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At a glance
AGM-154 Joint Standoff Weaponlarger figure on 2 of 2
GBU-39 Small Diameter Bomblarger figure on 0 of 2
Measured figures
Length
Single source4.1 m (160 in)[source]
Length
Single sourceConfiguration
| Specification | AGM-154 Joint Standoff Weapon | GBU-39 Small Diameter Bomb |
|---|---|---|
| Type | Guided glide bomb[source] | Glide bomb[source] |
| In service | December 1998 – present[source] | 2006–present[source] |
| Used by | United States Armed Forces Republic of China Air Force Royal Canadian Air Force Finnish Air Force Polish Air Force Hellenic Air Force Royal Australian Air Force Royal Moroccan Air Force Turkish Air Force Republic of Singapore Air Force[source] | United States Israel Italy Netherlands Ukraine Saudi Arabia Australia[source] |
Counts only measures both sources give with the same scope. A larger figure is not a better system.
70.8 in (1.80 m)[source]
packed
Single sourcewings extended
Single source5 ft 3.3 in (1.61 m) (wings extended) 7.5 in (190 mm) packed[source]
Operational; high altitude release
Single sourceOperational; low altitude release
Single sourcelow altitude release: 22 km (12 nmi) high altitude release: 130 km (70 nmi)[source]
Operational; All SDB I variants over when air-dropped
Single sourceOperational; when launched as a part of the GLSDB
Single sourceAFX 1209 MBX ("multiphase blast explosive"), composite case Laser SDB (GBU-39B/B)
Single sourceAFX 757 enhanced blast insensitive explosive, penetrating steel case
Single sourceAll SDB I variants total SDB I (GBU-39/B)
Single sourceExplosive fill AFX 757 Insensitive munition certified PBX Penetration: greater than 3 ft (0.91 m) of steel reinforced concrete SDB FLM (GBU-39A/B)
Single sourceAll SDB I variants 206 lb (93 kg) total SDB I (GBU-39/B) Explosive fill: 36 lb (16 kg) AFX 757 Insensitive munition certified PBX Penetration: greater than 3 ft (0.91 m) of steel reinforced concrete SDB FLM (GBU-39A/B) 137 lb (62 kg) AFX 1209 MBX ("multiphase blast explosive"), composite case Laser SDB (GBU-39B/B) 36 lb (16 kg) AFX 757 enhanced blast insensitive explosive, penetrating steel case[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Wars |
|---|
Operation Desert Fox Operation Southern Watch NATO bombing of Yugoslavia War in Afghanistan (2001–2021) Iraq War Operation Rough Rider[source] |
War in Afghanistan , Iraq War , Military intervention against ISIL , Syrian Civil War , Russian invasion of Ukraine , Gaza war[source] |
| Manufacturer | Raytheon[source] | Boeing Integrated Defense Systems[source] |
|---|
| Unit cost | AUPP AGM-154A: $282,000 AGM-154B: $484,167 AGM-154C: $719,012[source] | US$40,000 (SDB I, FY 2021)[source] |
|---|
| Warhead | BLU-97/B - Combined Effects Bomblets (JSOW A) BLU-108 - Sensor fused weapon (JSOW B - now cancelled) BROACH multi-stage warhead (JSOW C)[source] | SDB I (GBU-39/B) penetrating blast fragmentation, penetrating steel nosecone SDB FLM (GBU-39A/B) blast ultra-low fragmentation Laser SDB (GBU-39B/B) penetrating blast fragmentation, w/o steel nosecone[source] |
|---|
| Guidance system | Inertial Navigation System coupled with Global Positioning System , terminal Infrared homing (AGM-154C Only)[source] | SDB I (GBU-39/B) SDB FLM (GBU-39A/B) GPS / INS Laser SDB (GBU-39B/B) GPS / INS with terminal semi-active laser guidance[source] |
|---|
| Role | glide bomb[source] | 250-pound (110 kg) precision-guided glide bomb[source] |
|---|
| Source measurement | US Navy commenced Operational Evaluation (OPEVAL) in February 1997 and JSOW entered operational service in January 1999. The Joint Standoff Weapon is currently used by the US Navy. Foreign Military Sales have been signed with Poland and Turkey for use with their F-16 fighters. Finland, Greece and Singapore are pursuing FMS cases at this time. (Finland cleared the FMS procedure and made the purchase for JSOW as well as JASSM and JDAM in 2017.) The JSOW family is a 450 kg (1,000 lb) class weapon intended to provide a low cost, highly lethal air-to-surface glide bomb with standoff capabilities from 28 km (15 nmi) low altitude launch and up to 110 km (60 nmi) high altitude launch. The JSOW can be used against a variety of land targets and operates from ranges outside enemy point defenses.