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Vishay General Semiconductor - Diodes Division SMBJ36CA-M3/5B
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- Part No.:
- SMBJ36CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CA-M3/5B.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,639
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Product details
Overview
SMBJ36CA-M3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal 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 10.3 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ36CA-M3/5B datasheet, SMBJ36CA-M3/5B pinout, SMBJ36CA-M3/5B application, or SMBJ36CA-M3/5B equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.61), halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and IPPM specifications for positive and negative transients. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ps), enabling protection against ESD, lightning-induced surges, and inductive switching spikes.
The device is rated for TJ = –55 °C to +150 °C, has a thermal resistance of 100 °C/W (junction-to-ambient, on recommended pad layout), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is not AEC-Q101 qualified (no HE3/HM3 suffix), distinguishing it from automotive-grade variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min/max | 40.0 V / 44.2 V at 1 mA - guaranteed breakdown threshold range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 58.1 V at 10.3 A - clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 600 W - peak pulse power handling with 0.01% duty cycle; supports repetitive surge events in industrial environments. |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage at stand-off voltage; avoids parasitic loading on high-impedance sensor or bias lines. |
| Package | SMB (DO-214AA) - 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint; optimized for automated pick-and-place and thermal dissipation on 5.0 mm × 5.0 mm copper pads. |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); UL 94 V-0 molding compound; JESD201 Class 2 whisker resistance. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals with cathode/anode indistinguishable in function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve identically as surge current entry/exit points; enables bidirectional clamping without orientation constraints on PCB. |
| Case (cathode band absent) | Non-functional marking | No band or marking - confirms bidirectional construction; eliminates risk of incorrect orientation during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - protects AC-coupled or floating signal lines without polarity sensitivity. |
| 600 W peak pulse power | Handles 10/1000 µs transients up to 10.3 A - sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge testing on 24 V industrial buses. |
| Low clamping ratio | VC/VWM = 1.61 - minimizes overvoltage stress on downstream 3.3 V or 5 V logic while maintaining noise margin. |
| Halogen-free & RoHS | M3 suffix - satisfies environmental compliance for global industrial equipment without compromising thermal or electrical performance. |
| MSL Level 1 rating | 260 °C peak reflow tolerance - supports standard lead-free SMT processes without pre-baking or special handling. |
Applications
| Industrial Power Supply Protection | Automated Test Equipment (ATE) Signal Line Guarding |
|---|---|
|
Use Scenario: 24 V DC input rail in PLC power modules exposed to relay coil flyback and motor drive coupling. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to clamp ±1 kV surges before they reach upstream DC/DC converter ICs. Use Value: Limits transient voltage to ≤58.1 V, preventing latch-up or gate oxide damage in 40 V-rated input-stage MOSFETs and controllers. |
Use Scenario: Analog sensor inputs (e.g., 4–20 mA loops) in rack-mounted ATE systems subject to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) TVS shunting transients directly at connector interface, preserving signal integrity for precision ADC front-ends. Use Value: Maintains <1 µA reverse leakage at 36 V, avoiding offset errors in µA-level current measurement paths. |
| Telecom Interface Surge Shielding | Motor Drive Control Board Transient Suppression |
|
Use Scenario: RS-485 data lines in outdoor telecom cabinets experiencing induced lightning surges via long cable runs. IC Role / Device Role / Timing Role: Paired SMBJ36CA-M3/5B devices (line-to-line and line-to-ground) providing symmetrical clamping for differential bus protection. Use Value: Matches bidirectional signaling requirements of RS-485 PHYs while sustaining 600 W pulses without degradation over 10⁵ surge events. |
Use Scenario: Gate drive signal traces between microcontroller and half-bridge MOSFETs in HVAC inverter boards. IC Role / Device Role / Timing Role: Localized TVS on gate resistor nodes to suppress Miller-induced voltage spikes during high dV/dt switching transitions. Use Value: Sub-nanosecond response time prevents false turn-on of high-side FETs, eliminating shoot-through risk in 20 kHz PWM operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA-E3/5B | Same electrical specs, but RoHS-compliant with brominated flame retardant (non-halogen-free); base P/N-E3 vs. M3. | Acceptable where halogen-free requirement is not mandated (e.g., non-EU commercial equipment). | Select SMBJ36CA-E3/5B if cost optimization is prioritized and halogen-free certification is not required by end-customer spec. |
| SMAJ36CA-M3 | Lower 400 W peak pulse power (vs. 600 W), smaller SMA (DO-214AC) package (4.5 mm × 2.7 mm), higher RθJA (140 °C/W). | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD) or space-constrained layouts where 600 W is not needed. | Choose SMAJ36CA-M3 only when board area is critical and surge threat level is limited to Class 2/3 ESD or low-duty-cycle switching noise. |
Compared with SMBJ36CA-E3/5B, the SMBJ36CA-M3/5B offers halogen-free compliance without sacrificing electrical performance; versus SMAJ36CA-M3, it delivers 50% higher surge energy handling and superior thermal dissipation - making it the preferred choice for industrial 24 V bus and motor control protection where reliability under repetitive surges is essential.
