My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ13CAHM3_A/I
- Part No.:
- SMBJ13CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13CAHM3_A/I.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,390
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ13CAHM3_A/I 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 and power lines. It features a 13 V standoff voltage (VWM), 14.4–15.9 V breakdown voltage (VBR) at 1 mA, 21.5 V maximum clamping voltage (VC) at 27.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ13CAHM3_A/I datasheet, SMBJ13CAHM3_A/I pinout, SMBJ13CAHM3_A/I application, or SMBJ13CAHM3_A/I equivalent, key selection criteria include bidirectional transient suppression capability, 13 V operating voltage compatibility, SMB package thermal performance (RθJA = 100 °C/W), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche breakdown in both directions, enabling robust protection of AC-coupled or floating signal paths without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ps), critical for suppressing ESD and inductive switching spikes.
The SMBJ13CAHM3_A/I meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), supports automated SMT placement, and delivers 600 W surge handling under repetitive 0.01% duty cycle conditions when mounted on 5.0 mm × 5.0 mm copper pads - validated per Fig. 2 derating curves in the Vishay datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13 V - Maximum continuous reverse voltage before conduction begins; defines operating margin for 12 V nominal systems. |
| VBR (Breakdown Voltage) | 14.4–15.9 V at 1 mA - Guaranteed avalanche initiation range; ensures reliable triggering above system operating voltage. |
| VC (Clamping Voltage) | 21.5 V at 27.9 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capacity; enables protection against IEC 61000-4-5 Level 4 surges. |
| IPPM (Peak Pulse Current) | 27.9 A - Maximum non-repetitive surge current handled at rated clamping voltage; determines PCB trace sizing and layout robustness. |
| TJmax | 150 °C - Maximum junction temperature; sets thermal design limit for sustained power dissipation and ambient derating. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function identically as anode and cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal conducts during positive or negative transients; no fixed polarity - enables AC line or differential signal protection without orientation constraints. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; dual-terminal symmetry allows flexible PCB routing and eliminates assembly orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled interfaces (e.g., RS-485, CAN bus, audio lines) without external polarity management. |
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly designed layouts with 5 mm² copper pads. |
| Halogen-free, RoHS-compliant (HM3 suffix) | Fulfills environmental compliance for automotive and industrial end-equipment; passes JESD201 Class 2 whisker resistance testing. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile usage (peak 260 °C) without baking - reduces manufacturing overhead. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >15 kV), improving protection margin for sensitive CMOS inputs. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting analog output lines (4–20 mA) and digital I/O pins of pressure/temperature sensors exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor supply and ground, or between signal and reference rail. Use Value: Limits transient excursions to ≤21.5 V during 27.9 A surges, preventing latch-up or gate oxide damage in connected ADCs and microcontrollers. |
Use Scenario: Safeguarding LIN bus transceivers and GPIOs in door module ECUs subjected to load dump and jump-start events. IC Role / Device Role / Timing Role: Parallel-connected TVS on LIN data line and VBAT-to-ground path to suppress coupled transients from alternator regulation faults. Use Value: Clamps 13 V nominal bus to 21.5 V during 600 W surges, maintaining signal integrity while meeting ISO 16750-2 pulse 5a requirements. |
| Telecom Power Input Stage | Consumer USB-C Port Protection |
|
Use Scenario: Front-end surge suppression on 12 V DC input rails of PoE-powered access points and base stations. IC Role / Device Role / Timing Role: Primary clamping device placed immediately after input connector, upstream of DC-DC converters and hot-swap controllers. Use Value: Absorbs 600 W pulses without degradation, reducing need for secondary MOVs or gas discharge tubes in space-constrained designs. |
Use Scenario: Overvoltage protection on VBUS and CC lines of USB-C receptacles exposed to accidental 20 V adapter misconnection or ESD. IC Role / Device Role / Timing Role: Bidirectional clamp on CC1/CC2 pins and VBUS rail to prevent damage to USB PD controllers and port power switches. Use Value: Responds in <1 ps to clamp 13 V standby lines to 21.5 V, preserving USB-IF certification margins for voltage tolerance and fault recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CA-E3/52 | Same electrical specs, but RoHS-compliant commercial grade (not halogen-free); matte tin plating only (no JESD201 Class 2 whisker test validation). | Limited to non-automotive industrial use where halogen-free and enhanced whisker resistance are not mandated. | Select when cost sensitivity outweighs automotive qualification or halogen-free requirements. |
| SAC13CA | Lower 400 W PPPM, higher VC = 24.4 V at 16.7 A; SOD-123FL package (smaller footprint, lower thermal mass). | Suitable for low-energy consumer ports but insufficient for IEC 61000-4-5 Level 4 or high-current industrial surges. | Choose only for space-constrained, low-power applications where 600 W headroom is unnecessary. |
Compared with SMBJ13CA-E3/52, the SMBJ13CAHM3_A/I adds halogen-free construction and whisker-resistant terminations for automotive-grade reliability; versus SAC13CA, it delivers 50% higher surge power handling and tighter clamping - making it the preferred choice for mission-critical industrial and automotive front-end protection.