[source]AGM-154 Joint Standoff Weapon · Development; only the objects and conditions stated in this passage The JSOW is just over 4.1 m (160 in) in length and weighs about 450 kg (1,000 lb). The JSOW was originally to be delivered in three variants, each of which uses a common air vehicle, or truck, while substituting various payloads. The AGM-154A (JSOW-A) entered service in 1999. US Navy and Air Force developed the AGM-154B (JSOW B) up until Multi-Service Operational Test & Evaluation (MOT&E) but the Navy decided not to procure the weapon when the Air Force left the program. The AGM-154C (JSOW BROACH) entered service in February 2005.[source]AGM-154 Joint Standoff Weapon · Development; only the objects and conditions stated in this passage The AGM-154C uses an Imaging Infrared (IIR) terminal seeker with autonomous guidance. The AGM-154C carries the BROACH warhead . This two stage 225 kg (500 lb) warhead is made up from a WDU-44 shaped augmenting warhead and a WDU-45 follow through bomb. The weapon is designed to attack hardened targets. It entered service with the US Navy in February 2005.[source]AGM-154 Joint Standoff Weapon · Variants / AGM-154C (unitary variant); only the objects and conditions stated in this passage A Pratt & Whitney TJ-150 turbojet engine for a powered JSOW is being tested. This variant is named JSOW-ER, where "ER" is for "extended range". JSOW-ER will increase range from 130 to 560 km (70 to 300 nmi). In February, 2019, the US Navy announced that it would issue a sole-source contract to Raytheon to build an improved JSOW-ER to be placed in service by the end of FY2023.[source]AGM-154 Joint Standoff Weapon · Production and upgrades / Powered JSOW (JSOW-ER); only the objects and conditions stated in this passage According to a test report conducted by the United States Navy's Weapon System Explosives Safety Review Board (WSESRB) established in the wake of the 1967 USS Forrestal fire , the cooking off time for a JSOW is approximately 2 minutes 11 seconds.[source]AGM-154 Joint Standoff Weapon · Operators / Current operators; only the objects and conditions stated in this passage Length: 4.1 m (160 in)[source]AGM-154 Joint Standoff Weapon · General characteristics; only the objects and conditions stated in this passage Diameter: box shaped 330 mm (13 in) on a side / other source 406 mm × 519 mm (16.0 in × 20.4 in)[source]AGM-154 Joint Standoff Weapon · General characteristics; only the objects and conditions stated in this passage Weight: From 483 to 497 kg (1,065 to 1,095 lb)[source]AGM-154 Joint Standoff Weapon · General characteristics; only the objects and conditions stated in this passage Wingspan: 2.7 m (106 in)[source]AGM-154 Joint Standoff Weapon · General characteristics; only the objects and conditions stated in this passage Aircraft Compatibility: Navy: F/A-18C/D , F/A-18E/F Air Force: F-16 Block 40/50/60 , B-1B , B-2A , B-52H , F-15E , F-35A/C Other: JAS 39 Gripen[source]AGM-154 Joint Standoff Weapon · General characteristics; only the objects and conditions stated in this passage Range: Low altitude launch - 22 km (12 nmi) High altitude launch - 130 km (70 nmi)[source]AGM-154 Joint Standoff Weapon · General characteristics; only the objects and conditions stated in this passage | The GBU-39/B Small Diameter Bomb ( SDB ) is a 250-pound (110 kg) precision-guided glide bomb that is intended to allow aircraft to carry a greater number of smaller, more accurate bombs. Most US Air Force aircraft will be able to carry (using the BRU-61/A rack ) a pack of four SDBs in place of a single 2,000-pound (910 kg) Mark 84 bomb . It first entered service in 2006. The Ground Launched Small Diameter Bomb (GLSDB) was later developed to enable the SDB to be launched from a variety of ground launchers and configurations.