Availability
SMBJ36CA-M3/5B is available at Aetrix Electronics and suitable for industrial power supply protection, telecom interface shielding, motor drive transient suppression, and automated test equipment requiring stable component supply and full halogen-free compliance.
Supply support for SMBJ36CA-M3/5B 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 diodes, rectifiers, and protection devices with emphasis on reliability, thermal performance, and application-specific validation.
The SMBJ series was engineered for robust transient suppression in harsh industrial and telecom environments, balancing high surge capacity, low clamping voltage, and SMT manufacturability - targeting designers of 12–48 V DC systems needing repeatable, field-proven protection.
FAQ
What is the clamping voltage of SMBJ36CA-M3/5B at its rated peak pulse current?
The SMBJ36CA-M3/5B has a maximum clamping voltage (VC) of 58.1 V at its rated peak pulse current (IPPM) of 10.3 A, measured using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ36CA-M3/5B maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is SMBJ36CA-M3/5B suitable for bidirectional signal line protection?
Yes, SMBJ36CA-M3/5B is explicitly designed for bidirectional protection: its CA suffix denotes symmetrical breakdown and clamping characteristics in both polarities, with identical VBR, VC, and IPPM values regardless of voltage polarity. This makes the SMBJ36CA-M3/5B ideal for protecting AC-coupled interfaces like RS-485, CAN, or audio lines where transient polarity cannot be assumed - and eliminates the need for dual unidirectional devices.
Does SMBJ36CA-M3/5B meet automotive qualification standards?
No, SMBJ36CA-M3/5B is not AEC-Q101 qualified. It carries the M3 suffix indicating halogen-free RoHS compliance for commercial/industrial use, but lacks the HE3 or HM3 suffix required for automotive-grade variants. For automotive applications, designers must select SMBJ36CA-HE3_B/I or SMBJ36CA-HM3_B/I, which undergo additional stress testing and lot traceability per AEC-Q101. The SMBJ36CA-M3/5B remains appropriate for industrial, telecom, and consumer equipment where AEC-Q101 is not mandated.
What is the thermal resistance of SMBJ36CA-M3/5B under standard mounting conditions?
The SMBJ36CA-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay Document 88392. This value assumes no additional heatsinking and defines the steady-state temperature rise under continuous 5.0 W power dissipation. For pulsed surge conditions, transient thermal impedance is significantly lower, allowing the SMBJ36CA-M3/5B to absorb 600 W peaks without thermal failure.
How does the M3 suffix affect the environmental compliance of SMBJ36CA-M3/5B?
The M3 suffix on SMBJ36CA-M3/5B certifies that the device is both RoHS-compliant and halogen-free - meaning it contains no brominated or chlorinated flame retardants, and meets IEC 61249-2-21 requirements for printed wiring board material restrictions. This distinguishes it from the E3-suffixed variant (RoHS-compliant but not halogen-free) and ensures compliance with strict environmental regulations in EU, Japan, and other regulated markets. The SMBJ36CA-M3/5B achieves this without degrading electrical specs, thermal performance, or reliability.
SMBJ36CA-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ36CA-M3/5B FAQ
1.How can I place an order for SMBJ36CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CA-M3/5B 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 SMBJ36CA-M3/5B reliable?
The price and inventory of SMBJ36CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ36CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CA-M3/5B?
SMBJ36CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CA-M3/5B 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 SMBJ36CA-M3/5B?
For technical support, including SMBJ36CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ36CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ36CA-M3/5B 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 SMBJ36CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ36CA-M3/5B?
All SMBJ36CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CA-M3/5B, 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 SMBJ36CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ36CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36CA-M3/5B Tags
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