Availability
SMBJ13CAHM3_A/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, telecom power inputs, and consumer USB-C port protection requiring stable component supply across extended production lifecycles.
Supply support for SMBJ13CAHM3_A/I 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, power efficiency, and automotive qualification.
The SMBJ series was developed specifically for high-energy transient suppression in harsh environments - targeting industrial automation, automotive electronics, and telecom infrastructure where robustness and long-term stability are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ13CAHM3_A/I under a 10/1000 µs surge?
The SMBJ13CAHM3_A/I has a maximum clamping voltage (VC) of 21.5 V when subjected to a 27.9 A peak pulse current with a 10/1000 µs waveform. This value is measured per the Vishay datasheet (Document Number: 88392, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuits during standardized surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMBJ13CAHM3_A/I suitable for automotive applications?
Yes, SMBJ13CAHM3_A/I is AEC-Q101 qualified (indicated by the HM3 suffix) and meets JESD201 Class 2 whisker resistance requirements. Its halogen-free, RoHS-compliant construction and operation over -55 °C to +150 °C junction temperature make SMBJ13CAHM3_A/I appropriate for automotive body control modules, infotainment power supplies, and LIN/CAN bus protection where reliability under thermal cycling and vibration is essential.
How does the bidirectional nature of SMBJ13CAHM3_A/I affect its PCB layout?
The bidirectional configuration of SMBJ13CAHM3_A/I eliminates polarity marking - both terminals are functionally identical, allowing placement in either orientation on the PCB. This simplifies layout, avoids assembly errors, and supports symmetric protection of differential signals (e.g., RS-485) or AC-coupled lines without dedicated anode/cathode routing - a direct advantage over unidirectional TVS diodes like SMBJ13A.
What is the thermal resistance of SMBJ13CAHM3_A/I, and how does it impact power dissipation?
SMBJ13CAHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended pad layout (0.2" × 0.2" copper). This means a 5.0 W steady-state power dissipation would raise junction temperature by 500 °C above ambient - confirming that SMBJ13CAHM3_A/I is intended for transient-only operation, not continuous power handling; sustained dissipation must remain below 500 mW to avoid exceeding 150 °C TJmax.
Does SMBJ13CAHM3_A/I require derating at elevated ambient temperatures?
Yes, SMBJ13CAHM3_A/I must be derated above 25 °C ambient per Figure 2 in the Vishay datasheet. At 75 °C ambient, its peak pulse power drops to ~420 W (70% of 600 W), and at 125 °C, it falls to ~240 W (40%). Engineers must apply this derating when designing for high-temperature enclosures or under-hood automotive locations - failure to do so risks thermal runaway during repeated surge events.
SMBJ13CAHM3_A/I 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 27.9A
- 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)
SMBJ13CAHM3_A/I FAQ
1.How can I place an order for SMBJ13CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13CAHM3_A/I 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 SMBJ13CAHM3_A/I reliable?
The price and inventory of SMBJ13CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ13CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ13CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13CAHM3_A/I?
SMBJ13CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13CAHM3_A/I 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 SMBJ13CAHM3_A/I?
For technical support, including SMBJ13CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ13CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ13CAHM3_A/I 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 SMBJ13CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ13CAHM3_A/I?
All SMBJ13CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13CAHM3_A/I, 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 SMBJ13CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ13CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ13CAHM3_A/I 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 …