[source]GBU-39 Small Diameter Bomb · Lead; only the objects and conditions stated in this passage The small size of the bomb allows a strike aircraft to carry more of them than previously available bombs, and thus strike more targets. The SDB carries approximately 36 lb (16 kg) of AFX-757 high explosive . AFX-757 is an insensitive enhanced blast polymer-bonded explosive , containing 25% RDX high explosive, 30% ammonium perchlorate oxidizer, 33% aluminium powder , 4.44% HTPB binder and 6.56% dioctyl adipate plasticizer. AFX-757 has improved air blast equivalent, 1.39 times more than Composition B , but low brisance due to low RDX content. It has integrated "DiamondBack" type wings which deploy after release, increasing the glide time and therefore the maximum range. Its size and accuracy allow for an effective munition with less collateral damage . Warhead penetration is 3 ft (1 m) of steel reinforced concrete under 3 ft (1 m) of earth and the fuze has electronic safe and fire (ESAF) cockpit selectable functions, including air burst and delayed options.[source]GBU-39 Small Diameter Bomb · Description; only the objects and conditions stated in this passage The SDB I has a circular error probable (CEP) precision of 3 ft (1 m). CEP is reduced by updating differential GPS offsets prior to weapon release. These offsets are calculated using an SDB Accuracy Support Infrastructure, consisting of three or more GPS receivers at fixed locations transmitting calculated location to a correlation station at the theatre Air Operations Center . The corrections are then transmitted by Link 16 to SDB-equipped aircraft.[source]GBU-39 Small Diameter Bomb · Description; only the objects and conditions stated in this passage |
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| Country of origin | United States[source] | — |
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| Place of origin | — | United States[source] |
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| Produced | — | 2005–present[source] |
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| No. built | — | 17,000+[source] |
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| Variants | — | GBU-39/B GBU-39A/B GBU-39B/B[source] |
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| Accuracy | — | SDB I (GBU-39) 3 ft (1 m) CEP[source] |
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| Reported operators |
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All SDB I variants over 60 nmi (69 mi; 111 km) when air-dropped, 150 km (93 mi; 81 nmi) when launched as a part of the GLSDB ,[source]
In January 2016, the Air Force awarded a contract to Scientific Systems Co. Inc. to demonstrate the company's ImageNav technology, a vision-based navigation and precision targeting system that compares a terrain database with the host platform's sensor to make course corrections. ImageNav technology has demonstrated target geo-location and navigation precision within three meters.[source]GBU-39 Small Diameter Bomb · Description / Alternative guidance and warheads; only the objects and conditions stated in this passage
Under a contract awarded in September 2006, Boeing developed a version of the SDB I that replaces the steel casing with a lightweight composite casing and the warhead with a focused-blast explosive such as dense inert metal explosive (DIME). This should further reduce collateral damage when using the weapon for pinpoint strikes in urban areas. The USAF intends to use the same FLM casing on a weapon of 500 pounds (227 kg). Boeing celebrated the delivery of the first 50 FLM weapons on 28 February 2008 and delivered the last of the 500 FLMs under contract in December 2013.[source]GBU-39 Small Diameter Bomb · Variants / GBU-39A/B – SDB Focused Lethality Munition (FLM); only the objects and conditions stated in this passage
In 2011 Boeing began testing on a laser-guided version of the baseline SDB, integrating the same Semi Active Laser (SAL) from the GBU-54 Laser JDAM. Boeing claimed to have successfully hit targets moving at 30 mph (48.3 km/h) and 50 mph (80.5 km/h).[source]GBU-39 Small Diameter Bomb · Variants / GBU-39B/B – Laser SDB; only the objects and conditions stated in this passage
In August 2024, CNN reported that Israel used the GBU/39 again in the Al-Tabaeen school attack , killing over 90 people according to the Gaza Civil Defense. The IDF stated that it was a precision strike against a Hamas command and control center that killed at least 19 Hamas and PIJ militants.[source]GBU-39 Small Diameter Bomb · Operational history; only the objects and conditions stated in this passage