles 100 A IFSM, while SMBJ36CAHM3_B/H has no forward conduction path and is rated only for bidirectional surge suppression - making them functionally non-interchangeable.
What PCB layout guidance applies to SMBJ36CAHM3_B/H for optimal surge performance?
For full 600 W rating, Vishay specifies mounting SMBJ36CAHM3_B/H on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, with short, wide traces to minimize inductance. Thermal vias under pads are recommended for sustained surge duty cycles, and ground planes must remain uninterrupted beneath the device to maintain low-impedance return paths during transient events.
SMBJ36CAHM3_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:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMBJ36CAHM3_B/H FAQ
1.How can I place an order for SMBJ36CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CAHM3_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 SMBJ36CAHM3_B/H reliable?
The price and inventory of SMBJ36CAHM3_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 SMBJ36CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ36CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CAHM3_B/H?
SMBJ36CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CAHM3_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 SMBJ36CAHM3_B/H?
For technical support, including SMBJ36CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CAHM3_B/H requirements.
6.How does Aetrix verify that SMBJ36CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ36CAHM3_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 SMBJ36CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ36CAHM3_B/H?
All SMBJ36CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CAHM3_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 SMBJ36CAHM3_B/H part is unused and in its original packaging.
Return procedure for SMBJ36CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36CAHM3_B/H Tags
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